| ... | ... | @@ -30,10 +30,9 @@ const BigInt = std.math.big.int; |
| 30 | 30 | |
| 31 | 31 | pub const CValue = union(enum) { |
| 32 | 32 | none: void, |
| 33 | | /// Index into local_names |
| 34 | | local: usize, |
| 35 | | /// Index into local_names, but take the address. |
| 36 | | local_ref: usize, |
| 33 | local: LocalIndex, |
| 34 | /// Address of a local. |
| 35 | local_ref: LocalIndex, |
| 37 | 36 | /// A constant instruction, to be rendered inline. |
| 38 | 37 | constant: Air.Inst.Ref, |
| 39 | 38 | /// Index into the parameters |
| ... | ... | @@ -70,6 +69,15 @@ pub const TypedefMap = std.ArrayHashMap( |
| 70 | 69 | true, |
| 71 | 70 | ); |
| 72 | 71 | |
| 72 | const Local = struct { |
| 73 | ty: Type, |
| 74 | alignment: u32, |
| 75 | }; |
| 76 | |
| 77 | const LocalIndex = u16; |
| 78 | const LocalsList = std.ArrayListUnmanaged(LocalIndex); |
| 79 | const LocalsMap = std.ArrayHashMapUnmanaged(Type, LocalsList, Type.HashContext32, true); |
| 80 | |
| 73 | 81 | const FormatTypeAsCIdentContext = struct { |
| 74 | 82 | ty: Type, |
| 75 | 83 | mod: *Module, |
| ... | ... | @@ -251,10 +259,23 @@ pub const Function = struct { |
| 251 | 259 | value_map: CValueMap, |
| 252 | 260 | blocks: std.AutoHashMapUnmanaged(Air.Inst.Index, BlockData) = .{}, |
| 253 | 261 | next_arg_index: usize = 0, |
| 254 | | next_local_index: usize = 0, |
| 255 | 262 | next_block_index: usize = 0, |
| 256 | 263 | object: Object, |
| 257 | 264 | func: *Module.Fn, |
| 265 | /// All the locals, to be emitted at the top of the function. |
| 266 | locals: std.ArrayListUnmanaged(Local) = .{}, |
| 267 | /// Which locals are available for reuse, based on Type. |
| 268 | free_locals: LocalsMap = .{}, |
| 269 | /// Locals which will not be freed by Liveness. This is used after a |
| 270 | /// Function body is lowered in order to make `free_locals` have 100% of |
| 271 | /// the locals within so that it can be used to render the block of |
| 272 | /// variable declarations at the top of a function, sorted descending by |
| 273 | /// type alignment. |
| 274 | allocs: std.AutoArrayHashMapUnmanaged(LocalIndex, void) = .{}, |
| 275 | |
| 276 | fn tyHashCtx(f: Function) Type.HashContext32 { |
| 277 | return .{ .mod = f.object.dg.module }; |
| 278 | } |
| 258 | 279 | |
| 259 | 280 | fn resolveInst(f: *Function, inst: Air.Inst.Ref) !CValue { |
| 260 | 281 | const gop = try f.value_map.getOrPut(inst); |
| ... | ... | @@ -265,9 +286,10 @@ pub const Function = struct { |
| 265 | 286 | |
| 266 | 287 | const result = if (lowersToArray(ty, f.object.dg.module.getTarget())) result: { |
| 267 | 288 | const writer = f.object.code_header.writer(); |
| 268 | | const decl_c_value = f.allocLocalValue(); |
| 289 | const alignment = 0; |
| 290 | const decl_c_value = try f.allocLocalValue(ty, alignment); |
| 269 | 291 | try writer.writeAll("static "); |
| 270 | | try f.object.dg.renderTypeAndName(writer, ty, decl_c_value, .Const, 0, .Complete); |
| 292 | try f.object.dg.renderTypeAndName(writer, ty, decl_c_value, .Const, alignment, .Complete); |
| 271 | 293 | try writer.writeAll(" = "); |
| 272 | 294 | try f.object.dg.renderValue(writer, ty, val, .Initializer); |
| 273 | 295 | try writer.writeAll(";\n "); |
| ... | ... | @@ -285,27 +307,37 @@ pub const Function = struct { |
| 285 | 307 | }; |
| 286 | 308 | } |
| 287 | 309 | |
| 288 | | fn allocLocalValue(f: *Function) CValue { |
| 289 | | const result = f.next_local_index; |
| 290 | | f.next_local_index += 1; |
| 291 | | return .{ .local = result }; |
| 310 | /// Skips the reuse logic. |
| 311 | fn allocLocalValue(f: *Function, ty: Type, alignment: u32) !CValue { |
| 312 | const gpa = f.object.dg.gpa; |
| 313 | try f.locals.append(gpa, .{ |
| 314 | .ty = ty, |
| 315 | .alignment = alignment, |
| 316 | }); |
| 317 | return .{ .local = @intCast(LocalIndex, f.locals.items.len - 1) }; |
| 292 | 318 | } |
| 293 | 319 | |
| 294 | | fn allocLocal(f: *Function, ty: Type, mutability: Mutability) !CValue { |
| 295 | | return f.allocAlignedLocal(ty, mutability, 0); |
| 320 | fn allocLocal(f: *Function, inst: Air.Inst.Index, ty: Type) !CValue { |
| 321 | const result = try f.allocAlignedLocal(ty, .Mut, 0); |
| 322 | log.debug("%{d}: allocating t{d}", .{ inst, result.local }); |
| 323 | return result; |
| 296 | 324 | } |
| 297 | 325 | |
| 326 | /// Only allocates the local; does not print anything. |
| 298 | 327 | fn allocAlignedLocal(f: *Function, ty: Type, mutability: Mutability, alignment: u32) !CValue { |
| 299 | | const local_value = f.allocLocalValue(); |
| 300 | | try f.object.dg.renderTypeAndName( |
| 301 | | f.object.writer(), |
| 302 | | ty, |
| 303 | | local_value, |
| 304 | | mutability, |
| 305 | | alignment, |
| 306 | | .Complete, |
| 307 | | ); |
| 308 | | return local_value; |
| 328 | _ = mutability; |
| 329 | |
| 330 | if (f.free_locals.getPtrContext(ty, f.tyHashCtx())) |locals_list| { |
| 331 | for (locals_list.items) |local_index, i| { |
| 332 | const local = f.locals.items[local_index]; |
| 333 | if (local.alignment >= alignment) { |
| 334 | _ = locals_list.swapRemove(i); |
| 335 | return CValue{ .local = local_index }; |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | return try f.allocLocalValue(ty, alignment); |
| 309 | 341 | } |
| 310 | 342 | |
| 311 | 343 | fn writeCValue(f: *Function, w: anytype, c_value: CValue, location: ValueRenderLocation) !void { |
| ... | ... | @@ -375,6 +407,20 @@ pub const Function = struct { |
| 375 | 407 | fn fmtIntLiteral(f: *Function, ty: Type, val: Value) !std.fmt.Formatter(formatIntLiteral) { |
| 376 | 408 | return f.object.dg.fmtIntLiteral(ty, val); |
| 377 | 409 | } |
| 410 | |
| 411 | pub fn deinit(f: *Function, gpa: mem.Allocator) void { |
| 412 | f.allocs.deinit(gpa); |
| 413 | f.locals.deinit(gpa); |
| 414 | f.free_locals.deinit(gpa); |
| 415 | f.blocks.deinit(gpa); |
| 416 | f.value_map.deinit(); |
| 417 | f.object.code.deinit(); |
| 418 | for (f.object.dg.typedefs.values()) |typedef| { |
| 419 | gpa.free(typedef.rendered); |
| 420 | } |
| 421 | f.object.dg.typedefs.deinit(); |
| 422 | f.object.dg.fwd_decl.deinit(); |
| 423 | } |
| 378 | 424 | }; |
| 379 | 425 | |
| 380 | 426 | /// This data is available when outputting .c code for a `Module`. |
| ... | ... | @@ -2400,12 +2446,13 @@ pub fn genFunc(f: *Function) !void { |
| 2400 | 2446 | defer tracy.end(); |
| 2401 | 2447 | |
| 2402 | 2448 | const o = &f.object; |
| 2449 | const gpa = o.dg.gpa; |
| 2403 | 2450 | const tv: TypedValue = .{ |
| 2404 | 2451 | .ty = o.dg.decl.ty, |
| 2405 | 2452 | .val = o.dg.decl.val, |
| 2406 | 2453 | }; |
| 2407 | 2454 | |
| 2408 | | o.code_header = std.ArrayList(u8).init(f.object.dg.gpa); |
| 2455 | o.code_header = std.ArrayList(u8).init(gpa); |
| 2409 | 2456 | defer o.code_header.deinit(); |
| 2410 | 2457 | |
| 2411 | 2458 | const is_global = o.dg.declIsGlobal(tv); |
| ... | ... | @@ -2432,6 +2479,50 @@ pub fn genFunc(f: *Function) !void { |
| 2432 | 2479 | |
| 2433 | 2480 | try o.indent_writer.insertNewline(); |
| 2434 | 2481 | |
| 2482 | // Take advantage of the free_locals map to bucket locals per type. All |
| 2483 | // locals corresponding to AIR instructions should be in there due to |
| 2484 | // Liveness analysis, however, locals from alloc instructions will be |
| 2485 | // missing. These are added now to complete the map. Then we can sort by |
| 2486 | // alignment, descending. |
| 2487 | for (f.allocs.keys()) |local_index| { |
| 2488 | const local = f.locals.items[local_index]; |
| 2489 | log.debug("inserting local {d} into free_locals", .{local_index}); |
| 2490 | const gop = try f.free_locals.getOrPutContext(gpa, local.ty, f.tyHashCtx()); |
| 2491 | if (!gop.found_existing) { |
| 2492 | gop.value_ptr.* = .{}; |
| 2493 | } |
| 2494 | try gop.value_ptr.append(gpa, local_index); |
| 2495 | } |
| 2496 | |
| 2497 | const SortContext = struct { |
| 2498 | target: std.Target, |
| 2499 | keys: []const Type, |
| 2500 | |
| 2501 | pub fn lessThan(ctx: @This(), a_index: usize, b_index: usize) bool { |
| 2502 | const a_ty = ctx.keys[a_index]; |
| 2503 | const b_ty = ctx.keys[b_index]; |
| 2504 | return b_ty.abiAlignment(ctx.target) < a_ty.abiAlignment(ctx.target); |
| 2505 | } |
| 2506 | }; |
| 2507 | const target = o.dg.module.getTarget(); |
| 2508 | f.free_locals.sort(SortContext{ .target = target, .keys = f.free_locals.keys() }); |
| 2509 | |
| 2510 | const w = o.code_header.writer(); |
| 2511 | for (f.free_locals.values()) |list| { |
| 2512 | for (list.items) |local_index| { |
| 2513 | const local = f.locals.items[local_index]; |
| 2514 | try o.dg.renderTypeAndName( |
| 2515 | w, |
| 2516 | local.ty, |
| 2517 | .{ .local = local_index }, |
| 2518 | .Mut, |
| 2519 | local.alignment, |
| 2520 | .Complete, |
| 2521 | ); |
| 2522 | try w.writeAll(";\n "); |
| 2523 | } |
| 2524 | } |
| 2525 | |
| 2435 | 2526 | // If we have a header to insert, append the body to the header |
| 2436 | 2527 | // and then return the result, freeing the body. |
| 2437 | 2528 | if (o.code_header.items.len > empty_header_len) { |
| ... | ... | @@ -2585,20 +2676,19 @@ fn genBodyInner(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail, |
| 2585 | 2676 | .mul_sat => try airBinBuiltinCall(f, inst, "muls", .Bits), |
| 2586 | 2677 | .shl_sat => try airBinBuiltinCall(f, inst, "shls", .Bits), |
| 2587 | 2678 | |
| 2588 | | .sqrt, |
| 2589 | | .sin, |
| 2590 | | .cos, |
| 2591 | | .tan, |
| 2592 | | .exp, |
| 2593 | | .exp2, |
| 2594 | | .log, |
| 2595 | | .log2, |
| 2596 | | .log10, |
| 2597 | | .fabs, |
| 2598 | | .floor, |
| 2599 | | .ceil, |
| 2600 | | .round, |
| 2601 | | => |tag| try airUnFloatOp(f, inst, @tagName(tag)), |
| 2679 | .sqrt => try airUnFloatOp(f, inst, "sqrt"), |
| 2680 | .sin => try airUnFloatOp(f, inst, "sin"), |
| 2681 | .cos => try airUnFloatOp(f, inst, "cos"), |
| 2682 | .tan => try airUnFloatOp(f, inst, "tan"), |
| 2683 | .exp => try airUnFloatOp(f, inst, "exp"), |
| 2684 | .exp2 => try airUnFloatOp(f, inst, "exp2"), |
| 2685 | .log => try airUnFloatOp(f, inst, "log"), |
| 2686 | .log2 => try airUnFloatOp(f, inst, "log2"), |
| 2687 | .log10 => try airUnFloatOp(f, inst, "log10"), |
| 2688 | .fabs => try airUnFloatOp(f, inst, "fabs"), |
