Commit 7d494b3e7b09403358232dc61f45374d6c26905f | zig

author	Andrew Kelley <andrew@ziglang.org> 2018-03-01 21:55:15-05:00
committer	Andrew Kelley <andrew@ziglang.org> 2018-03-01 21:55:15-05:00
log	7d494b3e7b09403358232dc61f45374d6c26905f
tree	601e35d18140e4a83ca2550b9aeaa7e1415d48e7
parent	6568be575cb87c2f54aad2dfa20d1f35471d2224
parent	de5c0c9f4092a9d5914013e3428af2252da0be81

Merge branch 'async'

closes #727

18 files changed, 2913 insertions(+), 160 deletions(-)

doc
- langref.html.in
src
std
- debug
  - index.zig
- hash_map.zig
test
- behavior.zig
- cases
  - atomics.zig
  - coroutines.zig

doc/langref.html.in+34-7

...	...	@@ -3844,6 +3844,25 @@ pub fn main() void {
3844	3844	{#header_open\|@ArgType#}
3845	3845	<p>TODO</p>
3846	3846	{#header_close#}
	3847	{#header_open\|@atomicRmw#}
	3848	<pre><code class="zig">@atomicRmw(comptime T: type, ptr: &T, comptime op: builtin.AtomicRmwOp, operand: T, comptime ordering: builtin.AtomicOrder) -> T</code></pre>
	3849	<p>
	3850	This builtin function atomically modifies memory and then returns the previous value.
	3851	</p>
	3852	<p>
	3853	<code>T</code> must be a pointer type, a <code>bool</code>,
	3854	or an integer whose bit count meets these requirements:
	3855	</p>
	3856	<ul>
	3857	<li>At least 8</li>
	3858	<li>At most the same as usize</li>
	3859	<li>Power of 2</li>
	3860	</ul>
	3861	<p>
	3862	TODO right now bool is not accepted. Also I think we could make non powers of 2 work fine, maybe
	3863	we can remove this restriction
	3864	</p>
	3865	{#header_close#}
3847	3866	{#header_open\|@bitCast#}
3848	3867	<pre><code class="zig">@bitCast(comptime DestType: type, value: var) -> DestType</code></pre>
3849	3868	<p>
...	...	@@ -5714,7 +5733,7 @@ UseDecl = "use" Expression ";"
5714	5733
5715	5734	ExternDecl = "extern" option(String) (FnProto \| VariableDeclaration) ";"
5716	5735
5717		FnProto = option("nakedcc" \| "stdcallcc" \| "extern") "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
	5736	FnProto = option("nakedcc" \| "stdcallcc" \| "extern" \| ("async" option("(" Expression ")"))) "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
5718	5737
5719	5738	FnDef = option("inline" \| "export") FnProto Block
5720	5739
...	...	@@ -5732,7 +5751,7 @@ ErrorSetExpr = (PrefixOpExpression "!" PrefixOpExpression) \| PrefixOpExpression
5732	5751
5733	5752	BlockOrExpression = Block \| Expression
5734	5753
5735		Expression = TryExpression \| ReturnExpression \| BreakExpression \| AssignmentExpression
	5754	Expression = TryExpression \| ReturnExpression \| BreakExpression \| AssignmentExpression \| CancelExpression \| ResumeExpression
5736	5755
5737	5756	AsmExpression = "asm" option("volatile") "(" String option(AsmOutput) ")"
5738	5757
...	...	@@ -5756,7 +5775,7 @@ AssignmentExpression = UnwrapExpression AssignmentOperator UnwrapExpression \| Un
5756	5775
5757	5776	AssignmentOperator = "=" \| "=" \| "/=" \| "%=" \| "+=" \| "-=" \| "<<=" \| ">>=" \| "&=" \| "^=" \| "\|=" \| "%=" \| "+%=" \| "-%="
5758	5777
5759		BlockExpression(body) = Block \| IfExpression(body) \| IfErrorExpression(body) \| TestExpression(body) \| WhileExpression(body) \| ForExpression(body) \| SwitchExpression \| CompTimeExpression(body)
	5778	BlockExpression(body) = Block \| IfExpression(body) \| IfErrorExpression(body) \| TestExpression(body) \| WhileExpression(body) \| ForExpression(body) \| SwitchExpression \| CompTimeExpression(body) \| SuspendExpression(body)
5760	5779
5761	5780	CompTimeExpression(body) = "comptime" body
5762	5781
...	...	@@ -5774,12 +5793,20 @@ ReturnExpression = "return" option(Expression)
5774	5793
5775	5794	TryExpression = "try" Expression
5776	5795
	5796	AwaitExpression = "await" Expression
	5797
5777	5798	BreakExpression = "break" option(":" Symbol) option(Expression)
5778	5799
	5800	CancelExpression = "cancel" Expression;
	5801
	5802	ResumeExpression = "resume" Expression;
	5803
5779	5804	Defer(body) = ("defer" \| "deferror") body
5780	5805
5781	5806	IfExpression(body) = "if" "(" Expression ")" body option("else" BlockExpression(body))
5782	5807
	5808	SuspendExpression(body) = "suspend" option(("\|" Symbol "\|" body))
	5809
5783	5810	IfErrorExpression(body) = "if" "(" Expression ")" option("\|" option("*") Symbol "\|") body "else" "\|" Symbol "\|" BlockExpression(body)
5784	5811
5785	5812	TestExpression(body) = "if" "(" Expression ")" option("\|" option("*") Symbol "\|") body option("else" BlockExpression(body))
...	...	@@ -5814,7 +5841,7 @@ MultiplyOperator = "\|\|" \| "" \| "/" \| "%" \| "" \| "%"
5814	5841
5815	5842	PrefixOpExpression = PrefixOp ErrorSetExpr \| SuffixOpExpression
5816	5843
5817		SuffixOpExpression = PrimaryExpression option(FnCallExpression \| ArrayAccessExpression \| FieldAccessExpression \| SliceExpression)
	5844	SuffixOpExpression = ("async" option("(" Expression ")") PrimaryExpression FnCallExpression) \| PrimaryExpression option(FnCallExpression \| ArrayAccessExpression \| FieldAccessExpression \| SliceExpression)
5818	5845
5819	5846	FieldAccessExpression = "." Symbol
5820	5847
...	...	@@ -5830,7 +5857,7 @@ ContainerInitBody = list(StructLiteralField, ",") \| list(Expression, ",")
5830	5857
5831	5858	StructLiteralField = "." Symbol "=" Expression
5832	5859
5833		PrefixOp = "!" \| "-" \| "~" \| "*" \| ("&" option("align" "(" Expression option(":" Integer ":" Integer) ")" ) option("const") option("volatile")) \| "?" \| "??" \| "-%" \| "try"
	5860	PrefixOp = "!" \| "-" \| "~" \| "*" \| ("&" option("align" "(" Expression option(":" Integer ":" Integer) ")" ) option("const") option("volatile")) \| "?" \| "??" \| "-%" \| "try" \| "await"
5834	5861
5835	5862	PrimaryExpression = Integer \| Float \| String \| CharLiteral \| KeywordLiteral \| GroupedExpression \| BlockExpression(BlockOrExpression) \| Symbol \| ("@" Symbol FnCallExpression) \| ArrayType \| FnProto \| AsmExpression \| ContainerDecl \| ("continue" option(":" Symbol)) \| ErrorSetDecl
5836	5863
...	...	@@ -5838,7 +5865,7 @@ ArrayType : "[" option(Expression) "]" option("align" "(" Expression option(":"
5838	5865
5839	5866	GroupedExpression = "(" Expression ")"
5840	5867
5841		KeywordLiteral = "true" \| "false" \| "null" \| "undefined" \| "error" \| "this" \| "unreachable"
	5868	KeywordLiteral = "true" \| "false" \| "null" \| "undefined" \| "error" \| "this" \| "unreachable" \| "suspend"
5842	5869
5843	5870	ErrorSetDecl = "error" "{" list(Symbol, ",") "}"
5844	5871
...	...	@@ -5922,7 +5949,7 @@ hljs.registerLanguage("zig", function(t) {
5922	5949	a = t.IR + "\\s*\\(",
5923	5950	c = {
5924	5951	keyword: "const align var extern stdcallcc nakedcc volatile export pub noalias inline struct packed enum union break return try catch test continue unreachable comptime and or asm defer errdefer if else switch while for fn use bool f32 f64 void type noreturn error i8 u8 i16 u16 i32 u32 i64 u64 isize usize i8w u8w i16w i32w u32w i64w u64w isizew usizew c_short c_ushort c_int c_uint c_long c_ulong c_longlong c_ulonglong",
5925		built_in: "breakpoint returnAddress frameAddress fieldParentPtr setFloatMode IntType OpaqueType compileError compileLog setCold setRuntimeSafety setEvalBranchQuota offsetOf memcpy inlineCall setGlobalLinkage setGlobalSection divTrunc divFloor enumTagName intToPtr ptrToInt panic canImplicitCast ptrCast bitCast rem mod memset sizeOf alignOf alignCast maxValue minValue memberCount memberName memberType typeOf addWithOverflow subWithOverflow mulWithOverflow shlWithOverflow shlExact shrExact cInclude cDefine cUndef ctz clz import cImport errorName embedFile cmpxchg fence divExact truncate",
	5952	built_in: "breakpoint returnAddress frameAddress fieldParentPtr setFloatMode IntType OpaqueType compileError compileLog setCold setRuntimeSafety setEvalBranchQuota offsetOf memcpy inlineCall setGlobalLinkage setGlobalSection divTrunc divFloor enumTagName intToPtr ptrToInt panic canImplicitCast ptrCast bitCast rem mod memset sizeOf alignOf alignCast maxValue minValue memberCount memberName memberType typeOf addWithOverflow subWithOverflow mulWithOverflow shlWithOverflow shlExact shrExact cInclude cDefine cUndef ctz clz import cImport errorName embedFile cmpxchg fence divExact truncate atomicRmw",
5926	5953	literal: "true false null undefined"
5927	5954	},
5928	5955	n = [e, t.CLCM, t.CBCM, s, r];

src/all_types.hpp+210

...	...	@@ -56,6 +56,16 @@ struct IrExecutable {
56	56	IrAnalyze *analysis;
57	57	Scope *begin_scope;
58	58	ZigList<Tld *> tld_list;
	59
	60	IrInstruction *coro_handle;
	61	IrInstruction *coro_awaiter_field_ptr; // this one is shared and in the promise
	62	IrInstruction *coro_result_ptr_field_ptr;
	63	IrInstruction *await_handle_var_ptr; // this one is where we put the one we extracted from the promise
	64	IrBasicBlock *coro_early_final;
	65	IrBasicBlock *coro_normal_final;
	66	IrBasicBlock *coro_suspend_block;
	67	IrBasicBlock *coro_final_cleanup_block;
	68	VariableTableEntry *coro_allocator_var;
59	69	};
60	70
61	71	enum OutType {
...	...	@@ -393,6 +403,10 @@ enum NodeType {
393	403	NodeTypeIfErrorExpr,
394	404	NodeTypeTestExpr,
395	405	NodeTypeErrorSetDecl,
	406	NodeTypeCancel,
	407	NodeTypeResume,
	408	NodeTypeAwaitExpr,
	409	NodeTypeSuspend,
396	410	};
397	411
398	412	struct AstNodeRoot {
...	...	@@ -405,6 +419,7 @@ enum CallingConvention {
405	419	CallingConventionCold,
406	420	CallingConventionNaked,
407	421	CallingConventionStdcall,
	422	CallingConventionAsync,
408	423	};
409	424
410	425	struct AstNodeFnProto {
...	...	@@ -426,6 +441,7 @@ struct AstNodeFnProto {
426	441	AstNode *section_expr;
427	442
428	443	bool auto_err_set;
	444	AstNode *async_allocator_type;
429	445	};
430	446
431	447	struct AstNodeFnDef {
...	...	@@ -567,6 +583,8 @@ struct AstNodeFnCallExpr {
567	583	AstNode *fn_ref_expr;
568	584	ZigList<AstNode *> params;
569	585	bool is_builtin;
	586	bool is_async;
	587	AstNode *async_allocator;
570	588	};
571	589
572	590	struct AstNodeArrayAccessExpr {
...	...	@@ -829,6 +847,14 @@ struct AstNodeBreakExpr {
829	847	AstNode *expr; // may be null
830	848	};
831	849
	850	struct AstNodeCancelExpr {
	851	AstNode *expr;
	852	};
	853
	854	struct AstNodeResumeExpr {
	855	AstNode *expr;
	856	};
	857
832	858	struct AstNodeContinueExpr {
833	859	Buf *name;
834	860	};
...	...	@@ -843,6 +869,15 @@ struct AstNodeErrorType {
843	869	struct AstNodeVarLiteral {
844	870	};
845	871
	872	struct AstNodeAwaitExpr {
	873	AstNode *expr;
	874	};
	875
	876	struct AstNodeSuspend {
	877	AstNode *block;
	878	AstNode *promise_symbol;
	879	};
	880
846	881	struct AstNode {
847	882	enum NodeType type;
848	883	size_t line;
...	...	@@ -900,6 +935,10 @@ struct AstNode {
900	935	AstNodeErrorType error_type;
901	936	AstNodeVarLiteral var_literal;
902	937	AstNodeErrorSetDecl err_set_decl;
	938	AstNodeCancelExpr cancel_expr;
	939	AstNodeResumeExpr resume_expr;
	940	AstNodeAwaitExpr await_expr;
	941	AstNodeSuspend suspend;
903	942	} data;
904	943	};
905	944
...	...	@@ -926,6 +965,7 @@ struct FnTypeId {
926	965	bool is_var_args;
927	966	CallingConvention cc;
928	967	uint32_t alignment;
	968	TypeTableEntry *async_allocator_type;
929	969	};
930	970
931	971	uint32_t fn_type_id_hash(FnTypeId*);
...	...	@@ -1087,6 +1127,11 @@ struct TypeTableEntryBoundFn {
1087	1127	TypeTableEntry *fn_type;
1088	1128	};
1089	1129
	1130	struct TypeTableEntryPromise {
	1131	// null if `promise` instead of `promise->T`
	1132	TypeTableEntry *result_type;
	1133	};
	1134
1090	1135	enum TypeTableEntryId {
1091	1136	TypeTableEntryIdInvalid,
1092	1137	TypeTableEntryIdVar,
...	...	@@ -1114,6 +1159,7 @@ enum TypeTableEntryId {
1114	1159	TypeTableEntryIdBoundFn,
1115	1160	TypeTableEntryIdArgTuple,
1116	1161	TypeTableEntryIdOpaque,
	1162	TypeTableEntryIdPromise,
1117	1163	};
1118	1164
1119	1165	struct TypeTableEntry {
...	...	@@ -1140,11 +1186,14 @@ struct TypeTableEntry {
1140	1186	TypeTableEntryUnion unionation;
1141	1187	TypeTableEntryFn fn;
1142	1188	TypeTableEntryBoundFn bound_fn;
	1189	TypeTableEntryPromise promise;
1143	1190	} data;
1144	1191
1145	1192	// use these fields to make sure we don't duplicate type table entries for the same type
1146	1193	TypeTableEntry *pointer_parent[2]; // [0 - mut, 1 - const]
1147	1194	TypeTableEntry *maybe_parent;
	1195	TypeTableEntry *promise_parent;
	1196	TypeTableEntry *promise_frame_parent;
1148	1197	// If we generate a constant name value for this type, we memoize it here.
1149	1198	// The type of this is array
1150	1199	ConstExprValue *cached_const_name_val;
...	...	@@ -1297,6 +1346,7 @@ enum BuiltinFnId {
1297	1346	BuiltinFnIdArgType,
1298	1347	BuiltinFnIdExport,
1299	1348	BuiltinFnIdErrorReturnTrace,
	1349	BuiltinFnIdAtomicRmw,
1300	1350	};
1301	1351
1302	1352	struct BuiltinFnEntry {
...	...	@@ -1470,6 +1520,7 @@ struct CodeGen {
1470	1520	TypeTableEntry *entry_u8;
1471	1521	TypeTableEntry *entry_u16;
1472	1522	TypeTableEntry *entry_u32;
	1523	TypeTableEntry *entry_u29;
1473	1524	TypeTableEntry *entry_u64;
1474	1525	TypeTableEntry *entry_u128;
1475	1526	TypeTableEntry *entry_i8;
...	...	@@ -1495,6 +1546,7 @@ struct CodeGen {
1495	1546	TypeTableEntry *entry_var;
1496	1547	TypeTableEntry *entry_global_error_set;
1497	1548	TypeTableEntry *entry_arg_tuple;
	1549	TypeTableEntry *entry_promise;
1498	1550	} builtin_types;
1499	1551
1500	1552	EmitFileType emit_file_type;
...	...	@@ -1581,6 +1633,18 @@ struct CodeGen {
1581	1633	LLVMValueRef trap_fn_val;
1582	1634	LLVMValueRef return_address_fn_val;
1583	1635	LLVMValueRef frame_address_fn_val;
	1636	LLVMValueRef coro_destroy_fn_val;
	1637	LLVMValueRef coro_id_fn_val;
	1638	LLVMValueRef coro_alloc_fn_val;
	1639	LLVMValueRef coro_size_fn_val;
	1640	LLVMValueRef coro_begin_fn_val;
	1641	LLVMValueRef coro_suspend_fn_val;
	1642	LLVMValueRef coro_end_fn_val;
	1643	LLVMValueRef coro_free_fn_val;
	1644	LLVMValueRef coro_resume_fn_val;
	1645	LLVMValueRef coro_save_fn_val;
	1646	LLVMValueRef coro_promise_fn_val;
	1647	LLVMValueRef coro_alloc_helper_fn_val;
1584	1648	bool error_during_imports;
1585	1649
1586	1650	const char **clang_argv;
...	...	@@ -1803,6 +1867,19 @@ enum AtomicOrder {
1803	1867	AtomicOrderSeqCst,
1804	1868	};
1805	1869
	1870	// synchronized with the code in define_builtin_compile_vars
	1871	enum AtomicRmwOp {
	1872	AtomicRmwOp_xchg,
	1873	AtomicRmwOp_add,
	1874	AtomicRmwOp_sub,
	1875	AtomicRmwOp_and,
	1876	AtomicRmwOp_nand,
	1877	AtomicRmwOp_or,
	1878	AtomicRmwOp_xor,
	1879	AtomicRmwOp_max,
	1880	AtomicRmwOp_min,
	1881	};
	1882
1806	1883	// A basic block contains no branching. Branches send control flow
1807	1884	// to another basic block.
1808	1885	// Phi instructions must be first in a basic block.
...	...	@@ -1939,6 +2016,22 @@ enum IrInstructionId {
1939	2016	IrInstructionIdExport,
1940	2017	IrInstructionIdErrorReturnTrace,
1941	2018	IrInstructionIdErrorUnion,
	2019	IrInstructionIdCancel,
	2020	IrInstructionIdGetImplicitAllocator,
	2021	IrInstructionIdCoroId,
	2022	IrInstructionIdCoroAlloc,
	2023	IrInstructionIdCoroSize,
	2024	IrInstructionIdCoroBegin,
	2025	IrInstructionIdCoroAllocFail,
	2026	IrInstructionIdCoroSuspend,
	2027	IrInstructionIdCoroEnd,
	2028	IrInstructionIdCoroFree,
	2029	IrInstructionIdCoroResume,
	2030	IrInstructionIdCoroSave,
	2031	IrInstructionIdCoroPromise,
	2032	IrInstructionIdCoroAllocHelper,
	2033	IrInstructionIdAtomicRmw,
	2034	IrInstructionIdPromiseResultType,
1942	2035	};
1943	2036
1944	2037	struct IrInstruction {
...	...	@@ -2142,6 +2235,9 @@ struct IrInstructionCall {
2142	2235	bool is_comptime;
2143	2236	LLVMValueRef tmp_ptr;
2144	2237	FnInline fn_inline;
	2238	bool is_async;
	2239
	2240	IrInstruction *async_allocator;
2145	2241	};
2146	2242
2147	2243	struct IrInstructionConst {
...	...	@@ -2776,6 +2872,113 @@ struct IrInstructionErrorUnion {
2776	2872	IrInstruction *payload;
2777	2873	};
2778	2874
	2875	struct IrInstructionCancel {
	2876	IrInstruction base;
	2877
	2878	IrInstruction *target;
	2879	};
	2880
	2881	enum ImplicitAllocatorId {
	2882	ImplicitAllocatorIdArg,
	2883	ImplicitAllocatorIdLocalVar,
	2884	};
	2885
	2886	struct IrInstructionGetImplicitAllocator {
	2887	IrInstruction base;
	2888
	2889	ImplicitAllocatorId id;
	2890	};
	2891
	2892	struct IrInstructionCoroId {
	2893	IrInstruction base;
	2894
	2895	IrInstruction *promise_ptr;
	2896	};
	2897
	2898	struct IrInstructionCoroAlloc {
	2899	IrInstruction base;
	2900
	2901	IrInstruction *coro_id;
	2902	};
	2903
	2904	struct IrInstructionCoroSize {
	2905	IrInstruction base;
	2906	};
	2907
	2908	struct IrInstructionCoroBegin {
	2909	IrInstruction base;
	2910
	2911	IrInstruction *coro_id;
	2912	IrInstruction *coro_mem_ptr;
	2913	};
	2914
	2915	struct IrInstructionCoroAllocFail {
	2916	IrInstruction base;
	2917
	2918	IrInstruction *err_val;
	2919	};
	2920
	2921	struct IrInstructionCoroSuspend {
	2922	IrInstruction base;
	2923
	2924	IrInstruction *save_point;
	2925	IrInstruction *is_final;
	2926	};
	2927
	2928	struct IrInstructionCoroEnd {
	2929	IrInstruction base;
	2930	};
	2931
	2932	struct IrInstructionCoroFree {
	2933	IrInstruction base;
	2934
	2935	IrInstruction *coro_id;
	2936	IrInstruction *coro_handle;
	2937	};
	2938
	2939	struct IrInstructionCoroResume {
	2940	IrInstruction base;
	2941
	2942	IrInstruction *awaiter_handle;
	2943	};
	2944
	2945	struct IrInstructionCoroSave {
	2946	IrInstruction base;
	2947
	2948	IrInstruction *coro_handle;
	2949	};
	2950
	2951	struct IrInstructionCoroPromise {
	2952	IrInstruction base;
	2953
	2954	IrInstruction *coro_handle;
	2955	};
	2956
	2957	struct IrInstructionCoroAllocHelper {
	2958	IrInstruction base;
	2959
	2960	IrInstruction *alloc_fn;
	2961	IrInstruction *coro_size;
	2962	};
	2963
	2964	struct IrInstructionAtomicRmw {
	2965	IrInstruction base;
	2966
	2967	IrInstruction *operand_type;
	2968	IrInstruction *ptr;
	2969	IrInstruction *op;
	2970	AtomicRmwOp resolved_op;
	2971	IrInstruction *operand;
	2972	IrInstruction *ordering;
	2973	AtomicOrder resolved_ordering;
	2974	};
	2975
	2976	struct IrInstructionPromiseResultType {
	2977	IrInstruction base;
	2978
	2979	IrInstruction *promise_type;
	2980	};
	2981
2779	2982	static const size_t slice_ptr_index = 0;
2780	2983	static const size_t slice_len_index = 1;
2781	2984
...	...	@@ -2785,6 +2988,13 @@ static const size_t maybe_null_index = 1;
2785	2988	static const size_t err_union_err_index = 0;
2786	2989	static const size_t err_union_payload_index = 1;
2787	2990
	2991	#define ASYNC_ALLOC_FIELD_NAME "allocFn"
	2992	#define ASYNC_FREE_FIELD_NAME "freeFn"
	2993	#define AWAITER_HANDLE_FIELD_NAME "awaiter_handle"
	2994	#define RESULT_FIELD_NAME "result"
	2995	#define RESULT_PTR_FIELD_NAME "result_ptr"
	2996
	2997
2788	2998	enum FloatMode {
2789	2999	FloatModeOptimized,
2790	3000	FloatModeStrict,