| 2689 | .floor => try airUnFloatOp(f, inst, "floor"), |
| 2690 | .ceil => try airUnFloatOp(f, inst, "ceil"), |
| 2691 | .round => try airUnFloatOp(f, inst, "round"), |
| 2602 | 2692 | .trunc_float => try airUnFloatOp(f, inst, "trunc"), |
| 2603 | 2693 | |
| 2604 | 2694 | .mul_add => try airMulAdd(f, inst), |
| ... | ... | @@ -2786,6 +2876,9 @@ fn genBodyInner(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail, |
| 2786 | 2876 | .error_set_has_value => return f.fail("TODO: C backend: implement error_set_has_value", .{}), |
| 2787 | 2877 | // zig fmt: on |
| 2788 | 2878 | }; |
| 2879 | if (result_value == .local) { |
| 2880 | log.debug("map %{d} to t{d}", .{ inst, result_value.local }); |
| 2881 | } |
| 2789 | 2882 | switch (result_value) { |
| 2790 | 2883 | .none => {}, |
| 2791 | 2884 | else => try f.value_map.putNoClobber(Air.indexToRef(inst), result_value), |
| ... | ... | @@ -2794,13 +2887,19 @@ fn genBodyInner(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail, |
| 2794 | 2887 | } |
| 2795 | 2888 | |
| 2796 | 2889 | fn airSliceField(f: *Function, inst: Air.Inst.Index, is_ptr: bool, field_name: []const u8) !CValue { |
| 2797 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 2890 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 2891 | |
| 2892 | if (f.liveness.isUnused(inst)) { |
| 2893 | try reap(f, inst, &.{ty_op.operand}); |
| 2894 | return CValue.none; |
| 2895 | } |
| 2798 | 2896 | |
| 2799 | 2897 | const inst_ty = f.air.typeOfIndex(inst); |
| 2800 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 2801 | 2898 | const operand = try f.resolveInst(ty_op.operand); |
| 2899 | try reap(f, inst, &.{ty_op.operand}); |
| 2802 | 2900 | const writer = f.object.writer(); |
| 2803 | | const local = try f.allocLocal(inst_ty, .Const); |
| 2901 | const local = try f.allocLocal(inst, inst_ty); |
| 2902 | try f.writeCValue(writer, local, .Other); |
| 2804 | 2903 | try writer.writeAll(" = "); |
| 2805 | 2904 | if (is_ptr) { |
| 2806 | 2905 | try writer.writeByte('&'); |
| ... | ... | @@ -2815,22 +2914,29 @@ fn airPtrElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2815 | 2914 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 2816 | 2915 | const ptr_ty = f.air.typeOf(bin_op.lhs); |
| 2817 | 2916 | if ((!ptr_ty.isVolatilePtr() and f.liveness.isUnused(inst)) or |
| 2818 | | !inst_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 2917 | !inst_ty.hasRuntimeBitsIgnoreComptime()) |
| 2918 | { |
| 2919 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2920 | return CValue.none; |
| 2921 | } |
| 2819 | 2922 | |
| 2820 | 2923 | const ptr = try f.resolveInst(bin_op.lhs); |
| 2821 | 2924 | const index = try f.resolveInst(bin_op.rhs); |
| 2925 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2822 | 2926 | |
| 2823 | 2927 | const target = f.object.dg.module.getTarget(); |
| 2824 | 2928 | const is_array = lowersToArray(inst_ty, target); |
| 2825 | 2929 | |
| 2826 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 2930 | const local = try f.allocLocal(inst, inst_ty); |
| 2827 | 2931 | const writer = f.object.writer(); |
| 2828 | 2932 | if (is_array) { |
| 2829 | | try writer.writeAll(";\n"); |
| 2830 | 2933 | try writer.writeAll("memcpy("); |
| 2831 | 2934 | try f.writeCValue(writer, local, .FunctionArgument); |
| 2832 | 2935 | try writer.writeAll(", "); |
| 2833 | | } else try writer.writeAll(" = "); |
| 2936 | } else { |
| 2937 | try f.writeCValue(writer, local, .Other); |
| 2938 | try writer.writeAll(" = "); |
| 2939 | } |
| 2834 | 2940 | try f.writeCValue(writer, ptr, .Other); |
| 2835 | 2941 | try writer.writeByte('['); |
| 2836 | 2942 | try f.writeCValue(writer, index, .Other); |
| ... | ... | @@ -2845,19 +2951,28 @@ fn airPtrElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2845 | 2951 | } |
| 2846 | 2952 | |
| 2847 | 2953 | fn airPtrElemPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2848 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 2849 | | |
| 2850 | 2954 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 2851 | 2955 | const bin_op = f.air.extraData(Air.Bin, ty_pl.payload).data; |
| 2956 | |
| 2957 | if (f.liveness.isUnused(inst)) { |
| 2958 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2959 | return CValue.none; |
| 2960 | } |
| 2961 | |
| 2852 | 2962 | const ptr_ty = f.air.typeOf(bin_op.lhs); |
| 2853 | 2963 | const child_ty = ptr_ty.childType(); |
| 2854 | 2964 | |
| 2855 | 2965 | const ptr = try f.resolveInst(bin_op.lhs); |
| 2856 | | if (!child_ty.hasRuntimeBitsIgnoreComptime()) return ptr; |
| 2966 | if (!child_ty.hasRuntimeBitsIgnoreComptime()) { |
| 2967 | if (f.liveness.operandDies(inst, 1)) try die(f, inst, bin_op.rhs); |
| 2968 | return ptr; |
| 2969 | } |
| 2857 | 2970 | const index = try f.resolveInst(bin_op.rhs); |
| 2971 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2858 | 2972 | |
| 2859 | 2973 | const writer = f.object.writer(); |
| 2860 | | const local = try f.allocLocal(f.air.typeOfIndex(inst), .Const); |
| 2974 | const local = try f.allocLocal(inst, f.air.typeOfIndex(inst)); |
| 2975 | try f.writeCValue(writer, local, .Other); |
| 2861 | 2976 | try writer.writeAll(" = &("); |
| 2862 | 2977 | if (ptr_ty.ptrSize() == .One) { |
| 2863 | 2978 | // It's a pointer to an array, so we need to de-reference. |
| ... | ... | @@ -2876,22 +2991,29 @@ fn airSliceElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2876 | 2991 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 2877 | 2992 | const slice_ty = f.air.typeOf(bin_op.lhs); |
| 2878 | 2993 | if ((!slice_ty.isVolatilePtr() and f.liveness.isUnused(inst)) or |
| 2879 | | !inst_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 2994 | !inst_ty.hasRuntimeBitsIgnoreComptime()) |
| 2995 | { |
| 2996 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2997 | return CValue.none; |
| 2998 | } |
| 2880 | 2999 | |
| 2881 | 3000 | const slice = try f.resolveInst(bin_op.lhs); |
| 2882 | 3001 | const index = try f.resolveInst(bin_op.rhs); |
| 3002 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2883 | 3003 | |
| 2884 | 3004 | const target = f.object.dg.module.getTarget(); |
| 2885 | 3005 | const is_array = lowersToArray(inst_ty, target); |
| 2886 | 3006 | |
| 2887 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 3007 | const local = try f.allocLocal(inst, inst_ty); |
| 2888 | 3008 | const writer = f.object.writer(); |
| 2889 | 3009 | if (is_array) { |
| 2890 | | try writer.writeAll(";\n"); |
| 2891 | 3010 | try writer.writeAll("memcpy("); |
| 2892 | 3011 | try f.writeCValue(writer, local, .FunctionArgument); |
| 2893 | 3012 | try writer.writeAll(", "); |
| 2894 | | } else try writer.writeAll(" = "); |
| 3013 | } else { |
| 3014 | try f.writeCValue(writer, local, .Other); |
| 3015 | try writer.writeAll(" = "); |
| 3016 | } |
| 2895 | 3017 | try f.writeCValue(writer, slice, .Other); |
| 2896 | 3018 | try writer.writeAll(".ptr["); |
| 2897 | 3019 | try f.writeCValue(writer, index, .Other); |
| ... | ... | @@ -2906,23 +3028,28 @@ fn airSliceElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2906 | 3028 | } |
| 2907 | 3029 | |
| 2908 | 3030 | fn airSliceElemPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2909 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 2910 | | |
| 2911 | 3031 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 2912 | 3032 | const bin_op = f.air.extraData(Air.Bin, ty_pl.payload).data; |
| 2913 | 3033 | |
| 3034 | if (f.liveness.isUnused(inst)) { |
| 3035 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3036 | return CValue.none; |
| 3037 | } |
| 3038 | |
| 2914 | 3039 | const slice_ty = f.air.typeOf(bin_op.lhs); |
| 2915 | 3040 | const child_ty = slice_ty.elemType2(); |
| 2916 | 3041 | const slice = try f.resolveInst(bin_op.lhs); |
| 3042 | const index = try f.resolveInst(bin_op.rhs); |
| 3043 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2917 | 3044 | |
| 2918 | 3045 | const writer = f.object.writer(); |
| 2919 | | const local = try f.allocLocal(f.air.typeOfIndex(inst), .Const); |
| 3046 | const local = try f.allocLocal(inst, f.air.typeOfIndex(inst)); |
| 3047 | try f.writeCValue(writer, local, .Other); |
| 2920 | 3048 | try writer.writeAll(" = "); |
| 2921 | 3049 | if (child_ty.hasRuntimeBitsIgnoreComptime()) try writer.writeByte('&'); |
| 2922 | 3050 | try f.writeCValue(writer, slice, .Other); |
| 2923 | 3051 | try writer.writeAll(".ptr"); |
| 2924 | 3052 | if (child_ty.hasRuntimeBitsIgnoreComptime()) { |
| 2925 | | const index = try f.resolveInst(bin_op.rhs); |
| 2926 | 3053 | try writer.writeByte('['); |
| 2927 | 3054 | try f.writeCValue(writer, index, .Other); |
| 2928 | 3055 | try writer.writeByte(']'); |
| ... | ... | @@ -2932,24 +3059,30 @@ fn airSliceElemPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2932 | 3059 | } |
| 2933 | 3060 | |
| 2934 | 3061 | fn airArrayElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3062 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 2935 | 3063 | const inst_ty = f.air.typeOfIndex(inst); |
| 2936 | | if (f.liveness.isUnused(inst) or !inst_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 3064 | if (f.liveness.isUnused(inst) or !inst_ty.hasRuntimeBitsIgnoreComptime()) { |
| 3065 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3066 | return CValue.none; |
| 3067 | } |
| 2937 | 3068 | |
| 2938 | | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 2939 | 3069 | const array = try f.resolveInst(bin_op.lhs); |
| 2940 | 3070 | const index = try f.resolveInst(bin_op.rhs); |
| 3071 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 2941 | 3072 | |
| 2942 | 3073 | const target = f.object.dg.module.getTarget(); |
| 2943 | 3074 | const is_array = lowersToArray(inst_ty, target); |
| 2944 | 3075 | |
| 2945 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 3076 | const local = try f.allocLocal(inst, inst_ty); |
| 2946 | 3077 | const writer = f.object.writer(); |
| 2947 | 3078 | if (is_array) { |
| 2948 | | try writer.writeAll(";\n"); |
| 2949 | 3079 | try writer.writeAll("memcpy("); |
| 2950 | 3080 | try f.writeCValue(writer, local, .FunctionArgument); |
| 2951 | 3081 | try writer.writeAll(", "); |
| 2952 | | } else try writer.writeAll(" = "); |
| 3082 | } else { |
| 3083 | try f.writeCValue(writer, local, .Other); |
| 3084 | try writer.writeAll(" = "); |
| 3085 | } |
| 2953 | 3086 | try f.writeCValue(writer, array, .Other); |
| 2954 | 3087 | try writer.writeByte('['); |
| 2955 | 3088 | try f.writeCValue(writer, index, .Other); |
| ... | ... | @@ -2964,36 +3097,36 @@ fn airArrayElemVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2964 | 3097 | } |
| 2965 | 3098 | |
| 2966 | 3099 | fn airAlloc(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2967 | | const writer = f.object.writer(); |
| 2968 | 3100 | const inst_ty = f.air.typeOfIndex(inst); |
| 2969 | 3101 | |
| 2970 | 3102 | const elem_type = inst_ty.elemType(); |
| 2971 | | const mutability: Mutability = if (inst_ty.isConstPtr()) .Const else .Mut; |
| 2972 | 3103 | if (!elem_type.isFnOrHasRuntimeBitsIgnoreComptime()) { |
| 2973 | 3104 | return CValue{ .undef = inst_ty }; |
| 2974 | 3105 | } |
| 2975 | 3106 | |
| 3107 | const mutability: Mutability = if (inst_ty.isConstPtr()) .Const else .Mut; |
| 2976 | 3108 | const target = f.object.dg.module.getTarget(); |
| 2977 | | // First line: the variable used as data storage. |
| 2978 | 3109 | const local = try f.allocAlignedLocal(elem_type, mutability, inst_ty.ptrAlignment(target)); |
| 2979 | | try writer.writeAll(";\n"); |
| 2980 | | |
| 3110 | log.debug("%{d}: allocated unfreeable t{d}", .{ inst, local.local }); |
| 3111 | const gpa = f.object.dg.module.gpa; |
| 3112 | try f.allocs.put(gpa, local.local, {}); |
| 2981 | 3113 | return CValue{ .local_ref = local.local }; |
| 2982 | 3114 | } |
| 2983 | 3115 | |
| 2984 | 3116 | fn airRetPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 2985 | | const writer = f.object.writer(); |
| 2986 | 3117 | const inst_ty = f.air.typeOfIndex(inst); |
| 2987 | 3118 | |
| 2988 | 3119 | const elem_ty = inst_ty.elemType(); |
| 2989 | | if (!elem_ty.hasRuntimeBitsIgnoreComptime()) { |
| 3120 | if (!elem_ty.isFnOrHasRuntimeBitsIgnoreComptime()) { |
| 2990 | 3121 | return CValue{ .undef = inst_ty }; |
| 2991 | 3122 | } |
| 2992 | 3123 | |
| 2993 | | // First line: the variable used as data storage. |
| 2994 | | const local = try f.allocLocal(elem_ty, .Mut); |
| 2995 | | try writer.writeAll(";\n"); |
| 2996 | | |
| 3124 | const mutability: Mutability = if (inst_ty.isConstPtr()) .Const else .Mut; |
| 3125 | const target = f.object.dg.module.getTarget(); |
| 3126 | const local = try f.allocAlignedLocal(elem_ty, mutability, inst_ty.ptrAlignment(target)); |
| 3127 | log.debug("%{d}: allocated unfreeable t{d}", .{ inst, local.local }); |
| 3128 | const gpa = f.object.dg.module.gpa; |
| 3129 | try f.allocs.put(gpa, local.local, {}); |
| 2997 | 3130 | return CValue{ .local_ref = local.local }; |
| 2998 | 3131 | } |
| 2999 | 3132 | |
| ... | ... | @@ -3009,21 +3142,25 @@ fn airLoad(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3009 | 3142 | const src_ty = ptr_info.pointee_type; |
| 3010 | 3143 | |
| 3011 | 3144 | if (!src_ty.hasRuntimeBitsIgnoreComptime() or |
| 3012 | | !ptr_info.@"volatile" and f.liveness.isUnused(inst)) |
| 3145 | (!ptr_info.@"volatile" and f.liveness.isUnused(inst))) |
| 3146 | { |
| 3147 | try reap(f, inst, &.{ty_op.operand}); |
| 3013 | 3148 | return CValue.none; |
| 3149 | } |
| 3150 | |
| 3151 | const operand = try f.resolveInst(ty_op.operand); |
| 3152 | |
| 3153 | try reap(f, inst, &.{ty_op.operand}); |
| 3014 | 3154 | |
| 3015 | 3155 | const target = f.object.dg.module.getTarget(); |
| 3016 | 3156 | const is_aligned = ptr_info.@"align" == 0 or ptr_info.@"align" >= src_ty.abiAlignment(target); |
| 3017 | 3157 | const is_array = lowersToArray(src_ty, target); |
| 3018 | 3158 | const need_memcpy = !is_aligned or is_array; |
| 3019 | | const operand = try f.resolveInst(ty_op.operand); |
| 3020 | 3159 | const writer = f.object.writer(); |
| 3021 | 3160 | |
| 3022 | | // We need to initialize arrays and unaligned loads with a memcpy so they must be mutable. |
| 3023 | | const local = try f.allocLocal(src_ty, if (need_memcpy) .Mut else .Const); |
| 3161 | const local = try f.allocLocal(inst, src_ty); |
| 3024 | 3162 | |
| 3025 | 3163 | if (need_memcpy) { |
| 3026 | | try writer.writeAll(";\n"); |
| 3027 | 3164 | try writer.writeAll("memcpy("); |
| 3028 | 3165 | if (!is_array) try writer.writeByte('&'); |
| 3029 | 3166 | try f.writeCValue(writer, local, .FunctionArgument); |
| ... | ... | @@ -3057,6 +3194,7 @@ fn airLoad(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3057 | 3194 | }; |
| 3058 | 3195 | const field_ty = Type.initPayload(&field_pl.base); |
| 3059 | 3196 | |
| 3197 | try f.writeCValue(writer, local, .Other); |
| 3060 | 3198 | try writer.writeAll(" = ("); |
| 3061 | 3199 | try f.renderTypecast(writer, src_ty); |
| 3062 | 3200 | try writer.writeAll(")zig_wrap_"); |
| ... | ... | @@ -3071,6 +3209,7 @@ fn airLoad(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3071 | 3209 | try f.object.dg.renderBuiltinInfo(writer, field_ty, .Bits); |
| 3072 | 3210 | try writer.writeByte(')'); |
| 3073 | 3211 | } else { |
| 3212 | try f.writeCValue(writer, local, .Other); |
| 3074 | 3213 | try writer.writeAll(" = "); |
| 3075 | 3214 | try f.writeCValueDeref(writer, operand); |
| 3076 | 3215 | } |
| ... | ... | @@ -3090,9 +3229,9 @@ fn airRet(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValue { |
| 3090 | 3229 | if (lowered_ret_ty.hasRuntimeBitsIgnoreComptime()) { |
| 3091 | 3230 | var deref = is_ptr; |
| 3092 | 3231 | const operand = try f.resolveInst(un_op); |
| 3232 | try reap(f, inst, &.{un_op}); |
| 3093 | 3233 | const ret_val = if (lowersToArray(ret_ty, target)) ret_val: { |
| 3094 | | const array_local = try f.allocLocal(lowered_ret_ty, .Mut); |
| 3095 | | try writer.writeAll(";\n"); |
| 3234 | const array_local = try f.allocLocal(inst, lowered_ret_ty); |
| 3096 | 3235 | try writer.writeAll("memcpy("); |
| 3097 | 3236 | try f.writeCValueMember(writer, array_local, .{ .field = 0 }); |
| 3098 | 3237 | try writer.writeAll(", "); |
| ... | ... | @@ -3113,23 +3252,30 @@ fn airRet(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValue { |
| 3113 | 3252 | else |
| 3114 | 3253 | try f.writeCValue(writer, ret_val, .Other); |
| 3115 | 3254 | try writer.writeAll(";\n"); |
| 3116 | | } else if (f.object.dg.decl.ty.fnCallingConvention() != .Naked) { |
| 3117 | | // Not even allowed to return void in a naked function. |
| 3118 | | try writer.writeAll("return;\n"); |
| 3255 | } else { |
| 3256 | try reap(f, inst, &.{un_op}); |
| 3257 | if (f.object.dg.decl.ty.fnCallingConvention() != .Naked) { |
| 3258 | // Not even allowed to return void in a naked function. |
| 3259 | try writer.writeAll("return;\n"); |
| 3260 | } |
| 3119 | 3261 | } |
| 3120 | 3262 | return CValue.none; |
| 3121 | 3263 | } |
| 3122 | 3264 | |
| 3123 | 3265 | fn airIntCast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3124 | | if (f.liveness.isUnused(inst)) |
| 3266 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3267 | |
| 3268 | if (f.liveness.isUnused(inst)) { |
| 3269 | try reap(f, inst, &.{ty_op.operand}); |
| 3125 | 3270 | return CValue.none; |
| 3271 | } |
| 3126 | 3272 | |
| 3127 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3128 | 3273 | const operand = try f.resolveInst(ty_op.operand); |
| 3129 | | |
| 3274 | try reap(f, inst, &.{ty_op.operand}); |
| 3130 | 3275 | const writer = f.object.writer(); |
| 3131 | 3276 | const inst_ty = f.air.typeOfIndex(inst); |
| 3132 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3277 | const local = try f.allocLocal(inst, inst_ty); |
| 3278 | try f.writeCValue(writer, local, .Other); |
| 3133 | 3279 | try writer.writeAll(" = ("); |
| 3134 | 3280 | try f.renderTypecast(writer, inst_ty); |
| 3135 | 3281 | try writer.writeByte(')'); |
| ... | ... | @@ -3139,17 +3285,22 @@ fn airIntCast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3139 | 3285 | } |
| 3140 | 3286 | |
| 3141 | 3287 | fn airTrunc(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3142 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3288 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3289 | if (f.liveness.isUnused(inst)) { |
| 3290 | try reap(f, inst, &.{ty_op.operand}); |
| 3291 | return CValue.none; |
| 3292 | } |
| 3143 | 3293 | |
| 3294 | const operand = try f.resolveInst(ty_op.operand); |
| 3295 | try reap(f, inst, &.{ty_op.operand}); |
| 3144 | 3296 | const inst_ty = f.air.typeOfIndex(inst); |
| 3145 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3146 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3147 | 3297 | const writer = f.object.writer(); |
| 3148 | | const operand = try f.resolveInst(ty_op.operand); |
| 3298 | const local = try f.allocLocal(inst, inst_ty); |
| 3149 | 3299 | const target = f.object.dg.module.getTarget(); |
| 3150 | 3300 | const dest_int_info = inst_ty.intInfo(target); |
| 3151 | 3301 | const dest_bits = dest_int_info.bits; |
| 3152 | 3302 | |
| 3303 | try f.writeCValue(writer, local, .Other); |
| 3153 | 3304 | try writer.writeAll(" = ("); |
| 3154 | 3305 | try f.renderTypecast(writer, inst_ty); |
| 3155 | 3306 | try writer.writeByte(')'); |
| ... | ... | @@ -3191,20 +3342,24 @@ fn airTrunc(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3191 | 3342 | } |
| 3192 | 3343 | |
| 3193 | 3344 | fn airBoolToInt(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3194 | | if (f.liveness.isUnused(inst)) |
| 3195 | | return CValue.none; |
| 3196 | 3345 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 3346 | if (f.liveness.isUnused(inst)) { |
| 3347 | try reap(f, inst, &.{un_op}); |
| 3348 | return CValue.none; |
| 3349 | } |
| 3350 | const operand = try f.resolveInst(un_op); |
| 3351 | try reap(f, inst, &.{un_op}); |
| 3197 | 3352 | const writer = f.object.writer(); |
| 3198 | 3353 | const inst_ty = f.air.typeOfIndex(inst); |
| 3199 | | const operand = try f.resolveInst(un_op); |
| 3200 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3354 | const local = try f.allocLocal(inst, inst_ty); |
| 3355 | try f.writeCValue(writer, local, .Other); |
| 3201 | 3356 | try writer.writeAll(" = "); |
| 3202 | 3357 | try f.writeCValue(writer, operand, .Other); |
| 3203 | 3358 | try writer.writeAll(";\n"); |
| 3204 | 3359 | return local; |