src/analyze.cpp+179-30

...	...	@@ -230,6 +230,7 @@ bool type_is_complete(TypeTableEntry *type_entry) {
230	230	case TypeTableEntryIdBlock:
231	231	case TypeTableEntryIdBoundFn:
232	232	case TypeTableEntryIdArgTuple:
	233	case TypeTableEntryIdPromise:
233	234	return true;
234	235	}
235	236	zig_unreachable();
...	...	@@ -267,6 +268,7 @@ bool type_has_zero_bits_known(TypeTableEntry *type_entry) {
267	268	case TypeTableEntryIdBoundFn:
268	269	case TypeTableEntryIdArgTuple:
269	270	case TypeTableEntryIdOpaque:
	271	case TypeTableEntryIdPromise:
270	272	return true;
271	273	}
272	274	zig_unreachable();
...	...	@@ -339,6 +341,32 @@ TypeTableEntry get_smallest_unsigned_int_type(CodeGen g, uint64_t x) {
339	341	return get_int_type(g, false, bits_needed_for_unsigned(x));
340	342	}
341	343
	344	TypeTableEntry get_promise_type(CodeGen g, TypeTableEntry *result_type) {
	345	if (result_type != nullptr && result_type->promise_parent != nullptr) {
	346	return result_type->promise_parent;
	347	} else if (result_type == nullptr && g->builtin_types.entry_promise != nullptr) {
	348	return g->builtin_types.entry_promise;
	349	}
	350
	351	TypeTableEntry *u8_ptr_type = get_pointer_to_type(g, g->builtin_types.entry_u8, false);
	352	TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdPromise);
	353	entry->type_ref = u8_ptr_type->type_ref;
	354	entry->zero_bits = false;
	355	entry->data.promise.result_type = result_type;
	356	buf_init_from_str(&entry->name, "promise");
	357	if (result_type != nullptr) {
	358	buf_appendf(&entry->name, "->%s", buf_ptr(&result_type->name));
	359	}
	360	entry->di_type = u8_ptr_type->di_type;
	361
	362	if (result_type != nullptr) {
	363	result_type->promise_parent = entry;
	364	} else if (result_type == nullptr) {
	365	g->builtin_types.entry_promise = entry;
	366	}
	367	return entry;
	368	}
	369
342	370	TypeTableEntry get_pointer_to_type_extra(CodeGen g, TypeTableEntry *child_type, bool is_const,
343	371	bool is_volatile, uint32_t byte_alignment, uint32_t bit_offset, uint32_t unaligned_bit_count)
344	372	{
...	...	@@ -429,6 +457,23 @@ TypeTableEntry get_pointer_to_type(CodeGen g, TypeTableEntry *child_type, bool
429	457	return get_pointer_to_type_extra(g, child_type, is_const, false, get_abi_alignment(g, child_type), 0, 0);
430	458	}
431	459
	460	TypeTableEntry get_promise_frame_type(CodeGen g, TypeTableEntry *return_type) {
	461	if (return_type->promise_frame_parent != nullptr) {
	462	return return_type->promise_frame_parent;
	463	}
	464
	465	TypeTableEntry *awaiter_handle_type = get_maybe_type(g, g->builtin_types.entry_promise);
	466	TypeTableEntry *result_ptr_type = get_pointer_to_type(g, return_type, false);
	467	const char *field_names[] = {AWAITER_HANDLE_FIELD_NAME, RESULT_FIELD_NAME, RESULT_PTR_FIELD_NAME};
	468	TypeTableEntry *field_types[] = {awaiter_handle_type, return_type, result_ptr_type};
	469	size_t field_count = type_has_bits(result_ptr_type) ? 3 : 1;
	470	Buf *name = buf_sprintf("AsyncFramePromise(%s)", buf_ptr(&return_type->name));
	471	TypeTableEntry *entry = get_struct_type(g, buf_ptr(name), field_names, field_types, field_count);
	472
	473	return_type->promise_frame_parent = entry;
	474	return entry;
	475	}
	476
432	477	TypeTableEntry get_maybe_type(CodeGen g, TypeTableEntry *child_type) {
433	478	if (child_type->maybe_parent) {
434	479	TypeTableEntry *entry = child_type->maybe_parent;
...	...	@@ -447,9 +492,7 @@ TypeTableEntry get_maybe_type(CodeGen g, TypeTableEntry *child_type) {
447	492	if (child_type->zero_bits) {
448	493	entry->type_ref = LLVMInt1Type();
449	494	entry->di_type = g->builtin_types.entry_bool->di_type;
450		} else if (child_type->id == TypeTableEntryIdPointer \|\|
451		child_type->id == TypeTableEntryIdFn)
452		{
	495	} else if (type_is_codegen_pointer(child_type)) {
453	496	// this is an optimization but also is necessary for calling C
454	497	// functions where all pointers are maybe pointers
455	498	// function types are technically pointers
...	...	@@ -884,6 +927,7 @@ static const char *calling_convention_name(CallingConvention cc) {
884	927	case CallingConventionCold: return "coldcc";
885	928	case CallingConventionNaked: return "nakedcc";
886	929	case CallingConventionStdcall: return "stdcallcc";
	930	case CallingConventionAsync: return "async";
887	931	}
888	932	zig_unreachable();
889	933	}
...	...	@@ -895,6 +939,21 @@ static const char *calling_convention_fn_type_str(CallingConvention cc) {
895	939	case CallingConventionCold: return "coldcc ";
896	940	case CallingConventionNaked: return "nakedcc ";
897	941	case CallingConventionStdcall: return "stdcallcc ";
	942	case CallingConventionAsync: return "async ";
	943	}
	944	zig_unreachable();
	945	}
	946
	947	static bool calling_convention_allows_zig_types(CallingConvention cc) {
	948	switch (cc) {
	949	case CallingConventionUnspecified:
	950	case CallingConventionAsync:
	951	return true;
	952	case CallingConventionC:
	953	case CallingConventionCold:
	954	case CallingConventionNaked:
	955	case CallingConventionStdcall:
	956	return false;
898	957	}
899	958	zig_unreachable();
900	959	}
...	...	@@ -924,8 +983,13 @@ TypeTableEntry get_fn_type(CodeGen g, FnTypeId *fn_type_id) {
924	983
925	984	// populate the name of the type
926	985	buf_resize(&fn_type->name, 0);
927		const char *cc_str = calling_convention_fn_type_str(fn_type->data.fn.fn_type_id.cc);
928		buf_appendf(&fn_type->name, "%sfn(", cc_str);
	986	if (fn_type->data.fn.fn_type_id.cc == CallingConventionAsync) {
	987	buf_appendf(&fn_type->name, "async(%s) ", buf_ptr(&fn_type_id->async_allocator_type->name));
	988	} else {
	989	const char *cc_str = calling_convention_fn_type_str(fn_type->data.fn.fn_type_id.cc);
	990	buf_appendf(&fn_type->name, "%s", cc_str);
	991	}
	992	buf_appendf(&fn_type->name, "fn(");
929	993	for (size_t i = 0; i < fn_type_id->param_count; i += 1) {
930	994	FnTypeParamInfo *param_info = &fn_type_id->param_info[i];
931	995
...	...	@@ -953,20 +1017,23 @@ TypeTableEntry get_fn_type(CodeGen g, FnTypeId *fn_type_id) {
953	1017	if (!skip_debug_info) {
954	1018	bool first_arg_return = calling_convention_does_first_arg_return(fn_type_id->cc) &&
955	1019	handle_is_ptr(fn_type_id->return_type);
956		bool prefix_arg_error_return_trace = g->have_err_ret_tracing &&
957		(fn_type_id->return_type->id == TypeTableEntryIdErrorUnion \|\|
958		fn_type_id->return_type->id == TypeTableEntryIdErrorSet);
	1020	bool is_async = fn_type_id->cc == CallingConventionAsync;
	1021	bool prefix_arg_error_return_trace = g->have_err_ret_tracing && fn_type_can_fail(fn_type_id);
959	1022	// +1 for maybe making the first argument the return value
960		// +1 for maybe last argument the error return trace
961		LLVMTypeRef *gen_param_types = allocate<LLVMTypeRef>(2 + fn_type_id->param_count);
	1023	// +1 for maybe first argument the error return trace
	1024	// +2 for maybe arguments async allocator and error code pointer
	1025	LLVMTypeRef *gen_param_types = allocate<LLVMTypeRef>(4 + fn_type_id->param_count);
962	1026	// +1 because 0 is the return type and
963	1027	// +1 for maybe making first arg ret val and
964		// +1 for maybe last argument the error return trace
965		ZigLLVMDIType *param_di_types = allocate<ZigLLVMDIType>(3 + fn_type_id->param_count);
	1028	// +1 for maybe first argument the error return trace
	1029	// +2 for maybe arguments async allocator and error code pointer
	1030	ZigLLVMDIType *param_di_types = allocate<ZigLLVMDIType>(5 + fn_type_id->param_count);
966	1031	param_di_types[0] = fn_type_id->return_type->di_type;
967	1032	size_t gen_param_index = 0;
968	1033	TypeTableEntry *gen_return_type;
969		if (!type_has_bits(fn_type_id->return_type)) {
	1034	if (is_async) {
	1035	gen_return_type = get_pointer_to_type(g, g->builtin_types.entry_u8, false);
	1036	} else if (!type_has_bits(fn_type_id->return_type)) {
970	1037	gen_return_type = g->builtin_types.entry_void;
971	1038	} else if (first_arg_return) {
972	1039	TypeTableEntry *gen_type = get_pointer_to_type(g, fn_type_id->return_type, false);
...	...	@@ -987,6 +1054,25 @@ TypeTableEntry get_fn_type(CodeGen g, FnTypeId *fn_type_id) {
987	1054	// after the gen_param_index += 1 because 0 is the return type
988	1055	param_di_types[gen_param_index] = gen_type->di_type;
989	1056	}
	1057	if (is_async) {
	1058	{
	1059	// async allocator param
	1060	TypeTableEntry *gen_type = fn_type_id->async_allocator_type;
	1061	gen_param_types[gen_param_index] = gen_type->type_ref;
	1062	gen_param_index += 1;
	1063	// after the gen_param_index += 1 because 0 is the return type
	1064	param_di_types[gen_param_index] = gen_type->di_type;
	1065	}
	1066
	1067	{
	1068	// error code pointer
	1069	TypeTableEntry *gen_type = get_pointer_to_type(g, g->builtin_types.entry_global_error_set, false);
	1070	gen_param_types[gen_param_index] = gen_type->type_ref;
	1071	gen_param_index += 1;
	1072	// after the gen_param_index += 1 because 0 is the return type
	1073	param_di_types[gen_param_index] = gen_type->di_type;
	1074	}
	1075	}
990	1076
991	1077	fn_type->data.fn.gen_param_info = allocate<FnGenParamInfo>(fn_type_id->param_count);
992	1078	for (size_t i = 0; i < fn_type_id->param_count; i += 1) {
...	...	@@ -1096,7 +1182,16 @@ TypeTableEntry analyze_type_expr(CodeGen g, Scope scope, AstNode node) {
1096	1182	TypeTableEntry get_generic_fn_type(CodeGen g, FnTypeId *fn_type_id) {
1097	1183	TypeTableEntry *fn_type = new_type_table_entry(TypeTableEntryIdFn);
1098	1184	fn_type->is_copyable = false;
1099		buf_init_from_str(&fn_type->name, "fn(");
	1185	buf_resize(&fn_type->name, 0);
	1186	if (fn_type->data.fn.fn_type_id.cc == CallingConventionAsync) {
	1187	const char *async_allocator_type_str = (fn_type->data.fn.fn_type_id.async_allocator_type == nullptr) ?
	1188	"var" : buf_ptr(&fn_type_id->async_allocator_type->name);
	1189	buf_appendf(&fn_type->name, "async(%s) ", async_allocator_type_str);
	1190	} else {
	1191	const char *cc_str = calling_convention_fn_type_str(fn_type->data.fn.fn_type_id.cc);
	1192	buf_appendf(&fn_type->name, "%s", cc_str);
	1193	}
	1194	buf_appendf(&fn_type->name, "fn(");
1100	1195	size_t i = 0;
1101	1196	for (; i < fn_type_id->next_param_index; i += 1) {
1102	1197	const char *comma_str = (i == 0) ? "" : ",";
...	...	@@ -1201,6 +1296,7 @@ static bool type_allowed_in_packed_struct(TypeTableEntry *type_entry) {
1201	1296	case TypeTableEntryIdBoundFn:
1202	1297	case TypeTableEntryIdArgTuple:
1203	1298	case TypeTableEntryIdOpaque:
	1299	case TypeTableEntryIdPromise:
1204	1300	return false;
1205	1301	case TypeTableEntryIdVoid:
1206	1302	case TypeTableEntryIdBool:
...	...	@@ -1217,7 +1313,7 @@ static bool type_allowed_in_packed_struct(TypeTableEntry *type_entry) {
1217	1313	case TypeTableEntryIdMaybe:
1218	1314	{
1219	1315	TypeTableEntry *child_type = type_entry->data.maybe.child_type;
1220		return child_type->id == TypeTableEntryIdPointer \|\| child_type->id == TypeTableEntryIdFn;
	1316	return type_is_codegen_pointer(child_type);
1221	1317	}
1222	1318	case TypeTableEntryIdEnum:
1223	1319	return type_entry->data.enumeration.decl_node->data.container_decl.init_arg_expr != nullptr;
...	...	@@ -1241,6 +1337,7 @@ static bool type_allowed_in_extern(CodeGen g, TypeTableEntry type_entry) {
1241	1337	case TypeTableEntryIdBlock:
1242	1338	case TypeTableEntryIdBoundFn:
1243	1339	case TypeTableEntryIdArgTuple:
	1340	case TypeTableEntryIdPromise:
1244	1341	return false;
1245	1342	case TypeTableEntryIdOpaque:
1246	1343	case TypeTableEntryIdUnreachable:
...	...	@@ -1312,7 +1409,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1312	1409	bool param_is_var_args = param_node->data.param_decl.is_var_args;
1313	1410
1314	1411	if (param_is_comptime) {
1315		if (fn_type_id.cc != CallingConventionUnspecified) {
	1412	if (!calling_convention_allows_zig_types(fn_type_id.cc)) {
1316	1413	add_node_error(g, param_node,
1317	1414	buf_sprintf("comptime parameter not allowed in function with calling convention '%s'",
1318	1415	calling_convention_name(fn_type_id.cc)));
...	...	@@ -1323,7 +1420,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1323	1420	if (fn_type_id.cc == CallingConventionC) {
1324	1421	fn_type_id.param_count = fn_type_id.next_param_index;
1325	1422	continue;
1326		} else if (fn_type_id.cc == CallingConventionUnspecified) {
	1423	} else if (calling_convention_allows_zig_types(fn_type_id.cc)) {
1327	1424	return get_generic_fn_type(g, &fn_type_id);
1328	1425	} else {
1329	1426	add_node_error(g, param_node,
...	...	@@ -1337,7 +1434,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1337	1434	if (type_is_invalid(type_entry)) {
1338	1435	return g->builtin_types.entry_invalid;
1339	1436	}
1340		if (fn_type_id.cc != CallingConventionUnspecified) {
	1437	if (!calling_convention_allows_zig_types(fn_type_id.cc)) {
1341	1438	type_ensure_zero_bits_known(g, type_entry);
1342	1439	if (!type_has_bits(type_entry)) {
1343	1440	add_node_error(g, param_node->data.param_decl.type,
...	...	@@ -1347,7 +1444,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1347	1444	}
1348	1445	}
1349	1446
1350		if (fn_type_id.cc != CallingConventionUnspecified && !type_allowed_in_extern(g, type_entry)) {
	1447	if (!calling_convention_allows_zig_types(fn_type_id.cc) && !type_allowed_in_extern(g, type_entry)) {
1351	1448	add_node_error(g, param_node->data.param_decl.type,
1352	1449	buf_sprintf("parameter of type '%s' not allowed in function with calling convention '%s'",
1353	1450	buf_ptr(&type_entry->name),
...	...	@@ -1367,7 +1464,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1367	1464	buf_sprintf("parameter of type '%s' not allowed", buf_ptr(&type_entry->name)));
1368	1465	return g->builtin_types.entry_invalid;
1369	1466	case TypeTableEntryIdVar:
1370		if (fn_type_id.cc != CallingConventionUnspecified) {
	1467	if (!calling_convention_allows_zig_types(fn_type_id.cc)) {
1371	1468	add_node_error(g, param_node->data.param_decl.type,
1372	1469	buf_sprintf("parameter of type 'var' not allowed in function with calling convention '%s'",
1373	1470	calling_convention_name(fn_type_id.cc)));
...	...	@@ -1381,7 +1478,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1381	1478	case TypeTableEntryIdBoundFn:
1382	1479	case TypeTableEntryIdMetaType:
1383	1480	add_node_error(g, param_node->data.param_decl.type,
1384		buf_sprintf("parameter of type '%s' must be declared inline",
	1481	buf_sprintf("parameter of type '%s' must be declared comptime",
1385	1482	buf_ptr(&type_entry->name)));
1386	1483	return g->builtin_types.entry_invalid;
1387	1484	case TypeTableEntryIdVoid:
...	...	@@ -1397,8 +1494,9 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1397	1494	case TypeTableEntryIdEnum:
1398	1495	case TypeTableEntryIdUnion:
1399	1496	case TypeTableEntryIdFn:
	1497	case TypeTableEntryIdPromise:
1400	1498	ensure_complete_type(g, type_entry);
1401		if (fn_type_id.cc == CallingConventionUnspecified && !type_is_copyable(g, type_entry)) {
	1499	if (calling_convention_allows_zig_types(fn_type_id.cc) && !type_is_copyable(g, type_entry)) {
1402	1500	add_node_error(g, param_node->data.param_decl.type,
1403	1501	buf_sprintf("type '%s' is not copyable; cannot pass by value", buf_ptr(&type_entry->name)));
1404	1502	return g->builtin_types.entry_invalid;
...	...	@@ -1429,7 +1527,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1429	1527	fn_type_id.return_type = specified_return_type;
1430	1528	}
1431	1529
1432		if (fn_type_id.cc != CallingConventionUnspecified && !type_allowed_in_extern(g, fn_type_id.return_type)) {
	1530	if (!calling_convention_allows_zig_types(fn_type_id.cc) && !type_allowed_in_extern(g, fn_type_id.return_type)) {
1433	1531	add_node_error(g, fn_proto->return_type,
1434	1532	buf_sprintf("return type '%s' not allowed in function with calling convention '%s'",
1435	1533	buf_ptr(&fn_type_id.return_type->name),
...	...	@@ -1456,7 +1554,7 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1456	1554	case TypeTableEntryIdBoundFn:
1457	1555	case TypeTableEntryIdVar:
1458	1556	case TypeTableEntryIdMetaType:
1459		if (fn_type_id.cc != CallingConventionUnspecified) {
	1557	if (!calling_convention_allows_zig_types(fn_type_id.cc)) {
1460	1558	add_node_error(g, fn_proto->return_type,
1461	1559	buf_sprintf("return type '%s' not allowed in function with calling convention '%s'",
1462	1560	buf_ptr(&fn_type_id.return_type->name),
...	...	@@ -1478,9 +1576,20 @@ static TypeTableEntry analyze_fn_type(CodeGen g, AstNode proto_node, Scope c
1478	1576	case TypeTableEntryIdEnum:
1479	1577	case TypeTableEntryIdUnion:
1480	1578	case TypeTableEntryIdFn:
	1579	case TypeTableEntryIdPromise:
1481	1580	break;
1482	1581	}
1483	1582
	1583	if (fn_type_id.cc == CallingConventionAsync) {
	1584	if (fn_proto->async_allocator_type == nullptr) {
	1585	return get_generic_fn_type(g, &fn_type_id);
	1586	}
	1587	fn_type_id.async_allocator_type = analyze_type_expr(g, child_scope, fn_proto->async_allocator_type);
	1588	if (type_is_invalid(fn_type_id.async_allocator_type)) {
	1589	return g->builtin_types.entry_invalid;
	1590	}
	1591	}
	1592
1484	1593	return get_fn_type(g, &fn_type_id);
1485	1594	}
1486	1595
...	...	@@ -1615,6 +1724,8 @@ TypeTableEntry get_struct_type(CodeGen g, const char type_name, const char f
1615	1724	field->src_index = i;
1616	1725	field->gen_index = i;
1617	1726
	1727	assert(type_has_bits(field->type_entry));
	1728
1618	1729	auto prev_entry = struct_type->data.structure.fields_by_name.put_unique(field->name, field);
1619	1730	assert(prev_entry == nullptr);
1620	1731	}
...	...	@@ -3119,6 +3230,10 @@ void scan_decls(CodeGen g, ScopeDecls decls_scope, AstNode *node) {
3119	3230	case NodeTypeIfErrorExpr:
3120	3231	case NodeTypeTestExpr:
3121	3232	case NodeTypeErrorSetDecl:
	3233	case NodeTypeCancel:
	3234	case NodeTypeResume:
	3235	case NodeTypeAwaitExpr:
	3236	case NodeTypeSuspend:
3122	3237	zig_unreachable();
3123	3238	}
3124	3239	}
...	...	@@ -3174,6 +3289,7 @@ TypeTableEntry validate_var_type(CodeGen g, AstNode *source_node, TypeTableEnt
3174	3289	case TypeTableEntryIdUnion:
3175	3290	case TypeTableEntryIdFn:
3176	3291	case TypeTableEntryIdBoundFn:
	3292	case TypeTableEntryIdPromise:
3177	3293	return type_entry;
3178	3294	}
3179	3295	zig_unreachable();
...	...	@@ -3552,6 +3668,7 @@ static bool is_container(TypeTableEntry *type_entry) {
3552	3668	case TypeTableEntryIdBoundFn:
3553	3669	case TypeTableEntryIdArgTuple:
3554	3670	case TypeTableEntryIdOpaque:
	3671	case TypeTableEntryIdPromise:
3555	3672	return false;
3556	3673	}
3557	3674	zig_unreachable();
...	...	@@ -3602,6 +3719,7 @@ void resolve_container_type(CodeGen g, TypeTableEntry type_entry) {
3602	3719	case TypeTableEntryIdVar:
3603	3720	case TypeTableEntryIdArgTuple:
3604	3721	case TypeTableEntryIdOpaque:
	3722	case TypeTableEntryIdPromise:
3605	3723	zig_unreachable();
3606	3724	}
3607	3725	}
...	...	@@ -3609,15 +3727,17 @@ void resolve_container_type(CodeGen g, TypeTableEntry type_entry) {
3609	3727	TypeTableEntry get_codegen_ptr_type(TypeTableEntry type) {
3610	3728	if (type->id == TypeTableEntryIdPointer) return type;
3611	3729	if (type->id == TypeTableEntryIdFn) return type;
	3730	if (type->id == TypeTableEntryIdPromise) return type;
3612	3731	if (type->id == TypeTableEntryIdMaybe) {
3613	3732	if (type->data.maybe.child_type->id == TypeTableEntryIdPointer) return type->data.maybe.child_type;
3614	3733	if (type->data.maybe.child_type->id == TypeTableEntryIdFn) return type->data.maybe.child_type;
	3734	if (type->data.maybe.child_type->id == TypeTableEntryIdPromise) return type->data.maybe.child_type;
3615	3735	}
3616	3736	return nullptr;
3617	3737	}
3618	3738
3619	3739	bool type_is_codegen_pointer(TypeTableEntry *type) {
3620		return get_codegen_ptr_type(type) != nullptr;
	3740	return get_codegen_ptr_type(type) == type;
3621	3741	}
3622	3742
3623	3743	uint32_t get_ptr_align(TypeTableEntry *type) {
...	...	@@ -3626,6 +3746,8 @@ uint32_t get_ptr_align(TypeTableEntry *type) {
3626	3746	return ptr_type->data.pointer.alignment;
3627	3747	} else if (ptr_type->id == TypeTableEntryIdFn) {
3628	3748	return (ptr_type->data.fn.fn_type_id.alignment == 0) ? 1 : ptr_type->data.fn.fn_type_id.alignment;
	3749	} else if (ptr_type->id == TypeTableEntryIdPromise) {
	3750	return 1;
3629	3751	} else {
3630	3752	zig_unreachable();
3631	3753	}
...	...	@@ -3640,7 +3762,7 @@ AstNode get_param_decl_node(FnTableEntry fn_entry, size_t index) {
3640	3762	return nullptr;
3641	3763	}
3642	3764
3643		void define_local_param_variables(CodeGen g, FnTableEntry fn_table_entry, VariableTableEntry **arg_vars) {
	3765	static void define_local_param_variables(CodeGen g, FnTableEntry fn_table_entry, VariableTableEntry **arg_vars) {
3644	3766	TypeTableEntry *fn_type = fn_table_entry->type_entry;
3645	3767	assert(!fn_type->data.fn.is_generic);
3646	3768	FnTypeId *fn_type_id = &fn_type->data.fn.fn_type_id;
...	...	@@ -3661,7 +3783,7 @@ void define_local_param_variables(CodeGen g, FnTableEntry fn_table_entry, Vari
3661	3783	TypeTableEntry *param_type = param_info->type;
3662	3784	bool is_noalias = param_info->is_noalias;
3663	3785
3664		if (is_noalias && !type_is_codegen_pointer(param_type)) {
	3786	if (is_noalias && get_codegen_ptr_type(param_type) == nullptr) {
3665	3787	add_node_error(g, param_decl_node, buf_sprintf("noalias on non-pointer parameter"));
3666	3788	}
3667	3789
...	...	@@ -4094,6 +4216,7 @@ bool handle_is_ptr(TypeTableEntry *type_entry) {
4094	4216	case TypeTableEntryIdErrorSet:
4095	4217	case TypeTableEntryIdFn:
4096	4218	case TypeTableEntryIdEnum:
	4219	case TypeTableEntryIdPromise:
4097	4220	return false;
4098	4221	case TypeTableEntryIdArray:
4099	4222	case TypeTableEntryIdStruct:
...	...	@@ -4102,8 +4225,7 @@ bool handle_is_ptr(TypeTableEntry *type_entry) {
4102	4225	return type_has_bits(type_entry->data.error_union.payload_type);
4103	4226	case TypeTableEntryIdMaybe:
4104	4227	return type_has_bits(type_entry->data.maybe.child_type) &&
4105		type_entry->data.maybe.child_type->id != TypeTableEntryIdPointer &&
4106		type_entry->data.maybe.child_type->id != TypeTableEntryIdFn;
	4228	!type_is_codegen_pointer(type_entry->data.maybe.child_type);
4107	4229	case TypeTableEntryIdUnion:
4108	4230	assert(type_entry->data.unionation.complete);
4109	4231	if (type_entry->data.unionation.gen_field_count == 0)
...	...	@@ -4205,6 +4327,7 @@ uint32_t fn_type_id_hash(FnTypeId *id) {
4205	4327	result += ((uint32_t)(id->cc)) * (uint32_t)3349388391;
4206	4328	result += id->is_var_args ? (uint32_t)1931444534 : 0;
4207	4329	result += hash_ptr(id->return_type);
	4330	result += hash_ptr(id->async_allocator_type);
4208	4331	result += id->alignment * 0xd3b3f3e2;
4209	4332	for (size_t i = 0; i < id->param_count; i += 1) {
4210	4333	FnTypeParamInfo *info = &id->param_info[i];
...	...	@@ -4219,7 +4342,8 @@ bool fn_type_id_eql(FnTypeId a, FnTypeId b) {
4219	4342	a->return_type != b->return_type \|\|
4220	4343	a->is_var_args != b->is_var_args \|\|
4221	4344	a->param_count != b->param_count \|\|
4222		a->alignment != b->alignment)
	4345	a->alignment != b->alignment \|\|
	4346	a->async_allocator_type != b->async_allocator_type)
4223	4347	{
4224	4348	return false;
4225	4349	}
...	...	@@ -4341,6 +4465,9 @@ static uint32_t hash_const_val(ConstExprValue *const_val) {
4341	4465	}
4342	4466	zig_unreachable();
4343	4467	}
	4468	case TypeTableEntryIdPromise:
	4469	// TODO better hashing algorithm
	4470	return 223048345;
4344	4471	case TypeTableEntryIdUndefLit:
4345	4472	return 162837799;
4346	4473	case TypeTableEntryIdNullLit:
...	...	@@ -4500,6 +4627,7 @@ bool type_requires_comptime(TypeTableEntry *type_entry) {
4500	4627	case TypeTableEntryIdPointer:
4501	4628	case TypeTableEntryIdVoid:
4502	4629	case TypeTableEntryIdUnreachable:
	4630	case TypeTableEntryIdPromise:
4503	4631	return false;
4504	4632	}
4505	4633	zig_unreachable();
...	...	@@ -4969,6 +5097,7 @@ bool const_values_equal(ConstExprValue a, ConstExprValue b) {
4969	5097	case TypeTableEntryIdInvalid:
4970	5098	case TypeTableEntryIdUnreachable:
4971	5099	case TypeTableEntryIdVar:
	5100	case TypeTableEntryIdPromise:
4972	5101	zig_unreachable();
4973	5102	}
4974	5103	zig_unreachable();
...	...	@@ -5243,6 +5372,8 @@ void render_const_value(CodeGen g, Buf buf, ConstExprValue *const_val) {
5243	5372	buf_appendf(buf, "(args value)");
5244	5373	return;
5245	5374	}
	5375	case TypeTableEntryIdPromise:
	5376	zig_unreachable();
5246	5377	}
5247	5378	zig_unreachable();
5248	5379	}
...	...	@@ -5304,6 +5435,7 @@ uint32_t type_id_hash(TypeId x) {
5304	5435	case TypeTableEntryIdBlock:
5305	5436	case TypeTableEntryIdBoundFn:
5306	5437	case TypeTableEntryIdArgTuple:
	5438	case TypeTableEntryIdPromise:
5307	5439	zig_unreachable();
5308	5440	case TypeTableEntryIdErrorUnion:
5309	5441	return hash_ptr(x.data.error_union.err_set_type) ^ hash_ptr(x.data.error_union.payload_type);
...	...	@@ -5341,6 +5473,7 @@ bool type_id_eql(TypeId a, TypeId b) {
5341	5473	case TypeTableEntryIdUndefLit:
5342	5474	case TypeTableEntryIdNullLit:
5343	5475	case TypeTableEntryIdMaybe:
	5476	case TypeTableEntryIdPromise:
5344	5477	case TypeTableEntryIdErrorSet:
5345	5478	case TypeTableEntryIdEnum:
5346	5479	case TypeTableEntryIdUnion:
...	...	@@ -5468,6 +5601,7 @@ static const TypeTableEntryId all_type_ids[] = {
5468	5601	TypeTableEntryIdBoundFn,
5469	5602	TypeTableEntryIdArgTuple,
5470	5603	TypeTableEntryIdOpaque,
	5604	TypeTableEntryIdPromise,
5471	5605	};
5472	5606
5473	5607	TypeTableEntryId type_id_at_index(size_t index) {
...	...	@@ -5532,6 +5666,8 @@ size_t type_id_index(TypeTableEntryId id) {
5532	5666	return 22;
5533	5667	case TypeTableEntryIdOpaque:
5534	5668	return 23;
	5669	case TypeTableEntryIdPromise:
	5670	return 24;
5535	5671	}
5536	5672	zig_unreachable();
5537	5673	}
...	...	@@ -5589,6 +5725,8 @@ const char *type_id_name(TypeTableEntryId id) {
5589	5725	return "ArgTuple";
5590	5726	case TypeTableEntryIdOpaque:
5591	5727	return "Opaque";
	5728	case TypeTableEntryIdPromise:
	5729	return "Promise";
5592	5730	}
5593	5731	zig_unreachable();
5594	5732	}
...	...	@@ -5671,3 +5809,14 @@ bool type_is_global_error_set(TypeTableEntry *err_set_type) {
5671	5809	assert(err_set_type->data.error_set.infer_fn == nullptr);
5672	5810	return err_set_type->data.error_set.err_count == UINT32_MAX;
5673	5811	}
	5812
	5813	uint32_t get_coro_frame_align_bytes(CodeGen *g) {
	5814	return g->pointer_size_bytes * 2;
	5815	}
	5816
	5817	bool fn_type_can_fail(FnTypeId *fn_type_id) {
	5818	TypeTableEntry *return_type = fn_type_id->return_type;
	5819	return return_type->id == TypeTableEntryIdErrorUnion \|\| return_type->id == TypeTableEntryIdErrorSet \|\|
	5820	fn_type_id->cc == CallingConventionAsync;
	5821	}
	5822

src/analyze.hpp+6-1

...	...	@@ -35,6 +35,8 @@ TypeTableEntry get_bound_fn_type(CodeGen g, FnTableEntry *fn_entry);
35	35	TypeTableEntry get_opaque_type(CodeGen g, Scope scope, AstNode source_node, const char *name);
36	36	TypeTableEntry get_struct_type(CodeGen g, const char type_name, const char field_names[],
37	37	TypeTableEntry *field_types[], size_t field_count);
	38	TypeTableEntry get_promise_type(CodeGen g, TypeTableEntry *result_type);
	39	TypeTableEntry get_promise_frame_type(CodeGen g, TypeTableEntry *return_type);
38	40	TypeTableEntry get_test_fn_type(CodeGen g);
39	41	bool handle_is_ptr(TypeTableEntry *type_entry);
40	42	void find_libc_include_path(CodeGen *g);
...	...	@@ -50,6 +52,7 @@ VariableTableEntry find_variable(CodeGen g, Scope orig_context, Buf name);
50	52	Tld find_decl(CodeGen g, Scope scope, Buf name);
51	53	void resolve_top_level_decl(CodeGen g, Tld tld, bool pointer_only, AstNode *source_node);
52	54	bool type_is_codegen_pointer(TypeTableEntry *type);
	55
53	56	TypeTableEntry get_codegen_ptr_type(TypeTableEntry type);
54	57	uint32_t get_ptr_align(TypeTableEntry *type);
55	58	TypeTableEntry validate_var_type(CodeGen g, AstNode source_node, TypeTableEntry type_entry);
...	...	@@ -92,7 +95,6 @@ void eval_min_max_value(CodeGen g, TypeTableEntry type_entry, ConstExprValue *
92	95	void eval_min_max_value_int(CodeGen g, TypeTableEntry int_type, BigInt *bigint, bool is_max);
93	96
94	97	void render_const_value(CodeGen g, Buf buf, ConstExprValue *const_val);
95		void define_local_param_variables(CodeGen g, FnTableEntry fn_table_entry, VariableTableEntry **arg_vars);
96	98	void analyze_fn_ir(CodeGen g, FnTableEntry fn_table_entry, AstNode *return_type_node);
97	99
98	100	ScopeBlock create_block_scope(AstNode node, Scope *parent);
...	...	@@ -190,4 +192,7 @@ void analyze_fn_body(CodeGen g, FnTableEntry fn_table_entry);
190	192
191	193	TypeTableEntry get_auto_err_set_type(CodeGen g, FnTableEntry *fn_entry);
192	194
	195	uint32_t get_coro_frame_align_bytes(CodeGen *g);
	196	bool fn_type_can_fail(FnTypeId *fn_type_id);
	197
193	198	#endif

src/ast_render.cpp+37

...	...	@@ -244,6 +244,14 @@ static const char *node_type_str(NodeType node_type) {
244	244	return "TestExpr";
245	245	case NodeTypeErrorSetDecl:
246	246	return "ErrorSetDecl";
	247	case NodeTypeCancel:
	248	return "Cancel";
	249	case NodeTypeResume:
	250	return "Resume";
	251	case NodeTypeAwaitExpr:
	252	return "AwaitExpr";
	253	case NodeTypeSuspend:
	254	return "Suspend";
247	255	}
248	256	zig_unreachable();
249	257	}
...	...	@@ -1037,6 +1045,35 @@ static void render_node_extra(AstRender ar, AstNode node, bool grouped) {
1037	1045	fprintf(ar->f, "}");
1038	1046	break;
1039	1047	}
	1048	case NodeTypeCancel:
	1049	{
	1050	fprintf(ar->f, "cancel ");
	1051	render_node_grouped(ar, node->data.cancel_expr.expr);
	1052	break;
	1053	}
	1054	case NodeTypeResume:
	1055	{
	1056	fprintf(ar->f, "resume ");
	1057	render_node_grouped(ar, node->data.resume_expr.expr);
	1058	break;
	1059	}
	1060	case NodeTypeAwaitExpr:
	1061	{
	1062	fprintf(ar->f, "await ");
	1063	render_node_grouped(ar, node->data.await_expr.expr);
	1064	break;
	1065	}
	1066	case NodeTypeSuspend:
	1067	{
	1068	fprintf(ar->f, "suspend");
	1069	if (node->data.suspend.block != nullptr) {
	1070	fprintf(ar->f, " \|");
	1071	render_node_grouped(ar, node->data.suspend.promise_symbol);
	1072	fprintf(ar->f, "\| ");
	1073	render_node_grouped(ar, node->data.suspend.block);
	1074	}
	1075	break;
	1076	}
1040	1077	case NodeTypeFnDecl:
1041	1078	case NodeTypeParamDecl:
1042	1079	case NodeTypeTestDecl:

src/codegen.cpp+572-17

...	...	@@ -381,6 +381,8 @@ static LLVMCallConv get_llvm_cc(CodeGen *g, CallingConvention cc) {
381	381	} else {
382	382	return LLVMCCallConv;
383	383	}
	384	case CallingConventionAsync:
	385	return LLVMFastCallConv;
384	386	}
385	387	zig_unreachable();
386	388	}
...	...	@@ -410,10 +412,10 @@ static uint32_t get_err_ret_trace_arg_index(CodeGen g, FnTableEntry fn_table_e
410	412	return UINT32_MAX;
411	413	}
412	414	TypeTableEntry *fn_type = fn_table_entry->type_entry;
413		TypeTableEntry *return_type = fn_type->data.fn.fn_type_id.return_type;
414		if (return_type->id != TypeTableEntryIdErrorUnion && return_type->id != TypeTableEntryIdErrorSet) {
	415	if (!fn_type_can_fail(&fn_type->data.fn.fn_type_id)) {
415	416	return UINT32_MAX;
416	417	}
	418	TypeTableEntry *return_type = fn_type->data.fn.fn_type_id.return_type;
417	419	bool first_arg_ret = type_has_bits(return_type) && handle_is_ptr(return_type);
418	420	return first_arg_ret ? 1 : 0;
419	421	}
...	...	@@ -540,7 +542,7 @@ static LLVMValueRef fn_llvm_value(CodeGen g, FnTableEntry fn_table_entry) {
540	542
541	543	if (!type_has_bits(return_type)) {
542	544	// nothing to do
543		} else if (return_type->id == TypeTableEntryIdPointer \|\| return_type->id == TypeTableEntryIdFn) {
	545	} else if (type_is_codegen_pointer(return_type)) {
544	546	addLLVMAttr(fn_table_entry->llvm_value, 0, "nonnull");
545	547	} else if (handle_is_ptr(return_type) &&
546	548	calling_convention_does_first_arg_return(fn_type->data.fn.fn_type_id.cc))
...	...	@@ -925,6 +927,177 @@ static LLVMValueRef get_memcpy_fn_val(CodeGen *g) {
925	927	return g->memcpy_fn_val;
926	928	}
927	929
	930	static LLVMValueRef get_coro_destroy_fn_val(CodeGen *g) {
	931	if (g->coro_destroy_fn_val)
	932	return g->coro_destroy_fn_val;
	933
	934	LLVMTypeRef param_types[] = {
	935	LLVMPointerType(LLVMInt8Type(), 0),
	936	};
	937	LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 1, false);
	938	Buf *name = buf_sprintf("llvm.coro.destroy");
	939	g->coro_destroy_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	940	assert(LLVMGetIntrinsicID(g->coro_destroy_fn_val));
	941
	942	return g->coro_destroy_fn_val;
	943	}
	944
	945	static LLVMValueRef get_coro_id_fn_val(CodeGen *g) {
	946	if (g->coro_id_fn_val)
	947	return g->coro_id_fn_val;
	948
	949	LLVMTypeRef param_types[] = {
	950	LLVMInt32Type(),
	951	LLVMPointerType(LLVMInt8Type(), 0),
	952	LLVMPointerType(LLVMInt8Type(), 0),
	953	LLVMPointerType(LLVMInt8Type(), 0),
	954	};
	955	LLVMTypeRef fn_type = LLVMFunctionType(ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()), param_types, 4, false);
	956	Buf *name = buf_sprintf("llvm.coro.id");
	957	g->coro_id_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	958	assert(LLVMGetIntrinsicID(g->coro_id_fn_val));
	959
	960	return g->coro_id_fn_val;
	961	}
	962
	963	static LLVMValueRef get_coro_alloc_fn_val(CodeGen *g) {
	964	if (g->coro_alloc_fn_val)
	965	return g->coro_alloc_fn_val;
	966
	967	LLVMTypeRef param_types[] = {
	968	ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()),
	969	};
	970	LLVMTypeRef fn_type = LLVMFunctionType(LLVMInt1Type(), param_types, 1, false);
	971	Buf *name = buf_sprintf("llvm.coro.alloc");
	972	g->coro_alloc_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	973	assert(LLVMGetIntrinsicID(g->coro_alloc_fn_val));
	974
	975	return g->coro_alloc_fn_val;
	976	}
	977
	978	static LLVMValueRef get_coro_size_fn_val(CodeGen *g) {
	979	if (g->coro_size_fn_val)
	980	return g->coro_size_fn_val;
	981
	982	LLVMTypeRef fn_type = LLVMFunctionType(g->builtin_types.entry_usize->type_ref, nullptr, 0, false);
	983	Buf name = buf_sprintf("llvm.coro.size.i%d", g->pointer_size_bytes 8);
	984	g->coro_size_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	985	assert(LLVMGetIntrinsicID(g->coro_size_fn_val));
	986
	987	return g->coro_size_fn_val;
	988	}
	989
	990	static LLVMValueRef get_coro_begin_fn_val(CodeGen *g) {
	991	if (g->coro_begin_fn_val)
	992	return g->coro_begin_fn_val;
	993
	994	LLVMTypeRef param_types[] = {
	995	ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()),
	996	LLVMPointerType(LLVMInt8Type(), 0),
	997	};
	998	LLVMTypeRef fn_type = LLVMFunctionType(LLVMPointerType(LLVMInt8Type(), 0), param_types, 2, false);
	999	Buf *name = buf_sprintf("llvm.coro.begin");
	1000	g->coro_begin_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1001	assert(LLVMGetIntrinsicID(g->coro_begin_fn_val));
	1002
	1003	return g->coro_begin_fn_val;
	1004	}
	1005
	1006	static LLVMValueRef get_coro_suspend_fn_val(CodeGen *g) {
	1007	if (g->coro_suspend_fn_val)
	1008	return g->coro_suspend_fn_val;
	1009
	1010	LLVMTypeRef param_types[] = {
	1011	ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()),
	1012	LLVMInt1Type(),
	1013	};
	1014	LLVMTypeRef fn_type = LLVMFunctionType(LLVMInt8Type(), param_types, 2, false);
	1015	Buf *name = buf_sprintf("llvm.coro.suspend");
	1016	g->coro_suspend_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1017	assert(LLVMGetIntrinsicID(g->coro_suspend_fn_val));
	1018
	1019	return g->coro_suspend_fn_val;
	1020	}
	1021
	1022	static LLVMValueRef get_coro_end_fn_val(CodeGen *g) {
	1023	if (g->coro_end_fn_val)
	1024	return g->coro_end_fn_val;
	1025
	1026	LLVMTypeRef param_types[] = {
	1027	LLVMPointerType(LLVMInt8Type(), 0),
	1028	LLVMInt1Type(),
	1029	};
	1030	LLVMTypeRef fn_type = LLVMFunctionType(LLVMInt1Type(), param_types, 2, false);
	1031	Buf *name = buf_sprintf("llvm.coro.end");
	1032	g->coro_end_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1033	assert(LLVMGetIntrinsicID(g->coro_end_fn_val));
	1034
	1035	return g->coro_end_fn_val;
	1036	}
	1037
	1038	static LLVMValueRef get_coro_free_fn_val(CodeGen *g) {
	1039	if (g->coro_free_fn_val)
	1040	return g->coro_free_fn_val;
	1041
	1042	LLVMTypeRef param_types[] = {
	1043	ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()),
	1044	LLVMPointerType(LLVMInt8Type(), 0),
	1045	};
	1046	LLVMTypeRef fn_type = LLVMFunctionType(LLVMPointerType(LLVMInt8Type(), 0), param_types, 2, false);
	1047	Buf *name = buf_sprintf("llvm.coro.free");
	1048	g->coro_free_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1049	assert(LLVMGetIntrinsicID(g->coro_free_fn_val));
	1050
	1051	return g->coro_free_fn_val;
	1052	}
	1053
	1054	static LLVMValueRef get_coro_resume_fn_val(CodeGen *g) {
	1055	if (g->coro_resume_fn_val)
	1056	return g->coro_resume_fn_val;
	1057
	1058	LLVMTypeRef param_types[] = {
	1059	LLVMPointerType(LLVMInt8Type(), 0),
	1060	};
	1061	LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 1, false);
	1062	Buf *name = buf_sprintf("llvm.coro.resume");
	1063	g->coro_resume_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1064	assert(LLVMGetIntrinsicID(g->coro_resume_fn_val));
	1065
	1066	return g->coro_resume_fn_val;
	1067	}
	1068
	1069	static LLVMValueRef get_coro_save_fn_val(CodeGen *g) {
	1070	if (g->coro_save_fn_val)
	1071	return g->coro_save_fn_val;
	1072
	1073	LLVMTypeRef param_types[] = {
	1074	LLVMPointerType(LLVMInt8Type(), 0),
	1075	};
	1076	LLVMTypeRef fn_type = LLVMFunctionType(ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()), param_types, 1, false);
	1077	Buf *name = buf_sprintf("llvm.coro.save");
	1078	g->coro_save_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1079	assert(LLVMGetIntrinsicID(g->coro_save_fn_val));
	1080
	1081	return g->coro_save_fn_val;
	1082	}
	1083
	1084	static LLVMValueRef get_coro_promise_fn_val(CodeGen *g) {
	1085	if (g->coro_promise_fn_val)
	1086	return g->coro_promise_fn_val;
	1087
	1088	LLVMTypeRef param_types[] = {
	1089	LLVMPointerType(LLVMInt8Type(), 0),
	1090	LLVMInt32Type(),
	1091	LLVMInt1Type(),
	1092	};
	1093	LLVMTypeRef fn_type = LLVMFunctionType(LLVMPointerType(LLVMInt8Type(), 0), param_types, 3, false);
	1094	Buf *name = buf_sprintf("llvm.coro.promise");
	1095	g->coro_promise_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
	1096	assert(LLVMGetIntrinsicID(g->coro_promise_fn_val));
	1097
	1098	return g->coro_promise_fn_val;
	1099	}
	1100
928	1101	static LLVMValueRef get_return_address_fn_val(CodeGen *g) {
929	1102	if (g->return_address_fn_val)
930	1103	return g->return_address_fn_val;
...	...	@@ -2506,6 +2679,25 @@ static LLVMValueRef ir_render_elem_ptr(CodeGen g, IrExecutable executable, IrI
2506	2679	}
2507	2680	}
2508	2681
	2682	static bool get_prefix_arg_err_ret_stack(CodeGen g, FnTypeId fn_type_id) {
	2683	return g->have_err_ret_tracing &&
	2684	(fn_type_id->return_type->id == TypeTableEntryIdErrorUnion \|\|
	2685	fn_type_id->return_type->id == TypeTableEntryIdErrorSet \|\|
	2686	fn_type_id->cc == CallingConventionAsync);
	2687	}
	2688
	2689	static size_t get_async_allocator_arg_index(CodeGen g, FnTypeId fn_type_id) {
	2690	// 0 1 2 3
	2691	// err_ret_stack allocator_ptr err_code other_args...
	2692	return get_prefix_arg_err_ret_stack(g, fn_type_id) ? 1 : 0;
	2693	}
	2694
	2695	static size_t get_async_err_code_arg_index(CodeGen g, FnTypeId fn_type_id) {
	2696	// 0 1 2 3
	2697	// err_ret_stack allocator_ptr err_code other_args...
	2698	return 1 + get_async_allocator_arg_index(g, fn_type_id);
	2699	}
	2700
2509	2701	static LLVMValueRef ir_render_call(CodeGen g, IrExecutable executable, IrInstructionCall *instruction) {
2510	2702	LLVMValueRef fn_val;
2511	2703	TypeTableEntry *fn_type;
...	...	@@ -2519,11 +2711,15 @@ static LLVMValueRef ir_render_call(CodeGen g, IrExecutable executable, IrInstr
2519	2711	}
2520	2712
2521	2713	FnTypeId *fn_type_id = &fn_type->data.fn.fn_type_id;
	2714
2522	2715	TypeTableEntry *src_return_type = fn_type_id->return_type;
2523	2716	bool ret_has_bits = type_has_bits(src_return_type);
2524		bool first_arg_ret = ret_has_bits && handle_is_ptr(src_return_type);
2525		bool prefix_arg_err_ret_stack = g->have_err_ret_tracing && (src_return_type->id == TypeTableEntryIdErrorUnion \|\| src_return_type->id == TypeTableEntryIdErrorSet);
2526		size_t actual_param_count = instruction->arg_count + (first_arg_ret ? 1 : 0) + (prefix_arg_err_ret_stack ? 1 : 0);
	2717
	2718	bool first_arg_ret = ret_has_bits && handle_is_ptr(src_return_type) &&
	2719	calling_convention_does_first_arg_return(fn_type->data.fn.fn_type_id.cc);
	2720	bool prefix_arg_err_ret_stack = get_prefix_arg_err_ret_stack(g, fn_type_id);
	2721	// +2 for the async args
	2722	size_t actual_param_count = instruction->arg_count + (first_arg_ret ? 1 : 0) + (prefix_arg_err_ret_stack ? 1 : 0) + 2;
2527	2723	bool is_var_args = fn_type_id->is_var_args;
2528	2724	LLVMValueRef *gen_param_values = allocate<LLVMValueRef>(actual_param_count);
2529	2725	size_t gen_param_index = 0;
...	...	@@ -2535,6 +2731,14 @@ static LLVMValueRef ir_render_call(CodeGen g, IrExecutable executable, IrInstr
2535	2731	gen_param_values[gen_param_index] = g->cur_err_ret_trace_val;
2536	2732	gen_param_index += 1;
2537	2733	}
	2734	if (instruction->is_async) {
	2735	gen_param_values[gen_param_index] = ir_llvm_value(g, instruction->async_allocator);
	2736	gen_param_index += 1;
	2737
	2738	LLVMValueRef err_val_ptr = LLVMBuildStructGEP(g->builder, instruction->tmp_ptr, err_union_err_index, "");
	2739	gen_param_values[gen_param_index] = err_val_ptr;
	2740	gen_param_index += 1;
	2741	}
2538	2742	for (size_t call_i = 0; call_i < instruction->arg_count; call_i += 1) {
2539	2743	IrInstruction *param_instruction = instruction->args[call_i];
2540	2744	TypeTableEntry *param_type = param_instruction->value.type;
...	...	@@ -2572,6 +2776,12 @@ static LLVMValueRef ir_render_call(CodeGen g, IrExecutable executable, IrInstr
2572	2776	}
2573	2777	}
2574	2778
	2779	if (instruction->is_async) {
	2780	LLVMValueRef payload_ptr = LLVMBuildStructGEP(g->builder, instruction->tmp_ptr, err_union_payload_index, "");
	2781	LLVMBuildStore(g->builder, result, payload_ptr);
	2782	return instruction->tmp_ptr;
	2783	}
	2784
2575	2785	if (src_return_type->id == TypeTableEntryIdUnreachable) {
2576	2786	return LLVMBuildUnreachable(g->builder);
2577	2787	} else if (!ret_has_bits) {
...	...	@@ -2783,7 +2993,7 @@ static LLVMValueRef gen_non_null_bit(CodeGen g, TypeTableEntry maybe_type, LLV
2783	2993	if (child_type->zero_bits) {
2784	2994	return maybe_handle;
2785	2995	} else {
2786		bool maybe_is_ptr = (child_type->id == TypeTableEntryIdPointer \|\| child_type->id == TypeTableEntryIdFn);
	2996	bool maybe_is_ptr = type_is_codegen_pointer(child_type);
2787	2997	if (maybe_is_ptr) {
2788	2998	return LLVMBuildICmp(g->builder, LLVMIntNE, maybe_handle, LLVMConstNull(maybe_type->type_ref), "");
2789	2999	} else {
...	...	@@ -2823,7 +3033,7 @@ static LLVMValueRef ir_render_unwrap_maybe(CodeGen g, IrExecutable executable,
2823	3033	if (child_type->zero_bits) {
2824	3034	return nullptr;
2825	3035	} else {
2826		bool maybe_is_ptr = (child_type->id == TypeTableEntryIdPointer \|\| child_type->id == TypeTableEntryIdFn);
	3036	bool maybe_is_ptr = type_is_codegen_pointer(child_type);
2827	3037	if (maybe_is_ptr) {
2828	3038	return maybe_ptr;
2829	3039	} else {
...	...	@@ -3046,6 +3256,10 @@ static LLVMValueRef ir_render_align_cast(CodeGen g, IrExecutable executable, I
3046	3256	{
3047	3257	align_bytes = target_type->data.maybe.child_type->data.fn.fn_type_id.alignment;
3048	3258	ptr_val = target_val;
	3259	} else if (target_type->id == TypeTableEntryIdMaybe &&
	3260	target_type->data.maybe.child_type->id == TypeTableEntryIdPromise)
	3261	{
	3262	zig_panic("TODO audit this function");
3049	3263	} else if (target_type->id == TypeTableEntryIdStruct && target_type->data.structure.is_slice) {
3050	3264	TypeTableEntry *slice_ptr_type = target_type->data.structure.fields[slice_ptr_index].type_entry;
3051	3265	align_bytes = slice_ptr_type->data.pointer.alignment;
...	...	@@ -3088,6 +3302,20 @@ static LLVMValueRef ir_render_error_return_trace(CodeGen g, IrExecutable execu
3088	3302	return g->cur_err_ret_trace_val;
3089	3303	}
3090	3304
	3305	static LLVMValueRef ir_render_cancel(CodeGen g, IrExecutable executable, IrInstructionCancel *instruction) {
	3306	LLVMValueRef target_handle = ir_llvm_value(g, instruction->target);
	3307	LLVMBuildCall(g->builder, get_coro_destroy_fn_val(g), &target_handle, 1, "");
	3308	return nullptr;
	3309	}
	3310
	3311	static LLVMValueRef ir_render_get_implicit_allocator(CodeGen g, IrExecutable executable,
	3312	IrInstructionGetImplicitAllocator *instruction)
	3313	{
	3314	assert(instruction->id == ImplicitAllocatorIdArg);
	3315	size_t allocator_arg_index = get_async_allocator_arg_index(g, &g->cur_fn->type_entry->data.fn.fn_type_id);
	3316	return LLVMGetParam(g->cur_fn_val, allocator_arg_index);
	3317	}
	3318
3091	3319	static LLVMAtomicOrdering to_LLVMAtomicOrdering(AtomicOrder atomic_order) {
3092	3320	switch (atomic_order) {
3093	3321	case AtomicOrderUnordered: return LLVMAtomicOrderingUnordered;
...	...	@@ -3100,6 +3328,23 @@ static LLVMAtomicOrdering to_LLVMAtomicOrdering(AtomicOrder atomic_order) {
3100	3328	zig_unreachable();
3101	3329	}
3102	3330
	3331	static LLVMAtomicRMWBinOp to_LLVMAtomicRMWBinOp(AtomicRmwOp op, bool is_signed) {
	3332	switch (op) {
	3333	case AtomicRmwOp_xchg: return LLVMAtomicRMWBinOpXchg;
	3334	case AtomicRmwOp_add: return LLVMAtomicRMWBinOpAdd;
	3335	case AtomicRmwOp_sub: return LLVMAtomicRMWBinOpSub;
	3336	case AtomicRmwOp_and: return LLVMAtomicRMWBinOpAnd;
	3337	case AtomicRmwOp_nand: return LLVMAtomicRMWBinOpNand;
	3338	case AtomicRmwOp_or: return LLVMAtomicRMWBinOpOr;
	3339	case AtomicRmwOp_xor: return LLVMAtomicRMWBinOpXor;
	3340	case AtomicRmwOp_max:
	3341	return is_signed ? LLVMAtomicRMWBinOpMax : LLVMAtomicRMWBinOpUMax;
	3342	case AtomicRmwOp_min:
	3343	return is_signed ? LLVMAtomicRMWBinOpMin : LLVMAtomicRMWBinOpUMin;
	3344	}
	3345	zig_unreachable();
	3346	}
	3347
3103	3348	static LLVMValueRef ir_render_cmpxchg(CodeGen g, IrExecutable executable, IrInstructionCmpxchg *instruction) {
3104	3349	LLVMValueRef ptr_val = ir_llvm_value(g, instruction->ptr);
3105	3350	LLVMValueRef cmp_val = ir_llvm_value(g, instruction->cmp_value);
...	...	@@ -3508,9 +3753,7 @@ static LLVMValueRef ir_render_maybe_wrap(CodeGen g, IrExecutable executable, I
3508	3753	}
3509	3754
3510	3755	LLVMValueRef payload_val = ir_llvm_value(g, instruction->value);
3511		if (child_type->id == TypeTableEntryIdPointer \|\|
3512		child_type->id == TypeTableEntryIdFn)
3513		{
	3756	if (type_is_codegen_pointer(child_type)) {
3514	3757	return payload_val;
3515	3758	}
3516	3759
...	...	@@ -3682,6 +3925,264 @@ static LLVMValueRef ir_render_panic(CodeGen g, IrExecutable executable, IrInst
3682	3925	return nullptr;
3683	3926	}
3684	3927
	3928	static LLVMValueRef ir_render_coro_id(CodeGen g, IrExecutable executable, IrInstructionCoroId *instruction) {
	3929	LLVMValueRef promise_ptr = ir_llvm_value(g, instruction->promise_ptr);
	3930	LLVMValueRef align_val = LLVMConstInt(LLVMInt32Type(), get_coro_frame_align_bytes(g), false);
	3931	LLVMValueRef null = LLVMConstIntToPtr(LLVMConstNull(g->builtin_types.entry_usize->type_ref),
	3932	LLVMPointerType(LLVMInt8Type(), 0));
	3933	LLVMValueRef params[] = {
	3934	align_val,
	3935	promise_ptr,
	3936	null,
	3937	null,
	3938	};
	3939	return LLVMBuildCall(g->builder, get_coro_id_fn_val(g), params, 4, "");
	3940	}
	3941
	3942	static LLVMValueRef ir_render_coro_alloc(CodeGen g, IrExecutable executable, IrInstructionCoroAlloc *instruction) {
	3943	LLVMValueRef token = ir_llvm_value(g, instruction->coro_id);
	3944	return LLVMBuildCall(g->builder, get_coro_alloc_fn_val(g), &token, 1, "");
	3945	}
	3946
	3947	static LLVMValueRef ir_render_coro_size(CodeGen g, IrExecutable executable, IrInstructionCoroSize *instruction) {
	3948	return LLVMBuildCall(g->builder, get_coro_size_fn_val(g), nullptr, 0, "");
	3949	}
	3950
	3951	static LLVMValueRef ir_render_coro_begin(CodeGen g, IrExecutable executable, IrInstructionCoroBegin *instruction) {
	3952	LLVMValueRef coro_id = ir_llvm_value(g, instruction->coro_id);
	3953	LLVMValueRef coro_mem_ptr = ir_llvm_value(g, instruction->coro_mem_ptr);
	3954	LLVMValueRef params[] = {
	3955	coro_id,
	3956	coro_mem_ptr,
	3957	};
	3958	return LLVMBuildCall(g->builder, get_coro_begin_fn_val(g), params, 2, "");
	3959	}
	3960
	3961	static LLVMValueRef ir_render_coro_alloc_fail(CodeGen g, IrExecutable executable,
	3962	IrInstructionCoroAllocFail *instruction)
	3963	{
	3964	size_t err_code_ptr_arg_index = get_async_err_code_arg_index(g, &g->cur_fn->type_entry->data.fn.fn_type_id);
	3965	LLVMValueRef err_code_ptr_val = LLVMGetParam(g->cur_fn_val, err_code_ptr_arg_index);
	3966	LLVMValueRef err_code = ir_llvm_value(g, instruction->err_val);
	3967	LLVMBuildStore(g->builder, err_code, err_code_ptr_val);
	3968
	3969	LLVMValueRef return_value;
	3970	if (ir_want_runtime_safety(g, &instruction->base)) {
	3971	return_value = LLVMConstNull(LLVMPointerType(LLVMInt8Type(), 0));
	3972	} else {
	3973	return_value = LLVMGetUndef(LLVMPointerType(LLVMInt8Type(), 0));
	3974	}
	3975	LLVMBuildRet(g->builder, return_value);
	3976	return nullptr;
	3977	}
	3978
	3979	static LLVMValueRef ir_render_coro_suspend(CodeGen g, IrExecutable executable, IrInstructionCoroSuspend *instruction) {
	3980	LLVMValueRef save_point;
	3981	if (instruction->save_point == nullptr) {
	3982	save_point = LLVMConstNull(ZigLLVMTokenTypeInContext(LLVMGetGlobalContext()));
	3983	} else {
	3984	save_point = ir_llvm_value(g, instruction->save_point);
	3985	}
	3986	LLVMValueRef is_final = ir_llvm_value(g, instruction->is_final);
	3987	LLVMValueRef params[] = {
	3988	save_point,
	3989	is_final,
	3990	};
	3991	return LLVMBuildCall(g->builder, get_coro_suspend_fn_val(g), params, 2, "");
	3992	}
	3993
	3994	static LLVMValueRef ir_render_coro_end(CodeGen g, IrExecutable executable, IrInstructionCoroEnd *instruction) {
	3995	LLVMValueRef params[] = {
	3996	LLVMConstNull(LLVMPointerType(LLVMInt8Type(), 0)),
	3997	LLVMConstNull(LLVMInt1Type()),
	3998	};
	3999	return LLVMBuildCall(g->builder, get_coro_end_fn_val(g), params, 2, "");
	4000	}
	4001
	4002	static LLVMValueRef ir_render_coro_free(CodeGen g, IrExecutable executable, IrInstructionCoroFree *instruction) {
	4003	LLVMValueRef coro_id = ir_llvm_value(g, instruction->coro_id);
	4004	LLVMValueRef coro_handle = ir_llvm_value(g, instruction->coro_handle);
	4005	LLVMValueRef params[] = {
	4006	coro_id,
	4007	coro_handle,
	4008	};
	4009	return LLVMBuildCall(g->builder, get_coro_free_fn_val(g), params, 2, "");
	4010	}
	4011
	4012	static LLVMValueRef ir_render_coro_resume(CodeGen g, IrExecutable executable, IrInstructionCoroResume *instruction) {
	4013	LLVMValueRef awaiter_handle = ir_llvm_value(g, instruction->awaiter_handle);
	4014	return LLVMBuildCall(g->builder, get_coro_resume_fn_val(g), &awaiter_handle, 1, "");
	4015	}
	4016
	4017	static LLVMValueRef ir_render_coro_save(CodeGen g, IrExecutable executable, IrInstructionCoroSave *instruction) {
	4018	LLVMValueRef coro_handle = ir_llvm_value(g, instruction->coro_handle);
	4019	return LLVMBuildCall(g->builder, get_coro_save_fn_val(g), &coro_handle, 1, "");
	4020	}
	4021
	4022	static LLVMValueRef ir_render_coro_promise(CodeGen g, IrExecutable executable, IrInstructionCoroPromise *instruction) {
	4023	LLVMValueRef coro_handle = ir_llvm_value(g, instruction->coro_handle);
	4024	LLVMValueRef params[] = {
	4025	coro_handle,
	4026	LLVMConstInt(LLVMInt32Type(), get_coro_frame_align_bytes(g), false),
	4027	LLVMConstNull(LLVMInt1Type()),
	4028	};
	4029	LLVMValueRef uncasted_result = LLVMBuildCall(g->builder, get_coro_promise_fn_val(g), params, 3, "");
	4030	return LLVMBuildBitCast(g->builder, uncasted_result, instruction->base.value.type->type_ref, "");
	4031	}
	4032
	4033	static LLVMValueRef get_coro_alloc_helper_fn_val(CodeGen g, LLVMTypeRef alloc_fn_type_ref, TypeTableEntry fn_type) {
	4034	if (g->coro_alloc_helper_fn_val != nullptr)
	4035	return g->coro_alloc_helper_fn_val;
	4036
	4037	assert(fn_type->id == TypeTableEntryIdFn);
	4038
	4039	TypeTableEntry *ptr_to_err_code_type = get_pointer_to_type(g, g->builtin_types.entry_global_error_set, false);
	4040
	4041	LLVMTypeRef alloc_raw_fn_type_ref = LLVMGetElementType(alloc_fn_type_ref);
	4042	LLVMTypeRef *alloc_fn_arg_types = allocate<LLVMTypeRef>(LLVMCountParamTypes(alloc_raw_fn_type_ref));
	4043	LLVMGetParamTypes(alloc_raw_fn_type_ref, alloc_fn_arg_types);
	4044
	4045	ZigList<LLVMTypeRef> arg_types = {};
	4046	arg_types.append(alloc_fn_type_ref);
	4047	if (g->have_err_ret_tracing) {
	4048	arg_types.append(alloc_fn_arg_types[1]);
	4049	}
	4050	arg_types.append(alloc_fn_arg_types[g->have_err_ret_tracing ? 2 : 1]);
	4051	arg_types.append(ptr_to_err_code_type->type_ref);
	4052	arg_types.append(g->builtin_types.entry_usize->type_ref);
	4053
	4054	LLVMTypeRef fn_type_ref = LLVMFunctionType(LLVMPointerType(LLVMInt8Type(), 0),
	4055	arg_types.items, arg_types.length, false);
	4056
	4057	Buf *fn_name = get_mangled_name(g, buf_create_from_str("__zig_coro_alloc_helper"), false);
	4058	LLVMValueRef fn_val = LLVMAddFunction(g->module, buf_ptr(fn_name), fn_type_ref);
	4059	LLVMSetLinkage(fn_val, LLVMInternalLinkage);
	4060	LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
	4061	addLLVMFnAttr(fn_val, "nounwind");
	4062	addLLVMArgAttr(fn_val, (unsigned)0, "nonnull");
	4063	addLLVMArgAttr(fn_val, (unsigned)1, "nonnull");
	4064
	4065	LLVMBasicBlockRef prev_block = LLVMGetInsertBlock(g->builder);
	4066	LLVMValueRef prev_debug_location = LLVMGetCurrentDebugLocation(g->builder);
	4067	FnTableEntry *prev_cur_fn = g->cur_fn;
	4068	LLVMValueRef prev_cur_fn_val = g->cur_fn_val;
	4069
	4070	LLVMBasicBlockRef entry_block = LLVMAppendBasicBlock(fn_val, "Entry");
	4071	LLVMPositionBuilderAtEnd(g->builder, entry_block);
	4072	ZigLLVMClearCurrentDebugLocation(g->builder);
	4073	g->cur_fn = nullptr;
	4074	g->cur_fn_val = fn_val;
	4075
	4076	LLVMValueRef sret_ptr = LLVMBuildAlloca(g->builder, LLVMGetElementType(alloc_fn_arg_types[0]), "");
	4077
	4078	size_t next_arg = 0;
	4079	LLVMValueRef alloc_fn_val = LLVMGetParam(fn_val, next_arg);
	4080	next_arg += 1;
	4081
	4082	LLVMValueRef stack_trace_val;
	4083	if (g->have_err_ret_tracing) {
	4084	stack_trace_val = LLVMGetParam(fn_val, next_arg);
	4085	next_arg += 1;
	4086	}
	4087
	4088	LLVMValueRef allocator_val = LLVMGetParam(fn_val, next_arg);
	4089	next_arg += 1;
	4090	LLVMValueRef err_code_ptr = LLVMGetParam(fn_val, next_arg);
	4091	next_arg += 1;
	4092	LLVMValueRef coro_size = LLVMGetParam(fn_val, next_arg);
	4093	next_arg += 1;
	4094	LLVMValueRef alignment_val = LLVMConstInt(g->builtin_types.entry_u29->type_ref,
	4095	get_coro_frame_align_bytes(g), false);
	4096
	4097	ZigList<LLVMValueRef> args = {};
	4098	args.append(sret_ptr);
	4099	if (g->have_err_ret_tracing) {
	4100	args.append(stack_trace_val);
	4101	}
	4102	args.append(allocator_val);
	4103	args.append(coro_size);
	4104	args.append(alignment_val);
	4105	ZigLLVMBuildCall(g->builder, alloc_fn_val, args.items, args.length,
	4106	get_llvm_cc(g, CallingConventionUnspecified), ZigLLVM_FnInlineAuto, "");
	4107	LLVMValueRef err_val_ptr = LLVMBuildStructGEP(g->builder, sret_ptr, err_union_err_index, "");
	4108	LLVMValueRef err_val = LLVMBuildLoad(g->builder, err_val_ptr, "");
	4109	LLVMBuildStore(g->builder, err_val, err_code_ptr);
	4110	LLVMValueRef ok_bit = LLVMBuildICmp(g->builder, LLVMIntEQ, err_val, LLVMConstNull(LLVMTypeOf(err_val)), "");
	4111	LLVMBasicBlockRef ok_block = LLVMAppendBasicBlock(fn_val, "AllocOk");
	4112	LLVMBasicBlockRef fail_block = LLVMAppendBasicBlock(fn_val, "AllocFail");
	4113	LLVMBuildCondBr(g->builder, ok_bit, ok_block, fail_block);
	4114
	4115	LLVMPositionBuilderAtEnd(g->builder, ok_block);
	4116	LLVMValueRef payload_ptr = LLVMBuildStructGEP(g->builder, sret_ptr, err_union_payload_index, "");
	4117	TypeTableEntry *u8_ptr_type = get_pointer_to_type(g, g->builtin_types.entry_u8, false);
	4118	TypeTableEntry *slice_type = get_slice_type(g, u8_ptr_type);
	4119	size_t ptr_field_index = slice_type->data.structure.fields[slice_ptr_index].gen_index;
	4120	LLVMValueRef ptr_field_ptr = LLVMBuildStructGEP(g->builder, payload_ptr, ptr_field_index, "");
	4121	LLVMValueRef ptr_val = LLVMBuildLoad(g->builder, ptr_field_ptr, "");
	4122	LLVMBuildRet(g->builder, ptr_val);
	4123
	4124	LLVMPositionBuilderAtEnd(g->builder, fail_block);
	4125	LLVMBuildRet(g->builder, LLVMConstNull(LLVMPointerType(LLVMInt8Type(), 0)));
	4126
	4127	g->cur_fn = prev_cur_fn;
	4128	g->cur_fn_val = prev_cur_fn_val;
	4129	LLVMPositionBuilderAtEnd(g->builder, prev_block);
	4130	LLVMSetCurrentDebugLocation(g->builder, prev_debug_location);
	4131
	4132	g->coro_alloc_helper_fn_val = fn_val;
	4133	return fn_val;
	4134	}
	4135
	4136	static LLVMValueRef ir_render_coro_alloc_helper(CodeGen g, IrExecutable executable,
	4137	IrInstructionCoroAllocHelper *instruction)
	4138	{
	4139	LLVMValueRef alloc_fn = ir_llvm_value(g, instruction->alloc_fn);
	4140	LLVMValueRef coro_size = ir_llvm_value(g, instruction->coro_size);
	4141	LLVMValueRef fn_val = get_coro_alloc_helper_fn_val(g, LLVMTypeOf(alloc_fn), instruction->alloc_fn->value.type);
	4142	size_t err_code_ptr_arg_index = get_async_err_code_arg_index(g, &g->cur_fn->type_entry->data.fn.fn_type_id);
	4143	size_t allocator_arg_index = get_async_allocator_arg_index(g, &g->cur_fn->type_entry->data.fn.fn_type_id);
	4144
	4145	ZigList<LLVMValueRef> params = {};
	4146	params.append(alloc_fn);
	4147	uint32_t err_ret_trace_arg_index = get_err_ret_trace_arg_index(g, g->cur_fn);
	4148	if (err_ret_trace_arg_index != UINT32_MAX) {
	4149	params.append(LLVMGetParam(g->cur_fn_val, err_ret_trace_arg_index));
	4150	}
	4151	params.append(LLVMGetParam(g->cur_fn_val, allocator_arg_index));
	4152	params.append(LLVMGetParam(g->cur_fn_val, err_code_ptr_arg_index));
	4153	params.append(coro_size);
	4154
	4155	return ZigLLVMBuildCall(g->builder, fn_val, params.items, params.length,
	4156	get_llvm_cc(g, CallingConventionUnspecified), ZigLLVM_FnInlineAuto, "");
	4157	}
	4158
	4159	static LLVMValueRef ir_render_atomic_rmw(CodeGen g, IrExecutable executable,
	4160	IrInstructionAtomicRmw *instruction)
	4161	{
	4162	bool is_signed;
	4163	TypeTableEntry *operand_type = instruction->operand->value.type;
	4164	if (operand_type->id == TypeTableEntryIdInt) {
	4165	is_signed = operand_type->data.integral.is_signed;
	4166	} else {
	4167	is_signed = false;
	4168	}
	4169	LLVMAtomicRMWBinOp op = to_LLVMAtomicRMWBinOp(instruction->resolved_op, is_signed);
	4170	LLVMAtomicOrdering ordering = to_LLVMAtomicOrdering(instruction->resolved_ordering);
	4171	LLVMValueRef ptr = ir_llvm_value(g, instruction->ptr);
	4172	LLVMValueRef operand = ir_llvm_value(g, instruction->operand);
	4173
	4174	if (get_codegen_ptr_type(operand_type) == nullptr) {
	4175	return LLVMBuildAtomicRMW(g->builder, op, ptr, operand, ordering, false);
	4176	}
	4177
	4178	// it's a pointer but we need to treat it as an int
	4179	LLVMValueRef casted_ptr = LLVMBuildBitCast(g->builder, ptr,
	4180	LLVMPointerType(g->builtin_types.entry_usize->type_ref, 0), "");
	4181	LLVMValueRef casted_operand = LLVMBuildPtrToInt(g->builder, operand, g->builtin_types.entry_usize->type_ref, "");
	4182	LLVMValueRef uncasted_result = LLVMBuildAtomicRMW(g->builder, op, casted_ptr, casted_operand, ordering, false);
	4183	return LLVMBuildIntToPtr(g->builder, uncasted_result, operand_type->type_ref, "");
	4184	}
	4185
3685	4186	static void set_debug_location(CodeGen g, IrInstruction instruction) {
3686	4187	AstNode *source_node = instruction->source_node;
3687	4188	Scope *scope = instruction->scope;
...	...	@@ -3745,7 +4246,9 @@ static LLVMValueRef ir_render_instruction(CodeGen g, IrExecutable executable,
3745	4246	case IrInstructionIdTagType:
3746	4247	case IrInstructionIdExport:
3747	4248	case IrInstructionIdErrorUnion:
	4249	case IrInstructionIdPromiseResultType:
3748	4250	zig_unreachable();
	4251
3749	4252	case IrInstructionIdReturn:
3750	4253	return ir_render_return(g, executable, (IrInstructionReturn *)instruction);
3751	4254	case IrInstructionIdDeclVar:
...	...	@@ -3862,12 +4365,43 @@ static LLVMValueRef ir_render_instruction(CodeGen g, IrExecutable executable,
3862	4365	return ir_render_align_cast(g, executable, (IrInstructionAlignCast *)instruction);
3863	4366	case IrInstructionIdErrorReturnTrace:
3864	4367	return ir_render_error_return_trace(g, executable, (IrInstructionErrorReturnTrace *)instruction);
	4368	case IrInstructionIdCancel:
	4369	return ir_render_cancel(g, executable, (IrInstructionCancel *)instruction);
	4370	case IrInstructionIdGetImplicitAllocator:
	4371	return ir_render_get_implicit_allocator(g, executable, (IrInstructionGetImplicitAllocator *)instruction);
	4372	case IrInstructionIdCoroId:
	4373	return ir_render_coro_id(g, executable, (IrInstructionCoroId *)instruction);
	4374	case IrInstructionIdCoroAlloc:
	4375	return ir_render_coro_alloc(g, executable, (IrInstructionCoroAlloc *)instruction);
	4376	case IrInstructionIdCoroSize:
	4377	return ir_render_coro_size(g, executable, (IrInstructionCoroSize *)instruction);
	4378	case IrInstructionIdCoroBegin:
	4379	return ir_render_coro_begin(g, executable, (IrInstructionCoroBegin *)instruction);
	4380	case IrInstructionIdCoroAllocFail:
	4381	return ir_render_coro_alloc_fail(g, executable, (IrInstructionCoroAllocFail *)instruction);
	4382	case IrInstructionIdCoroSuspend:
	4383	return ir_render_coro_suspend(g, executable, (IrInstructionCoroSuspend *)instruction);
	4384	case IrInstructionIdCoroEnd:
	4385	return ir_render_coro_end(g, executable, (IrInstructionCoroEnd *)instruction);
	4386	case IrInstructionIdCoroFree:
	4387	return ir_render_coro_free(g, executable, (IrInstructionCoroFree *)instruction);
	4388	case IrInstructionIdCoroResume:
	4389	return ir_render_coro_resume(g, executable, (IrInstructionCoroResume *)instruction);
	4390	case IrInstructionIdCoroSave:
	4391	return ir_render_coro_save(g, executable, (IrInstructionCoroSave *)instruction);
	4392	case IrInstructionIdCoroPromise:
	4393	return ir_render_coro_promise(g, executable, (IrInstructionCoroPromise *)instruction);
	4394	case IrInstructionIdCoroAllocHelper:
	4395	return ir_render_coro_alloc_helper(g, executable, (IrInstructionCoroAllocHelper *)instruction);
	4396	case IrInstructionIdAtomicRmw:
	4397	return ir_render_atomic_rmw(g, executable, (IrInstructionAtomicRmw *)instruction);
3865	4398	}
3866	4399	zig_unreachable();
3867	4400	}
3868	4401
3869	4402	static void ir_render(CodeGen g, FnTableEntry fn_entry) {
3870	4403	assert(fn_entry);
	4404
3871	4405	IrExecutable *executable = &fn_entry->analyzed_executable;
3872	4406	assert(executable->basic_block_list.length > 0);
3873	4407	for (size_t block_i = 0; block_i < executable->basic_block_list.length; block_i += 1) {
...	...	@@ -4009,6 +4543,7 @@ static LLVMValueRef pack_const_int(CodeGen *g, LLVMTypeRef big_int_type_ref, Con
4009	4543	case TypeTableEntryIdPointer:
4010	4544	case TypeTableEntryIdFn:
4011	4545	case TypeTableEntryIdMaybe:
	4546	case TypeTableEntryIdPromise:
4012	4547	{
4013	4548	LLVMValueRef ptr_val = gen_const_val(g, const_val, "");
4014	4549	LLVMValueRef ptr_size_int_val = LLVMConstPtrToInt(ptr_val, g->builtin_types.entry_usize->type_ref);
...	...	@@ -4104,9 +4639,7 @@ static LLVMValueRef gen_const_val(CodeGen g, ConstExprValue const_val, const c
4104	4639	TypeTableEntry *child_type = type_entry->data.maybe.child_type;
4105	4640	if (child_type->zero_bits) {
4106	4641	return LLVMConstInt(LLVMInt1Type(), const_val->data.x_maybe ? 1 : 0, false);
4107		} else if (child_type->id == TypeTableEntryIdPointer \|\|
4108		child_type->id == TypeTableEntryIdFn)
4109		{
	4642	} else if (type_is_codegen_pointer(child_type)) {
4110	4643	if (const_val->data.x_maybe) {
4111	4644	return gen_const_val(g, const_val->data.x_maybe, "");
4112	4645	} else {
...	...	@@ -4426,6 +4959,7 @@ static LLVMValueRef gen_const_val(CodeGen g, ConstExprValue const_val, const c
4426	4959	case TypeTableEntryIdVar:
4427	4960	case TypeTableEntryIdArgTuple:
4428	4961	case TypeTableEntryIdOpaque:
	4962	case TypeTableEntryIdPromise:
4429	4963	zig_unreachable();
4430	4964
4431	4965	}
...	...	@@ -5235,6 +5769,7 @@ static void define_builtin_types(CodeGen *g) {
5235	5769
5236	5770	g->builtin_types.entry_u8 = get_int_type(g, false, 8);
5237	5771	g->builtin_types.entry_u16 = get_int_type(g, false, 16);
	5772	g->builtin_types.entry_u29 = get_int_type(g, false, 29);
5238	5773	g->builtin_types.entry_u32 = get_int_type(g, false, 32);
5239	5774	g->builtin_types.entry_u64 = get_int_type(g, false, 64);
5240	5775	g->builtin_types.entry_u128 = get_int_type(g, false, 128);
...	...	@@ -5271,6 +5806,10 @@ static void define_builtin_types(CodeGen *g) {
5271	5806
5272	5807	g->primitive_type_table.put(&entry->name, entry);
5273	5808	}
	5809	{
	5810	TypeTableEntry *entry = get_promise_type(g, nullptr);
	5811	g->primitive_type_table.put(&entry->name, entry);
	5812	}
5274	5813
5275	5814	}
5276	5815
...	...	@@ -5348,6 +5887,7 @@ static void define_builtin_fns(CodeGen *g) {
5348	5887	create_builtin_fn(g, BuiltinFnIdArgType, "ArgType", 2);
5349	5888	create_builtin_fn(g, BuiltinFnIdExport, "export", 3);
5350	5889	create_builtin_fn(g, BuiltinFnIdErrorReturnTrace, "errorReturnTrace", 0);
	5890	create_builtin_fn(g, BuiltinFnIdAtomicRmw, "atomicRmw", 5);
5351	5891	}
5352	5892
5353	5893	static const char *bool_to_str(bool b) {
...	...	@@ -5477,6 +6017,20 @@ static void define_builtin_compile_vars(CodeGen *g) {
5477	6017	" SeqCst,\n"
5478	6018	"};\n\n");
5479	6019	}
	6020	{
	6021	buf_appendf(contents,
	6022	"pub const AtomicRmwOp = enum {\n"
	6023	" Xchg,\n"
	6024	" Add,\n"
	6025	" Sub,\n"
	6026	" And,\n"
	6027	" Nand,\n"
	6028	" Or,\n"
	6029	" Xor,\n"
	6030	" Max,\n"
	6031	" Min,\n"
	6032	"};\n\n");
	6033	}
5480	6034	{
5481	6035	buf_appendf(contents,
5482	6036	"pub const Mode = enum {\n"
...	...	@@ -5898,6 +6452,7 @@ static void prepend_c_type_to_decl_list(CodeGen g, GenH gen_h, TypeTableEntry
5898	6452	case TypeTableEntryIdArgTuple:
5899	6453	case TypeTableEntryIdErrorUnion:
5900	6454	case TypeTableEntryIdErrorSet:
	6455	case TypeTableEntryIdPromise:
5901	6456	zig_unreachable();
5902	6457	case TypeTableEntryIdVoid:
5903	6458	case TypeTableEntryIdUnreachable:
...	...	@@ -6027,9 +6582,7 @@ static void get_c_type(CodeGen g, GenH gen_h, TypeTableEntry *type_entry, Buf
6027	6582	if (child_type->zero_bits) {
6028	6583	buf_init_from_str(out_buf, "bool");
6029	6584	return;
6030		} else if (child_type->id == TypeTableEntryIdPointer \|\|
6031		child_type->id == TypeTableEntryIdFn)
6032		{
	6585	} else if (type_is_codegen_pointer(child_type)) {
6033	6586	return get_c_type(g, gen_h, child_type, out_buf);
6034	6587	} else {
6035	6588	zig_unreachable();
...	...	@@ -6084,6 +6637,7 @@ static void get_c_type(CodeGen g, GenH gen_h, TypeTableEntry *type_entry, Buf
6084	6637	case TypeTableEntryIdNullLit:
6085	6638	case TypeTableEntryIdVar:
6086	6639	case TypeTableEntryIdArgTuple:
	6640	case TypeTableEntryIdPromise:
6087	6641	zig_unreachable();
6088	6642	}
6089	6643	}
...	...	@@ -6244,6 +6798,7 @@ static void gen_h_file(CodeGen *g) {
6244	6798	case TypeTableEntryIdArgTuple:
6245	6799	case TypeTableEntryIdMaybe:
6246	6800	case TypeTableEntryIdFn:
	6801	case TypeTableEntryIdPromise:
6247	6802	zig_unreachable();
6248	6803	case TypeTableEntryIdEnum:
6249	6804	assert(type_entry->data.enumeration.layout == ContainerLayoutExtern);