| 3205 | 3360 | } |
| 3206 | 3361 | |
| 3207 | | fn airStoreUndefined(f: *Function, lhs_child_ty: Type, dest_ptr: CValue) !CValue { |
| 3362 | fn storeUndefined(f: *Function, lhs_child_ty: Type, dest_ptr: CValue) !CValue { |
| 3208 | 3363 | if (f.wantSafety()) { |
| 3209 | 3364 | const writer = f.object.writer(); |
| 3210 | 3365 | try writer.writeAll("memset("); |
| ... | ... | @@ -3220,18 +3375,23 @@ fn airStore(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3220 | 3375 | // *a = b; |
| 3221 | 3376 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 3222 | 3377 | const ptr_info = f.air.typeOf(bin_op.lhs).ptrInfo().data; |
| 3223 | | if (!ptr_info.pointee_type.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 3378 | if (!ptr_info.pointee_type.hasRuntimeBitsIgnoreComptime()) { |
| 3379 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3380 | return CValue.none; |
| 3381 | } |
| 3224 | 3382 | |
| 3225 | 3383 | const ptr_val = try f.resolveInst(bin_op.lhs); |
| 3226 | 3384 | const src_ty = f.air.typeOf(bin_op.rhs); |
| 3227 | 3385 | const src_val = try f.resolveInst(bin_op.rhs); |
| 3228 | 3386 | |
| 3387 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3388 | |
| 3229 | 3389 | // TODO Sema should emit a different instruction when the store should |
| 3230 | 3390 | // possibly do the safety 0xaa bytes for undefined. |
| 3231 | 3391 | const src_val_is_undefined = |
| 3232 | 3392 | if (f.air.value(bin_op.rhs)) |v| v.isUndefDeep() else false; |
| 3233 | 3393 | if (src_val_is_undefined) |
| 3234 | | return try airStoreUndefined(f, ptr_info.pointee_type, ptr_val); |
| 3394 | return try storeUndefined(f, ptr_info.pointee_type, ptr_val); |
| 3235 | 3395 | |
| 3236 | 3396 | const target = f.object.dg.module.getTarget(); |
| 3237 | 3397 | const is_aligned = ptr_info.@"align" == 0 or |
| ... | ... | @@ -3249,7 +3409,8 @@ fn airStore(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3249 | 3409 | // so work around this by initializing into new local. |
| 3250 | 3410 | // TODO this should be done by manually initializing elements of the dest array |
| 3251 | 3411 | const array_src = if (src_val == .constant) blk: { |
| 3252 | | const new_local = try f.allocLocal(src_ty, .Const); |
| 3412 | const new_local = try f.allocLocal(inst, src_ty); |
| 3413 | try f.writeCValue(writer, new_local, .Other); |
| 3253 | 3414 | try writer.writeAll(" = "); |
| 3254 | 3415 | try f.writeCValue(writer, src_val, .Initializer); |
| 3255 | 3416 | try writer.writeAll(";\n"); |
| ... | ... | @@ -3265,6 +3426,9 @@ fn airStore(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3265 | 3426 | try writer.writeAll(", sizeof("); |
| 3266 | 3427 | try f.renderTypecast(writer, src_ty); |
| 3267 | 3428 | try writer.writeAll("))"); |
| 3429 | if (src_val == .constant) { |
| 3430 | try freeLocal(f, inst, array_src.local, 0); |
| 3431 | } |
| 3268 | 3432 | } else if (ptr_info.host_size != 0) { |
| 3269 | 3433 | const host_bits = ptr_info.host_size * 8; |
| 3270 | 3434 | var host_pl = Type.Payload.Bits{ .base = .{ .tag = .int_unsigned }, .data = host_bits }; |
| ... | ... | @@ -3330,22 +3494,24 @@ fn airStore(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3330 | 3494 | } |
| 3331 | 3495 | |
| 3332 | 3496 | fn airOverflow(f: *Function, inst: Air.Inst.Index, operation: []const u8, info: BuiltinInfo) !CValue { |
| 3333 | | if (f.liveness.isUnused(inst)) |
| 3334 | | return CValue.none; |
| 3335 | | |
| 3336 | 3497 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 3337 | 3498 | const bin_op = f.air.extraData(Air.Bin, ty_pl.payload).data; |
| 3338 | 3499 | |
| 3500 | if (f.liveness.isUnused(inst)) { |
| 3501 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3502 | return CValue.none; |
| 3503 | } |
| 3504 | |
| 3339 | 3505 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3340 | 3506 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3507 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3341 | 3508 | |
| 3342 | 3509 | const inst_ty = f.air.typeOfIndex(inst); |
| 3343 | 3510 | const vector_ty = f.air.typeOf(bin_op.lhs); |
| 3344 | 3511 | const scalar_ty = vector_ty.scalarType(); |
| 3345 | 3512 | const w = f.object.writer(); |
| 3346 | 3513 | |
| 3347 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 3348 | | try w.writeAll(";\n"); |
| 3514 | const local = try f.allocLocal(inst, inst_ty); |
| 3349 | 3515 | |
| 3350 | 3516 | switch (vector_ty.zigTypeTag()) { |
| 3351 | 3517 | .Vector => { |
| ... | ... | @@ -3381,15 +3547,20 @@ fn airOverflow(f: *Function, inst: Air.Inst.Index, operation: []const u8, info: |
| 3381 | 3547 | } |
| 3382 | 3548 | |
| 3383 | 3549 | fn airNot(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3384 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3385 | | |
| 3386 | 3550 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3551 | |
| 3552 | if (f.liveness.isUnused(inst)) { |
| 3553 | try reap(f, inst, &.{ty_op.operand}); |
| 3554 | return CValue.none; |
| 3555 | } |
| 3556 | |
| 3387 | 3557 | const op = try f.resolveInst(ty_op.operand); |
| 3558 | try reap(f, inst, &.{ty_op.operand}); |
| 3388 | 3559 | |
| 3389 | 3560 | const writer = f.object.writer(); |
| 3390 | 3561 | const inst_ty = f.air.typeOfIndex(inst); |
| 3391 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3392 | | |
| 3562 | const local = try f.allocLocal(inst, inst_ty); |
| 3563 | try f.writeCValue(writer, local, .Other); |
| 3393 | 3564 | try writer.writeAll(" = "); |
| 3394 | 3565 | try writer.writeByte(if (inst_ty.tag() == .bool) '!' else '~'); |
| 3395 | 3566 | try f.writeCValue(writer, op, .Other); |
| ... | ... | @@ -3405,22 +3576,24 @@ fn airBinOp( |
| 3405 | 3576 | operation: []const u8, |
| 3406 | 3577 | info: BuiltinInfo, |
| 3407 | 3578 | ) !CValue { |
| 3408 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3409 | | |
| 3410 | 3579 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 3411 | | |
| 3412 | 3580 | const operand_ty = f.air.typeOf(bin_op.lhs); |
| 3413 | 3581 | const target = f.object.dg.module.getTarget(); |
| 3414 | 3582 | if ((operand_ty.isInt() and operand_ty.bitSize(target) > 64) or operand_ty.isRuntimeFloat()) |
| 3415 | 3583 | return try airBinBuiltinCall(f, inst, operation, info); |
| 3416 | 3584 | |
| 3417 | | const inst_ty = f.air.typeOfIndex(inst); |
| 3418 | 3585 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3419 | 3586 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3420 | 3587 | |
| 3421 | | const writer = f.object.writer(); |
| 3422 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3588 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3589 | |
| 3590 | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3591 | |
| 3592 | const inst_ty = f.air.typeOfIndex(inst); |
| 3423 | 3593 | |
| 3594 | const writer = f.object.writer(); |
| 3595 | const local = try f.allocLocal(inst, inst_ty); |
| 3596 | try f.writeCValue(writer, local, .Other); |
| 3424 | 3597 | try writer.writeAll(" = "); |
| 3425 | 3598 | try f.writeCValue(writer, lhs, .Other); |
| 3426 | 3599 | try writer.writeByte(' '); |
| ... | ... | @@ -3433,24 +3606,28 @@ fn airBinOp( |
| 3433 | 3606 | } |
| 3434 | 3607 | |
| 3435 | 3608 | fn airCmpOp(f: *Function, inst: Air.Inst.Index, operator: []const u8, operation: []const u8) !CValue { |
| 3436 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3437 | | |
| 3438 | 3609 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 3439 | 3610 | |
| 3611 | if (f.liveness.isUnused(inst)) { |
| 3612 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3613 | return CValue.none; |
| 3614 | } |
| 3615 | |
| 3440 | 3616 | const operand_ty = f.air.typeOf(bin_op.lhs); |
| 3441 | 3617 | const target = f.object.dg.module.getTarget(); |
| 3442 | 3618 | if (operand_ty.isInt() and operand_ty.bitSize(target) > 64) |
| 3443 | | return try airCmpBuiltinCall(f, inst, operator, "cmp"); |
| 3619 | return try cmpBuiltinCall(f, inst, operator, "cmp"); |
| 3444 | 3620 | if (operand_ty.isRuntimeFloat()) |
| 3445 | | return try airCmpBuiltinCall(f, inst, operator, operation); |
| 3621 | return try cmpBuiltinCall(f, inst, operator, operation); |
| 3446 | 3622 | |
| 3447 | 3623 | const inst_ty = f.air.typeOfIndex(inst); |
| 3448 | 3624 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3449 | 3625 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3626 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3450 | 3627 | |
| 3451 | 3628 | const writer = f.object.writer(); |
| 3452 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3453 | | |
| 3629 | const local = try f.allocLocal(inst, inst_ty); |
| 3630 | try f.writeCValue(writer, local, .Other); |
| 3454 | 3631 | try writer.writeAll(" = "); |
| 3455 | 3632 | try f.writeCValue(writer, lhs, .Other); |
| 3456 | 3633 | try writer.writeByte(' '); |
| ... | ... | @@ -3469,24 +3646,28 @@ fn airEquality( |
| 3469 | 3646 | operator: []const u8, |
| 3470 | 3647 | operation: []const u8, |
| 3471 | 3648 | ) !CValue { |
| 3472 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3473 | | |
| 3474 | 3649 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 3475 | 3650 | |
| 3651 | if (f.liveness.isUnused(inst)) { |
| 3652 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3653 | return CValue.none; |
| 3654 | } |
| 3655 | |
| 3476 | 3656 | const operand_ty = f.air.typeOf(bin_op.lhs); |
| 3477 | 3657 | const target = f.object.dg.module.getTarget(); |
| 3478 | 3658 | if (operand_ty.isInt() and operand_ty.bitSize(target) > 64) |
| 3479 | | return try airCmpBuiltinCall(f, inst, operator, "cmp"); |
| 3659 | return try cmpBuiltinCall(f, inst, operator, "cmp"); |
| 3480 | 3660 | if (operand_ty.isRuntimeFloat()) |
| 3481 | | return try airCmpBuiltinCall(f, inst, operator, operation); |
| 3661 | return try cmpBuiltinCall(f, inst, operator, operation); |
| 3482 | 3662 | |
| 3483 | 3663 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3484 | 3664 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3665 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3485 | 3666 | |
| 3486 | 3667 | const writer = f.object.writer(); |
| 3487 | 3668 | const inst_ty = f.air.typeOfIndex(inst); |
| 3488 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3489 | | |