src/ir.cpp+1320-83

...	...	@@ -65,6 +65,7 @@ enum ConstCastResultId {
65	65	ConstCastResultIdFnArgNoAlias,
66	66	ConstCastResultIdType,
67	67	ConstCastResultIdUnresolvedInferredErrSet,
	68	ConstCastResultIdAsyncAllocatorType,
68	69	};
69	70
70	71	struct ConstCastErrSetMismatch {
...	...	@@ -92,6 +93,7 @@ struct ConstCastOnly {
92	93	ConstCastOnly *error_union_payload;
93	94	ConstCastOnly *error_union_error_set;
94	95	ConstCastOnly *return_type;
	96	ConstCastOnly *async_allocator_type;
95	97	ConstCastArg fn_arg;
96	98	ConstCastArgNoAlias arg_no_alias;
97	99	} data;
...	...	@@ -104,6 +106,10 @@ static TypeTableEntry ir_analyze_instruction(IrAnalyze ira, IrInstruction *ins
104	106	static IrInstruction ir_implicit_cast(IrAnalyze ira, IrInstruction value, TypeTableEntry expected_type);
105	107	static IrInstruction ir_get_deref(IrAnalyze ira, IrInstruction source_instruction, IrInstruction ptr);
106	108	static ErrorMsg exec_add_error_node(CodeGen codegen, IrExecutable exec, AstNode source_node, Buf *msg);
	109	static IrInstruction ir_analyze_container_field_ptr(IrAnalyze ira, Buf *field_name,
	110	IrInstruction source_instr, IrInstruction container_ptr, TypeTableEntry *container_type);
	111	static IrInstruction ir_get_var_ptr(IrAnalyze ira, IrInstruction *instruction,
	112	VariableTableEntry *var, bool is_const_ptr, bool is_volatile_ptr);
107	113
108	114	ConstExprValue const_ptr_pointee(CodeGen g, ConstExprValue *const_val) {
109	115	assert(const_val->type->id == TypeTableEntryIdPointer);
...	...	@@ -637,6 +643,70 @@ static constexpr IrInstructionId ir_instruction_id(IrInstructionErrorUnion *) {
637	643	return IrInstructionIdErrorUnion;
638	644	}
639	645
	646	static constexpr IrInstructionId ir_instruction_id(IrInstructionCancel *) {
	647	return IrInstructionIdCancel;
	648	}
	649
	650	static constexpr IrInstructionId ir_instruction_id(IrInstructionGetImplicitAllocator *) {
	651	return IrInstructionIdGetImplicitAllocator;
	652	}
	653
	654	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroId *) {
	655	return IrInstructionIdCoroId;
	656	}
	657
	658	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroAlloc *) {
	659	return IrInstructionIdCoroAlloc;
	660	}
	661
	662	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroSize *) {
	663	return IrInstructionIdCoroSize;
	664	}
	665
	666	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroBegin *) {
	667	return IrInstructionIdCoroBegin;
	668	}
	669
	670	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroAllocFail *) {
	671	return IrInstructionIdCoroAllocFail;
	672	}
	673
	674	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroSuspend *) {
	675	return IrInstructionIdCoroSuspend;
	676	}
	677
	678	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroEnd *) {
	679	return IrInstructionIdCoroEnd;
	680	}
	681
	682	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroFree *) {
	683	return IrInstructionIdCoroFree;
	684	}
	685
	686	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroResume *) {
	687	return IrInstructionIdCoroResume;
	688	}
	689
	690	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroSave *) {
	691	return IrInstructionIdCoroSave;
	692	}
	693
	694	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroPromise *) {
	695	return IrInstructionIdCoroPromise;
	696	}
	697
	698	static constexpr IrInstructionId ir_instruction_id(IrInstructionCoroAllocHelper *) {
	699	return IrInstructionIdCoroAllocHelper;
	700	}
	701
	702	static constexpr IrInstructionId ir_instruction_id(IrInstructionAtomicRmw *) {
	703	return IrInstructionIdAtomicRmw;
	704	}
	705
	706	static constexpr IrInstructionId ir_instruction_id(IrInstructionPromiseResultType *) {
	707	return IrInstructionIdPromiseResultType;
	708	}
	709
640	710	template<typename T>
641	711	static T ir_create_instruction(IrBuilder irb, Scope scope, AstNode source_node) {
642	712	T *special_instruction = allocate<T>(1);
...	...	@@ -708,14 +778,6 @@ static IrInstruction ir_build_return(IrBuilder irb, Scope scope, AstNode sou
708	778	return &return_instruction->base;
709	779	}
710	780
711		static IrInstruction ir_build_return_from(IrBuilder irb, IrInstruction *old_instruction,
712		IrInstruction *return_value)
713		{
714		IrInstruction *new_instruction = ir_build_return(irb, old_instruction->scope, old_instruction->source_node, return_value);
715		ir_link_new_instruction(new_instruction, old_instruction);
716		return new_instruction;
717		}
718
719	781	static IrInstruction ir_create_const(IrBuilder irb, Scope scope, AstNode source_node,
720	782	TypeTableEntry *type_entry)
721	783	{
...	...	@@ -779,6 +841,14 @@ static IrInstruction ir_build_const_usize(IrBuilder irb, Scope *scope, AstNode
779	841	return &const_instruction->base;
780	842	}
781	843
	844	static IrInstruction ir_build_const_u8(IrBuilder irb, Scope scope, AstNode source_node, uint8_t value) {
	845	IrInstructionConst *const_instruction = ir_build_instruction<IrInstructionConst>(irb, scope, source_node);
	846	const_instruction->base.value.type = irb->codegen->builtin_types.entry_u8;
	847	const_instruction->base.value.special = ConstValSpecialStatic;
	848	bigint_init_unsigned(&const_instruction->base.value.data.x_bigint, value);
	849	return &const_instruction->base;
	850	}
	851
782	852	static IrInstruction ir_create_const_type(IrBuilder irb, Scope scope, AstNode source_node,
783	853	TypeTableEntry *type_entry)
784	854	{
...	...	@@ -866,6 +936,27 @@ static IrInstruction ir_build_const_c_str_lit(IrBuilder irb, Scope *scope, Ast
866	936	return &const_instruction->base;
867	937	}
868	938
	939	static IrInstruction ir_build_const_promise_init(IrBuilder irb, Scope scope, AstNode source_node,
	940	TypeTableEntry *return_type)
	941	{
	942	TypeTableEntry *struct_type = get_promise_frame_type(irb->codegen, return_type);
	943
	944	IrInstructionConst *const_instruction = ir_build_instruction<IrInstructionConst>(irb, scope, source_node);
	945	const_instruction->base.value.type = struct_type;
	946	const_instruction->base.value.special = ConstValSpecialStatic;
	947	const_instruction->base.value.data.x_struct.fields = allocate<ConstExprValue>(struct_type->data.structure.src_field_count);
	948	const_instruction->base.value.data.x_struct.fields[0].type = struct_type->data.structure.fields[0].type_entry;
	949	const_instruction->base.value.data.x_struct.fields[0].special = ConstValSpecialStatic;
	950	const_instruction->base.value.data.x_struct.fields[0].data.x_maybe = nullptr;
	951	if (struct_type->data.structure.src_field_count > 1) {
	952	const_instruction->base.value.data.x_struct.fields[1].type = return_type;
	953	const_instruction->base.value.data.x_struct.fields[1].special = ConstValSpecialUndef;
	954	const_instruction->base.value.data.x_struct.fields[2].type = struct_type->data.structure.fields[2].type_entry;
	955	const_instruction->base.value.data.x_struct.fields[2].special = ConstValSpecialUndef;
	956	}
	957	return &const_instruction->base;
	958	}
	959
869	960	static IrInstruction ir_build_bin_op(IrBuilder irb, Scope scope, AstNode source_node, IrBinOp op_id,
870	961	IrInstruction op1, IrInstruction op2, bool safety_check_on)
871	962	{
...	...	@@ -950,15 +1041,6 @@ static IrInstruction ir_build_struct_field_ptr(IrBuilder irb, Scope *scope, As
950	1041	return &instruction->base;
951	1042	}
952	1043
953		static IrInstruction ir_build_struct_field_ptr_from(IrBuilder irb, IrInstruction *old_instruction,
954		IrInstruction struct_ptr, TypeStructField type_struct_field)
955		{
956		IrInstruction *new_instruction = ir_build_struct_field_ptr(irb, old_instruction->scope,
957		old_instruction->source_node, struct_ptr, type_struct_field);
958		ir_link_new_instruction(new_instruction, old_instruction);
959		return new_instruction;
960		}
961
962	1044	static IrInstruction ir_build_union_field_ptr(IrBuilder irb, Scope scope, AstNode source_node,
963	1045	IrInstruction union_ptr, TypeUnionField field)
964	1046	{
...	...	@@ -982,7 +1064,7 @@ static IrInstruction ir_build_union_field_ptr_from(IrBuilder irb, IrInstructio
982	1064
983	1065	static IrInstruction ir_build_call(IrBuilder irb, Scope scope, AstNode source_node,
984	1066	FnTableEntry fn_entry, IrInstruction fn_ref, size_t arg_count, IrInstruction **args,
985		bool is_comptime, FnInline fn_inline)
	1067	bool is_comptime, FnInline fn_inline, bool is_async, IrInstruction *async_allocator)
986	1068	{
987	1069	IrInstructionCall *call_instruction = ir_build_instruction<IrInstructionCall>(irb, scope, source_node);
988	1070	call_instruction->fn_entry = fn_entry;
...	...	@@ -991,21 +1073,25 @@ static IrInstruction ir_build_call(IrBuilder irb, Scope scope, AstNode sourc
991	1073	call_instruction->fn_inline = fn_inline;
992	1074	call_instruction->args = args;
993	1075	call_instruction->arg_count = arg_count;
	1076	call_instruction->is_async = is_async;
	1077	call_instruction->async_allocator = async_allocator;
994	1078
995	1079	if (fn_ref)
996	1080	ir_ref_instruction(fn_ref, irb->current_basic_block);
997	1081	for (size_t i = 0; i < arg_count; i += 1)
998	1082	ir_ref_instruction(args[i], irb->current_basic_block);
	1083	if (async_allocator)
	1084	ir_ref_instruction(async_allocator, irb->current_basic_block);
999	1085
1000	1086	return &call_instruction->base;
1001	1087	}
1002	1088
1003	1089	static IrInstruction ir_build_call_from(IrBuilder irb, IrInstruction *old_instruction,
1004	1090	FnTableEntry fn_entry, IrInstruction fn_ref, size_t arg_count, IrInstruction **args,
1005		bool is_comptime, FnInline fn_inline)
	1091	bool is_comptime, FnInline fn_inline, bool is_async, IrInstruction *async_allocator)
1006	1092	{
1007	1093	IrInstruction *new_instruction = ir_build_call(irb, old_instruction->scope,
1008		old_instruction->source_node, fn_entry, fn_ref, arg_count, args, is_comptime, fn_inline);
	1094	old_instruction->source_node, fn_entry, fn_ref, arg_count, args, is_comptime, fn_inline, is_async, async_allocator);
1009	1095	ir_link_new_instruction(new_instruction, old_instruction);
1010	1096	return new_instruction;
1011	1097	}
...	...	@@ -2396,6 +2482,182 @@ static IrInstruction ir_build_error_union(IrBuilder irb, Scope *scope, AstNode
2396	2482	return &instruction->base;
2397	2483	}
2398	2484
	2485	static IrInstruction ir_build_cancel(IrBuilder irb, Scope scope, AstNode source_node,
	2486	IrInstruction *target)
	2487	{
	2488	IrInstructionCancel *instruction = ir_build_instruction<IrInstructionCancel>(irb, scope, source_node);
	2489	instruction->target = target;
	2490
	2491	ir_ref_instruction(target, irb->current_basic_block);
	2492
	2493	return &instruction->base;
	2494	}
	2495
	2496	static IrInstruction ir_build_get_implicit_allocator(IrBuilder irb, Scope scope, AstNode source_node,
	2497	ImplicitAllocatorId id)
	2498	{
	2499	IrInstructionGetImplicitAllocator *instruction = ir_build_instruction<IrInstructionGetImplicitAllocator>(irb, scope, source_node);
	2500	instruction->id = id;
	2501
	2502	return &instruction->base;
	2503	}
	2504
	2505	static IrInstruction ir_build_coro_id(IrBuilder irb, Scope scope, AstNode source_node, IrInstruction *promise_ptr) {
	2506	IrInstructionCoroId *instruction = ir_build_instruction<IrInstructionCoroId>(irb, scope, source_node);
	2507	instruction->promise_ptr = promise_ptr;
	2508
	2509	ir_ref_instruction(promise_ptr, irb->current_basic_block);
	2510
	2511	return &instruction->base;
	2512	}
	2513
	2514	static IrInstruction ir_build_coro_alloc(IrBuilder irb, Scope scope, AstNode source_node, IrInstruction *coro_id) {
	2515	IrInstructionCoroAlloc *instruction = ir_build_instruction<IrInstructionCoroAlloc>(irb, scope, source_node);
	2516	instruction->coro_id = coro_id;
	2517
	2518	ir_ref_instruction(coro_id, irb->current_basic_block);
	2519
	2520	return &instruction->base;
	2521	}
	2522
	2523	static IrInstruction ir_build_coro_size(IrBuilder irb, Scope scope, AstNode source_node) {
	2524	IrInstructionCoroSize *instruction = ir_build_instruction<IrInstructionCoroSize>(irb, scope, source_node);
	2525
	2526	return &instruction->base;
	2527	}
	2528
	2529	static IrInstruction ir_build_coro_begin(IrBuilder irb, Scope scope, AstNode source_node, IrInstruction coro_id, IrInstruction coro_mem_ptr) {
	2530	IrInstructionCoroBegin *instruction = ir_build_instruction<IrInstructionCoroBegin>(irb, scope, source_node);
	2531	instruction->coro_id = coro_id;
	2532	instruction->coro_mem_ptr = coro_mem_ptr;
	2533
	2534	ir_ref_instruction(coro_id, irb->current_basic_block);
	2535	ir_ref_instruction(coro_mem_ptr, irb->current_basic_block);
	2536
	2537	return &instruction->base;
	2538	}
	2539
	2540	static IrInstruction ir_build_coro_alloc_fail(IrBuilder irb, Scope scope, AstNode source_node, IrInstruction *err_val) {
	2541	IrInstructionCoroAllocFail *instruction = ir_build_instruction<IrInstructionCoroAllocFail>(irb, scope, source_node);
	2542	instruction->base.value.type = irb->codegen->builtin_types.entry_unreachable;
	2543	instruction->base.value.special = ConstValSpecialStatic;
	2544	instruction->err_val = err_val;
	2545
	2546	ir_ref_instruction(err_val, irb->current_basic_block);
	2547
	2548	return &instruction->base;
	2549	}
	2550
	2551	static IrInstruction ir_build_coro_suspend(IrBuilder irb, Scope scope, AstNode source_node,
	2552	IrInstruction save_point, IrInstruction is_final)
	2553	{
	2554	IrInstructionCoroSuspend *instruction = ir_build_instruction<IrInstructionCoroSuspend>(irb, scope, source_node);
	2555	instruction->save_point = save_point;
	2556	instruction->is_final = is_final;
	2557
	2558	if (save_point != nullptr) ir_ref_instruction(save_point, irb->current_basic_block);
	2559	ir_ref_instruction(is_final, irb->current_basic_block);
	2560
	2561	return &instruction->base;
	2562	}
	2563
	2564	static IrInstruction ir_build_coro_end(IrBuilder irb, Scope scope, AstNode source_node) {
	2565	IrInstructionCoroEnd *instruction = ir_build_instruction<IrInstructionCoroEnd>(irb, scope, source_node);
	2566	return &instruction->base;
	2567	}
	2568
	2569	static IrInstruction ir_build_coro_free(IrBuilder irb, Scope scope, AstNode source_node,
	2570	IrInstruction coro_id, IrInstruction coro_handle)
	2571	{
	2572	IrInstructionCoroFree *instruction = ir_build_instruction<IrInstructionCoroFree>(irb, scope, source_node);
	2573	instruction->coro_id = coro_id;
	2574	instruction->coro_handle = coro_handle;
	2575
	2576	ir_ref_instruction(coro_id, irb->current_basic_block);
	2577	ir_ref_instruction(coro_handle, irb->current_basic_block);
	2578
	2579	return &instruction->base;
	2580	}
	2581
	2582	static IrInstruction ir_build_coro_resume(IrBuilder irb, Scope scope, AstNode source_node,
	2583	IrInstruction *awaiter_handle)
	2584	{
	2585	IrInstructionCoroResume *instruction = ir_build_instruction<IrInstructionCoroResume>(irb, scope, source_node);
	2586	instruction->awaiter_handle = awaiter_handle;
	2587
	2588	ir_ref_instruction(awaiter_handle, irb->current_basic_block);
	2589
	2590	return &instruction->base;
	2591	}
	2592
	2593	static IrInstruction ir_build_coro_save(IrBuilder irb, Scope scope, AstNode source_node,
	2594	IrInstruction *coro_handle)
	2595	{
	2596	IrInstructionCoroSave *instruction = ir_build_instruction<IrInstructionCoroSave>(irb, scope, source_node);
	2597	instruction->coro_handle = coro_handle;
	2598
	2599	ir_ref_instruction(coro_handle, irb->current_basic_block);
	2600
	2601	return &instruction->base;
	2602	}
	2603
	2604	static IrInstruction ir_build_coro_promise(IrBuilder irb, Scope scope, AstNode source_node,
	2605	IrInstruction *coro_handle)
	2606	{
	2607	IrInstructionCoroPromise *instruction = ir_build_instruction<IrInstructionCoroPromise>(irb, scope, source_node);
	2608	instruction->coro_handle = coro_handle;
	2609
	2610	ir_ref_instruction(coro_handle, irb->current_basic_block);
	2611
	2612	return &instruction->base;
	2613	}
	2614
	2615	static IrInstruction ir_build_coro_alloc_helper(IrBuilder irb, Scope scope, AstNode source_node,
	2616	IrInstruction alloc_fn, IrInstruction coro_size)
	2617	{
	2618	IrInstructionCoroAllocHelper *instruction = ir_build_instruction<IrInstructionCoroAllocHelper>(irb, scope, source_node);
	2619	instruction->alloc_fn = alloc_fn;
	2620	instruction->coro_size = coro_size;
	2621
	2622	ir_ref_instruction(alloc_fn, irb->current_basic_block);
	2623	ir_ref_instruction(coro_size, irb->current_basic_block);
	2624
	2625	return &instruction->base;
	2626	}
	2627
	2628	static IrInstruction ir_build_atomic_rmw(IrBuilder irb, Scope scope, AstNode source_node,
	2629	IrInstruction operand_type, IrInstruction ptr, IrInstruction op, IrInstruction operand,
	2630	IrInstruction *ordering, AtomicRmwOp resolved_op, AtomicOrder resolved_ordering)
	2631	{
	2632	IrInstructionAtomicRmw *instruction = ir_build_instruction<IrInstructionAtomicRmw>(irb, scope, source_node);
	2633	instruction->operand_type = operand_type;
	2634	instruction->ptr = ptr;
	2635	instruction->op = op;
	2636	instruction->operand = operand;
	2637	instruction->ordering = ordering;
	2638	instruction->resolved_op = resolved_op;
	2639	instruction->resolved_ordering = resolved_ordering;
	2640
	2641	if (operand_type != nullptr) ir_ref_instruction(operand_type, irb->current_basic_block);
	2642	ir_ref_instruction(ptr, irb->current_basic_block);
	2643	if (op != nullptr) ir_ref_instruction(op, irb->current_basic_block);
	2644	ir_ref_instruction(operand, irb->current_basic_block);
	2645	if (ordering != nullptr) ir_ref_instruction(ordering, irb->current_basic_block);
	2646
	2647	return &instruction->base;
	2648	}
	2649
	2650	static IrInstruction ir_build_promise_result_type(IrBuilder irb, Scope scope, AstNode source_node,
	2651	IrInstruction *promise_type)
	2652	{
	2653	IrInstructionPromiseResultType *instruction = ir_build_instruction<IrInstructionPromiseResultType>(irb, scope, source_node);
	2654	instruction->promise_type = promise_type;
	2655
	2656	ir_ref_instruction(promise_type, irb->current_basic_block);
	2657
	2658	return &instruction->base;
	2659	}
	2660
2399	2661	static void ir_count_defers(IrBuilder irb, Scope inner_scope, Scope outer_scope, size_t results) {
2400	2662	results[ReturnKindUnconditional] = 0;
2401	2663	results[ReturnKindError] = 0;
...	...	@@ -2468,6 +2730,36 @@ static ScopeDeferExpr get_scope_defer_expr(Scope scope) {
2468	2730	return nullptr;
2469	2731	}
2470	2732
	2733	static IrInstruction ir_gen_async_return(IrBuilder irb, Scope scope, AstNode node, IrInstruction *return_value,
	2734	bool is_generated_code)
	2735	{
	2736	FnTableEntry *fn_entry = exec_fn_entry(irb->exec);
	2737	bool is_async = fn_entry != nullptr && fn_entry->type_entry->data.fn.fn_type_id.cc == CallingConventionAsync;
	2738	if (!is_async) {
	2739	IrInstruction *return_inst = ir_build_return(irb, scope, node, return_value);
	2740	return_inst->is_gen = is_generated_code;
	2741	return return_inst;
	2742	}
	2743
	2744	if (irb->exec->coro_result_ptr_field_ptr) {
	2745	IrInstruction *result_ptr = ir_build_load_ptr(irb, scope, node, irb->exec->coro_result_ptr_field_ptr);
	2746	ir_build_store_ptr(irb, scope, node, result_ptr, return_value);
	2747	}
	2748	IrInstruction *promise_type_val = ir_build_const_type(irb, scope, node,
	2749	get_maybe_type(irb->codegen, irb->codegen->builtin_types.entry_promise));
	2750	// TODO replace replacement_value with @intToPtr(?promise, 0x1) when it doesn't crash zig
	2751	IrInstruction *replacement_value = irb->exec->coro_handle;
	2752	IrInstruction *maybe_await_handle = ir_build_atomic_rmw(irb, scope, node,
	2753	promise_type_val, irb->exec->coro_awaiter_field_ptr, nullptr, replacement_value, nullptr,
	2754	AtomicRmwOp_xchg, AtomicOrderSeqCst);
	2755	ir_build_store_ptr(irb, scope, node, irb->exec->await_handle_var_ptr, maybe_await_handle);
	2756	IrInstruction *is_non_null = ir_build_test_nonnull(irb, scope, node, maybe_await_handle);
	2757	IrInstruction *is_comptime = ir_build_const_bool(irb, scope, node, false);
	2758	return ir_build_cond_br(irb, scope, node, is_non_null, irb->exec->coro_normal_final, irb->exec->coro_early_final,
	2759	is_comptime);
	2760	// the above blocks are rendered by ir_gen after the rest of codegen
	2761	}
	2762
2471	2763	static IrInstruction ir_gen_return(IrBuilder irb, Scope scope, AstNode node, LVal lval) {
2472	2764	assert(node->type == NodeTypeReturnExpr);
2473	2765
...	...	@@ -2517,18 +2809,22 @@ static IrInstruction ir_gen_return(IrBuilder irb, Scope scope, AstNode node,
2517	2809	}
2518	2810
2519	2811	ir_mark_gen(ir_build_cond_br(irb, scope, node, is_err, err_block, ok_block, is_comptime));
	2812	IrBasicBlock *ret_stmt_block = ir_create_basic_block(irb, scope, "RetStmt");
2520	2813
2521	2814	ir_set_cursor_at_end_and_append_block(irb, err_block);
2522	2815	ir_gen_defers_for_block(irb, scope, outer_scope, true);
2523		ir_build_return(irb, scope, node, return_value);
	2816	ir_build_br(irb, scope, node, ret_stmt_block, is_comptime);
2524	2817
2525	2818	ir_set_cursor_at_end_and_append_block(irb, ok_block);
2526	2819	ir_gen_defers_for_block(irb, scope, outer_scope, false);
2527		return ir_build_return(irb, scope, node, return_value);
	2820	ir_build_br(irb, scope, node, ret_stmt_block, is_comptime);
	2821
	2822	ir_set_cursor_at_end_and_append_block(irb, ret_stmt_block);
	2823	return ir_gen_async_return(irb, scope, node, return_value, false);
2528	2824	} else {
2529	2825	// generate unconditional defers
2530	2826	ir_gen_defers_for_block(irb, scope, outer_scope, false);
2531		return ir_build_return(irb, scope, node, return_value);
	2827	return ir_gen_async_return(irb, scope, node, return_value, false);
2532	2828	}
2533	2829	}
2534	2830	case ReturnKindError:
...	...	@@ -2548,7 +2844,7 @@ static IrInstruction ir_gen_return(IrBuilder irb, Scope scope, AstNode node,
2548	2844	ir_set_cursor_at_end_and_append_block(irb, return_block);
2549	2845	ir_gen_defers_for_block(irb, scope, outer_scope, true);
2550	2846	IrInstruction *err_val = ir_build_unwrap_err_code(irb, scope, node, err_union_ptr);
2551		ir_build_return(irb, scope, node, err_val);
	2847	ir_gen_async_return(irb, scope, node, err_val, false);
2552	2848
2553	2849	ir_set_cursor_at_end_and_append_block(irb, continue_block);
2554	2850	IrInstruction *unwrapped_ptr = ir_build_unwrap_err_payload(irb, scope, node, err_union_ptr, false);
...	...	@@ -3739,7 +4035,7 @@ static IrInstruction ir_gen_builtin_fn_call(IrBuilder irb, Scope *scope, AstNo
3739	4035	}
3740	4036	FnInline fn_inline = (builtin_fn->id == BuiltinFnIdInlineCall) ? FnInlineAlways : FnInlineNever;
3741	4037
3742		return ir_build_call(irb, scope, node, nullptr, fn_ref, arg_count, args, false, fn_inline);
	4038	return ir_build_call(irb, scope, node, nullptr, fn_ref, arg_count, args, false, fn_inline, false, nullptr);
3743	4039	}
3744	4040	case BuiltinFnIdTypeId:
3745	4041	{
...	...	@@ -3849,6 +4145,38 @@ static IrInstruction ir_gen_builtin_fn_call(IrBuilder irb, Scope *scope, AstNo
3849	4145	{
3850	4146	return ir_build_error_return_trace(irb, scope, node);
3851	4147	}
	4148	case BuiltinFnIdAtomicRmw:
	4149	{
	4150	AstNode *arg0_node = node->data.fn_call_expr.params.at(0);
	4151	IrInstruction *arg0_value = ir_gen_node(irb, arg0_node, scope);
	4152	if (arg0_value == irb->codegen->invalid_instruction)
	4153	return arg0_value;
	4154
	4155	AstNode *arg1_node = node->data.fn_call_expr.params.at(1);
	4156	IrInstruction *arg1_value = ir_gen_node(irb, arg1_node, scope);
	4157	if (arg1_value == irb->codegen->invalid_instruction)
	4158	return arg1_value;
	4159
	4160	AstNode *arg2_node = node->data.fn_call_expr.params.at(2);
	4161	IrInstruction *arg2_value = ir_gen_node(irb, arg2_node, scope);
	4162	if (arg2_value == irb->codegen->invalid_instruction)
	4163	return arg2_value;
	4164
	4165	AstNode *arg3_node = node->data.fn_call_expr.params.at(3);
	4166	IrInstruction *arg3_value = ir_gen_node(irb, arg3_node, scope);
	4167	if (arg3_value == irb->codegen->invalid_instruction)
	4168	return arg3_value;
	4169
	4170	AstNode *arg4_node = node->data.fn_call_expr.params.at(4);
	4171	IrInstruction *arg4_value = ir_gen_node(irb, arg4_node, scope);
	4172	if (arg4_value == irb->codegen->invalid_instruction)
	4173	return arg4_value;
	4174
	4175	return ir_build_atomic_rmw(irb, scope, node, arg0_value, arg1_value, arg2_value, arg3_value,
	4176	arg4_value,
	4177	// these 2 values don't mean anything since we passed non-null values for other args
	4178	AtomicRmwOp_xchg, AtomicOrderMonotonic);
	4179	}
3852	4180	}
3853	4181	zig_unreachable();
3854	4182	}
...	...	@@ -3873,7 +4201,17 @@ static IrInstruction ir_gen_fn_call(IrBuilder irb, Scope scope, AstNode node
3873	4201	return args[i];
3874	4202	}
3875	4203
3876		return ir_build_call(irb, scope, node, nullptr, fn_ref, arg_count, args, false, FnInlineAuto);
	4204	bool is_async = node->data.fn_call_expr.is_async;
	4205	IrInstruction *async_allocator = nullptr;
	4206	if (is_async) {
	4207	if (node->data.fn_call_expr.async_allocator) {
	4208	async_allocator = ir_gen_node(irb, node->data.fn_call_expr.async_allocator, scope);
	4209	if (async_allocator == irb->codegen->invalid_instruction)
	4210	return async_allocator;
	4211	}
	4212	}
	4213
	4214	return ir_build_call(irb, scope, node, nullptr, fn_ref, arg_count, args, false, FnInlineAuto, is_async, async_allocator);
3877	4215	}
3878	4216
3879	4217	static IrInstruction ir_gen_if_bool_expr(IrBuilder irb, Scope scope, AstNode node) {
...	...	@@ -5604,6 +5942,187 @@ static IrInstruction ir_gen_fn_proto(IrBuilder irb, Scope *parent_scope, AstNo
5604	5942	return ir_build_fn_proto(irb, parent_scope, node, param_types, align_value, return_type, is_var_args);
5605	5943	}
5606	5944
	5945	static IrInstruction ir_gen_cancel(IrBuilder irb, Scope parent_scope, AstNode node) {
	5946	assert(node->type == NodeTypeCancel);
	5947
	5948	IrInstruction *target_inst = ir_gen_node(irb, node->data.cancel_expr.expr, parent_scope);
	5949	if (target_inst == irb->codegen->invalid_instruction)
	5950	return irb->codegen->invalid_instruction;
	5951
	5952	return ir_build_cancel(irb, parent_scope, node, target_inst);
	5953	}
	5954
	5955	static IrInstruction ir_gen_resume(IrBuilder irb, Scope parent_scope, AstNode node) {
	5956	assert(node->type == NodeTypeResume);
	5957
	5958	IrInstruction *target_inst = ir_gen_node(irb, node->data.resume_expr.expr, parent_scope);
	5959	if (target_inst == irb->codegen->invalid_instruction)
	5960	return irb->codegen->invalid_instruction;
	5961
	5962	return ir_build_coro_resume(irb, parent_scope, node, target_inst);
	5963	}
	5964
	5965	static IrInstruction ir_gen_await_expr(IrBuilder irb, Scope parent_scope, AstNode node) {
	5966	assert(node->type == NodeTypeAwaitExpr);
	5967
	5968	IrInstruction *target_inst = ir_gen_node(irb, node->data.await_expr.expr, parent_scope);
	5969	if (target_inst == irb->codegen->invalid_instruction)
	5970	return irb->codegen->invalid_instruction;
	5971
	5972	FnTableEntry *fn_entry = exec_fn_entry(irb->exec);
	5973	if (!fn_entry) {
	5974	add_node_error(irb->codegen, node, buf_sprintf("await outside function definition"));
	5975	return irb->codegen->invalid_instruction;
	5976	}
	5977	if (fn_entry->type_entry->data.fn.fn_type_id.cc != CallingConventionAsync) {
	5978	add_node_error(irb->codegen, node, buf_sprintf("await in non-async function"));
	5979	return irb->codegen->invalid_instruction;
	5980	}
	5981
	5982	ScopeDeferExpr *scope_defer_expr = get_scope_defer_expr(parent_scope);
	5983	if (scope_defer_expr) {
	5984	if (!scope_defer_expr->reported_err) {
	5985	add_node_error(irb->codegen, node, buf_sprintf("cannot await inside defer expression"));
	5986	scope_defer_expr->reported_err = true;
	5987	}
	5988	return irb->codegen->invalid_instruction;
	5989	}
	5990
	5991	Scope *outer_scope = irb->exec->begin_scope;
	5992
	5993	IrInstruction *coro_promise_ptr = ir_build_coro_promise(irb, parent_scope, node, target_inst);
	5994	Buf *result_ptr_field_name = buf_create_from_str(RESULT_PTR_FIELD_NAME);
	5995	IrInstruction *result_ptr_field_ptr = ir_build_field_ptr(irb, parent_scope, node, coro_promise_ptr, result_ptr_field_name);
	5996
	5997	Buf *awaiter_handle_field_name = buf_create_from_str(AWAITER_HANDLE_FIELD_NAME);
	5998	IrInstruction *awaiter_field_ptr = ir_build_field_ptr(irb, parent_scope, node, coro_promise_ptr,
	5999	awaiter_handle_field_name);
	6000
	6001	IrInstruction *const_bool_false = ir_build_const_bool(irb, parent_scope, node, false);
	6002	VariableTableEntry *result_var = ir_create_var(irb, node, parent_scope, nullptr,
	6003	false, false, true, const_bool_false);
	6004	IrInstruction *undefined_value = ir_build_const_undefined(irb, parent_scope, node);
	6005	IrInstruction *target_promise_type = ir_build_typeof(irb, parent_scope, node, target_inst);
	6006	IrInstruction *promise_result_type = ir_build_promise_result_type(irb, parent_scope, node, target_promise_type);
	6007	ir_build_var_decl(irb, parent_scope, node, result_var, promise_result_type, nullptr, undefined_value);
	6008	IrInstruction *my_result_var_ptr = ir_build_var_ptr(irb, parent_scope, node, result_var, false, false);
	6009	ir_build_store_ptr(irb, parent_scope, node, result_ptr_field_ptr, my_result_var_ptr);
	6010	IrInstruction *save_token = ir_build_coro_save(irb, parent_scope, node, irb->exec->coro_handle);
	6011	IrInstruction *promise_type_val = ir_build_const_type(irb, parent_scope, node,
	6012	get_maybe_type(irb->codegen, irb->codegen->builtin_types.entry_promise));
	6013	IrInstruction *maybe_await_handle = ir_build_atomic_rmw(irb, parent_scope, node,
	6014	promise_type_val, awaiter_field_ptr, nullptr, irb->exec->coro_handle, nullptr,
	6015	AtomicRmwOp_xchg, AtomicOrderSeqCst);
	6016	IrInstruction *is_non_null = ir_build_test_nonnull(irb, parent_scope, node, maybe_await_handle);
	6017	IrBasicBlock *yes_suspend_block = ir_create_basic_block(irb, parent_scope, "YesSuspend");
	6018	IrBasicBlock *no_suspend_block = ir_create_basic_block(irb, parent_scope, "NoSuspend");
	6019	IrBasicBlock *merge_block = ir_create_basic_block(irb, parent_scope, "Merge");
	6020	ir_build_cond_br(irb, parent_scope, node, is_non_null, no_suspend_block, yes_suspend_block, const_bool_false);
	6021
	6022	ir_set_cursor_at_end_and_append_block(irb, no_suspend_block);
	6023	Buf *result_field_name = buf_create_from_str(RESULT_FIELD_NAME);
	6024	IrInstruction *promise_result_ptr = ir_build_field_ptr(irb, parent_scope, node, coro_promise_ptr, result_field_name);
	6025	IrInstruction *no_suspend_result = ir_build_load_ptr(irb, parent_scope, node, promise_result_ptr);
	6026	ir_build_cancel(irb, parent_scope, node, target_inst);
	6027	ir_build_br(irb, parent_scope, node, merge_block, const_bool_false);
	6028
	6029	ir_set_cursor_at_end_and_append_block(irb, yes_suspend_block);
	6030	IrInstruction *suspend_code = ir_build_coro_suspend(irb, parent_scope, node, save_token, const_bool_false);
	6031	IrBasicBlock *cleanup_block = ir_create_basic_block(irb, parent_scope, "SuspendCleanup");
	6032	IrBasicBlock *resume_block = ir_create_basic_block(irb, parent_scope, "SuspendResume");
	6033
	6034	IrInstructionSwitchBrCase *cases = allocate<IrInstructionSwitchBrCase>(2);
	6035	cases[0].value = ir_build_const_u8(irb, parent_scope, node, 0);
	6036	cases[0].block = resume_block;
	6037	cases[1].value = ir_build_const_u8(irb, parent_scope, node, 1);
	6038	cases[1].block = cleanup_block;
	6039	ir_build_switch_br(irb, parent_scope, node, suspend_code, irb->exec->coro_suspend_block,
	6040	2, cases, const_bool_false);
	6041
	6042	ir_set_cursor_at_end_and_append_block(irb, cleanup_block);
	6043	ir_gen_defers_for_block(irb, parent_scope, outer_scope, true);
	6044	ir_build_br(irb, parent_scope, node, irb->exec->coro_final_cleanup_block, const_bool_false);
	6045
	6046	ir_set_cursor_at_end_and_append_block(irb, resume_block);
	6047	IrInstruction *yes_suspend_result = ir_build_load_ptr(irb, parent_scope, node, my_result_var_ptr);
	6048	ir_build_br(irb, parent_scope, node, merge_block, const_bool_false);
	6049
	6050	ir_set_cursor_at_end_and_append_block(irb, merge_block);
	6051	IrBasicBlock *incoming_blocks = allocate<IrBasicBlock >(2);
	6052	IrInstruction *incoming_values = allocate<IrInstruction >(2);
	6053	incoming_blocks[0] = resume_block;
	6054	incoming_values[0] = yes_suspend_result;
	6055	incoming_blocks[1] = no_suspend_block;
	6056	incoming_values[1] = no_suspend_result;
	6057	return ir_build_phi(irb, parent_scope, node, 2, incoming_blocks, incoming_values);
	6058	}
	6059
	6060	static IrInstruction ir_gen_suspend(IrBuilder irb, Scope parent_scope, AstNode node) {
	6061	assert(node->type == NodeTypeSuspend);
	6062
	6063	FnTableEntry *fn_entry = exec_fn_entry(irb->exec);
	6064	if (!fn_entry) {
	6065	add_node_error(irb->codegen, node, buf_sprintf("suspend outside function definition"));
	6066	return irb->codegen->invalid_instruction;
	6067	}
	6068	if (fn_entry->type_entry->data.fn.fn_type_id.cc != CallingConventionAsync) {
	6069	add_node_error(irb->codegen, node, buf_sprintf("suspend in non-async function"));
	6070	return irb->codegen->invalid_instruction;
	6071	}
	6072
	6073	ScopeDeferExpr *scope_defer_expr = get_scope_defer_expr(parent_scope);
	6074	if (scope_defer_expr) {
	6075	if (!scope_defer_expr->reported_err) {
	6076	add_node_error(irb->codegen, node, buf_sprintf("cannot suspend inside defer expression"));
	6077	scope_defer_expr->reported_err = true;
	6078	}
	6079	return irb->codegen->invalid_instruction;
	6080	}
	6081
	6082	Scope *outer_scope = irb->exec->begin_scope;
	6083
	6084
	6085	IrInstruction *suspend_code;
	6086	IrInstruction *const_bool_false = ir_build_const_bool(irb, parent_scope, node, false);
	6087	if (node->data.suspend.block == nullptr) {
	6088	suspend_code = ir_build_coro_suspend(irb, parent_scope, node, nullptr, const_bool_false);
	6089	} else {
	6090	assert(node->data.suspend.promise_symbol != nullptr);
	6091	assert(node->data.suspend.promise_symbol->type == NodeTypeSymbol);
	6092	Buf *promise_symbol_name = node->data.suspend.promise_symbol->data.symbol_expr.symbol;
	6093	Scope *child_scope;
	6094	if (!buf_eql_str(promise_symbol_name, "_")) {
	6095	VariableTableEntry *promise_var = ir_create_var(irb, node, parent_scope, promise_symbol_name,
	6096	true, true, false, const_bool_false);
	6097	ir_build_var_decl(irb, parent_scope, node, promise_var, nullptr, nullptr, irb->exec->coro_handle);
	6098	child_scope = promise_var->child_scope;
	6099	} else {
	6100	child_scope = parent_scope;