| 3669 | const local = try f.allocLocal(inst, inst_ty); |
| 3670 | try f.writeCValue(writer, local, .Other); |
| 3490 | 3671 | try writer.writeAll(" = "); |
| 3491 | 3672 | |
| 3492 | 3673 | if (operand_ty.zigTypeTag() == .Optional and !operand_ty.isPtrLikeOptional()) { |
| ... | ... | @@ -3521,14 +3702,20 @@ fn airEquality( |
| 3521 | 3702 | } |
| 3522 | 3703 | |
| 3523 | 3704 | fn airCmpLtErrorsLen(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3524 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3525 | | |
| 3526 | 3705 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 3706 | |
| 3707 | if (f.liveness.isUnused(inst)) { |
| 3708 | try reap(f, inst, &.{un_op}); |
| 3709 | return CValue.none; |
| 3710 | } |
| 3711 | |
| 3527 | 3712 | const inst_ty = f.air.typeOfIndex(inst); |
| 3528 | 3713 | const operand = try f.resolveInst(un_op); |
| 3714 | try reap(f, inst, &.{un_op}); |
| 3529 | 3715 | |
| 3530 | 3716 | const writer = f.object.writer(); |
| 3531 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3717 | const local = try f.allocLocal(inst, inst_ty); |
| 3718 | try f.writeCValue(writer, local, .Other); |
| 3532 | 3719 | try writer.writeAll(" = "); |
| 3533 | 3720 | try f.writeCValue(writer, operand, .Other); |
| 3534 | 3721 | try writer.print(" < sizeof({ }) / sizeof(*{0 });\n", .{fmtIdent("zig_errorName")}); |
| ... | ... | @@ -3536,16 +3723,18 @@ fn airCmpLtErrorsLen(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3536 | 3723 | } |
| 3537 | 3724 | |
| 3538 | 3725 | fn airPtrAddSub(f: *Function, inst: Air.Inst.Index, operator: u8) !CValue { |
| 3539 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3540 | | |
| 3541 | 3726 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 3542 | 3727 | const bin_op = f.air.extraData(Air.Bin, ty_pl.payload).data; |
| 3728 | if (f.liveness.isUnused(inst)) { |
| 3729 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3730 | return CValue.none; |
| 3731 | } |
| 3732 | |
| 3543 | 3733 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3544 | 3734 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3735 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3545 | 3736 | |
| 3546 | | const writer = f.object.writer(); |
| 3547 | 3737 | const inst_ty = f.air.typeOfIndex(inst); |
| 3548 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3549 | 3738 | const elem_ty = switch (inst_ty.ptrSize()) { |
| 3550 | 3739 | .One => blk: { |
| 3551 | 3740 | const array_ty = inst_ty.childType(); |
| ... | ... | @@ -3554,8 +3743,12 @@ fn airPtrAddSub(f: *Function, inst: Air.Inst.Index, operator: u8) !CValue { |
| 3554 | 3743 | else => inst_ty.childType(), |
| 3555 | 3744 | }; |
| 3556 | 3745 | |
| 3557 | | // We must convert to and from integer types to prevent UB if the operation results in a NULL pointer, |
| 3558 | | // or if LHS is NULL. The operation is only UB if the result is NULL and then dereferenced. |
| 3746 | // We must convert to and from integer types to prevent UB if the operation |
| 3747 | // results in a NULL pointer, or if LHS is NULL. The operation is only UB |
| 3748 | // if the result is NULL and then dereferenced. |
| 3749 | const local = try f.allocLocal(inst, inst_ty); |
| 3750 | const writer = f.object.writer(); |
| 3751 | try f.writeCValue(writer, local, .Other); |
| 3559 | 3752 | try writer.writeAll(" = ("); |
| 3560 | 3753 | try f.renderTypecast(writer, inst_ty); |
| 3561 | 3754 | try writer.writeAll(")(((uintptr_t)"); |
| ... | ... | @@ -3572,10 +3765,13 @@ fn airPtrAddSub(f: *Function, inst: Air.Inst.Index, operator: u8) !CValue { |
| 3572 | 3765 | } |
| 3573 | 3766 | |
| 3574 | 3767 | fn airMinMax(f: *Function, inst: Air.Inst.Index, operator: u8, operation: []const u8) !CValue { |
| 3575 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3576 | | |
| 3577 | 3768 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 3578 | 3769 | |
| 3770 | if (f.liveness.isUnused(inst)) { |
| 3771 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3772 | return CValue.none; |
| 3773 | } |
| 3774 | |
| 3579 | 3775 | const inst_ty = f.air.typeOfIndex(inst); |
| 3580 | 3776 | const target = f.object.dg.module.getTarget(); |
| 3581 | 3777 | if (inst_ty.isInt() and inst_ty.bitSize(target) > 64) |
| ... | ... | @@ -3585,10 +3781,11 @@ fn airMinMax(f: *Function, inst: Air.Inst.Index, operator: u8, operation: []cons |
| 3585 | 3781 | |
| 3586 | 3782 | const lhs = try f.resolveInst(bin_op.lhs); |
| 3587 | 3783 | const rhs = try f.resolveInst(bin_op.rhs); |
| 3784 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3588 | 3785 | |
| 3589 | 3786 | const writer = f.object.writer(); |
| 3590 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3591 | | |
| 3787 | const local = try f.allocLocal(inst, inst_ty); |
| 3788 | try f.writeCValue(writer, local, .Other); |
| 3592 | 3789 | // (lhs <> rhs) ? lhs : rhs |
| 3593 | 3790 | try writer.writeAll(" = ("); |
| 3594 | 3791 | try f.writeCValue(writer, lhs, .Other); |
| ... | ... | @@ -3606,17 +3803,22 @@ fn airMinMax(f: *Function, inst: Air.Inst.Index, operator: u8, operation: []cons |
| 3606 | 3803 | } |
| 3607 | 3804 | |
| 3608 | 3805 | fn airSlice(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3609 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3610 | | |
| 3611 | 3806 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 3612 | 3807 | const bin_op = f.air.extraData(Air.Bin, ty_pl.payload).data; |
| 3808 | |
| 3809 | if (f.liveness.isUnused(inst)) { |
| 3810 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3811 | return CValue.none; |
| 3812 | } |
| 3813 | |
| 3613 | 3814 | const ptr = try f.resolveInst(bin_op.lhs); |
| 3614 | 3815 | const len = try f.resolveInst(bin_op.rhs); |
| 3816 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 3615 | 3817 | |
| 3616 | 3818 | const writer = f.object.writer(); |
| 3617 | 3819 | const inst_ty = f.air.typeOfIndex(inst); |
| 3618 | | const local = try f.allocLocal(inst_ty, .Const); |
| 3619 | | |
| 3820 | const local = try f.allocLocal(inst, inst_ty); |
| 3821 | try f.writeCValue(writer, local, .Other); |
| 3620 | 3822 | try writer.writeAll(" = {("); |
| 3621 | 3823 | var buf: Type.SlicePtrFieldTypeBuffer = undefined; |
| 3622 | 3824 | try f.renderTypecast(writer, inst_ty.slicePtrFieldType(&buf)); |
| ... | ... | @@ -3634,8 +3836,7 @@ fn airCall( |
| 3634 | 3836 | inst: Air.Inst.Index, |
| 3635 | 3837 | modifier: std.builtin.CallOptions.Modifier, |
| 3636 | 3838 | ) !CValue { |
| 3637 | | // Not even allowed to call panic in a naked function. |
| 3638 | | if (f.object.dg.decl.ty.fnCallingConvention() == .Naked) return .none; |
| 3839 | const gpa = f.object.dg.gpa; |
| 3639 | 3840 | |
| 3640 | 3841 | switch (modifier) { |
| 3641 | 3842 | .auto => {}, |
| ... | ... | @@ -3647,6 +3848,21 @@ fn airCall( |
| 3647 | 3848 | const pl_op = f.air.instructions.items(.data)[inst].pl_op; |
| 3648 | 3849 | const extra = f.air.extraData(Air.Call, pl_op.payload); |
| 3649 | 3850 | const args = @ptrCast([]const Air.Inst.Ref, f.air.extra[extra.end..][0..extra.data.args_len]); |
| 3851 | |
| 3852 | const resolved_args = try gpa.alloc(CValue, args.len); |
| 3853 | defer gpa.free(resolved_args); |
| 3854 | for (args) |arg, i| { |
| 3855 | resolved_args[i] = try f.resolveInst(arg); |
| 3856 | } |
| 3857 | |
| 3858 | const callee = try f.resolveInst(pl_op.operand); |
| 3859 | |
| 3860 | { |
| 3861 | var bt = iterateBigTomb(f, inst); |
| 3862 | try bt.feed(pl_op.operand); |
| 3863 | for (args) |arg| try bt.feed(arg); |
| 3864 | } |
| 3865 | |
| 3650 | 3866 | const callee_ty = f.air.typeOf(pl_op.operand); |
| 3651 | 3867 | const fn_ty = switch (callee_ty.zigTypeTag()) { |
| 3652 | 3868 | .Fn => callee_ty, |
| ... | ... | @@ -3668,7 +3884,8 @@ fn airCall( |
| 3668 | 3884 | try writer.writeByte(')'); |
| 3669 | 3885 | break :r .none; |
| 3670 | 3886 | } else r: { |
| 3671 | | const local = try f.allocLocal(lowered_ret_ty, .Const); |
| 3887 | const local = try f.allocLocal(inst, lowered_ret_ty); |
| 3888 | try f.writeCValue(writer, local, .Other); |
| 3672 | 3889 | try writer.writeAll(" = "); |
| 3673 | 3890 | break :r local; |
| 3674 | 3891 | }; |
| ... | ... | @@ -3694,13 +3911,12 @@ fn airCall( |
| 3694 | 3911 | break :callee; |
| 3695 | 3912 | } |
| 3696 | 3913 | // Fall back to function pointer call. |
| 3697 | | const callee = try f.resolveInst(pl_op.operand); |
| 3698 | 3914 | try f.writeCValue(writer, callee, .Other); |
| 3699 | 3915 | } |
| 3700 | 3916 | |
| 3701 | 3917 | try writer.writeByte('('); |
| 3702 | 3918 | var args_written: usize = 0; |
| 3703 | | for (args) |arg| { |
| 3919 | for (args) |arg, arg_i| { |
| 3704 | 3920 | const ty = f.air.typeOf(arg); |
| 3705 | 3921 | if (!ty.hasRuntimeBitsIgnoreComptime()) continue; |
| 3706 | 3922 | if (args_written != 0) { |
| ... | ... | @@ -3715,23 +3931,28 @@ fn airCall( |
| 3715 | 3931 | if (ty.isVolatilePtr()) try writer.writeAll(" volatile"); |
| 3716 | 3932 | try writer.writeAll(" *)"); |
| 3717 | 3933 | } |
| 3718 | | try f.writeCValue(writer, try f.resolveInst(arg), .FunctionArgument); |
| 3934 | try f.writeCValue(writer, resolved_args[arg_i], .FunctionArgument); |
| 3719 | 3935 | args_written += 1; |
| 3720 | 3936 | } |
| 3721 | 3937 | try writer.writeAll(");\n"); |
| 3722 | 3938 | |
| 3723 | | if (result_local == .none or !lowersToArray(ret_ty, target)) return result_local; |
| 3939 | const result = r: { |
| 3940 | if (result_local == .none or !lowersToArray(ret_ty, target)) |
| 3941 | break :r result_local; |
| 3724 | 3942 | |
| 3725 | | const array_local = try f.allocLocal(ret_ty, .Mut); |
| 3726 | | try writer.writeAll(";\n"); |
| 3727 | | try writer.writeAll("memcpy("); |
| 3728 | | try f.writeCValue(writer, array_local, .FunctionArgument); |
| 3729 | | try writer.writeAll(", "); |
| 3730 | | try f.writeCValueMember(writer, result_local, .{ .field = 0 }); |
| 3731 | | try writer.writeAll(", sizeof("); |
| 3732 | | try f.renderTypecast(writer, ret_ty); |
| 3733 | | try writer.writeAll("));\n"); |
| 3734 | | return array_local; |
| 3943 | const array_local = try f.allocLocal(inst, ret_ty); |
| 3944 | try writer.writeAll("memcpy("); |