	6101	}
	6102	IrInstruction *save_token = ir_build_coro_save(irb, child_scope, node, irb->exec->coro_handle);
	6103	ir_gen_node(irb, node->data.suspend.block, child_scope);
	6104	suspend_code = ir_build_coro_suspend(irb, parent_scope, node, save_token, const_bool_false);
	6105	}
	6106
	6107	IrBasicBlock *cleanup_block = ir_create_basic_block(irb, parent_scope, "SuspendCleanup");
	6108	IrBasicBlock *resume_block = ir_create_basic_block(irb, parent_scope, "SuspendResume");
	6109
	6110	IrInstructionSwitchBrCase *cases = allocate<IrInstructionSwitchBrCase>(2);
	6111	cases[0].value = ir_build_const_u8(irb, parent_scope, node, 0);
	6112	cases[0].block = resume_block;
	6113	cases[1].value = ir_build_const_u8(irb, parent_scope, node, 1);
	6114	cases[1].block = cleanup_block;
	6115	ir_build_switch_br(irb, parent_scope, node, suspend_code, irb->exec->coro_suspend_block,
	6116	2, cases, const_bool_false);
	6117
	6118	ir_set_cursor_at_end_and_append_block(irb, cleanup_block);
	6119	ir_gen_defers_for_block(irb, parent_scope, outer_scope, true);
	6120	ir_build_br(irb, parent_scope, node, irb->exec->coro_final_cleanup_block, const_bool_false);
	6121
	6122	ir_set_cursor_at_end_and_append_block(irb, resume_block);
	6123	return ir_build_const_void(irb, parent_scope, node);
	6124	}
	6125
5607	6126	static IrInstruction ir_gen_node_raw(IrBuilder irb, AstNode node, Scope scope,
5608	6127	LVal lval)
5609	6128	{
...	...	@@ -5700,6 +6219,14 @@ static IrInstruction ir_gen_node_raw(IrBuilder irb, AstNode node, Scope scop
5700	6219	return ir_lval_wrap(irb, scope, ir_gen_fn_proto(irb, scope, node), lval);
5701	6220	case NodeTypeErrorSetDecl:
5702	6221	return ir_lval_wrap(irb, scope, ir_gen_err_set_decl(irb, scope, node), lval);
	6222	case NodeTypeCancel:
	6223	return ir_lval_wrap(irb, scope, ir_gen_cancel(irb, scope, node), lval);
	6224	case NodeTypeResume:
	6225	return ir_lval_wrap(irb, scope, ir_gen_resume(irb, scope, node), lval);
	6226	case NodeTypeAwaitExpr:
	6227	return ir_lval_wrap(irb, scope, ir_gen_await_expr(irb, scope, node), lval);
	6228	case NodeTypeSuspend:
	6229	return ir_lval_wrap(irb, scope, ir_gen_suspend(irb, scope, node), lval);
5703	6230	}
5704	6231	zig_unreachable();
5705	6232	}
...	...	@@ -5728,6 +6255,7 @@ static void invalidate_exec(IrExecutable *exec) {
5728	6255	invalidate_exec(exec->source_exec);
5729	6256	}
5730	6257
	6258
5731	6259	bool ir_gen(CodeGen codegen, AstNode node, Scope scope, IrExecutable ir_executable) {
5732	6260	assert(node->owner);
5733	6261
...	...	@@ -5742,13 +6270,162 @@ bool ir_gen(CodeGen codegen, AstNode node, Scope scope, IrExecutable ir_exec
5742	6270	// Entry block gets a reference because we enter it to begin.
5743	6271	ir_ref_bb(irb->current_basic_block);
5744	6272
	6273	FnTableEntry *fn_entry = exec_fn_entry(irb->exec);
	6274	bool is_async = fn_entry != nullptr && fn_entry->type_entry->data.fn.fn_type_id.cc == CallingConventionAsync;
	6275	IrInstruction *coro_id;
	6276	IrInstruction *u8_ptr_type;
	6277	IrInstruction *const_bool_false;
	6278	IrInstruction *coro_result_field_ptr;
	6279	TypeTableEntry *return_type;
	6280	Buf *result_ptr_field_name;
	6281	VariableTableEntry *coro_size_var;
	6282	if (is_async) {
	6283	// create the coro promise
	6284	const_bool_false = ir_build_const_bool(irb, scope, node, false);
	6285	VariableTableEntry *promise_var = ir_create_var(irb, node, scope, nullptr, false, false, true, const_bool_false);
	6286
	6287	return_type = fn_entry->type_entry->data.fn.fn_type_id.return_type;
	6288	IrInstruction *promise_init = ir_build_const_promise_init(irb, scope, node, return_type);
	6289	ir_build_var_decl(irb, scope, node, promise_var, nullptr, nullptr, promise_init);
	6290	IrInstruction *coro_promise_ptr = ir_build_var_ptr(irb, scope, node, promise_var, false, false);
	6291
	6292	VariableTableEntry *await_handle_var = ir_create_var(irb, node, scope, nullptr, false, false, true, const_bool_false);
	6293	IrInstruction *null_value = ir_build_const_null(irb, scope, node);
	6294	IrInstruction *await_handle_type_val = ir_build_const_type(irb, scope, node,
	6295	get_maybe_type(irb->codegen, irb->codegen->builtin_types.entry_promise));
	6296	ir_build_var_decl(irb, scope, node, await_handle_var, await_handle_type_val, nullptr, null_value);
	6297	irb->exec->await_handle_var_ptr = ir_build_var_ptr(irb, scope, node,
	6298	await_handle_var, false, false);
	6299
	6300	u8_ptr_type = ir_build_const_type(irb, scope, node,
	6301	get_pointer_to_type(irb->codegen, irb->codegen->builtin_types.entry_u8, false));
	6302	IrInstruction *promise_as_u8_ptr = ir_build_ptr_cast(irb, scope, node, u8_ptr_type, coro_promise_ptr);
	6303	coro_id = ir_build_coro_id(irb, scope, node, promise_as_u8_ptr);
	6304	coro_size_var = ir_create_var(irb, node, scope, nullptr, false, false, true, const_bool_false);
	6305	IrInstruction *coro_size = ir_build_coro_size(irb, scope, node);
	6306	ir_build_var_decl(irb, scope, node, coro_size_var, nullptr, nullptr, coro_size);
	6307	IrInstruction *implicit_allocator_ptr = ir_build_get_implicit_allocator(irb, scope, node,
	6308	ImplicitAllocatorIdArg);
	6309	irb->exec->coro_allocator_var = ir_create_var(irb, node, scope, nullptr, true, true, true, const_bool_false);
	6310	ir_build_var_decl(irb, scope, node, irb->exec->coro_allocator_var, nullptr, nullptr, implicit_allocator_ptr);
	6311	Buf *alloc_field_name = buf_create_from_str(ASYNC_ALLOC_FIELD_NAME);
	6312	IrInstruction *alloc_fn_ptr = ir_build_field_ptr(irb, scope, node, implicit_allocator_ptr, alloc_field_name);
	6313	IrInstruction *alloc_fn = ir_build_load_ptr(irb, scope, node, alloc_fn_ptr);
	6314	IrInstruction *maybe_coro_mem_ptr = ir_build_coro_alloc_helper(irb, scope, node, alloc_fn, coro_size);
	6315	IrInstruction *alloc_result_is_ok = ir_build_test_nonnull(irb, scope, node, maybe_coro_mem_ptr);
	6316	IrBasicBlock *alloc_err_block = ir_create_basic_block(irb, scope, "AllocError");
	6317	IrBasicBlock *alloc_ok_block = ir_create_basic_block(irb, scope, "AllocOk");
	6318	ir_build_cond_br(irb, scope, node, alloc_result_is_ok, alloc_ok_block, alloc_err_block, const_bool_false);
	6319
	6320	ir_set_cursor_at_end_and_append_block(irb, alloc_err_block);
	6321	IrInstruction *undef = ir_build_const_undefined(irb, scope, node);
	6322	ir_build_return(irb, scope, node, undef);
	6323
	6324	ir_set_cursor_at_end_and_append_block(irb, alloc_ok_block);
	6325	IrInstruction *coro_mem_ptr = ir_build_ptr_cast(irb, scope, node, u8_ptr_type, maybe_coro_mem_ptr);
	6326	irb->exec->coro_handle = ir_build_coro_begin(irb, scope, node, coro_id, coro_mem_ptr);
	6327
	6328	Buf *awaiter_handle_field_name = buf_create_from_str(AWAITER_HANDLE_FIELD_NAME);
	6329	irb->exec->coro_awaiter_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
	6330	awaiter_handle_field_name);
	6331	if (type_has_bits(return_type)) {
	6332	Buf *result_field_name = buf_create_from_str(RESULT_FIELD_NAME);
	6333	coro_result_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr, result_field_name);
	6334	result_ptr_field_name = buf_create_from_str(RESULT_PTR_FIELD_NAME);
	6335	irb->exec->coro_result_ptr_field_ptr = ir_build_field_ptr(irb, scope, node, coro_promise_ptr,
	6336	result_ptr_field_name);
	6337	ir_build_store_ptr(irb, scope, node, irb->exec->coro_result_ptr_field_ptr, coro_result_field_ptr);
	6338	}
	6339
	6340
	6341	irb->exec->coro_early_final = ir_create_basic_block(irb, scope, "CoroEarlyFinal");
	6342	irb->exec->coro_normal_final = ir_create_basic_block(irb, scope, "CoroNormalFinal");
	6343	irb->exec->coro_suspend_block = ir_create_basic_block(irb, scope, "Suspend");
	6344	irb->exec->coro_final_cleanup_block = ir_create_basic_block(irb, scope, "FinalCleanup");
	6345	}
	6346
5745	6347	IrInstruction *result = ir_gen_node_extra(irb, node, scope, LVAL_NONE);
5746	6348	assert(result);
5747	6349	if (irb->exec->invalid)
5748	6350	return false;
5749	6351
5750	6352	if (!instr_is_unreachable(result)) {
5751		ir_mark_gen(ir_build_return(irb, scope, result->source_node, result));
	6353	ir_gen_async_return(irb, scope, result->source_node, result, true);
	6354	}
	6355
	6356	if (is_async) {
	6357	IrBasicBlock *invalid_resume_block = ir_create_basic_block(irb, scope, "InvalidResume");
	6358	IrBasicBlock *check_free_block = ir_create_basic_block(irb, scope, "CheckFree");
	6359
	6360	ir_set_cursor_at_end_and_append_block(irb, irb->exec->coro_early_final);
	6361	IrInstruction *const_bool_true = ir_build_const_bool(irb, scope, node, true);
	6362	IrInstruction *suspend_code = ir_build_coro_suspend(irb, scope, node, nullptr, const_bool_true);
	6363	IrInstructionSwitchBrCase *cases = allocate<IrInstructionSwitchBrCase>(2);
	6364	cases[0].value = ir_build_const_u8(irb, scope, node, 0);
	6365	cases[0].block = invalid_resume_block;
	6366	cases[1].value = ir_build_const_u8(irb, scope, node, 1);
	6367	cases[1].block = irb->exec->coro_final_cleanup_block;
	6368	ir_build_switch_br(irb, scope, node, suspend_code, irb->exec->coro_suspend_block, 2, cases, const_bool_false);
	6369
	6370	ir_set_cursor_at_end_and_append_block(irb, irb->exec->coro_suspend_block);
	6371	ir_build_coro_end(irb, scope, node);
	6372	ir_build_return(irb, scope, node, irb->exec->coro_handle);
	6373
	6374	ir_set_cursor_at_end_and_append_block(irb, invalid_resume_block);
	6375	ir_build_unreachable(irb, scope, node);
	6376
	6377	ir_set_cursor_at_end_and_append_block(irb, irb->exec->coro_normal_final);
	6378	ir_build_br(irb, scope, node, check_free_block, const_bool_false);
	6379
	6380	ir_set_cursor_at_end_and_append_block(irb, irb->exec->coro_final_cleanup_block);
	6381	if (type_has_bits(return_type)) {
	6382	IrInstruction *result_ptr = ir_build_load_ptr(irb, scope, node, irb->exec->coro_result_ptr_field_ptr);
	6383	IrInstruction *result_ptr_as_u8_ptr = ir_build_ptr_cast(irb, scope, node, u8_ptr_type, result_ptr);
	6384	IrInstruction *return_value_ptr_as_u8_ptr = ir_build_ptr_cast(irb, scope, node, u8_ptr_type,
	6385	coro_result_field_ptr);
	6386	IrInstruction *return_type_inst = ir_build_const_type(irb, scope, node,
	6387	fn_entry->type_entry->data.fn.fn_type_id.return_type);
	6388	IrInstruction *size_of_ret_val = ir_build_size_of(irb, scope, node, return_type_inst);
	6389	ir_build_memcpy(irb, scope, node, result_ptr_as_u8_ptr, return_value_ptr_as_u8_ptr, size_of_ret_val);
	6390	}
	6391	ir_build_br(irb, scope, node, check_free_block, const_bool_false);
	6392
	6393	ir_set_cursor_at_end_and_append_block(irb, check_free_block);
	6394	IrBasicBlock *incoming_blocks = allocate<IrBasicBlock >(2);
	6395	IrInstruction *incoming_values = allocate<IrInstruction >(2);
	6396	incoming_blocks[0] = irb->exec->coro_final_cleanup_block;
	6397	incoming_values[0] = const_bool_false;
	6398	incoming_blocks[1] = irb->exec->coro_normal_final;
	6399	incoming_values[1] = const_bool_true;
	6400	IrInstruction *resume_awaiter = ir_build_phi(irb, scope, node, 2, incoming_blocks, incoming_values);
	6401
	6402	Buf *free_field_name = buf_create_from_str(ASYNC_FREE_FIELD_NAME);
	6403	IrInstruction *implicit_allocator_ptr = ir_build_get_implicit_allocator(irb, scope, node,
	6404	ImplicitAllocatorIdLocalVar);
	6405	IrInstruction *free_fn_ptr = ir_build_field_ptr(irb, scope, node, implicit_allocator_ptr, free_field_name);
	6406	IrInstruction *free_fn = ir_build_load_ptr(irb, scope, node, free_fn_ptr);
	6407	IrInstruction *zero = ir_build_const_usize(irb, scope, node, 0);
	6408	IrInstruction *coro_mem_ptr_maybe = ir_build_coro_free(irb, scope, node, coro_id, irb->exec->coro_handle);
	6409	IrInstruction *coro_mem_ptr = ir_build_ptr_cast(irb, scope, node, u8_ptr_type, coro_mem_ptr_maybe);
	6410	IrInstruction *coro_mem_ptr_ref = ir_build_ref(irb, scope, node, coro_mem_ptr, true, false);
	6411	IrInstruction *coro_size_ptr = ir_build_var_ptr(irb, scope, node, coro_size_var, true, false);
	6412	IrInstruction *coro_size = ir_build_load_ptr(irb, scope, node, coro_size_ptr);
	6413	IrInstruction *mem_slice = ir_build_slice(irb, scope, node, coro_mem_ptr_ref, zero, coro_size, false);
	6414	size_t arg_count = 2;
	6415	IrInstruction *args = allocate<IrInstruction >(arg_count);
	6416	args[0] = implicit_allocator_ptr; // self
	6417	args[1] = mem_slice; // old_mem
	6418	ir_build_call(irb, scope, node, nullptr, free_fn, arg_count, args, false, FnInlineAuto, false, nullptr);
	6419
	6420	IrBasicBlock *resume_block = ir_create_basic_block(irb, scope, "Resume");
	6421	ir_build_cond_br(irb, scope, node, resume_awaiter, resume_block, irb->exec->coro_suspend_block, const_bool_false);
	6422
	6423	ir_set_cursor_at_end_and_append_block(irb, resume_block);
	6424	IrInstruction *unwrapped_await_handle_ptr = ir_build_unwrap_maybe(irb, scope, node,
	6425	irb->exec->await_handle_var_ptr, false);
	6426	IrInstruction *awaiter_handle = ir_build_load_ptr(irb, scope, node, unwrapped_await_handle_ptr);
	6427	ir_build_coro_resume(irb, scope, node, awaiter_handle);
	6428	ir_build_br(irb, scope, node, irb->exec->coro_suspend_block, const_bool_false);
5752	6429	}
5753	6430
5754	6431	return true;
...	...	@@ -6705,6 +7382,12 @@ static ConstCastOnly types_match_const_cast_only(IrAnalyze *ira, TypeTableEntry
6705	7382	return result;
6706	7383	}
6707	7384
	7385	if (expected_type == ira->codegen->builtin_types.entry_promise &&
	7386	actual_type->id == TypeTableEntryIdPromise)
	7387	{
	7388	return result;
	7389	}
	7390
6708	7391	// fn
6709	7392	if (expected_type->id == TypeTableEntryIdFn &&
6710	7393	actual_type->id == TypeTableEntryIdFn)
...	...	@@ -6736,6 +7419,16 @@ static ConstCastOnly types_match_const_cast_only(IrAnalyze *ira, TypeTableEntry
6736	7419	return result;
6737	7420	}
6738	7421	}
	7422	if (!expected_type->data.fn.is_generic && expected_type->data.fn.fn_type_id.cc == CallingConventionAsync) {
	7423	ConstCastOnly child = types_match_const_cast_only(ira, actual_type->data.fn.fn_type_id.async_allocator_type,
	7424	expected_type->data.fn.fn_type_id.async_allocator_type, source_node);
	7425	if (child.id != ConstCastResultIdOk) {
	7426	result.id = ConstCastResultIdAsyncAllocatorType;
	7427	result.data.async_allocator_type = allocate_nonzero<ConstCastOnly>(1);
	7428	*result.data.async_allocator_type = child;
	7429	return result;
	7430	}
	7431	}
6739	7432	if (expected_type->data.fn.fn_type_id.param_count != actual_type->data.fn.fn_type_id.param_count) {
6740	7433	result.id = ConstCastResultIdFnArgCount;
6741	7434	return result;
...	...	@@ -9224,15 +9917,35 @@ static bool ir_resolve_comptime(IrAnalyze ira, IrInstruction value, bool *out)
9224	9917	return ir_resolve_bool(ira, value, out);
9225	9918	}
9226	9919
9227		static bool ir_resolve_atomic_order(IrAnalyze ira, IrInstruction value, AtomicOrder *out) {
	9920	static bool ir_resolve_atomic_order(IrAnalyze ira, IrInstruction value, AtomicOrder *out) {
	9921	if (type_is_invalid(value->value.type))
	9922	return false;
	9923
	9924	ConstExprValue *atomic_order_val = get_builtin_value(ira->codegen, "AtomicOrder");
	9925	assert(atomic_order_val->type->id == TypeTableEntryIdMetaType);
	9926	TypeTableEntry *atomic_order_type = atomic_order_val->data.x_type;
	9927
	9928	IrInstruction *casted_value = ir_implicit_cast(ira, value, atomic_order_type);
	9929	if (type_is_invalid(casted_value->value.type))
	9930	return false;
	9931
	9932	ConstExprValue *const_val = ir_resolve_const(ira, casted_value, UndefBad);
	9933	if (!const_val)
	9934	return false;
	9935
	9936	*out = (AtomicOrder)bigint_as_unsigned(&const_val->data.x_enum_tag);
	9937	return true;
	9938	}
	9939
	9940	static bool ir_resolve_atomic_rmw_op(IrAnalyze ira, IrInstruction value, AtomicRmwOp *out) {
9228	9941	if (type_is_invalid(value->value.type))
9229	9942	return false;
9230	9943
9231		ConstExprValue *atomic_order_val = get_builtin_value(ira->codegen, "AtomicOrder");
9232		assert(atomic_order_val->type->id == TypeTableEntryIdMetaType);
9233		TypeTableEntry *atomic_order_type = atomic_order_val->data.x_type;
	9944	ConstExprValue *atomic_rmw_op_val = get_builtin_value(ira->codegen, "AtomicRmwOp");
	9945	assert(atomic_rmw_op_val->type->id == TypeTableEntryIdMetaType);
	9946	TypeTableEntry *atomic_rmw_op_type = atomic_rmw_op_val->data.x_type;
9234	9947
9235		IrInstruction *casted_value = ir_implicit_cast(ira, value, atomic_order_type);
	9948	IrInstruction *casted_value = ir_implicit_cast(ira, value, atomic_rmw_op_type);
9236	9949	if (type_is_invalid(casted_value->value.type))
9237	9950	return false;
9238	9951
...	...	@@ -9240,7 +9953,7 @@ static bool ir_resolve_atomic_order(IrAnalyze ira, IrInstruction value, Atomic
9240	9953	if (!const_val)
9241	9954	return false;
9242	9955
9243		*out = (AtomicOrder)bigint_as_unsigned(&const_val->data.x_enum_tag);
	9956	*out = (AtomicRmwOp)bigint_as_unsigned(&const_val->data.x_enum_tag);
9244	9957	return true;
9245	9958	}
9246	9959
...	...	@@ -9342,8 +10055,11 @@ static TypeTableEntry ir_analyze_instruction_return(IrAnalyze ira,
9342	10055	ir_add_error(ira, casted_value, buf_sprintf("function returns address of local variable"));
9343	10056	return ir_unreach_error(ira);
9344	10057	}
9345		ir_build_return_from(&ira->new_irb, &return_instruction->base, casted_value);
9346		return ir_finish_anal(ira, ira->codegen->builtin_types.entry_unreachable);
	10058	IrInstruction *result = ir_build_return(&ira->new_irb, return_instruction->base.scope,
	10059	return_instruction->base.source_node, casted_value);
	10060	result->value.type = ira->codegen->builtin_types.entry_unreachable;
	10061	ir_link_new_instruction(result, &return_instruction->base);
	10062	return ir_finish_anal(ira, result->value.type);
9347	10063	}
9348	10064
9349	10065	static TypeTableEntry ir_analyze_instruction_const(IrAnalyze ira, IrInstructionConst *const_instruction) {
...	...	@@ -9568,6 +10284,7 @@ static TypeTableEntry ir_analyze_bin_op_cmp(IrAnalyze ira, IrInstructionBinOp
9568	10284	case TypeTableEntryIdBlock:
9569	10285	case TypeTableEntryIdBoundFn:
9570	10286	case TypeTableEntryIdArgTuple:
	10287	case TypeTableEntryIdPromise:
9571	10288	if (!is_equality_cmp) {
9572	10289	ir_add_error_node(ira, source_node,
9573	10290	buf_sprintf("operator not allowed for type '%s'", buf_ptr(&resolved_type->name)));
...	...	@@ -10397,6 +11114,7 @@ static VarClassRequired get_var_class_required(TypeTableEntry *type_entry) {
10397	11114	case TypeTableEntryIdVoid:
10398	11115	case TypeTableEntryIdErrorSet:
10399	11116	case TypeTableEntryIdFn:
	11117	case TypeTableEntryIdPromise:
10400	11118	return VarClassRequiredAny;
10401	11119	case TypeTableEntryIdNumLitFloat:
10402	11120	case TypeTableEntryIdNumLitInt:
...	...	@@ -10573,6 +11291,11 @@ static TypeTableEntry ir_analyze_instruction_export(IrAnalyze ira, IrInstructi
10573	11291	buf_sprintf("exported function must specify calling convention"));
10574	11292	add_error_note(ira->codegen, msg, fn_entry->proto_node, buf_sprintf("declared here"));
10575	11293	} break;
	11294	case CallingConventionAsync: {
	11295	ErrorMsg *msg = ir_add_error(ira, target,
	11296	buf_sprintf("exported function cannot be async"));
	11297	add_error_note(ira->codegen, msg, fn_entry->proto_node, buf_sprintf("declared here"));
	11298	} break;
10576	11299	case CallingConventionC:
10577	11300	case CallingConventionNaked:
10578	11301	case CallingConventionCold:
...	...	@@ -10662,6 +11385,7 @@ static TypeTableEntry ir_analyze_instruction_export(IrAnalyze ira, IrInstructi
10662	11385	case TypeTableEntryIdBoundFn:
10663	11386	case TypeTableEntryIdArgTuple:
10664	11387	case TypeTableEntryIdOpaque:
	11388	case TypeTableEntryIdPromise:
10665	11389	ir_add_error(ira, target,
10666	11390	buf_sprintf("invalid export target '%s'", buf_ptr(&type_value->name)));
10667	11391	break;
...	...	@@ -10686,6 +11410,7 @@ static TypeTableEntry ir_analyze_instruction_export(IrAnalyze ira, IrInstructi
10686	11410	case TypeTableEntryIdBoundFn:
10687	11411	case TypeTableEntryIdArgTuple:
10688	11412	case TypeTableEntryIdOpaque:
	11413	case TypeTableEntryIdPromise:
10689	11414	ir_add_error(ira, target,
10690	11415	buf_sprintf("invalid export target type '%s'", buf_ptr(&target->value.type->name)));
10691	11416	break;
...	...	@@ -10738,6 +11463,81 @@ static TypeTableEntry ir_analyze_instruction_error_union(IrAnalyze ira,
10738	11463	return ira->codegen->builtin_types.entry_type;
10739	11464	}
10740	11465
	11466	IrInstruction ir_get_implicit_allocator(IrAnalyze ira, IrInstruction *source_instr, ImplicitAllocatorId id) {
	11467	FnTableEntry *parent_fn_entry = exec_fn_entry(ira->new_irb.exec);
	11468	if (parent_fn_entry == nullptr) {
	11469	ir_add_error(ira, source_instr, buf_sprintf("no implicit allocator available"));
	11470	return ira->codegen->invalid_instruction;
	11471	}
	11472
	11473	FnTypeId *parent_fn_type = &parent_fn_entry->type_entry->data.fn.fn_type_id;
	11474	if (parent_fn_type->cc != CallingConventionAsync) {
	11475	ir_add_error(ira, source_instr, buf_sprintf("async function call from non-async caller requires allocator parameter"));
	11476	return ira->codegen->invalid_instruction;
	11477	}
	11478
	11479	assert(parent_fn_type->async_allocator_type != nullptr);
	11480
	11481	switch (id) {
	11482	case ImplicitAllocatorIdArg:
	11483	{
	11484	IrInstruction *result = ir_build_get_implicit_allocator(&ira->new_irb, source_instr->scope,
	11485	source_instr->source_node, ImplicitAllocatorIdArg);
	11486	result->value.type = parent_fn_type->async_allocator_type;
	11487	return result;
	11488	}
	11489	case ImplicitAllocatorIdLocalVar:
	11490	{
	11491	VariableTableEntry *coro_allocator_var = ira->old_irb.exec->coro_allocator_var;
	11492	assert(coro_allocator_var != nullptr);
	11493	IrInstruction *var_ptr_inst = ir_get_var_ptr(ira, source_instr, coro_allocator_var, true, false);
	11494	IrInstruction *result = ir_get_deref(ira, source_instr, var_ptr_inst);
	11495	assert(result->value.type != nullptr);
	11496	return result;
	11497	}
	11498	}
	11499	zig_unreachable();
	11500	}
	11501
	11502	static IrInstruction ir_analyze_async_call(IrAnalyze ira, IrInstructionCall call_instruction, FnTableEntry fn_entry, TypeTableEntry *fn_type,
	11503	IrInstruction fn_ref, IrInstruction casted_args, size_t arg_count, IrInstruction async_allocator_inst)
	11504	{
	11505	Buf *alloc_field_name = buf_create_from_str(ASYNC_ALLOC_FIELD_NAME);
	11506	//Buf *free_field_name = buf_create_from_str("freeFn");
	11507	assert(async_allocator_inst->value.type->id == TypeTableEntryIdPointer);
	11508	TypeTableEntry *container_type = async_allocator_inst->value.type->data.pointer.child_type;
	11509	IrInstruction *field_ptr_inst = ir_analyze_container_field_ptr(ira, alloc_field_name, &call_instruction->base,
	11510	async_allocator_inst, container_type);
	11511	if (type_is_invalid(field_ptr_inst->value.type)) {
	11512	return ira->codegen->invalid_instruction;
	11513	}
	11514	TypeTableEntry *ptr_to_alloc_fn_type = field_ptr_inst->value.type;
	11515	assert(ptr_to_alloc_fn_type->id == TypeTableEntryIdPointer);
	11516
	11517	TypeTableEntry *alloc_fn_type = ptr_to_alloc_fn_type->data.pointer.child_type;
	11518	if (alloc_fn_type->id != TypeTableEntryIdFn) {
	11519	ir_add_error(ira, &call_instruction->base,
	11520	buf_sprintf("expected allocation function, found '%s'", buf_ptr(&alloc_fn_type->name)));
	11521	return ira->codegen->invalid_instruction;
	11522	}
	11523
	11524	TypeTableEntry *alloc_fn_return_type = alloc_fn_type->data.fn.fn_type_id.return_type;
	11525	if (alloc_fn_return_type->id != TypeTableEntryIdErrorUnion) {
	11526	ir_add_error(ira, fn_ref,
	11527	buf_sprintf("expected allocation function to return error union, but it returns '%s'", buf_ptr(&alloc_fn_return_type->name)));
	11528	return ira->codegen->invalid_instruction;
	11529	}
	11530	TypeTableEntry *alloc_fn_error_set_type = alloc_fn_return_type->data.error_union.err_set_type;
	11531	TypeTableEntry *return_type = fn_type->data.fn.fn_type_id.return_type;
	11532	TypeTableEntry *promise_type = get_promise_type(ira->codegen, return_type);
	11533	TypeTableEntry *async_return_type = get_error_union_type(ira->codegen, alloc_fn_error_set_type, promise_type);
	11534
	11535	IrInstruction *result = ir_build_call(&ira->new_irb, call_instruction->base.scope, call_instruction->base.source_node,
	11536	fn_entry, fn_ref, arg_count, casted_args, false, FnInlineAuto, true, async_allocator_inst);
	11537	result->value.type = async_return_type;
	11538	return result;
	11539	}
	11540
10741	11541	static bool ir_analyze_fn_call_inline_arg(IrAnalyze ira, AstNode fn_proto_node,
10742	11542	IrInstruction arg, Scope exec_scope, size_t next_proto_i)
10743	11543	{
...	...	@@ -10952,6 +11752,20 @@ static TypeTableEntry ir_analyze_fn_call(IrAnalyze ira, IrInstructionCall *cal
10952	11752	}
10953	11753	return ira->codegen->builtin_types.entry_invalid;
10954	11754	}
	11755	if (fn_type_id->cc == CallingConventionAsync && !call_instruction->is_async) {
	11756	ErrorMsg *msg = ir_add_error(ira, fn_ref, buf_sprintf("must use async keyword to call async function"));
	11757	if (fn_proto_node) {
	11758	add_error_note(ira->codegen, msg, fn_proto_node, buf_sprintf("declared here"));
	11759	}
	11760	return ira->codegen->builtin_types.entry_invalid;
	11761	}
	11762	if (fn_type_id->cc != CallingConventionAsync && call_instruction->is_async) {
	11763	ErrorMsg *msg = ir_add_error(ira, fn_ref, buf_sprintf("cannot use async keyword to call non-async function"));
	11764	if (fn_proto_node) {
	11765	add_error_note(ira->codegen, msg, fn_proto_node, buf_sprintf("declared here"));
	11766	}
	11767	return ira->codegen->builtin_types.entry_invalid;
	11768	}
10955	11769
10956	11770
10957	11771	if (fn_type_id->is_var_args) {
...	...	@@ -11078,6 +11892,11 @@ static TypeTableEntry ir_analyze_fn_call(IrAnalyze ira, IrInstructionCall *cal
11078	11892	buf_sprintf("calling a generic function requires compile-time known function value"));
11079	11893	return ira->codegen->builtin_types.entry_invalid;
11080	11894	}
	11895	if (call_instruction->is_async && fn_type_id->is_var_args) {
	11896	ir_add_error(ira, call_instruction->fn_ref,
	11897	buf_sprintf("compiler bug: TODO: implement var args async functions. https://github.com/zig-lang/zig/issues/557"));
	11898	return ira->codegen->builtin_types.entry_invalid;
	11899	}
11081	11900
11082	11901	// Count the arguments of the function type id we are creating
11083	11902	size_t new_fn_arg_count = first_arg_1_or_0;
...	...	@@ -11226,6 +12045,36 @@ static TypeTableEntry ir_analyze_fn_call(IrAnalyze ira, IrInstructionCall *cal
11226	12045	return ir_analyze_fn_call(ira, call_instruction, fn_entry, fn_type, fn_ref, first_arg_ptr, true, FnInlineAuto);
11227	12046	}
11228	12047	}
	12048	IrInstruction *async_allocator_inst = nullptr;
	12049	if (call_instruction->is_async) {
	12050	AstNode *async_allocator_type_node = fn_proto_node->data.fn_proto.async_allocator_type;
	12051	if (async_allocator_type_node != nullptr) {
	12052	TypeTableEntry *async_allocator_type = analyze_type_expr(ira->codegen, impl_fn->child_scope, async_allocator_type_node);
	12053	if (type_is_invalid(async_allocator_type))
	12054	return ira->codegen->builtin_types.entry_invalid;
	12055	inst_fn_type_id.async_allocator_type = async_allocator_type;
	12056	}
	12057	IrInstruction *uncasted_async_allocator_inst;
	12058	if (call_instruction->async_allocator == nullptr) {
	12059	uncasted_async_allocator_inst = ir_get_implicit_allocator(ira, &call_instruction->base,
	12060	ImplicitAllocatorIdLocalVar);
	12061	if (type_is_invalid(uncasted_async_allocator_inst->value.type))
	12062	return ira->codegen->builtin_types.entry_invalid;
	12063	} else {
	12064	uncasted_async_allocator_inst = call_instruction->async_allocator->other;
	12065	if (type_is_invalid(uncasted_async_allocator_inst->value.type))
	12066	return ira->codegen->builtin_types.entry_invalid;
	12067	}
	12068	if (inst_fn_type_id.async_allocator_type == nullptr) {
	12069	IrInstruction *casted_inst = ir_implicit_byval_const_ref_cast(ira, uncasted_async_allocator_inst);
	12070	if (type_is_invalid(casted_inst->value.type))
	12071	return ira->codegen->builtin_types.entry_invalid;
	12072	inst_fn_type_id.async_allocator_type = casted_inst->value.type;
	12073	}
	12074	async_allocator_inst = ir_implicit_cast(ira, uncasted_async_allocator_inst, inst_fn_type_id.async_allocator_type);
	12075	if (type_is_invalid(async_allocator_inst->value.type))
	12076	return ira->codegen->builtin_types.entry_invalid;
	12077	}
11229	12078
11230	12079	auto existing_entry = ira->codegen->generic_table.put_unique(generic_id, impl_fn);
11231	12080	if (existing_entry) {
...	...	@@ -11245,24 +12094,34 @@ static TypeTableEntry ir_analyze_fn_call(IrAnalyze ira, IrInstructionCall *cal
11245	12094	ira->codegen->fn_defs.append(impl_fn);
11246	12095	}
11247	12096
	12097	TypeTableEntry *return_type = impl_fn->type_entry->data.fn.fn_type_id.return_type;
	12098	if (fn_type_can_fail(&impl_fn->type_entry->data.fn.fn_type_id)) {
	12099	parent_fn_entry->calls_errorable_function = true;
	12100	}
	12101
11248	12102	size_t impl_param_count = impl_fn->type_entry->data.fn.fn_type_id.param_count;
	12103	if (call_instruction->is_async) {
	12104	IrInstruction *result = ir_analyze_async_call(ira, call_instruction, impl_fn, impl_fn->type_entry, fn_ref, casted_args, impl_param_count,
	12105	async_allocator_inst);
	12106	ir_link_new_instruction(result, &call_instruction->base);
	12107	ir_add_alloca(ira, result, result->value.type);
	12108	return ir_finish_anal(ira, result->value.type);
	12109	}
	12110
	12111	assert(async_allocator_inst == nullptr);
11249	12112	IrInstruction *new_call_instruction = ir_build_call_from(&ira->new_irb, &call_instruction->base,
11250		impl_fn, nullptr, impl_param_count, casted_args, false, fn_inline);
	12113	impl_fn, nullptr, impl_param_count, casted_args, false, fn_inline,
	12114	call_instruction->is_async, nullptr);
11251	12115
11252		TypeTableEntry *return_type = impl_fn->type_entry->data.fn.fn_type_id.return_type;
11253	12116	ir_add_alloca(ira, new_call_instruction, return_type);
11254	12117
11255		if (return_type->id == TypeTableEntryIdErrorSet \|\| return_type->id == TypeTableEntryIdErrorUnion) {
11256		parent_fn_entry->calls_errorable_function = true;
11257		}
11258
11259	12118	return ir_finish_anal(ira, return_type);
11260	12119	}
11261	12120
11262	12121	FnTableEntry *parent_fn_entry = exec_fn_entry(ira->new_irb.exec);
11263	12122	assert(fn_type_id->return_type != nullptr);
11264	12123	assert(parent_fn_entry != nullptr);
11265		if (fn_type_id->return_type->id == TypeTableEntryIdErrorSet \|\| fn_type_id->return_type->id == TypeTableEntryIdErrorUnion) {
	12124	if (fn_type_can_fail(fn_type_id)) {
11266	12125	parent_fn_entry->calls_errorable_function = true;
11267	12126	}
11268	12127
...	...	@@ -11317,8 +12176,33 @@ static TypeTableEntry ir_analyze_fn_call(IrAnalyze ira, IrInstructionCall *cal
11317	12176	if (type_is_invalid(return_type))
11318	12177	return ira->codegen->builtin_types.entry_invalid;
11319	12178
	12179	if (call_instruction->is_async) {
	12180	IrInstruction *uncasted_async_allocator_inst;
	12181	if (call_instruction->async_allocator == nullptr) {
	12182	uncasted_async_allocator_inst = ir_get_implicit_allocator(ira, &call_instruction->base,
	12183	ImplicitAllocatorIdLocalVar);
	12184	if (type_is_invalid(uncasted_async_allocator_inst->value.type))
	12185	return ira->codegen->builtin_types.entry_invalid;
	12186	} else {
	12187	uncasted_async_allocator_inst = call_instruction->async_allocator->other;
	12188	if (type_is_invalid(uncasted_async_allocator_inst->value.type))
	12189	return ira->codegen->builtin_types.entry_invalid;
	12190
	12191	}
	12192	IrInstruction *async_allocator_inst = ir_implicit_cast(ira, uncasted_async_allocator_inst, fn_type_id->async_allocator_type);
	12193	if (type_is_invalid(async_allocator_inst->value.type))
	12194	return ira->codegen->builtin_types.entry_invalid;
	12195
	12196	IrInstruction *result = ir_analyze_async_call(ira, call_instruction, fn_entry, fn_type, fn_ref, casted_args, call_param_count,
	12197	async_allocator_inst);
	12198	ir_link_new_instruction(result, &call_instruction->base);
	12199	ir_add_alloca(ira, result, result->value.type);
	12200	return ir_finish_anal(ira, result->value.type);
	12201	}
	12202
	12203
11320	12204	IrInstruction *new_call_instruction = ir_build_call_from(&ira->new_irb, &call_instruction->base,
11321		fn_entry, fn_ref, call_param_count, casted_args, false, fn_inline);
	12205	fn_entry, fn_ref, call_param_count, casted_args, false, fn_inline, false, nullptr);
11322	12206
11323	12207	ir_add_alloca(ira, new_call_instruction, return_type);
11324	12208	return ir_finish_anal(ira, return_type);
...	...	@@ -11444,6 +12328,7 @@ static TypeTableEntry ir_analyze_maybe(IrAnalyze ira, IrInstructionUnOp *un_op
11444	12328	case TypeTableEntryIdBlock:
11445	12329	case TypeTableEntryIdBoundFn:
11446	12330	case TypeTableEntryIdArgTuple:
	12331	case TypeTableEntryIdPromise:
11447	12332	{
11448	12333	ConstExprValue *out_val = ir_build_const_from(ira, &un_op_instruction->base);
11449	12334	out_val->data.x_type = get_maybe_type(ira->codegen, type_entry);
...	...	@@ -12012,8 +12897,8 @@ static TypeTableEntry ir_analyze_instruction_elem_ptr(IrAnalyze ira, IrInstruc
12012	12897	return return_type;
12013	12898	}
12014	12899
12015		static TypeTableEntry ir_analyze_container_member_access_inner(IrAnalyze ira,
12016		TypeTableEntry bare_struct_type, Buf field_name, IrInstructionFieldPtr *field_ptr_instruction,
	12900	static IrInstruction ir_analyze_container_member_access_inner(IrAnalyze ira,
	12901	TypeTableEntry bare_struct_type, Buf field_name, IrInstruction *source_instr,
12017	12902	IrInstruction container_ptr, TypeTableEntry container_type)
12018	12903	{
12019	12904	if (!is_slice(bare_struct_type)) {
...	...	@@ -12021,17 +12906,17 @@ static TypeTableEntry ir_analyze_container_member_access_inner(IrAnalyze ira,
12021	12906	auto entry = container_scope->decl_table.maybe_get(field_name);
12022	12907	Tld *tld = entry ? entry->value : nullptr;
12023	12908	if (tld && tld->id == TldIdFn) {
12024		resolve_top_level_decl(ira->codegen, tld, false, field_ptr_instruction->base.source_node);
	12909	resolve_top_level_decl(ira->codegen, tld, false, source_instr->source_node);
12025	12910	if (tld->resolution == TldResolutionInvalid)
12026		return ira->codegen->builtin_types.entry_invalid;
	12911	return ira->codegen->invalid_instruction;
12027	12912	TldFn tld_fn = (TldFn )tld;
12028	12913	FnTableEntry *fn_entry = tld_fn->fn_entry;
12029	12914	if (type_is_invalid(fn_entry->type_entry))
12030		return ira->codegen->builtin_types.entry_invalid;
	12915	return ira->codegen->invalid_instruction;
12031	12916
12032		IrInstruction *bound_fn_value = ir_build_const_bound_fn(&ira->new_irb, field_ptr_instruction->base.scope,
12033		field_ptr_instruction->base.source_node, fn_entry, container_ptr);
12034		return ir_analyze_ref(ira, &field_ptr_instruction->base, bound_fn_value, true, false);
	12917	IrInstruction *bound_fn_value = ir_build_const_bound_fn(&ira->new_irb, source_instr->scope,
	12918	source_instr->source_node, fn_entry, container_ptr);
	12919	return ir_get_ref(ira, source_instr, bound_fn_value, true, false);
12035	12920	}
12036	12921	}
12037	12922	const char *prefix_name;
...	...	@@ -12046,19 +12931,19 @@ static TypeTableEntry ir_analyze_container_member_access_inner(IrAnalyze ira,
12046	12931	} else {
12047	12932	prefix_name = "";
12048	12933	}
12049		ir_add_error_node(ira, field_ptr_instruction->base.source_node,
	12934	ir_add_error_node(ira, source_instr->source_node,
12050	12935	buf_sprintf("no member named '%s' in %s'%s'", buf_ptr(field_name), prefix_name, buf_ptr(&bare_struct_type->name)));
12051		return ira->codegen->builtin_types.entry_invalid;
	12936	return ira->codegen->invalid_instruction;
12052	12937	}
12053	12938
12054	12939
12055		static TypeTableEntry ir_analyze_container_field_ptr(IrAnalyze ira, Buf *field_name,
12056		IrInstructionFieldPtr field_ptr_instruction, IrInstruction container_ptr, TypeTableEntry *container_type)
	12940	static IrInstruction ir_analyze_container_field_ptr(IrAnalyze ira, Buf *field_name,
	12941	IrInstruction source_instr, IrInstruction container_ptr, TypeTableEntry *container_type)
12057	12942	{
12058	12943	TypeTableEntry *bare_type = container_ref_type(container_type);
12059	12944	ensure_complete_type(ira->codegen, bare_type);
12060	12945	if (type_is_invalid(bare_type))
12061		return ira->codegen->builtin_types.entry_invalid;
	12946	return ira->codegen->invalid_instruction;
12062	12947
12063	12948	assert(container_ptr->value.type->id == TypeTableEntryIdPointer);
12064	12949	bool is_const = container_ptr->value.type->data.pointer.is_const;
...	...	@@ -12075,46 +12960,51 @@ static TypeTableEntry ir_analyze_container_field_ptr(IrAnalyze ira, Buf *field
12075	12960	if (instr_is_comptime(container_ptr)) {
12076	12961	ConstExprValue *ptr_val = ir_resolve_const(ira, container_ptr, UndefBad);
12077	12962	if (!ptr_val)
12078		return ira->codegen->builtin_types.entry_invalid;
	12963	return ira->codegen->invalid_instruction;
12079	12964
12080	12965	if (ptr_val->data.x_ptr.special != ConstPtrSpecialHardCodedAddr) {
12081	12966	ConstExprValue *struct_val = const_ptr_pointee(ira->codegen, ptr_val);
12082	12967	if (type_is_invalid(struct_val->type))
12083		return ira->codegen->builtin_types.entry_invalid;
	12968	return ira->codegen->invalid_instruction;
12084	12969	ConstExprValue *field_val = &struct_val->data.x_struct.fields[field->src_index];
12085	12970	TypeTableEntry *ptr_type = get_pointer_to_type_extra(ira->codegen, field_val->type,
12086	12971	is_const, is_volatile, align_bytes,
12087	12972	(uint32_t)(ptr_bit_offset + field->packed_bits_offset),
12088	12973	(uint32_t)unaligned_bit_count_for_result_type);
12089		ConstExprValue *const_val = ir_build_const_from(ira, &field_ptr_instruction->base);
	12974	IrInstruction *result = ir_get_const(ira, source_instr);
	12975	ConstExprValue *const_val = &result->value;
12090	12976	const_val->data.x_ptr.special = ConstPtrSpecialBaseStruct;
12091	12977	const_val->data.x_ptr.mut = container_ptr->value.data.x_ptr.mut;
12092	12978	const_val->data.x_ptr.data.base_struct.struct_val = struct_val;
12093	12979	const_val->data.x_ptr.data.base_struct.field_index = field->src_index;
12094		return ptr_type;
	12980	const_val->type = ptr_type;
	12981	return result;
12095	12982	}
12096	12983	}
12097		ir_build_struct_field_ptr_from(&ira->new_irb, &field_ptr_instruction->base, container_ptr, field);
12098		return get_pointer_to_type_extra(ira->codegen, field->type_entry, is_const, is_volatile,
	12984	IrInstruction *result = ir_build_struct_field_ptr(&ira->new_irb, source_instr->scope, source_instr->source_node,
	12985	container_ptr, field);
	12986	result->value.type = get_pointer_to_type_extra(ira->codegen, field->type_entry, is_const, is_volatile,
12099	12987	align_bytes,
12100	12988	(uint32_t)(ptr_bit_offset + field->packed_bits_offset),
12101	12989	(uint32_t)unaligned_bit_count_for_result_type);
	12990	return result;
12102	12991	} else {
12103	12992	return ir_analyze_container_member_access_inner(ira, bare_type, field_name,
12104		field_ptr_instruction, container_ptr, container_type);
	12993	source_instr, container_ptr, container_type);
12105	12994	}
12106	12995	} else if (bare_type->id == TypeTableEntryIdEnum) {
12107	12996	return ir_analyze_container_member_access_inner(ira, bare_type, field_name,
12108		field_ptr_instruction, container_ptr, container_type);
	12997	source_instr, container_ptr, container_type);
12109	12998	} else if (bare_type->id == TypeTableEntryIdUnion) {
12110	12999	TypeUnionField *field = find_union_type_field(bare_type, field_name);
12111	13000	if (field) {
12112		ir_build_union_field_ptr_from(&ira->new_irb, &field_ptr_instruction->base, container_ptr, field);
12113		return get_pointer_to_type_extra(ira->codegen, field->type_entry, is_const, is_volatile,
	13001	IrInstruction *result = ir_build_union_field_ptr(&ira->new_irb, source_instr->scope, source_instr->source_node, container_ptr, field);
	13002	result->value.type = get_pointer_to_type_extra(ira->codegen, field->type_entry, is_const, is_volatile,
12114	13003	get_abi_alignment(ira->codegen, field->type_entry), 0, 0);
	13004	return result;
12115	13005	} else {
12116	13006	return ir_analyze_container_member_access_inner(ira, bare_type, field_name,
12117		field_ptr_instruction, container_ptr, container_type);
	13007	source_instr, container_ptr, container_type);
12118	13008	}
12119	13009	} else {
12120	13010	zig_unreachable();
...	...	@@ -12224,9 +13114,13 @@ static TypeTableEntry ir_analyze_instruction_field_ptr(IrAnalyze ira, IrInstru
12224	13114	if (container_type->id == TypeTableEntryIdPointer) {
12225	13115	TypeTableEntry *bare_type = container_ref_type(container_type);
12226	13116	IrInstruction *container_child = ir_get_deref(ira, &field_ptr_instruction->base, container_ptr);
12227		return ir_analyze_container_field_ptr(ira, field_name, field_ptr_instruction, container_child, bare_type);
	13117	IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_child, bare_type);
	13118	ir_link_new_instruction(result, &field_ptr_instruction->base);
	13119	return result->value.type;
12228	13120	} else {
12229		return ir_analyze_container_field_ptr(ira, field_name, field_ptr_instruction, container_ptr, container_type);
	13121	IrInstruction *result = ir_analyze_container_field_ptr(ira, field_name, &field_ptr_instruction->base, container_ptr, container_type);
	13122	ir_link_new_instruction(result, &field_ptr_instruction->base);
	13123	return result->value.type;
12230	13124	}
12231	13125	} else if (container_type->id == TypeTableEntryIdArray) {
12232	13126	if (buf_eql_str(field_name, "len")) {
...	...	@@ -12673,6 +13567,7 @@ static TypeTableEntry ir_analyze_instruction_typeof(IrAnalyze ira, IrInstructi
12673	13567	case TypeTableEntryIdFn:
12674	13568	case TypeTableEntryIdArgTuple:
12675	13569	case TypeTableEntryIdOpaque:
	13570	case TypeTableEntryIdPromise:
12676	13571	{
12677	13572	ConstExprValue *out_val = ir_build_const_from(ira, &typeof_instruction->base);
12678	13573	out_val->data.x_type = type_entry;
...	...	@@ -12940,6 +13835,7 @@ static TypeTableEntry ir_analyze_instruction_slice_type(IrAnalyze ira,
12940	13835	case TypeTableEntryIdFn:
12941	13836	case TypeTableEntryIdNamespace:
12942	13837	case TypeTableEntryIdBoundFn:
	13838	case TypeTableEntryIdPromise:
12943	13839	{
12944	13840	type_ensure_zero_bits_known(ira->codegen, child_type);
12945	13841	TypeTableEntry *slice_ptr_type = get_pointer_to_type_extra(ira->codegen, child_type,
...	...	@@ -13048,6 +13944,7 @@ static TypeTableEntry ir_analyze_instruction_array_type(IrAnalyze ira,
13048	13944	case TypeTableEntryIdFn:
13049	13945	case TypeTableEntryIdNamespace:
13050	13946	case TypeTableEntryIdBoundFn:
	13947	case TypeTableEntryIdPromise:
13051	13948	{
13052	13949	TypeTableEntry *result_type = get_array_type(ira->codegen, child_type, size);
13053	13950	ConstExprValue *out_val = ir_build_const_from(ira, &array_type_instruction->base);
...	...	@@ -13099,6 +13996,7 @@ static TypeTableEntry ir_analyze_instruction_size_of(IrAnalyze ira,
13099	13996	case TypeTableEntryIdEnum:
13100	13997	case TypeTableEntryIdUnion:
13101	13998	case TypeTableEntryIdFn:
	13999	case TypeTableEntryIdPromise:
13102	14000	{
13103	14001	uint64_t size_in_bytes = type_size(ira->codegen, type_entry);
13104	14002	ConstExprValue *out_val = ir_build_const_from(ira, &size_of_instruction->base);
...	...	@@ -13428,6 +14326,7 @@ static TypeTableEntry ir_analyze_instruction_switch_target(IrAnalyze ira,
13428	14326	case TypeTableEntryIdNumLitFloat:
13429	14327	case TypeTableEntryIdNumLitInt:
13430	14328	case TypeTableEntryIdPointer:
	14329	case TypeTableEntryIdPromise:
13431	14330	case TypeTableEntryIdFn:
13432	14331	case TypeTableEntryIdNamespace:
13433	14332	case TypeTableEntryIdErrorSet:
...	...	@@ -14016,6 +14915,7 @@ static TypeTableEntry ir_analyze_min_max(IrAnalyze ira, IrInstruction *source_
14016	14915	case TypeTableEntryIdMetaType:
14017	14916	case TypeTableEntryIdUnreachable:
14018	14917	case TypeTableEntryIdPointer:
	14918	case TypeTableEntryIdPromise:
14019	14919	case TypeTableEntryIdArray:
14020	14920	case TypeTableEntryIdStruct:
14021	14921	case TypeTableEntryIdNumLitFloat:
...	...	@@ -15276,6 +16176,7 @@ static TypeTableEntry ir_analyze_instruction_align_of(IrAnalyze ira, IrInstruc
15276	16176	case TypeTableEntryIdInt:
15277	16177	case TypeTableEntryIdFloat:
15278	16178	case TypeTableEntryIdPointer:
	16179	case TypeTableEntryIdPromise:
15279	16180	case TypeTableEntryIdArray:
15280	16181	case TypeTableEntryIdStruct:
15281	16182	case TypeTableEntryIdMaybe:
...	...	@@ -15904,12 +16805,12 @@ static TypeTableEntry ir_analyze_instruction_ptr_cast(IrAnalyze ira, IrInstruc
15904	16805	if (type_is_invalid(src_type))
15905	16806	return ira->codegen->builtin_types.entry_invalid;
15906	16807
15907		if (!type_is_codegen_pointer(src_type)) {
	16808	if (get_codegen_ptr_type(src_type) == nullptr) {
15908	16809	ir_add_error(ira, ptr, buf_sprintf("expected pointer, found '%s'", buf_ptr(&src_type->name)));
15909	16810	return ira->codegen->builtin_types.entry_invalid;
15910	16811	}
15911	16812
15912		if (!type_is_codegen_pointer(dest_type)) {
	16813	if (get_codegen_ptr_type(dest_type) == nullptr) {
15913	16814	ir_add_error(ira, dest_type_value,
15914	16815	buf_sprintf("expected pointer, found '%s'", buf_ptr(&dest_type->name)));
15915	16816	return ira->codegen->builtin_types.entry_invalid;
...	...	@@ -15971,6 +16872,7 @@ static void buf_write_value_bytes(CodeGen codegen, uint8_t buf, ConstExprValue
15971	16872	case TypeTableEntryIdNumLitInt:
15972	16873	case TypeTableEntryIdUndefLit:
15973	16874	case TypeTableEntryIdNullLit:
	16875	case TypeTableEntryIdPromise:
15974	16876	zig_unreachable();
15975	16877	case TypeTableEntryIdVoid:
15976	16878	return;
...	...	@@ -16038,6 +16940,7 @@ static void buf_read_value_bytes(CodeGen codegen, uint8_t buf, ConstExprValue
16038	16940	case TypeTableEntryIdNumLitInt:
16039	16941	case TypeTableEntryIdUndefLit:
16040	16942	case TypeTableEntryIdNullLit:
	16943	case TypeTableEntryIdPromise:
16041	16944	zig_unreachable();
16042	16945	case TypeTableEntryIdVoid:
16043	16946	return;
...	...	@@ -16094,9 +16997,9 @@ static TypeTableEntry ir_analyze_instruction_bit_cast(IrAnalyze ira, IrInstruc
16094	16997	ensure_complete_type(ira->codegen, dest_type);
16095	16998	ensure_complete_type(ira->codegen, src_type);
16096	16999
16097		if (type_is_codegen_pointer(src_type)) {
	17000	if (get_codegen_ptr_type(src_type) != nullptr) {
16098	17001	ir_add_error(ira, value,
16099		buf_sprintf("unable to @bitCast from type '%s'", buf_ptr(&src_type->name)));
	17002	buf_sprintf("unable to @bitCast from pointer type '%s'", buf_ptr(&src_type->name)));
16100	17003	return ira->codegen->builtin_types.entry_invalid;
16101	17004	}
16102	17005
...	...	@@ -16121,9 +17024,9 @@ static TypeTableEntry ir_analyze_instruction_bit_cast(IrAnalyze ira, IrInstruc
16121	17024	break;
16122	17025	}
16123	17026
16124		if (type_is_codegen_pointer(dest_type)) {
	17027	if (get_codegen_ptr_type(dest_type) != nullptr) {
16125	17028	ir_add_error(ira, dest_type_value,
16126		buf_sprintf("unable to @bitCast to type '%s'", buf_ptr(&dest_type->name)));
	17029	buf_sprintf("unable to @bitCast to pointer type '%s'", buf_ptr(&dest_type->name)));
16127	17030	return ira->codegen->builtin_types.entry_invalid;
16128	17031	}
16129	17032
...	...	@@ -16184,7 +17087,7 @@ static TypeTableEntry ir_analyze_instruction_int_to_ptr(IrAnalyze ira, IrInstr
16184	17087	if (type_is_invalid(dest_type))
16185	17088	return ira->codegen->builtin_types.entry_invalid;
16186	17089
16187		if (!type_is_codegen_pointer(dest_type)) {
	17090	if (get_codegen_ptr_type(dest_type) == nullptr) {
16188	17091	ir_add_error(ira, dest_type_value, buf_sprintf("expected pointer, found '%s'", buf_ptr(&dest_type->name)));
16189	17092	return ira->codegen->builtin_types.entry_invalid;
16190	17093	}
...	...	@@ -16290,12 +17193,7 @@ static TypeTableEntry ir_analyze_instruction_ptr_to_int(IrAnalyze ira, IrInstr
16290	17193
16291	17194	TypeTableEntry *usize = ira->codegen->builtin_types.entry_usize;
16292	17195
16293		if (!(target->value.type->id == TypeTableEntryIdPointer \|\|
16294		target->value.type->id == TypeTableEntryIdFn \|\|
16295		(target->value.type->id == TypeTableEntryIdMaybe &&
16296		(target->value.type->data.maybe.child_type->id == TypeTableEntryIdPointer \|\|
16297		target->value.type->data.maybe.child_type->id == TypeTableEntryIdFn))))
16298		{
	17196	if (get_codegen_ptr_type(target->value.type) == nullptr) {
16299	17197	ir_add_error(ira, target,
16300	17198	buf_sprintf("expected pointer, found '%s'", buf_ptr(&target->value.type->name)));
16301	17199	return ira->codegen->builtin_types.entry_invalid;
...	...	@@ -16479,6 +17377,292 @@ static TypeTableEntry ir_analyze_instruction_tag_type(IrAnalyze ira, IrInstruc
16479	17377	}
16480	17378	}
16481	17379
	17380	static TypeTableEntry ir_analyze_instruction_cancel(IrAnalyze ira, IrInstructionCancel *instruction) {
	17381	IrInstruction *target_inst = instruction->target->other;
	17382	if (type_is_invalid(target_inst->value.type))
	17383	return ira->codegen->builtin_types.entry_invalid;
	17384	IrInstruction *casted_target = ir_implicit_cast(ira, target_inst, ira->codegen->builtin_types.entry_promise);
	17385	if (type_is_invalid(casted_target->value.type))
	17386	return ira->codegen->builtin_types.entry_invalid;
	17387
	17388	IrInstruction *result = ir_build_cancel(&ira->new_irb, instruction->base.scope, instruction->base.source_node, casted_target);
	17389	result->value.type = ira->codegen->builtin_types.entry_void;
	17390	result->value.special = ConstValSpecialStatic;
	17391	ir_link_new_instruction(result, &instruction->base);
	17392	return result->value.type;
	17393	}
	17394
	17395	static TypeTableEntry ir_analyze_instruction_coro_id(IrAnalyze ira, IrInstructionCoroId *instruction) {
	17396	IrInstruction *promise_ptr = instruction->promise_ptr->other;
	17397	if (type_is_invalid(promise_ptr->value.type))
	17398	return ira->codegen->builtin_types.entry_invalid;
	17399
	17400	IrInstruction *result = ir_build_coro_id(&ira->new_irb, instruction->base.scope, instruction->base.source_node,
	17401	promise_ptr);
	17402	ir_link_new_instruction(result, &instruction->base);
	17403	result->value.type = ira->codegen->builtin_types.entry_usize;
	17404	return result->value.type;
	17405	}
	17406
	17407	static TypeTableEntry ir_analyze_instruction_coro_alloc(IrAnalyze ira, IrInstructionCoroAlloc *instruction) {
	17408	IrInstruction *coro_id = instruction->coro_id->other;
	17409	if (type_is_invalid(coro_id->value.type))
	17410	return ira->codegen->builtin_types.entry_invalid;
	17411
	17412	IrInstruction *result = ir_build_coro_alloc(&ira->new_irb, instruction->base.scope, instruction->base.source_node,
	17413	coro_id);
	17414	ir_link_new_instruction(result, &instruction->base);
	17415	result->value.type = ira->codegen->builtin_types.entry_bool;
	17416	return result->value.type;
	17417	}
	17418
	17419	static TypeTableEntry ir_analyze_instruction_coro_size(IrAnalyze ira, IrInstructionCoroSize *instruction) {
	17420	IrInstruction *result = ir_build_coro_size(&ira->new_irb, instruction->base.scope, instruction->base.source_node);
	17421	ir_link_new_instruction(result, &instruction->base);
	17422	result->value.type = ira->codegen->builtin_types.entry_usize;
	17423	return result->value.type;
	17424	}
	17425
	17426	static TypeTableEntry ir_analyze_instruction_coro_begin(IrAnalyze ira, IrInstructionCoroBegin *instruction) {
	17427	IrInstruction *coro_id = instruction->coro_id->other;
	17428	if (type_is_invalid(coro_id->value.type))
	17429	return ira->codegen->builtin_types.entry_invalid;
	17430
	17431	IrInstruction *coro_mem_ptr = instruction->coro_mem_ptr->other;
	17432	if (type_is_invalid(coro_mem_ptr->value.type))
	17433	return ira->codegen->builtin_types.entry_invalid;
	17434
	17435	FnTableEntry *fn_entry = exec_fn_entry(ira->new_irb.exec);
	17436	assert(fn_entry != nullptr);
	17437	IrInstruction *result = ir_build_coro_begin(&ira->new_irb, instruction->base.scope, instruction->base.source_node,
	17438	coro_id, coro_mem_ptr);
	17439	ir_link_new_instruction(result, &instruction->base);
	17440	result->value.type = get_promise_type(ira->codegen, fn_entry->type_entry->data.fn.fn_type_id.return_type);
	17441	return result->value.type;
	17442	}
	17443
	17444	static TypeTableEntry ir_analyze_instruction_get_implicit_allocator(IrAnalyze ira, IrInstructionGetImplicitAllocator *instruction) {
	17445	IrInstruction *result = ir_get_implicit_allocator(ira, &instruction->base, instruction->id);
	17446	ir_link_new_instruction(result, &instruction->base);
	17447	return result->value.type;
	17448	}
	17449
	17450	static TypeTableEntry ir_analyze_instruction_coro_alloc_fail(IrAnalyze ira, IrInstructionCoroAllocFail *instruction) {
	17451	IrInstruction *err_val = instruction->err_val->other;
	17452	if (type_is_invalid(err_val->value.type))
	17453	return ir_unreach_error(ira);
	17454
	17455	IrInstruction *result = ir_build_coro_alloc_fail(&ira->new_irb, instruction->base.scope, instruction->base.source_node, err_val);
	17456	ir_link_new_instruction(result, &instruction->base);
	17457	result->value.type = ira->codegen->builtin_types.entry_unreachable;
	17458	return ir_finish_anal(ira, result->value.type);
	17459	}
	17460
	17461	static TypeTableEntry ir_analyze_instruction_coro_suspend(IrAnalyze ira, IrInstructionCoroSuspend *instruction) {
	17462	IrInstruction *save_point = nullptr;
	17463	if (instruction->save_point != nullptr) {
	17464	save_point = instruction->save_point->other;
	17465	if (type_is_invalid(save_point->value.type))
	17466	return ira->codegen->builtin_types.entry_invalid;
	17467	}
	17468
	17469	IrInstruction *is_final = instruction->is_final->other;
	17470	if (type_is_invalid(is_final->value.type))
	17471	return ira->codegen->builtin_types.entry_invalid;
	17472
	17473	IrInstruction *result = ir_build_coro_suspend(&ira->new_irb, instruction->base.scope,
	17474	instruction->base.source_node, save_point, is_final);
	17475	ir_link_new_instruction(result, &instruction->base);
	17476	result->value.type = ira->codegen->builtin_types.entry_u8;
	17477	return result->value.type;
	17478	}
	17479
	17480	static TypeTableEntry ir_analyze_instruction_coro_end(IrAnalyze ira, IrInstructionCoroEnd *instruction) {
	17481	IrInstruction *result = ir_build_coro_end(&ira->new_irb, instruction->base.scope,
	17482	instruction->base.source_node);
	17483	ir_link_new_instruction(result, &instruction->base);
	17484	result->value.type = ira->codegen->builtin_types.entry_void;
	17485	return result->value.type;
	17486	}
	17487
	17488	static TypeTableEntry ir_analyze_instruction_coro_free(IrAnalyze ira, IrInstructionCoroFree *instruction) {
	17489	IrInstruction *coro_id = instruction->coro_id->other;
	17490	if (type_is_invalid(coro_id->value.type))
	17491	return ira->codegen->builtin_types.entry_invalid;
	17492
	17493	IrInstruction *coro_handle = instruction->coro_handle->other;
	17494	if (type_is_invalid(coro_handle->value.type))
	17495	return ira->codegen->builtin_types.entry_invalid;
	17496
	17497	IrInstruction *result = ir_build_coro_free(&ira->new_irb, instruction->base.scope,
	17498	instruction->base.source_node, coro_id, coro_handle);
	17499	ir_link_new_instruction(result, &instruction->base);
	17500	TypeTableEntry *ptr_type = get_pointer_to_type(ira->codegen, ira->codegen->builtin_types.entry_u8, false);
	17501	result->value.type = get_maybe_type(ira->codegen, ptr_type);
	17502	return result->value.type;
	17503	}
	17504
	17505	static TypeTableEntry ir_analyze_instruction_coro_resume(IrAnalyze ira, IrInstructionCoroResume *instruction) {
	17506	IrInstruction *awaiter_handle = instruction->awaiter_handle->other;
	17507	if (type_is_invalid(awaiter_handle->value.type))
	17508	return ira->codegen->builtin_types.entry_invalid;
	17509
	17510	IrInstruction *casted_target = ir_implicit_cast(ira, awaiter_handle, ira->codegen->builtin_types.entry_promise);
	17511	if (type_is_invalid(casted_target->value.type))
	17512	return ira->codegen->builtin_types.entry_invalid;
	17513
	17514	IrInstruction *result = ir_build_coro_resume(&ira->new_irb, instruction->base.scope,
	17515	instruction->base.source_node, casted_target);
	17516	ir_link_new_instruction(result, &instruction->base);
	17517	result->value.type = ira->codegen->builtin_types.entry_void;
	17518	return result->value.type;
	17519	}
	17520
	17521	static TypeTableEntry ir_analyze_instruction_coro_save(IrAnalyze ira, IrInstructionCoroSave *instruction) {
	17522	IrInstruction *coro_handle = instruction->coro_handle->other;
	17523	if (type_is_invalid(coro_handle->value.type))
	17524	return ira->codegen->builtin_types.entry_invalid;
	17525
	17526	IrInstruction *result = ir_build_coro_save(&ira->new_irb, instruction->base.scope,
	17527	instruction->base.source_node, coro_handle);
	17528	ir_link_new_instruction(result, &instruction->base);
	17529	result->value.type = ira->codegen->builtin_types.entry_usize;
	17530	return result->value.type;
	17531	}
	17532
	17533	static TypeTableEntry ir_analyze_instruction_coro_promise(IrAnalyze ira, IrInstructionCoroPromise *instruction) {
	17534	IrInstruction *coro_handle = instruction->coro_handle->other;
	17535	if (type_is_invalid(coro_handle->value.type))
	17536	return ira->codegen->builtin_types.entry_invalid;
	17537
	17538	if (coro_handle->value.type->id != TypeTableEntryIdPromise \|\|
	17539	coro_handle->value.type->data.promise.result_type == nullptr)
	17540	{
	17541	ir_add_error(ira, &instruction->base, buf_sprintf("expected promise->T, found '%s'",
	17542	buf_ptr(&coro_handle->value.type->name)));
	17543	return ira->codegen->builtin_types.entry_invalid;
	17544	}
	17545
	17546	TypeTableEntry *coro_frame_type = get_promise_frame_type(ira->codegen,
	17547	coro_handle->value.type->data.promise.result_type);
	17548
	17549	IrInstruction *result = ir_build_coro_promise(&ira->new_irb, instruction->base.scope,
	17550	instruction->base.source_node, coro_handle);
	17551	ir_link_new_instruction(result, &instruction->base);
	17552	result->value.type = get_pointer_to_type(ira->codegen, coro_frame_type, false);
	17553	return result->value.type;
	17554	}
	17555
	17556	static TypeTableEntry ir_analyze_instruction_coro_alloc_helper(IrAnalyze ira, IrInstructionCoroAllocHelper *instruction) {
	17557	IrInstruction *alloc_fn = instruction->alloc_fn->other;
	17558	if (type_is_invalid(alloc_fn->value.type))
	17559	return ira->codegen->builtin_types.entry_invalid;
	17560
	17561	IrInstruction *coro_size = instruction->coro_size->other;
	17562	if (type_is_invalid(coro_size->value.type))
	17563	return ira->codegen->builtin_types.entry_invalid;
	17564
	17565	IrInstruction *result = ir_build_coro_alloc_helper(&ira->new_irb, instruction->base.scope,
	17566	instruction->base.source_node, alloc_fn, coro_size);
	17567	ir_link_new_instruction(result, &instruction->base);
	17568	TypeTableEntry *u8_ptr_type = get_pointer_to_type(ira->codegen, ira->codegen->builtin_types.entry_u8, false);
	17569	result->value.type = get_maybe_type(ira->codegen, u8_ptr_type);
	17570	return result->value.type;
	17571	}
	17572
	17573	static TypeTableEntry ir_analyze_instruction_atomic_rmw(IrAnalyze ira, IrInstructionAtomicRmw *instruction) {
	17574	TypeTableEntry *operand_type = ir_resolve_type(ira, instruction->operand_type->other);
	17575	if (type_is_invalid(operand_type)) {
	17576	return ira->codegen->builtin_types.entry_invalid;
	17577	}
	17578	if (operand_type->id == TypeTableEntryIdInt) {
	17579	if (operand_type->data.integral.bit_count < 8) {
	17580	ir_add_error(ira, &instruction->base,
	17581	buf_sprintf("expected integer type 8 bits or larger, found %" PRIu32 "-bit integer type",
	17582	operand_type->data.integral.bit_count));
	17583	return ira->codegen->builtin_types.entry_invalid;
	17584	}
	17585	if (operand_type->data.integral.bit_count > ira->codegen->pointer_size_bytes * 8) {
	17586	ir_add_error(ira, &instruction->base,
	17587	buf_sprintf("expected integer type pointer size or smaller, found %" PRIu32 "-bit integer type",
	17588	operand_type->data.integral.bit_count));
	17589	return ira->codegen->builtin_types.entry_invalid;
	17590	}
	17591	if (!is_power_of_2(operand_type->data.integral.bit_count)) {
	17592	ir_add_error(ira, &instruction->base,
	17593	buf_sprintf("%" PRIu32 "-bit integer type is not a power of 2", operand_type->data.integral.bit_count));
	17594	return ira->codegen->builtin_types.entry_invalid;
	17595	}
	17596	} else if (get_codegen_ptr_type(operand_type) == nullptr) {
	17597	ir_add_error(ira, &instruction->base,
	17598	buf_sprintf("expected integer or pointer type, found '%s'", buf_ptr(&operand_type->name)));
	17599	return ira->codegen->builtin_types.entry_invalid;
	17600	}
	17601
	17602	IrInstruction *ptr_inst = instruction->ptr->other;
	17603	if (type_is_invalid(ptr_inst->value.type))
	17604	return ira->codegen->builtin_types.entry_invalid;
	17605
	17606	TypeTableEntry *ptr_type = get_pointer_to_type(ira->codegen, operand_type, false);
	17607	IrInstruction *casted_ptr = ir_implicit_cast(ira, ptr_inst, ptr_type);
	17608	if (type_is_invalid(casted_ptr->value.type))
	17609	return ira->codegen->builtin_types.entry_invalid;
	17610
	17611	AtomicRmwOp op;
	17612	if (instruction->op == nullptr) {
	17613	op = instruction->resolved_op;
	17614	} else {
	17615	if (!ir_resolve_atomic_rmw_op(ira, instruction->op->other, &op)) {
	17616	return ira->codegen->builtin_types.entry_invalid;
	17617	}
	17618	}
	17619
	17620	IrInstruction *operand = instruction->operand->other;
	17621	if (type_is_invalid(operand->value.type))
	17622	return ira->codegen->builtin_types.entry_invalid;
	17623
	17624	IrInstruction *casted_operand = ir_implicit_cast(ira, operand, operand_type);
	17625	if (type_is_invalid(casted_ptr->value.type))
	17626	return ira->codegen->builtin_types.entry_invalid;
	17627
	17628	AtomicOrder ordering;
	17629	if (instruction->ordering == nullptr) {
	17630	ordering = instruction->resolved_ordering;
	17631	} else {
	17632	if (!ir_resolve_atomic_order(ira, instruction->ordering->other, &ordering))
	17633	return ira->codegen->builtin_types.entry_invalid;
	17634	}
	17635
	17636	if (instr_is_comptime(casted_operand) && instr_is_comptime(casted_ptr) && casted_ptr->value.data.x_ptr.mut == ConstPtrMutComptimeVar)
	17637	{
	17638	zig_panic("TODO compile-time execution of atomicRmw");
	17639	}
	17640
	17641	IrInstruction *result = ir_build_atomic_rmw(&ira->new_irb, instruction->base.scope,
	17642	instruction->base.source_node, nullptr, casted_ptr, nullptr, casted_operand, nullptr,
	17643	op, ordering);
	17644	ir_link_new_instruction(result, &instruction->base);
	17645	result->value.type = operand_type;
	17646	return result->value.type;
	17647	}
	17648
	17649	static TypeTableEntry ir_analyze_instruction_promise_result_type(IrAnalyze ira, IrInstructionPromiseResultType *instruction) {
	17650	TypeTableEntry *promise_type = ir_resolve_type(ira, instruction->promise_type->other);
	17651	if (type_is_invalid(promise_type))
	17652	return ira->codegen->builtin_types.entry_invalid;
	17653
	17654	if (promise_type->id != TypeTableEntryIdPromise \|\| promise_type->data.promise.result_type == nullptr) {
	17655	ir_add_error(ira, &instruction->base, buf_sprintf("expected promise->T, found '%s'",
	17656	buf_ptr(&promise_type->name)));
	17657	return ira->codegen->builtin_types.entry_invalid;
	17658	}
	17659
	17660	ConstExprValue *out_val = ir_build_const_from(ira, &instruction->base);
	17661	out_val->data.x_type = promise_type->data.promise.result_type;
	17662	return ira->codegen->builtin_types.entry_type;
	17663	}
	17664
	17665
16482	17666	static TypeTableEntry ir_analyze_instruction_nocast(IrAnalyze ira, IrInstruction *instruction) {
16483	17667	switch (instruction->id) {
16484	17668	case IrInstructionIdInvalid:
...	...	@@ -16681,6 +17865,38 @@ static TypeTableEntry ir_analyze_instruction_nocast(IrAnalyze ira, IrInstructi
16681	17865	return ir_analyze_instruction_error_return_trace(ira, (IrInstructionErrorReturnTrace *)instruction);
16682	17866	case IrInstructionIdErrorUnion:
16683	17867	return ir_analyze_instruction_error_union(ira, (IrInstructionErrorUnion *)instruction);
	17868	case IrInstructionIdCancel:
	17869	return ir_analyze_instruction_cancel(ira, (IrInstructionCancel *)instruction);
	17870	case IrInstructionIdCoroId:
	17871	return ir_analyze_instruction_coro_id(ira, (IrInstructionCoroId *)instruction);
	17872	case IrInstructionIdCoroAlloc:
	17873	return ir_analyze_instruction_coro_alloc(ira, (IrInstructionCoroAlloc *)instruction);
	17874	case IrInstructionIdCoroSize:
	17875	return ir_analyze_instruction_coro_size(ira, (IrInstructionCoroSize *)instruction);
	17876	case IrInstructionIdCoroBegin:
	17877	return ir_analyze_instruction_coro_begin(ira, (IrInstructionCoroBegin *)instruction);
	17878	case IrInstructionIdGetImplicitAllocator:
	17879	return ir_analyze_instruction_get_implicit_allocator(ira, (IrInstructionGetImplicitAllocator *)instruction);
	17880	case IrInstructionIdCoroAllocFail:
	17881	return ir_analyze_instruction_coro_alloc_fail(ira, (IrInstructionCoroAllocFail *)instruction);
	17882	case IrInstructionIdCoroSuspend:
	17883	return ir_analyze_instruction_coro_suspend(ira, (IrInstructionCoroSuspend *)instruction);
	17884	case IrInstructionIdCoroEnd:
	17885	return ir_analyze_instruction_coro_end(ira, (IrInstructionCoroEnd *)instruction);
	17886	case IrInstructionIdCoroFree:
	17887	return ir_analyze_instruction_coro_free(ira, (IrInstructionCoroFree *)instruction);
	17888	case IrInstructionIdCoroResume:
	17889	return ir_analyze_instruction_coro_resume(ira, (IrInstructionCoroResume *)instruction);
	17890	case IrInstructionIdCoroSave:
	17891	return ir_analyze_instruction_coro_save(ira, (IrInstructionCoroSave *)instruction);
	17892	case IrInstructionIdCoroPromise:
	17893	return ir_analyze_instruction_coro_promise(ira, (IrInstructionCoroPromise *)instruction);
	17894	case IrInstructionIdCoroAllocHelper:
	17895	return ir_analyze_instruction_coro_alloc_helper(ira, (IrInstructionCoroAllocHelper *)instruction);
	17896	case IrInstructionIdAtomicRmw:
	17897	return ir_analyze_instruction_atomic_rmw(ira, (IrInstructionAtomicRmw *)instruction);
	17898	case IrInstructionIdPromiseResultType:
	17899	return ir_analyze_instruction_promise_result_type(ira, (IrInstructionPromiseResultType *)instruction);
16684	17900	}
16685	17901	zig_unreachable();
16686	17902	}
...	...	@@ -16710,7 +17926,10 @@ TypeTableEntry ir_analyze(CodeGen codegen, IrExecutable *old_exec, IrExecutabl
16710	17926	IrAnalyze *ira = allocate<IrAnalyze>(1);
16711	17927	old_exec->analysis = ira;
16712	17928	ira->codegen = codegen;
16713		ira->explicit_return_type = expected_type;
	17929
	17930	FnTableEntry *fn_entry = exec_fn_entry(old_exec);
	17931	bool is_async = fn_entry != nullptr && fn_entry->type_entry->data.fn.fn_type_id.cc == CallingConventionAsync;
	17932	ira->explicit_return_type = is_async ? get_promise_type(codegen, expected_type) : expected_type;
16714	17933
16715	17934	ira->old_irb.codegen = codegen;
16716	17935	ira->old_irb.exec = old_exec;
...	...	@@ -16794,7 +18013,16 @@ bool ir_has_side_effects(IrInstruction *instruction) {
16794	18013	case IrInstructionIdPtrTypeOf:
16795	18014	case IrInstructionIdSetAlignStack:
16796	18015	case IrInstructionIdExport:
	18016	case IrInstructionIdCancel:
	18017	case IrInstructionIdCoroId:
	18018	case IrInstructionIdCoroBegin:
	18019	case IrInstructionIdCoroAllocFail:
	18020	case IrInstructionIdCoroEnd:
	18021	case IrInstructionIdCoroResume:
	18022	case IrInstructionIdCoroSave:
	18023	case IrInstructionIdCoroAllocHelper:
16797	18024	return true;
	18025
16798	18026	case IrInstructionIdPhi:
16799	18027	case IrInstructionIdUnOp:
16800	18028	case IrInstructionIdBinOp:
...	...	@@ -16867,7 +18095,16 @@ bool ir_has_side_effects(IrInstruction *instruction) {
16867	18095	case IrInstructionIdTagType:
16868	18096	case IrInstructionIdErrorReturnTrace:
16869	18097	case IrInstructionIdErrorUnion:
	18098	case IrInstructionIdGetImplicitAllocator:
	18099	case IrInstructionIdCoroAlloc:
	18100	case IrInstructionIdCoroSize:
	18101	case IrInstructionIdCoroSuspend:
	18102	case IrInstructionIdCoroFree:
	18103	case IrInstructionIdAtomicRmw:
	18104	case IrInstructionIdCoroPromise:
	18105	case IrInstructionIdPromiseResultType:
16870	18106	return false;
	18107
16871	18108	case IrInstructionIdAsm:
16872	18109	{
16873	18110	IrInstructionAsm asm_instruction = (IrInstructionAsm )instruction;