| 3945 | try f.writeCValue(writer, array_local, .FunctionArgument); |
| 3946 | try writer.writeAll(", "); |
| 3947 | try f.writeCValueMember(writer, result_local, .{ .field = 0 }); |
| 3948 | try writer.writeAll(", sizeof("); |
| 3949 | try f.renderTypecast(writer, ret_ty); |
| 3950 | try writer.writeAll("));\n"); |
| 3951 | try freeLocal(f, inst, result_local.local, 0); |
| 3952 | break :r array_local; |
| 3953 | }; |
| 3954 | |
| 3955 | return result; |
| 3735 | 3956 | } |
| 3736 | 3957 | |
| 3737 | 3958 | fn airDbgStmt(f: *Function, inst: Air.Inst.Index) !CValue { |
| ... | ... | @@ -3763,6 +3984,7 @@ fn airDbgVar(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3763 | 3984 | const name = f.air.nullTerminatedString(pl_op.payload); |
| 3764 | 3985 | const operand = try f.resolveInst(pl_op.operand); |
| 3765 | 3986 | _ = operand; |
| 3987 | try reap(f, inst, &.{pl_op.operand}); |
| 3766 | 3988 | const writer = f.object.writer(); |
| 3767 | 3989 | try writer.print("/* var:{s} */\n", .{name}); |
| 3768 | 3990 | return CValue.none; |
| ... | ... | @@ -3778,12 +4000,10 @@ fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3778 | 4000 | const writer = f.object.writer(); |
| 3779 | 4001 | |
| 3780 | 4002 | const inst_ty = f.air.typeOfIndex(inst); |
| 3781 | | const result = if (inst_ty.tag() != .void and !f.liveness.isUnused(inst)) blk: { |
| 3782 | | // allocate a location for the result |
| 3783 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 3784 | | try writer.writeAll(";\n"); |
| 3785 | | break :blk local; |
| 3786 | | } else CValue{ .none = {} }; |
| 4003 | const result = if (inst_ty.tag() != .void and !f.liveness.isUnused(inst)) |
| 4004 | try f.allocLocal(inst, inst_ty) |
| 4005 | else |
| 4006 | CValue{ .none = {} }; |
| 3787 | 4007 | |
| 3788 | 4008 | try f.blocks.putNoClobber(f.object.dg.gpa, inst, .{ |
| 3789 | 4009 | .block_id = block_id, |
| ... | ... | @@ -3799,32 +4019,30 @@ fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3799 | 4019 | |
| 3800 | 4020 | fn airTry(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3801 | 4021 | const pl_op = f.air.instructions.items(.data)[inst].pl_op; |
| 3802 | | const err_union = try f.resolveInst(pl_op.operand); |
| 3803 | 4022 | const extra = f.air.extraData(Air.Try, pl_op.payload); |
| 3804 | 4023 | const body = f.air.extra[extra.end..][0..extra.data.body_len]; |
| 3805 | 4024 | const err_union_ty = f.air.typeOf(pl_op.operand); |
| 3806 | | const result_ty = f.air.typeOfIndex(inst); |
| 3807 | | return lowerTry(f, err_union, body, err_union_ty, false, result_ty); |
| 4025 | return lowerTry(f, inst, pl_op.operand, body, err_union_ty, false); |
| 3808 | 4026 | } |
| 3809 | 4027 | |
| 3810 | 4028 | fn airTryPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3811 | 4029 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 3812 | 4030 | const extra = f.air.extraData(Air.TryPtr, ty_pl.payload); |
| 3813 | | const err_union_ptr = try f.resolveInst(extra.data.ptr); |
| 3814 | 4031 | const body = f.air.extra[extra.end..][0..extra.data.body_len]; |
| 3815 | 4032 | const err_union_ty = f.air.typeOf(extra.data.ptr).childType(); |
| 3816 | | const result_ty = f.air.typeOfIndex(inst); |
| 3817 | | return lowerTry(f, err_union_ptr, body, err_union_ty, true, result_ty); |
| 4033 | return lowerTry(f, inst, extra.data.ptr, body, err_union_ty, true); |
| 3818 | 4034 | } |
| 3819 | 4035 | |
| 3820 | 4036 | fn lowerTry( |
| 3821 | 4037 | f: *Function, |
| 3822 | | err_union: CValue, |
| 4038 | inst: Air.Inst.Index, |
| 4039 | operand: Air.Inst.Ref, |
| 3823 | 4040 | body: []const Air.Inst.Index, |
| 3824 | 4041 | err_union_ty: Type, |
| 3825 | 4042 | operand_is_ptr: bool, |
| 3826 | | result_ty: Type, |
| 3827 | 4043 | ) !CValue { |
| 4044 | const err_union = try f.resolveInst(operand); |
| 4045 | const result_ty = f.air.typeOfIndex(inst); |
| 3828 | 4046 | const writer = f.object.writer(); |
| 3829 | 4047 | const payload_ty = err_union_ty.errorUnionPayload(); |
| 3830 | 4048 | const payload_has_bits = payload_ty.hasRuntimeBitsIgnoreComptime(); |
| ... | ... | @@ -3837,6 +4055,10 @@ fn lowerTry( |
| 3837 | 4055 | else |
| 3838 | 4056 | try f.writeCValue(writer, err_union, .Other); |
| 3839 | 4057 | } else { |
| 4058 | // Reap the operand so that it can be reused inside genBody. |
| 4059 | // Remember we must avoid calling reap() twice for the same operand |
| 4060 | // in this function. |
| 4061 | try reap(f, inst, &.{operand}); |
| 3840 | 4062 | if (operand_is_ptr or isByRef(err_union_ty)) |
| 3841 | 4063 | try f.writeCValueDerefMember(writer, err_union, .{ .identifier = "error" }) |
| 3842 | 4064 | else |
| ... | ... | @@ -3858,7 +4080,9 @@ fn lowerTry( |
| 3858 | 4080 | |
| 3859 | 4081 | const target = f.object.dg.module.getTarget(); |
| 3860 | 4082 | const is_array = lowersToArray(payload_ty, target); |
| 3861 | | const local = try f.allocLocal(result_ty, if (is_array) .Mut else .Const); |
| 4083 | try reap(f, inst, &.{operand}); |
| 4084 | const local = try f.allocLocal(inst, result_ty); |
| 4085 | try f.writeCValue(writer, local, .Other); |
| 3862 | 4086 | if (is_array) { |
| 3863 | 4087 | try writer.writeAll(";\n"); |
| 3864 | 4088 | try writer.writeAll("memcpy("); |
| ... | ... | @@ -3888,6 +4112,7 @@ fn airBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3888 | 4112 | // If result is .none then the value of the block is unused. |
| 3889 | 4113 | if (result != .none) { |
| 3890 | 4114 | const operand = try f.resolveInst(branch.operand); |
| 4115 | try reap(f, inst, &.{branch.operand}); |
| 3891 | 4116 | |
| 3892 | 4117 | const operand_ty = f.air.typeOf(branch.operand); |
| 3893 | 4118 | const target = f.object.dg.module.getTarget(); |
| ... | ... | @@ -3912,40 +4137,50 @@ fn airBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3912 | 4137 | } |
| 3913 | 4138 | |
| 3914 | 4139 | fn airBitcast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3915 | | const src_ty = f.air.typeOfIndex(inst); |
| 4140 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4141 | const dest_ty = f.air.typeOfIndex(inst); |
| 3916 | 4142 | // No IgnoreComptime until Sema stops giving us garbage Air. |
| 3917 | 4143 | // https://github.com/ziglang/zig/issues/13410 |
| 3918 | | if (f.liveness.isUnused(inst) or !src_ty.hasRuntimeBits()) return CValue.none; |
| 4144 | if (f.liveness.isUnused(inst) or !dest_ty.hasRuntimeBits()) { |
| 4145 | try reap(f, inst, &.{ty_op.operand}); |
| 4146 | return CValue.none; |
| 4147 | } |
| 3919 | 4148 | |
| 3920 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 3921 | 4149 | const operand = try f.resolveInst(ty_op.operand); |
| 3922 | | const dest_ty = f.air.typeOf(ty_op.operand); |
| 4150 | try reap(f, inst, &.{ty_op.operand}); |
| 4151 | const operand_ty = f.air.typeOf(ty_op.operand); |
| 3923 | 4152 | const target = f.object.dg.module.getTarget(); |
| 4153 | const writer = f.object.writer(); |
| 4154 | |
| 4155 | const local = try f.allocLocal(inst, dest_ty); |
| 3924 | 4156 | |
| 3925 | | if (dest_ty.isAbiInt() and src_ty.isAbiInt()) { |
| 3926 | | const src_info = src_ty.intInfo(target); |
| 3927 | | const dest_info = dest_ty.intInfo(target); |
| 3928 | | if (std.meta.eql(src_info, dest_info)) { |
| 3929 | | return operand; |
| 4157 | if (operand_ty.isAbiInt() and dest_ty.isAbiInt()) { |
| 4158 | const src_info = dest_ty.intInfo(target); |
| 4159 | const dest_info = operand_ty.intInfo(target); |
| 4160 | if (src_info.signedness == dest_info.signedness and |
| 4161 | src_info.bits == dest_info.bits) |
| 4162 | { |
| 4163 | try f.writeCValue(writer, local, .Other); |
| 4164 | try writer.writeAll(" = "); |
| 4165 | try f.writeCValue(writer, operand, .Other); |
| 4166 | try writer.writeAll(";\n"); |
| 4167 | return local; |
| 3930 | 4168 | } |
| 3931 | 4169 | } |
| 3932 | 4170 | |
| 3933 | | const writer = f.object.writer(); |
| 3934 | | if (src_ty.isPtrAtRuntime() and dest_ty.isPtrAtRuntime()) { |
| 3935 | | const local = try f.allocLocal(src_ty, .Const); |
| 4171 | if (dest_ty.isPtrAtRuntime() and operand_ty.isPtrAtRuntime()) { |
| 4172 | try f.writeCValue(writer, local, .Other); |
| 3936 | 4173 | try writer.writeAll(" = ("); |
| 3937 | | try f.renderTypecast(writer, src_ty); |
| 4174 | try f.renderTypecast(writer, dest_ty); |
| 3938 | 4175 | try writer.writeByte(')'); |
| 3939 | 4176 | try f.writeCValue(writer, operand, .Other); |
| 3940 | 4177 | try writer.writeAll(";\n"); |
| 3941 | 4178 | return local; |
| 3942 | 4179 | } |
| 3943 | 4180 | |
| 3944 | | const local = try f.allocLocal(src_ty, .Mut); |
| 3945 | | try writer.writeAll(";\n"); |
| 3946 | | |
| 3947 | 4181 | const operand_lval = if (operand == .constant) blk: { |
| 3948 | | const operand_local = try f.allocLocal(dest_ty, .Const); |
| 4182 | const operand_local = try f.allocLocal(inst, operand_ty); |
| 4183 | try f.writeCValue(writer, operand_local, .Other); |
| 3949 | 4184 | try writer.writeAll(" = "); |
| 3950 | 4185 | try f.writeCValue(writer, operand, .Initializer); |
| 3951 | 4186 | try writer.writeAll(";\n"); |
| ... | ... | @@ -3957,20 +4192,24 @@ fn airBitcast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3957 | 4192 | try writer.writeAll(", &"); |
| 3958 | 4193 | try f.writeCValue(writer, operand_lval, .Other); |
| 3959 | 4194 | try writer.writeAll(", sizeof("); |
| 3960 | | try f.renderTypecast(writer, src_ty); |
| 4195 | try f.renderTypecast(writer, dest_ty); |
| 3961 | 4196 | try writer.writeAll("));\n"); |
| 3962 | 4197 | |
| 3963 | 4198 | // Ensure padding bits have the expected value. |
| 3964 | | if (src_ty.isAbiInt()) { |
| 4199 | if (dest_ty.isAbiInt()) { |
| 3965 | 4200 | try f.writeCValue(writer, local, .Other); |
| 3966 | 4201 | try writer.writeAll(" = zig_wrap_"); |
| 3967 | | try f.object.dg.renderTypeForBuiltinFnName(writer, src_ty); |
| 4202 | try f.object.dg.renderTypeForBuiltinFnName(writer, dest_ty); |
| 3968 | 4203 | try writer.writeByte('('); |
| 3969 | 4204 | try f.writeCValue(writer, local, .Other); |
| 3970 | | try f.object.dg.renderBuiltinInfo(writer, src_ty, .Bits); |
| 4205 | try f.object.dg.renderBuiltinInfo(writer, dest_ty, .Bits); |
| 3971 | 4206 | try writer.writeAll(");\n"); |
| 3972 | 4207 | } |
| 3973 | 4208 | |
| 4209 | if (operand == .constant) { |
| 4210 | try freeLocal(f, inst, operand_lval.local, 0); |
| 4211 | } |
| 4212 | |
| 3974 | 4213 | return local; |
| 3975 | 4214 | } |
| 3976 | 4215 | |
| ... | ... | @@ -3982,7 +4221,8 @@ fn airBreakpoint(writer: anytype) !CValue { |
| 3982 | 4221 | fn airRetAddr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3983 | 4222 | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3984 | 4223 | const writer = f.object.writer(); |
| 3985 | | const local = try f.allocLocal(Type.usize, .Const); |
| 4224 | const local = try f.allocLocal(inst, Type.usize); |
| 4225 | try f.writeCValue(writer, local, .Other); |
| 3986 | 4226 | try writer.writeAll(" = ("); |
| 3987 | 4227 | try f.renderTypecast(writer, Type.usize); |
| 3988 | 4228 | try writer.writeAll(")zig_return_address();\n"); |
| ... | ... | @@ -3992,7 +4232,8 @@ fn airRetAddr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3992 | 4232 | fn airFrameAddress(f: *Function, inst: Air.Inst.Index) !CValue { |
| 3993 | 4233 | if (f.liveness.isUnused(inst)) return CValue.none; |
| 3994 | 4234 | const writer = f.object.writer(); |
| 3995 | | const local = try f.allocLocal(Type.usize, .Const); |
| 4235 | const local = try f.allocLocal(inst, Type.usize); |
| 4236 | try f.writeCValue(writer, local, .Other); |
| 3996 | 4237 | try writer.writeAll(" = ("); |
| 3997 | 4238 | try f.renderTypecast(writer, Type.usize); |
| 3998 | 4239 | try writer.writeAll(")zig_frame_address();\n"); |
| ... | ... | @@ -4023,9 +4264,7 @@ fn airLoop(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4023 | 4264 | const loop = f.air.extraData(Air.Block, ty_pl.payload); |
| 4024 | 4265 | const body = f.air.extra[loop.end..][0..loop.data.body_len]; |
| 4025 | 4266 | const writer = f.object.writer(); |
| 4026 | | try writer.writeAll("while ("); |
| 4027 | | try f.object.dg.renderValue(writer, Type.bool, Value.true, .Other); |
| 4028 | | try writer.writeAll(") "); |
| 4267 | try writer.writeAll("for (;;) "); |
| 4029 | 4268 | try genBody(f, body); |
| 4030 | 4269 | try writer.writeByte('\n'); |
| 4031 | 4270 | return CValue.none; |
| ... | ... | @@ -4034,16 +4273,29 @@ fn airLoop(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4034 | 4273 | fn airCondBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4035 | 4274 | const pl_op = f.air.instructions.items(.data)[inst].pl_op; |
| 4036 | 4275 | const cond = try f.resolveInst(pl_op.operand); |
| 4276 | try reap(f, inst, &.{pl_op.operand}); |
| 4037 | 4277 | const extra = f.air.extraData(Air.CondBr, pl_op.payload); |
| 4038 | 4278 | const then_body = f.air.extra[extra.end..][0..extra.data.then_body_len]; |
| 4039 | 4279 | const else_body = f.air.extra[extra.end + then_body.len ..][0..extra.data.else_body_len]; |
| 4040 | 4280 | const writer = f.object.writer(); |
| 4041 | 4281 | |
| 4282 | // Keep using the original for the then branch; use a clone of the value |
| 4283 | // map for the else branch. |
| 4284 | const gpa = f.object.dg.gpa; |
| 4285 | var cloned_map = try f.value_map.clone(); |
| 4286 | defer cloned_map.deinit(); |
| 4287 | var cloned_frees = try f.free_locals.clone(gpa); |
| 4288 | defer cloned_frees.deinit(gpa); |
| 4289 | |
| 4042 | 4290 | try writer.writeAll("if ("); |
| 4043 | 4291 | try f.writeCValue(writer, cond, .Other); |
| 4044 | 4292 | try writer.writeAll(") "); |
| 4045 | 4293 | try genBody(f, then_body); |
| 4046 | 4294 | try writer.writeAll(" else "); |
| 4295 | f.value_map.deinit(); |
| 4296 | f.value_map = cloned_map.move(); |
| 4297 | f.free_locals.deinit(gpa); |
| 4298 | f.free_locals = cloned_frees.move(); |
| 4047 | 4299 | try genBody(f, else_body); |
| 4048 | 4300 | try f.object.indent_writer.insertNewline(); |
| 4049 | 4301 | |
| ... | ... | @@ -4053,6 +4305,7 @@ fn airCondBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4053 | 4305 | fn airSwitchBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4054 | 4306 | const pl_op = f.air.instructions.items(.data)[inst].pl_op; |
| 4055 | 4307 | const condition = try f.resolveInst(pl_op.operand); |
| 4308 | try reap(f, inst, &.{pl_op.operand}); |
| 4056 | 4309 | const condition_ty = f.air.typeOf(pl_op.operand); |
| 4057 | 4310 | const switch_br = f.air.extraData(Air.SwitchBr, pl_op.payload); |
| 4058 | 4311 | const writer = f.object.writer(); |
| ... | ... | @@ -4071,6 +4324,7 @@ fn airSwitchBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4071 | 4324 | try writer.writeAll(") {"); |
| 4072 | 4325 | f.object.indent_writer.pushIndent(); |
| 4073 | 4326 | |
| 4327 | const gpa = f.object.dg.gpa; |
| 4074 | 4328 | var extra_index: usize = switch_br.end; |
| 4075 | 4329 | var case_i: u32 = 0; |
| 4076 | 4330 | while (case_i < switch_br.data.cases_len) : (case_i += 1) { |
| ... | ... | @@ -4090,8 +4344,25 @@ fn airSwitchBr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4090 | 4344 | try f.object.dg.renderValue(writer, condition_ty, f.air.value(item).?, .Other); |
| 4091 | 4345 | try writer.writeAll(": "); |
| 4092 | 4346 | } |
| 4347 | // On the final iteration we do not clone the map. This ensures that |
| 4348 | // lowering proceeds after the switch_br taking into account the |
| 4349 | // mutations to the liveness information. |
| 4093 | 4350 | // The case body must be noreturn so we don't need to insert a break. |
| 4094 | | try genBody(f, case_body); |
| 4351 | if (case_i < switch_br.data.cases_len - 1) { |
| 4352 | const old_value_map = f.value_map; |
| 4353 | f.value_map = try old_value_map.clone(); |
| 4354 | const old_free_locals = f.free_locals; |
| 4355 | f.free_locals = try f.free_locals.clone(gpa); |
| 4356 | defer { |
| 4357 | f.value_map.deinit(); |
| 4358 | f.free_locals.deinit(gpa); |
| 4359 | f.value_map = old_value_map; |
| 4360 | f.free_locals = old_free_locals; |
| 4361 | } |
| 4362 | try genBody(f, case_body); |
| 4363 | } else { |
| 4364 | try genBody(f, case_body); |
| 4365 | } |
| 4095 | 4366 | } |
| 4096 | 4367 | |
| 4097 | 4368 | const else_body = f.air.extra[extra_index..][0..switch_br.data.else_body_len]; |
| ... | ... | @@ -4124,235 +4395,269 @@ fn airAsm(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4124 | 4395 | const inputs = @ptrCast([]const Air.Inst.Ref, f.air.extra[extra_i..][0..extra.data.inputs_len]); |
| 4125 | 4396 | extra_i += inputs.len; |
| 4126 | 4397 | |
| 4127 | | if (!is_volatile and f.liveness.isUnused(inst)) return CValue.none; |
| 4128 | | |
| 4129 | | const writer = f.object.writer(); |
| 4130 | | const inst_ty = f.air.typeOfIndex(inst); |
| 4131 | | const local = if (inst_ty.hasRuntimeBitsIgnoreComptime()) local: { |
| 4132 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 4133 | | if (f.wantSafety()) { |
| 4134 | | try writer.writeAll(" = "); |
| 4135 | | try f.writeCValue(writer, .{ .undef = inst_ty }, .Initializer); |
| 4136 | | } |
| 4137 | | try writer.writeAll(";\n"); |
| 4138 | | break :local local; |
| 4139 | | } else .none; |
| 4140 | | |
| 4141 | | const locals_begin = f.next_local_index; |
| 4142 | | const constraints_extra_begin = extra_i; |
| 4143 | | for (outputs) |output| { |
| 4144 | | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4145 | | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4146 | | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4147 | | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4148 | | // for the string, we still use the next u32 for the null terminator. |
| 4149 | | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4150 | | |
| 4151 | | if (constraint.len < 2 or constraint[0] != '=' or |
| 4152 | | (constraint[1] == '{' and constraint[constraint.len - 1] != '}')) |
| 4153 | | { |
| 4154 | | return f.fail("CBE: constraint not supported: '{s}'", .{constraint}); |
| 4155 | | } |
| 4398 | const result: CValue = r: { |
| 4399 | if (!is_volatile and f.liveness.isUnused(inst)) break :r CValue.none; |
| 4156 | 4400 | |
| 4157 | | const is_reg = constraint[1] == '{'; |
| 4158 | | if (is_reg) { |
| 4159 | | const output_ty = if (output == .none) inst_ty else f.air.typeOf(output).childType(); |
| 4160 | | try writer.writeAll("register "); |
| 4161 | | _ = try f.allocLocal(output_ty, .Mut); |
| 4162 | | try writer.writeAll(" __asm(\""); |
| 4163 | | try writer.writeAll(constraint["={".len .. constraint.len - "}".len]); |
| 4164 | | try writer.writeAll("\")"); |
| 4401 | const writer = f.object.writer(); |
| 4402 | const inst_ty = f.air.typeOfIndex(inst); |
| 4403 | const local = if (inst_ty.hasRuntimeBitsIgnoreComptime()) local: { |
| 4404 | // TODO free this after using it |
| 4405 | const local = try f.allocLocal(inst, inst_ty); |
| 4165 | 4406 | if (f.wantSafety()) { |
| 4407 | try f.writeCValue(writer, local, .Other); |
| 4166 | 4408 | try writer.writeAll(" = "); |
| 4167 | | try f.writeCValue(writer, .{ .undef = output_ty }, .Initializer); |
| 4409 | try f.writeCValue(writer, .{ .undef = inst_ty }, .Initializer); |
| 4410 | try writer.writeAll(";\n"); |
| 4411 | } |
| 4412 | break :local local; |
| 4413 | } else .none; |
| 4414 | |
| 4415 | const locals_begin = @intCast(LocalIndex, f.locals.items.len); |
| 4416 | const constraints_extra_begin = extra_i; |
| 4417 | for (outputs) |output| { |
| 4418 | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4419 | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4420 | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4421 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4422 | // for the string, we still use the next u32 for the null terminator. |
| 4423 | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4424 | |
| 4425 | if (constraint.len < 2 or constraint[0] != '=' or |
| 4426 | (constraint[1] == '{' and constraint[constraint.len - 1] != '}')) |
| 4427 | { |
| 4428 | return f.fail("CBE: constraint not supported: '{s}'", .{constraint}); |
| 4168 | 4429 | } |
| 4169 | | try writer.writeAll(";\n"); |
| 4170 | | } |
| 4171 | | } |
| 4172 | | for (inputs) |input| { |
| 4173 | | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4174 | | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4175 | | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4176 | | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4177 | | // for the string, we still use the next u32 for the null terminator. |