src/ir_print.cpp+193

...	...	@@ -198,6 +198,15 @@ static void ir_print_cast(IrPrint irp, IrInstructionCast cast_instruction) {
198	198	}
199	199
200	200	static void ir_print_call(IrPrint irp, IrInstructionCall call_instruction) {
	201	if (call_instruction->is_async) {
	202	fprintf(irp->f, "async");
	203	if (call_instruction->async_allocator != nullptr) {
	204	fprintf(irp->f, "(");
	205	ir_print_other_instruction(irp, call_instruction->async_allocator);
	206	fprintf(irp->f, ")");
	207	}
	208	fprintf(irp->f, " ");
	209	}
201	210	if (call_instruction->fn_entry) {
202	211	fprintf(irp->f, "%s", buf_ptr(&call_instruction->fn_entry->symbol_name));
203	212	} else {
...	...	@@ -830,6 +839,12 @@ static void ir_print_ptr_to_int(IrPrint irp, IrInstructionPtrToInt instruction
830	839
831	840	static void ir_print_int_to_ptr(IrPrint irp, IrInstructionIntToPtr instruction) {
832	841	fprintf(irp->f, "@intToPtr(");
	842	if (instruction->dest_type == nullptr) {
	843	fprintf(irp->f, "(null)");
	844	} else {
	845	ir_print_other_instruction(irp, instruction->dest_type);
	846	}
	847	fprintf(irp->f, ",");
833	848	ir_print_other_instruction(irp, instruction->target);
834	849	fprintf(irp->f, ")");
835	850	}
...	...	@@ -1010,6 +1025,136 @@ static void ir_print_error_union(IrPrint irp, IrInstructionErrorUnion instruct
1010	1025	ir_print_other_instruction(irp, instruction->payload);
1011	1026	}
1012	1027
	1028	static void ir_print_cancel(IrPrint irp, IrInstructionCancel instruction) {
	1029	fprintf(irp->f, "cancel ");
	1030	ir_print_other_instruction(irp, instruction->target);
	1031	}
	1032
	1033	static void ir_print_get_implicit_allocator(IrPrint irp, IrInstructionGetImplicitAllocator instruction) {
	1034	fprintf(irp->f, "@getImplicitAllocator(");
	1035	switch (instruction->id) {
	1036	case ImplicitAllocatorIdArg:
	1037	fprintf(irp->f, "Arg");
	1038	break;
	1039	case ImplicitAllocatorIdLocalVar:
	1040	fprintf(irp->f, "LocalVar");
	1041	break;
	1042	}
	1043	fprintf(irp->f, ")");
	1044	}
	1045
	1046	static void ir_print_coro_id(IrPrint irp, IrInstructionCoroId instruction) {
	1047	fprintf(irp->f, "@coroId(");
	1048	ir_print_other_instruction(irp, instruction->promise_ptr);
	1049	fprintf(irp->f, ")");
	1050	}
	1051
	1052	static void ir_print_coro_alloc(IrPrint irp, IrInstructionCoroAlloc instruction) {
	1053	fprintf(irp->f, "@coroAlloc(");
	1054	ir_print_other_instruction(irp, instruction->coro_id);
	1055	fprintf(irp->f, ")");
	1056	}
	1057
	1058	static void ir_print_coro_size(IrPrint irp, IrInstructionCoroSize instruction) {
	1059	fprintf(irp->f, "@coroSize()");
	1060	}
	1061
	1062	static void ir_print_coro_begin(IrPrint irp, IrInstructionCoroBegin instruction) {
	1063	fprintf(irp->f, "@coroBegin(");
	1064	ir_print_other_instruction(irp, instruction->coro_id);
	1065	fprintf(irp->f, ",");
	1066	ir_print_other_instruction(irp, instruction->coro_mem_ptr);
	1067	fprintf(irp->f, ")");
	1068	}
	1069
	1070	static void ir_print_coro_alloc_fail(IrPrint irp, IrInstructionCoroAllocFail instruction) {
	1071	fprintf(irp->f, "@coroAllocFail(");
	1072	ir_print_other_instruction(irp, instruction->err_val);
	1073	fprintf(irp->f, ")");
	1074	}
	1075
	1076	static void ir_print_coro_suspend(IrPrint irp, IrInstructionCoroSuspend instruction) {
	1077	fprintf(irp->f, "@coroSuspend(");
	1078	if (instruction->save_point != nullptr) {
	1079	ir_print_other_instruction(irp, instruction->save_point);
	1080	} else {
	1081	fprintf(irp->f, "null");
	1082	}
	1083	fprintf(irp->f, ",");
	1084	ir_print_other_instruction(irp, instruction->is_final);
	1085	fprintf(irp->f, ")");
	1086	}
	1087
	1088	static void ir_print_coro_end(IrPrint irp, IrInstructionCoroEnd instruction) {
	1089	fprintf(irp->f, "@coroEnd()");
	1090	}
	1091
	1092	static void ir_print_coro_free(IrPrint irp, IrInstructionCoroFree instruction) {
	1093	fprintf(irp->f, "@coroFree(");
	1094	ir_print_other_instruction(irp, instruction->coro_id);
	1095	fprintf(irp->f, ",");
	1096	ir_print_other_instruction(irp, instruction->coro_handle);
	1097	fprintf(irp->f, ")");
	1098	}
	1099
	1100	static void ir_print_coro_resume(IrPrint irp, IrInstructionCoroResume instruction) {
	1101	fprintf(irp->f, "@coroResume(");
	1102	ir_print_other_instruction(irp, instruction->awaiter_handle);
	1103	fprintf(irp->f, ")");
	1104	}
	1105
	1106	static void ir_print_coro_save(IrPrint irp, IrInstructionCoroSave instruction) {
	1107	fprintf(irp->f, "@coroSave(");
	1108	ir_print_other_instruction(irp, instruction->coro_handle);
	1109	fprintf(irp->f, ")");
	1110	}
	1111
	1112	static void ir_print_coro_promise(IrPrint irp, IrInstructionCoroPromise instruction) {
	1113	fprintf(irp->f, "@coroPromise(");
	1114	ir_print_other_instruction(irp, instruction->coro_handle);
	1115	fprintf(irp->f, ")");
	1116	}
	1117
	1118	static void ir_print_promise_result_type(IrPrint irp, IrInstructionPromiseResultType instruction) {
	1119	fprintf(irp->f, "@PromiseResultType(");
	1120	ir_print_other_instruction(irp, instruction->promise_type);
	1121	fprintf(irp->f, ")");
	1122	}
	1123
	1124	static void ir_print_coro_alloc_helper(IrPrint irp, IrInstructionCoroAllocHelper instruction) {
	1125	fprintf(irp->f, "@coroAllocHelper(");
	1126	ir_print_other_instruction(irp, instruction->alloc_fn);
	1127	fprintf(irp->f, ",");
	1128	ir_print_other_instruction(irp, instruction->coro_size);
	1129	fprintf(irp->f, ")");
	1130	}
	1131
	1132	static void ir_print_atomic_rmw(IrPrint irp, IrInstructionAtomicRmw instruction) {
	1133	fprintf(irp->f, "@atomicRmw(");
	1134	if (instruction->operand_type != nullptr) {
	1135	ir_print_other_instruction(irp, instruction->operand_type);
	1136	} else {
	1137	fprintf(irp->f, "[TODO print]");
	1138	}
	1139	fprintf(irp->f, ",");
	1140	ir_print_other_instruction(irp, instruction->ptr);
	1141	fprintf(irp->f, ",");
	1142	if (instruction->op != nullptr) {
	1143	ir_print_other_instruction(irp, instruction->op);
	1144	} else {
	1145	fprintf(irp->f, "[TODO print]");
	1146	}
	1147	fprintf(irp->f, ",");
	1148	ir_print_other_instruction(irp, instruction->operand);
	1149	fprintf(irp->f, ",");
	1150	if (instruction->ordering != nullptr) {
	1151	ir_print_other_instruction(irp, instruction->ordering);
	1152	} else {
	1153	fprintf(irp->f, "[TODO print]");
	1154	}
	1155	fprintf(irp->f, ")");
	1156	}
	1157
1013	1158	static void ir_print_instruction(IrPrint irp, IrInstruction instruction) {
1014	1159	ir_print_prefix(irp, instruction);
1015	1160	switch (instruction->id) {
...	...	@@ -1330,6 +1475,54 @@ static void ir_print_instruction(IrPrint irp, IrInstruction instruction) {
1330	1475	case IrInstructionIdErrorUnion:
1331	1476	ir_print_error_union(irp, (IrInstructionErrorUnion *)instruction);
1332	1477	break;
	1478	case IrInstructionIdCancel:
	1479	ir_print_cancel(irp, (IrInstructionCancel *)instruction);
	1480	break;
	1481	case IrInstructionIdGetImplicitAllocator:
	1482	ir_print_get_implicit_allocator(irp, (IrInstructionGetImplicitAllocator *)instruction);
	1483	break;
	1484	case IrInstructionIdCoroId:
	1485	ir_print_coro_id(irp, (IrInstructionCoroId *)instruction);
	1486	break;
	1487	case IrInstructionIdCoroAlloc:
	1488	ir_print_coro_alloc(irp, (IrInstructionCoroAlloc *)instruction);
	1489	break;
	1490	case IrInstructionIdCoroSize:
	1491	ir_print_coro_size(irp, (IrInstructionCoroSize *)instruction);
	1492	break;
	1493	case IrInstructionIdCoroBegin:
	1494	ir_print_coro_begin(irp, (IrInstructionCoroBegin *)instruction);
	1495	break;
	1496	case IrInstructionIdCoroAllocFail:
	1497	ir_print_coro_alloc_fail(irp, (IrInstructionCoroAllocFail *)instruction);
	1498	break;
	1499	case IrInstructionIdCoroSuspend:
	1500	ir_print_coro_suspend(irp, (IrInstructionCoroSuspend *)instruction);
	1501	break;
	1502	case IrInstructionIdCoroEnd:
	1503	ir_print_coro_end(irp, (IrInstructionCoroEnd *)instruction);
	1504	break;
	1505	case IrInstructionIdCoroFree:
	1506	ir_print_coro_free(irp, (IrInstructionCoroFree *)instruction);
	1507	break;
	1508	case IrInstructionIdCoroResume:
	1509	ir_print_coro_resume(irp, (IrInstructionCoroResume *)instruction);
	1510	break;
	1511	case IrInstructionIdCoroSave:
	1512	ir_print_coro_save(irp, (IrInstructionCoroSave *)instruction);
	1513	break;
	1514	case IrInstructionIdCoroAllocHelper:
	1515	ir_print_coro_alloc_helper(irp, (IrInstructionCoroAllocHelper *)instruction);
	1516	break;
	1517	case IrInstructionIdAtomicRmw:
	1518	ir_print_atomic_rmw(irp, (IrInstructionAtomicRmw *)instruction);
	1519	break;
	1520	case IrInstructionIdCoroPromise:
	1521	ir_print_coro_promise(irp, (IrInstructionCoroPromise *)instruction);
	1522	break;
	1523	case IrInstructionIdPromiseResultType:
	1524	ir_print_promise_result_type(irp, (IrInstructionPromiseResultType *)instruction);
	1525	break;
1333	1526	}
1334	1527	fprintf(irp->f, "\n");
1335	1528	}

src/parser.cpp+170-9

...	...	@@ -221,6 +221,7 @@ static AstNode ast_parse_grouped_expr(ParseContext pc, size_t *token_index, bo
221	221	static AstNode ast_parse_container_decl(ParseContext pc, size_t *token_index, bool mandatory);
222	222	static AstNode ast_parse_primary_expr(ParseContext pc, size_t *token_index, bool mandatory);
223	223	static AstNode ast_parse_try_expr(ParseContext pc, size_t *token_index);
	224	static AstNode ast_parse_await_expr(ParseContext pc, size_t *token_index);
224	225	static AstNode ast_parse_symbol(ParseContext pc, size_t *token_index);
225	226
226	227	static void ast_expect_token(ParseContext pc, Token token, TokenId token_id) {
...	...	@@ -650,6 +651,41 @@ static AstNode ast_parse_asm_expr(ParseContext pc, size_t *token_index, bool m
650	651	return node;
651	652	}
652	653
	654	/*
	655	SuspendExpression(body) = "suspend" "\|" Symbol "\|" body
	656	*/
	657	static AstNode ast_parse_suspend_block(ParseContext pc, size_t *token_index, bool mandatory) {
	658	size_t orig_token_index = *token_index;
	659
	660	Token suspend_token = &pc->tokens->at(token_index);
	661	if (suspend_token->id == TokenIdKeywordSuspend) {
	662	*token_index += 1;
	663	} else if (mandatory) {
	664	ast_expect_token(pc, suspend_token, TokenIdKeywordSuspend);
	665	zig_unreachable();
	666	} else {
	667	return nullptr;
	668	}
	669
	670	Token bar_token = &pc->tokens->at(token_index);
	671	if (bar_token->id == TokenIdBinOr) {
	672	*token_index += 1;
	673	} else if (mandatory) {
	674	ast_expect_token(pc, suspend_token, TokenIdBinOr);
	675	zig_unreachable();
	676	} else {
	677	*token_index = orig_token_index;
	678	return nullptr;
	679	}
	680
	681	AstNode *node = ast_create_node(pc, NodeTypeSuspend, suspend_token);
	682	node->data.suspend.promise_symbol = ast_parse_symbol(pc, token_index);
	683	ast_eat_token(pc, token_index, TokenIdBinOr);
	684	node->data.suspend.block = ast_parse_block(pc, token_index, true);
	685
	686	return node;
	687	}
	688
653	689	/*
654	690	CompTimeExpression(body) = "comptime" body
655	691	*/
...	...	@@ -674,7 +710,7 @@ static AstNode ast_parse_comptime_expr(ParseContext pc, size_t *token_index, b
674	710
675	711	/*
676	712	PrimaryExpression = Integer \| Float \| String \| CharLiteral \| KeywordLiteral \| GroupedExpression \| BlockExpression(BlockOrExpression) \| Symbol \| ("@" Symbol FnCallExpression) \| ArrayType \| FnProto \| AsmExpression \| ContainerDecl \| ("continue" option(":" Symbol)) \| ErrorSetDecl
677		KeywordLiteral = "true" \| "false" \| "null" \| "undefined" \| "error" \| "this" \| "unreachable"
	713	KeywordLiteral = "true" \| "false" \| "null" \| "undefined" \| "error" \| "this" \| "unreachable" \| "suspend"
678	714	ErrorSetDecl = "error" "{" list(Symbol, ",") "}"
679	715	*/
680	716	static AstNode ast_parse_primary_expr(ParseContext pc, size_t *token_index, bool mandatory) {
...	...	@@ -738,6 +774,10 @@ static AstNode ast_parse_primary_expr(ParseContext pc, size_t *token_index, bo
738	774	AstNode *node = ast_create_node(pc, NodeTypeUnreachable, token);
739	775	*token_index += 1;
740	776	return node;
	777	} else if (token->id == TokenIdKeywordSuspend) {
	778	AstNode *node = ast_create_node(pc, NodeTypeSuspend, token);
	779	*token_index += 1;
	780	return node;
741	781	} else if (token->id == TokenIdKeywordError) {
742	782	Token next_token = &pc->tokens->at(token_index + 1);
743	783	if (next_token->id == TokenIdLBrace) {
...	...	@@ -920,7 +960,7 @@ static AstNode ast_parse_curly_suffix_expr(ParseContext pc, size_t *token_inde
920	960	}
921	961
922	962	/*
923		SuffixOpExpression = PrimaryExpression option(FnCallExpression \| ArrayAccessExpression \| FieldAccessExpression \| SliceExpression)
	963	SuffixOpExpression = ("async" option("(" Expression ")") PrimaryExpression FnCallExpression) \| PrimaryExpression option(FnCallExpression \| ArrayAccessExpression \| FieldAccessExpression \| SliceExpression)
924	964	FnCallExpression : token(LParen) list(Expression, token(Comma)) token(RParen)
925	965	ArrayAccessExpression : token(LBracket) Expression token(RBracket)
926	966	SliceExpression = "[" Expression ".." option(Expression) "]"
...	...	@@ -928,9 +968,34 @@ FieldAccessExpression : token(Dot) token(Symbol)
928	968	StructLiteralField : token(Dot) token(Symbol) token(Eq) Expression
929	969	*/
930	970	static AstNode ast_parse_suffix_op_expr(ParseContext pc, size_t *token_index, bool mandatory) {
931		AstNode *primary_expr = ast_parse_primary_expr(pc, token_index, mandatory);
932		if (!primary_expr)
933		return nullptr;
	971	AstNode *primary_expr;
	972
	973	Token async_token = &pc->tokens->at(token_index);
	974	if (async_token->id == TokenIdKeywordAsync) {
	975	*token_index += 1;
	976
	977	AstNode *allocator_expr_node = nullptr;
	978	Token async_lparen_tok = &pc->tokens->at(token_index);
	979	if (async_lparen_tok->id == TokenIdLParen) {
	980	*token_index += 1;
	981	allocator_expr_node = ast_parse_expression(pc, token_index, true);
	982	ast_eat_token(pc, token_index, TokenIdRParen);
	983	}
	984
	985	AstNode *fn_ref_expr_node = ast_parse_primary_expr(pc, token_index, true);
	986	Token *lparen_tok = ast_eat_token(pc, token_index, TokenIdLParen);
	987	AstNode *node = ast_create_node(pc, NodeTypeFnCallExpr, lparen_tok);
	988	node->data.fn_call_expr.is_async = true;
	989	node->data.fn_call_expr.async_allocator = allocator_expr_node;
	990	node->data.fn_call_expr.fn_ref_expr = fn_ref_expr_node;
	991	ast_parse_fn_call_param_list(pc, token_index, &node->data.fn_call_expr.params);
	992
	993	primary_expr = node;
	994	} else {
	995	primary_expr = ast_parse_primary_expr(pc, token_index, mandatory);
	996	if (!primary_expr)
	997	return nullptr;
	998	}
934	999
935	1000	while (true) {
936	1001	Token first_token = &pc->tokens->at(token_index);
...	...	@@ -1042,7 +1107,7 @@ static AstNode ast_parse_addr_of(ParseContext pc, size_t *token_index) {
1042	1107
1043	1108	/*
1044	1109	PrefixOpExpression = PrefixOp ErrorSetExpr \| SuffixOpExpression
1045		PrefixOp = "!" \| "-" \| "~" \| "*" \| ("&" option("align" "(" Expression option(":" Integer ":" Integer) ")" ) option("const") option("volatile")) \| "?" \| "??" \| "-%" \| "try"
	1110	PrefixOp = "!" \| "-" \| "~" \| "*" \| ("&" option("align" "(" Expression option(":" Integer ":" Integer) ")" ) option("const") option("volatile")) \| "?" \| "??" \| "-%" \| "try" \| "await"
1046	1111	*/
1047	1112	static AstNode ast_parse_prefix_op_expr(ParseContext pc, size_t *token_index, bool mandatory) {
1048	1113	Token token = &pc->tokens->at(token_index);
...	...	@@ -1052,6 +1117,9 @@ static AstNode ast_parse_prefix_op_expr(ParseContext pc, size_t *token_index,
1052	1117	if (token->id == TokenIdKeywordTry) {
1053	1118	return ast_parse_try_expr(pc, token_index);
1054	1119	}
	1120	if (token->id == TokenIdKeywordAwait) {
	1121	return ast_parse_await_expr(pc, token_index);
	1122	}
1055	1123	PrefixOp prefix_op = tok_to_prefix_op(token);
1056	1124	if (prefix_op == PrefixOpInvalid) {
1057	1125	return ast_parse_suffix_op_expr(pc, token_index, mandatory);
...	...	@@ -1510,6 +1578,23 @@ static AstNode ast_parse_try_expr(ParseContext pc, size_t *token_index) {
1510	1578	return node;
1511	1579	}
1512	1580
	1581	/*
	1582	AwaitExpression : "await" Expression
	1583	*/
	1584	static AstNode ast_parse_await_expr(ParseContext pc, size_t *token_index) {
	1585	Token token = &pc->tokens->at(token_index);
	1586
	1587	if (token->id != TokenIdKeywordAwait) {
	1588	return nullptr;
	1589	}
	1590	*token_index += 1;
	1591
	1592	AstNode *node = ast_create_node(pc, NodeTypeAwaitExpr, token);
	1593	node->data.await_expr.expr = ast_parse_expression(pc, token_index, true);
	1594
	1595	return node;
	1596	}
	1597
1513	1598	/*
1514	1599	BreakExpression = "break" option(":" Symbol) option(Expression)
1515	1600	*/
...	...	@@ -1535,6 +1620,42 @@ static AstNode ast_parse_break_expr(ParseContext pc, size_t *token_index) {
1535	1620	return node;
1536	1621	}
1537	1622
	1623	/*
	1624	CancelExpression = "cancel" Expression;
	1625	*/
	1626	static AstNode ast_parse_cancel_expr(ParseContext pc, size_t *token_index) {
	1627	Token token = &pc->tokens->at(token_index);
	1628
	1629	if (token->id != TokenIdKeywordCancel) {
	1630	return nullptr;
	1631	}
	1632	*token_index += 1;
	1633
	1634	AstNode *node = ast_create_node(pc, NodeTypeCancel, token);
	1635
	1636	node->data.cancel_expr.expr = ast_parse_expression(pc, token_index, false);
	1637
	1638	return node;
	1639	}
	1640
	1641	/*
	1642	ResumeExpression = "resume" Expression;
	1643	*/
	1644	static AstNode ast_parse_resume_expr(ParseContext pc, size_t *token_index) {
	1645	Token token = &pc->tokens->at(token_index);
	1646
	1647	if (token->id != TokenIdKeywordResume) {
	1648	return nullptr;
	1649	}
	1650	*token_index += 1;
	1651
	1652	AstNode *node = ast_create_node(pc, NodeTypeResume, token);
	1653
	1654	node->data.resume_expr.expr = ast_parse_expression(pc, token_index, false);
	1655
	1656	return node;
	1657	}
	1658
1538	1659	/*
1539	1660	Defer(body) = ("defer" \| "errdefer") body
1540	1661	*/
...	...	@@ -2001,7 +2122,7 @@ static AstNode ast_parse_switch_expr(ParseContext pc, size_t *token_index, boo
2001	2122	}
2002	2123
2003	2124	/*
2004		BlockExpression(body) = Block \| IfExpression(body) \| TryExpression(body) \| TestExpression(body) \| WhileExpression(body) \| ForExpression(body) \| SwitchExpression \| CompTimeExpression(body)
	2125	BlockExpression(body) = Block \| IfExpression(body) \| IfErrorExpression(body) \| TestExpression(body) \| WhileExpression(body) \| ForExpression(body) \| SwitchExpression \| CompTimeExpression(body) \| SuspendExpression(body)
2005	2126	*/
2006	2127	static AstNode ast_parse_block_expr(ParseContext pc, size_t *token_index, bool mandatory) {
2007	2128	Token token = &pc->tokens->at(token_index);
...	...	@@ -2030,6 +2151,10 @@ static AstNode ast_parse_block_expr(ParseContext pc, size_t *token_index, bool
2030	2151	if (comptime_node)
2031	2152	return comptime_node;
2032	2153
	2154	AstNode *suspend_node = ast_parse_suspend_block(pc, token_index, false);
	2155	if (suspend_node)
	2156	return suspend_node;
	2157
2033	2158	if (mandatory)
2034	2159	ast_invalid_token_error(pc, token);
2035	2160
...	...	@@ -2159,7 +2284,7 @@ static AstNode ast_parse_block_or_expression(ParseContext pc, size_t *token_in
2159	2284	}
2160	2285
2161	2286	/*
2162		Expression = TryExpression \| ReturnExpression \| BreakExpression \| AssignmentExpression
	2287	Expression = TryExpression \| ReturnExpression \| BreakExpression \| AssignmentExpression \| CancelExpression \| ResumeExpression
2163	2288	*/
2164	2289	static AstNode ast_parse_expression(ParseContext pc, size_t *token_index, bool mandatory) {
2165	2290	Token token = &pc->tokens->at(token_index);
...	...	@@ -2176,6 +2301,14 @@ static AstNode ast_parse_expression(ParseContext pc, size_t *token_index, bool
2176	2301	if (break_expr)
2177	2302	return break_expr;
2178	2303
	2304	AstNode *cancel_expr = ast_parse_cancel_expr(pc, token_index);
	2305	if (cancel_expr)
	2306	return cancel_expr;
	2307
	2308	AstNode *resume_expr = ast_parse_resume_expr(pc, token_index);
	2309	if (resume_expr)
	2310	return resume_expr;
	2311
2179	2312	AstNode *ass_expr = ast_parse_ass_expr(pc, token_index, false);
2180	2313	if (ass_expr)
2181	2314	return ass_expr;
...	...	@@ -2208,6 +2341,8 @@ static bool statement_terminates_without_semicolon(AstNode *node) {
2208	2341	return node->data.comptime_expr.expr->type == NodeTypeBlock;
2209	2342	case NodeTypeDefer:
2210	2343	return node->data.defer.expr->type == NodeTypeBlock;
	2344	case NodeTypeSuspend:
	2345	return node->data.suspend.block != nullptr && node->data.suspend.block->type == NodeTypeBlock;
2211	2346	case NodeTypeSwitchExpr:
2212	2347	case NodeTypeBlock:
2213	2348	return true;
...	...	@@ -2286,7 +2421,7 @@ static AstNode ast_parse_block(ParseContext pc, size_t *token_index, bool mand
2286	2421	}
2287	2422
2288	2423	/*
2289		FnProto = option("nakedcc" \| "stdcallcc" \| "extern") "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
	2424	FnProto = option("nakedcc" \| "stdcallcc" \| "extern" \| ("async" option("(" Expression ")"))) "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
2290	2425	*/
2291	2426	static AstNode ast_parse_fn_proto(ParseContext pc, size_t *token_index, bool mandatory, VisibMod visib_mod) {
2292	2427	Token first_token = &pc->tokens->at(token_index);
...	...	@@ -2294,10 +2429,20 @@ static AstNode ast_parse_fn_proto(ParseContext pc, size_t *token_index, bool m
2294	2429
2295	2430	CallingConvention cc;
2296	2431	bool is_extern = false;
	2432	AstNode *async_allocator_type_node = nullptr;
2297	2433	if (first_token->id == TokenIdKeywordNakedCC) {
2298	2434	*token_index += 1;
2299	2435	fn_token = ast_eat_token(pc, token_index, TokenIdKeywordFn);
2300	2436	cc = CallingConventionNaked;
	2437	} else if (first_token->id == TokenIdKeywordAsync) {
	2438	*token_index += 1;
	2439	Token next_token = &pc->tokens->at(token_index);
	2440	if (next_token->id == TokenIdLParen) {
	2441	async_allocator_type_node = ast_parse_type_expr(pc, token_index, true);
	2442	ast_eat_token(pc, token_index, TokenIdRParen);
	2443	}
	2444	fn_token = ast_eat_token(pc, token_index, TokenIdKeywordFn);
	2445	cc = CallingConventionAsync;
2301	2446	} else if (first_token->id == TokenIdKeywordStdcallCC) {
2302	2447	*token_index += 1;
2303	2448	fn_token = ast_eat_token(pc, token_index, TokenIdKeywordFn);
...	...	@@ -2332,6 +2477,7 @@ static AstNode ast_parse_fn_proto(ParseContext pc, size_t *token_index, bool m
2332	2477	node->data.fn_proto.visib_mod = visib_mod;
2333	2478	node->data.fn_proto.cc = cc;
2334	2479	node->data.fn_proto.is_extern = is_extern;
	2480	node->data.fn_proto.async_allocator_type = async_allocator_type_node;
2335	2481
2336	2482	Token fn_name = &pc->tokens->at(token_index);
2337	2483
...	...	@@ -2747,6 +2893,7 @@ void ast_visit_node_children(AstNode node, void (visit)(AstNode *, void cont
2747	2893	visit_node_list(&node->data.fn_proto.params, visit, context);
2748	2894	visit_field(&node->data.fn_proto.align_expr, visit, context);
2749	2895	visit_field(&node->data.fn_proto.section_expr, visit, context);
	2896	visit_field(&node->data.fn_proto.async_allocator_type, visit, context);
2750	2897	break;
2751	2898	case NodeTypeFnDef:
2752	2899	visit_field(&node->data.fn_def.fn_proto, visit, context);
...	...	@@ -2809,6 +2956,7 @@ void ast_visit_node_children(AstNode node, void (visit)(AstNode *, void cont
2809	2956	case NodeTypeFnCallExpr:
2810	2957	visit_field(&node->data.fn_call_expr.fn_ref_expr, visit, context);
2811	2958	visit_node_list(&node->data.fn_call_expr.params, visit, context);
	2959	visit_field(&node->data.fn_call_expr.async_allocator, visit, context);
2812	2960	break;
2813	2961	case NodeTypeArrayAccessExpr:
2814	2962	visit_field(&node->data.array_access_expr.array_ref_expr, visit, context);
...	...	@@ -2931,5 +3079,18 @@ void ast_visit_node_children(AstNode node, void (visit)(AstNode *, void cont
2931	3079	case NodeTypeErrorSetDecl:
2932	3080	visit_node_list(&node->data.err_set_decl.decls, visit, context);
2933	3081	break;
	3082	case NodeTypeCancel:
	3083	visit_field(&node->data.cancel_expr.expr, visit, context);
	3084	break;
	3085	case NodeTypeResume:
	3086	visit_field(&node->data.resume_expr.expr, visit, context);
	3087	break;
	3088	case NodeTypeAwaitExpr:
	3089	visit_field(&node->data.await_expr.expr, visit, context);
	3090	break;
	3091	case NodeTypeSuspend:
	3092	visit_field(&node->data.suspend.promise_symbol, visit, context);
	3093	visit_field(&node->data.suspend.block, visit, context);
	3094	break;
2934	3095	}
2935	3096	}

src/tokenizer.cpp+10

...	...	@@ -110,7 +110,10 @@ static const struct ZigKeyword zig_keywords[] = {
110	110	{"align", TokenIdKeywordAlign},
111	111	{"and", TokenIdKeywordAnd},
112	112	{"asm", TokenIdKeywordAsm},
	113	{"async", TokenIdKeywordAsync},
	114	{"await", TokenIdKeywordAwait},
113	115	{"break", TokenIdKeywordBreak},
	116	{"cancel", TokenIdKeywordCancel},
114	117	{"catch", TokenIdKeywordCatch},
115	118	{"comptime", TokenIdKeywordCompTime},
116	119	{"const", TokenIdKeywordConst},
...	...	@@ -133,10 +136,12 @@ static const struct ZigKeyword zig_keywords[] = {
133	136	{"or", TokenIdKeywordOr},
134	137	{"packed", TokenIdKeywordPacked},
135	138	{"pub", TokenIdKeywordPub},
	139	{"resume", TokenIdKeywordResume},
136	140	{"return", TokenIdKeywordReturn},
137	141	{"section", TokenIdKeywordSection},
138	142	{"stdcallcc", TokenIdKeywordStdcallCC},
139	143	{"struct", TokenIdKeywordStruct},
	144	{"suspend", TokenIdKeywordSuspend},
140	145	{"switch", TokenIdKeywordSwitch},
141	146	{"test", TokenIdKeywordTest},
142	147	{"this", TokenIdKeywordThis},
...	...	@@ -1523,6 +1528,11 @@ const char * token_name(TokenId id) {
1523	1528	case TokenIdFatArrow: return "=>";
1524	1529	case TokenIdFloatLiteral: return "FloatLiteral";
1525	1530	case TokenIdIntLiteral: return "IntLiteral";
	1531	case TokenIdKeywordAsync: return "async";
	1532	case TokenIdKeywordAwait: return "await";
	1533	case TokenIdKeywordResume: return "resume";
	1534	case TokenIdKeywordSuspend: return "suspend";
	1535	case TokenIdKeywordCancel: return "cancel";
1526	1536	case TokenIdKeywordAlign: return "align";
1527	1537	case TokenIdKeywordAnd: return "and";
1528	1538	case TokenIdKeywordAsm: return "asm";

src/tokenizer.hpp+5

...	...	@@ -51,7 +51,10 @@ enum TokenId {
51	51	TokenIdKeywordAlign,
52	52	TokenIdKeywordAnd,
53	53	TokenIdKeywordAsm,
	54	TokenIdKeywordAsync,
	55	TokenIdKeywordAwait,
54	56	TokenIdKeywordBreak,
	57	TokenIdKeywordCancel,
55	58	TokenIdKeywordCatch,
56	59	TokenIdKeywordCompTime,
57	60	TokenIdKeywordConst,
...	...	@@ -74,10 +77,12 @@ enum TokenId {
74	77	TokenIdKeywordOr,
75	78	TokenIdKeywordPacked,
76	79	TokenIdKeywordPub,
	80	TokenIdKeywordResume,
77	81	TokenIdKeywordReturn,
78	82	TokenIdKeywordSection,
79	83	TokenIdKeywordStdcallCC,
80	84	TokenIdKeywordStruct,
	85	TokenIdKeywordSuspend,
81	86	TokenIdKeywordSwitch,
82	87	TokenIdKeywordTest,
83	88	TokenIdKeywordThis,

src/zig_llvm.cpp+6

...	...	@@ -32,6 +32,7 @@
32	32	#include <llvm/Support/TargetParser.h>
33	33	#include <llvm/Support/raw_ostream.h>
34	34	#include <llvm/Target/TargetMachine.h>
	35	#include <llvm/Transforms/Coroutines.h>
35	36	#include <llvm/Transforms/IPO.h>
36	37	#include <llvm/Transforms/IPO/PassManagerBuilder.h>
37	38	#include <llvm/Transforms/IPO/AlwaysInliner.h>
...	...	@@ -129,6 +130,8 @@ bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMM
129	130	PMBuilder->Inliner = createFunctionInliningPass(PMBuilder->OptLevel, PMBuilder->SizeLevel, false);
130	131	}
131	132
	133	addCoroutinePassesToExtensionPoints(*PMBuilder);
	134
132	135	// Set up the per-function pass manager.
133	136	legacy::FunctionPassManager FPM = legacy::FunctionPassManager(module);
134	137	auto tliwp = new(std::nothrow) TargetLibraryInfoWrapperPass(tlii);
...	...	@@ -182,6 +185,9 @@ bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMM
182	185	return false;
183	186	}
184	187
	188	ZIG_EXTERN_C LLVMTypeRef ZigLLVMTokenTypeInContext(LLVMContextRef context_ref) {
	189	return wrap(Type::getTokenTy(*unwrap(context_ref)));
	190	}
185	191
186	192	LLVMValueRef ZigLLVMBuildCall(LLVMBuilderRef B, LLVMValueRef Fn, LLVMValueRef *Args,
187	193	unsigned NumArgs, unsigned CC, ZigLLVM_FnInline fn_inline, const char *Name)

src/zig_llvm.h+2

...	...	@@ -54,6 +54,8 @@ enum ZigLLVM_EmitOutputType {
54	54	ZIG_EXTERN_C bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMModuleRef module_ref,
55	55	const char filename, enum ZigLLVM_EmitOutputType output_type, char *error_message, bool is_debug);
56	56
	57	ZIG_EXTERN_C LLVMTypeRef ZigLLVMTokenTypeInContext(LLVMContextRef context_ref);
	58
57	59	enum ZigLLVM_FnInline {
58	60	ZigLLVM_FnInlineAuto,
59	61	ZigLLVM_FnInlineAlways,

std/debug/index.zig+8-10

...	...	@@ -98,21 +98,18 @@ pub fn assertOrPanic(ok: bool) void {
98	98	}
99	99	}
100	100
101		var panicking = false;
	101	var panicking: u8 = 0; // TODO make this a bool
102	102	/// This is the default panic implementation.
103	103	pub fn panic(comptime format: []const u8, args: ...) noreturn {
104		// TODO an intrinsic that labels this as unlikely to be reached
	104	@setCold(true);
105	105
106		// TODO
107		// if (@atomicRmw(AtomicOp.XChg, &panicking, true, AtomicOrder.SeqCst)) { }
108		if (panicking) {
	106	if (@atomicRmw(u8, &panicking, builtin.AtomicRmwOp.Xchg, 1, builtin.AtomicOrder.SeqCst) == 1) {
109	107	// Panicked during a panic.
	108
110	109	// TODO detect if a different thread caused the panic, because in that case
111	110	// we would want to return here instead of calling abort, so that the thread
112	111	// which first called panic can finish printing a stack trace.
113	112	os.abort();
114		} else {
115		panicking = true;
116	113	}
117	114
118	115	const stderr = getStderrStream() catch os.abort();
...	...	@@ -123,10 +120,11 @@ pub fn panic(comptime format: []const u8, args: ...) noreturn {
123	120	}
124	121
125	122	pub fn panicWithTrace(trace: &const builtin.StackTrace, comptime format: []const u8, args: ...) noreturn {
126		if (panicking) {
	123	@setCold(true);
	124
	125	if (@atomicRmw(u8, &panicking, builtin.AtomicRmwOp.Xchg, 1, builtin.AtomicOrder.SeqCst) == 1) {
	126	// See TODO in above function
127	127	os.abort();
128		} else {
129		panicking = true;
130	128	}
131	129	const stderr = getStderrStream() catch os.abort();
132	130	stderr.print(format ++ "\n", args) catch os.abort();

std/hash_map.zig+1-1

...	...	@@ -235,7 +235,7 @@ pub fn HashMap(comptime K: type, comptime V: type,
235	235	};
236	236	}
237	237
238		test "basicHashMapTest" {
	238	test "basic hash map usage" {
239	239	var map = HashMap(i32, i32, hash_i32, eql_i32).init(debug.global_allocator);
240	240	defer map.deinit();
241	241

test/behavior.zig+14-1

...	...	@@ -1,3 +1,5 @@
	1	const builtin = @import("builtin");
	2
1	3	comptime {
2	4	_ = @import("cases/align.zig");
3	5	_ = @import("cases/alignof.zig");
...	...	@@ -34,8 +36,8 @@ comptime {
34	36	_ = @import("cases/sizeof_and_typeof.zig");
35	37	_ = @import("cases/slice.zig");
36	38	_ = @import("cases/struct.zig");
37		_ = @import("cases/struct_contains_slice_of_itself.zig");
38	39	_ = @import("cases/struct_contains_null_ptr_itself.zig");
	40	_ = @import("cases/struct_contains_slice_of_itself.zig");
39	41	_ = @import("cases/switch.zig");
40	42	_ = @import("cases/switch_prong_err_enum.zig");
41	43	_ = @import("cases/switch_prong_implicit_cast.zig");
...	...	@@ -47,4 +49,15 @@ comptime {
47	49	_ = @import("cases/var_args.zig");
48	50	_ = @import("cases/void.zig");
49	51	_ = @import("cases/while.zig");
	52
	53
	54	// LLVM 5.0.1, 6.0.0, and trunk crash when attempting to optimize coroutine code.
	55	// So, Zig does not support ReleaseFast or ReleaseSafe for coroutines yet.
	56	// Luckily, Clang users are running into the same crashes, so folks from the LLVM
	57	// community are working on fixes. If we're really lucky they'll be fixed in 6.0.1.
	58	// Otherwise we can hope for 7.0.0.
	59	if (builtin.mode == builtin.Mode.Debug) {
	60	_ = @import("cases/coroutines.zig");
	61	}
	62
50	63	}

test/cases/atomics.zig+14-1

...	...	@@ -1,5 +1,7 @@
1	1	const assert = @import("std").debug.assert;
2		const AtomicOrder = @import("builtin").AtomicOrder;
	2	const builtin = @import("builtin");
	3	const AtomicRmwOp = builtin.AtomicRmwOp;
	4	const AtomicOrder = builtin.AtomicOrder;
3	5
4	6	test "cmpxchg" {
5	7	var x: i32 = 1234;
...	...	@@ -12,3 +14,14 @@ test "fence" {
12	14	@fence(AtomicOrder.SeqCst);
13	15	x = 5678;
14	16	}
	17
	18	test "atomicrmw" {
	19	var data: u8 = 200;
	20	testAtomicRmw(&data);
	21	assert(data == 42);
	22	}
	23
	24	fn testAtomicRmw(ptr: &u8) void {
	25	const prev_value = @atomicRmw(u8, ptr, AtomicRmwOp.Xchg, 42, AtomicOrder.SeqCst);
	26	assert(prev_value == 200);
	27	}

test/cases/coroutines.zig created+132

...	...	@@ -0,0 +1,132 @@
	1	const std = @import("std");
	2	const assert = std.debug.assert;
	3
	4	var x: i32 = 1;
	5
	6	test "create a coroutine and cancel it" {
	7	const p = try async(std.debug.global_allocator) simpleAsyncFn();
	8	cancel p;
	9	assert(x == 2);
	10	}
	11
	12	async fn simpleAsyncFn() void {
	13	x += 1;
	14	suspend;
	15	x += 1;
	16	}
	17
	18	test "coroutine suspend, resume, cancel" {
	19	seq('a');
	20	const p = try async(std.debug.global_allocator) testAsyncSeq();
	21	seq('c');
	22	resume p;
	23	seq('f');
	24	cancel p;
	25	seq('g');
	26
	27	assert(std.mem.eql(u8, points, "abcdefg"));
	28	}
	29
	30	async fn testAsyncSeq() void {
	31	defer seq('e');
	32
	33	seq('b');
	34	suspend;
	35	seq('d');
	36	}
	37	var points = []u8{0} ** "abcdefg".len;
	38	var index: usize = 0;
	39
	40	fn seq(c: u8) void {
	41	points[index] = c;
	42	index += 1;
	43	}
	44
	45	test "coroutine suspend with block" {
	46	const p = try async(std.debug.global_allocator) testSuspendBlock();
	47	std.debug.assert(!result);
	48	resume a_promise;
	49	std.debug.assert(result);
	50	cancel p;
	51	}
	52
	53	var a_promise: promise = undefined;
	54	var result = false;
	55
	56	async fn testSuspendBlock() void {
	57	suspend \|p\| {
	58	a_promise = p;
	59	}
	60	result = true;
	61	}
	62
	63	var await_a_promise: promise = undefined;
	64	var await_final_result: i32 = 0;
	65
	66	test "coroutine await" {
	67	await_seq('a');
	68	const p = async(std.debug.global_allocator) await_amain() catch unreachable;
	69	await_seq('f');
	70	resume await_a_promise;
	71	await_seq('i');
	72	assert(await_final_result == 1234);
	73	assert(std.mem.eql(u8, await_points, "abcdefghi"));
	74	}
	75
	76	async fn await_amain() void {
	77	await_seq('b');
	78	const p = async await_another() catch unreachable;
	79	await_seq('e');
	80	await_final_result = await p;
	81	await_seq('h');
	82	}
	83
	84	async fn await_another() i32 {
	85	await_seq('c');
	86	suspend \|p\| {
	87	await_seq('d');
	88	await_a_promise = p;
	89	}
	90	await_seq('g');
	91	return 1234;
	92	}
	93
	94	var await_points = []u8{0} ** "abcdefghi".len;
	95	var await_seq_index: usize = 0;
	96
	97	fn await_seq(c: u8) void {
	98	await_points[await_seq_index] = c;
	99	await_seq_index += 1;
	100	}
	101
	102
	103	var early_final_result: i32 = 0;
	104
	105	test "coroutine await early return" {
	106	early_seq('a');
	107	const p = async(std.debug.global_allocator) early_amain() catch unreachable;
	108	early_seq('f');
	109	assert(early_final_result == 1234);
	110	assert(std.mem.eql(u8, early_points, "abcdef"));
	111	}
	112
	113	async fn early_amain() void {
	114	early_seq('b');
	115	const p = async early_another() catch unreachable;
	116	early_seq('d');
	117	early_final_result = await p;
	118	early_seq('e');
	119	}
	120
	121	async fn early_another() i32 {
	122	early_seq('c');
	123	return 1234;
	124	}
	125
	126	var early_points = []u8{0} ** "abcdef".len;
	127	var early_seq_index: usize = 0;
	128
	129	fn early_seq(c: u8) void {
	130	early_points[early_seq_index] = c;
	131	early_seq_index += 1;
	132	}