| 4178 | | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4179 | | |
| 4180 | | if (constraint.len < 1 or std.mem.indexOfScalar(u8, "=+&%", constraint[0]) != null or |
| 4181 | | (constraint[0] == '{' and constraint[constraint.len - 1] != '}')) |
| 4182 | | { |
| 4183 | | return f.fail("CBE: constraint not supported: '{s}'", .{constraint}); |
| 4184 | | } |
| 4185 | 4430 | |
| 4186 | | const is_reg = constraint[0] == '{'; |
| 4187 | | const input_val = try f.resolveInst(input); |
| 4188 | | if (asmInputNeedsLocal(constraint, input_val)) { |
| 4189 | | const input_ty = f.air.typeOf(input); |
| 4190 | | if (is_reg) try writer.writeAll("register "); |
| 4191 | | _ = try f.allocLocal(input_ty, .Const); |
| 4431 | const is_reg = constraint[1] == '{'; |
| 4192 | 4432 | if (is_reg) { |
| 4433 | const output_ty = if (output == .none) inst_ty else f.air.typeOf(output).childType(); |
| 4434 | try writer.writeAll("register "); |
| 4435 | const alignment = 0; |
| 4436 | const local_value = try f.allocLocalValue(output_ty, alignment); |
| 4437 | try f.object.dg.renderTypeAndName( |
| 4438 | writer, |
| 4439 | output_ty, |
| 4440 | local_value, |
| 4441 | .Mut, |
| 4442 | alignment, |
| 4443 | .Complete, |
| 4444 | ); |
| 4193 | 4445 | try writer.writeAll(" __asm(\""); |
| 4194 | | try writer.writeAll(constraint["{".len .. constraint.len - "}".len]); |
| 4446 | try writer.writeAll(constraint["={".len .. constraint.len - "}".len]); |
| 4195 | 4447 | try writer.writeAll("\")"); |
| 4448 | if (f.wantSafety()) { |
| 4449 | try writer.writeAll(" = "); |
| 4450 | try f.writeCValue(writer, .{ .undef = output_ty }, .Initializer); |
| 4451 | } |
| 4452 | try writer.writeAll(";\n"); |
| 4196 | 4453 | } |
| 4197 | | try writer.writeAll(" = "); |
| 4198 | | try f.writeCValue(writer, input_val, .Initializer); |
| 4199 | | try writer.writeAll(";\n"); |
| 4200 | 4454 | } |
| 4201 | | } |
| 4202 | | { |
| 4203 | | var clobber_i: u32 = 0; |
| 4204 | | while (clobber_i < clobbers_len) : (clobber_i += 1) { |
| 4205 | | const clobber = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); |
| 4455 | for (inputs) |input| { |
| 4456 | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4457 | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4458 | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4206 | 4459 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4207 | 4460 | // for the string, we still use the next u32 for the null terminator. |
| 4208 | | extra_i += clobber.len / 4 + 1; |
| 4209 | | } |
| 4210 | | } |
| 4211 | | { |
| 4212 | | const asm_source = mem.sliceAsBytes(f.air.extra[extra_i..])[0..extra.data.source_len]; |
| 4461 | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4213 | 4462 | |
| 4214 | | var stack = std.heap.stackFallback(256, f.object.dg.gpa); |
| 4215 | | const allocator = stack.get(); |
| 4216 | | const fixed_asm_source = try allocator.alloc(u8, asm_source.len); |
| 4217 | | defer allocator.free(fixed_asm_source); |
| 4463 | if (constraint.len < 1 or std.mem.indexOfScalar(u8, "=+&%", constraint[0]) != null or |
| 4464 | (constraint[0] == '{' and constraint[constraint.len - 1] != '}')) |
| 4465 | { |
| 4466 | return f.fail("CBE: constraint not supported: '{s}'", .{constraint}); |
| 4467 | } |
| 4218 | 4468 | |
| 4219 | | var src_i: usize = 0; |
| 4220 | | var dst_i: usize = 0; |
| 4221 | | while (true) { |
| 4222 | | const literal = mem.sliceTo(asm_source[src_i..], '%'); |
| 4223 | | src_i += literal.len; |
| 4469 | const is_reg = constraint[0] == '{'; |
| 4470 | const input_val = try f.resolveInst(input); |
| 4471 | if (asmInputNeedsLocal(constraint, input_val)) { |
| 4472 | const input_ty = f.air.typeOf(input); |
| 4473 | if (is_reg) try writer.writeAll("register "); |
| 4474 | const alignment = 0; |
| 4475 | const local_value = try f.allocLocalValue(input_ty, alignment); |
| 4476 | try f.object.dg.renderTypeAndName( |
| 4477 | writer, |
| 4478 | input_ty, |
| 4479 | local_value, |
| 4480 | .Const, |
| 4481 | alignment, |
| 4482 | .Complete, |
| 4483 | ); |
| 4484 | if (is_reg) { |
| 4485 | try writer.writeAll(" __asm(\""); |
| 4486 | try writer.writeAll(constraint["{".len .. constraint.len - "}".len]); |
| 4487 | try writer.writeAll("\")"); |
| 4488 | } |
| 4489 | try writer.writeAll(" = "); |
| 4490 | try f.writeCValue(writer, input_val, .Initializer); |
| 4491 | try writer.writeAll(";\n"); |
| 4492 | } |
| 4493 | } |
| 4494 | { |
| 4495 | var clobber_i: u32 = 0; |
| 4496 | while (clobber_i < clobbers_len) : (clobber_i += 1) { |
| 4497 | const clobber = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); |
| 4498 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4499 | // for the string, we still use the next u32 for the null terminator. |
| 4500 | extra_i += clobber.len / 4 + 1; |
| 4501 | } |
| 4502 | } |
| 4503 | |
| 4504 | { |
| 4505 | const asm_source = mem.sliceAsBytes(f.air.extra[extra_i..])[0..extra.data.source_len]; |
| 4224 | 4506 | |
| 4225 | | mem.copy(u8, fixed_asm_source[dst_i..], literal); |
| 4226 | | dst_i += literal.len; |
| 4507 | var stack = std.heap.stackFallback(256, f.object.dg.gpa); |
| 4508 | const allocator = stack.get(); |
| 4509 | const fixed_asm_source = try allocator.alloc(u8, asm_source.len); |
| 4510 | defer allocator.free(fixed_asm_source); |
| 4227 | 4511 | |
| 4228 | | if (src_i >= asm_source.len) break; |
| 4512 | var src_i: usize = 0; |
| 4513 | var dst_i: usize = 0; |
| 4514 | while (true) { |
| 4515 | const literal = mem.sliceTo(asm_source[src_i..], '%'); |
| 4516 | src_i += literal.len; |
| 4229 | 4517 | |
| 4230 | | src_i += 1; |
| 4231 | | if (src_i >= asm_source.len) |
| 4232 | | return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source}); |
| 4518 | mem.copy(u8, fixed_asm_source[dst_i..], literal); |
| 4519 | dst_i += literal.len; |
| 4233 | 4520 | |
| 4234 | | fixed_asm_source[dst_i] = '%'; |
| 4235 | | dst_i += 1; |
| 4521 | if (src_i >= asm_source.len) break; |
| 4236 | 4522 | |
| 4237 | | if (asm_source[src_i] != '[') { |
| 4238 | | // This also handles %% |
| 4239 | | fixed_asm_source[dst_i] = asm_source[src_i]; |
| 4240 | 4523 | src_i += 1; |
| 4524 | if (src_i >= asm_source.len) |
| 4525 | return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source}); |
| 4526 | |
| 4527 | fixed_asm_source[dst_i] = '%'; |
| 4241 | 4528 | dst_i += 1; |
| 4242 | | continue; |
| 4243 | | } |
| 4244 | 4529 | |
| 4245 | | const desc = mem.sliceTo(asm_source[src_i..], ']'); |
| 4246 | | if (mem.indexOfScalar(u8, desc, ':')) |colon| { |
| 4247 | | const name = desc[0..colon]; |
| 4248 | | const modifier = desc[colon + 1 ..]; |
| 4530 | if (asm_source[src_i] != '[') { |
| 4531 | // This also handles %% |
| 4532 | fixed_asm_source[dst_i] = asm_source[src_i]; |
| 4533 | src_i += 1; |
| 4534 | dst_i += 1; |
| 4535 | continue; |
| 4536 | } |
| 4249 | 4537 | |
| 4250 | | mem.copy(u8, fixed_asm_source[dst_i..], modifier); |
| 4251 | | dst_i += modifier.len; |
| 4252 | | mem.copy(u8, fixed_asm_source[dst_i..], name); |
| 4253 | | dst_i += name.len; |
| 4538 | const desc = mem.sliceTo(asm_source[src_i..], ']'); |
| 4539 | if (mem.indexOfScalar(u8, desc, ':')) |colon| { |
| 4540 | const name = desc[0..colon]; |
| 4541 | const modifier = desc[colon + 1 ..]; |
| 4254 | 4542 | |
| 4255 | | src_i += desc.len; |
| 4256 | | if (src_i >= asm_source.len) |
| 4257 | | return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source}); |
| 4543 | mem.copy(u8, fixed_asm_source[dst_i..], modifier); |
| 4544 | dst_i += modifier.len; |
| 4545 | mem.copy(u8, fixed_asm_source[dst_i..], name); |
| 4546 | dst_i += name.len; |
| 4547 | |
| 4548 | src_i += desc.len; |
| 4549 | if (src_i >= asm_source.len) |
| 4550 | return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source}); |
| 4551 | } |
| 4258 | 4552 | } |
| 4553 | |
| 4554 | try writer.writeAll("__asm"); |
| 4555 | if (is_volatile) try writer.writeAll(" volatile"); |
| 4556 | try writer.print("({s}", .{fmtStringLiteral(fixed_asm_source[0..dst_i])}); |
| 4259 | 4557 | } |
| 4260 | 4558 | |
| 4261 | | try writer.writeAll("__asm"); |
| 4262 | | if (is_volatile) try writer.writeAll(" volatile"); |
| 4263 | | try writer.print("({s}", .{fmtStringLiteral(fixed_asm_source[0..dst_i])}); |
| 4264 | | } |
| 4265 | | |
| 4266 | | extra_i = constraints_extra_begin; |
| 4267 | | var locals_index = locals_begin; |
| 4268 | | try writer.writeByte(':'); |
| 4269 | | for (outputs) |output, index| { |
| 4270 | | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4271 | | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4272 | | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4273 | | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4274 | | // for the string, we still use the next u32 for the null terminator. |
| 4275 | | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4276 | | |
| 4277 | | if (index > 0) try writer.writeByte(','); |
| 4278 | | try writer.writeByte(' '); |
| 4279 | | if (!std.mem.eql(u8, name, "_")) try writer.print("[{s}]", .{name}); |
| 4280 | | const is_reg = constraint[1] == '{'; |
| 4281 | | try writer.print("{s}(", .{fmtStringLiteral(if (is_reg) "=r" else constraint)}); |
| 4282 | | if (is_reg) { |
| 4283 | | try f.writeCValue(writer, .{ .local = locals_index }, .Other); |
| 4284 | | locals_index += 1; |
| 4285 | | } else if (output == .none) { |
| 4286 | | try f.writeCValue(writer, local, .FunctionArgument); |
| 4287 | | } else { |
| 4288 | | try f.writeCValueDeref(writer, try f.resolveInst(output)); |
| 4559 | extra_i = constraints_extra_begin; |
| 4560 | var locals_index = locals_begin; |
| 4561 | try writer.writeByte(':'); |
| 4562 | for (outputs) |output, index| { |
| 4563 | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4564 | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4565 | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4566 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4567 | // for the string, we still use the next u32 for the null terminator. |
| 4568 | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4569 | |
| 4570 | if (index > 0) try writer.writeByte(','); |
| 4571 | try writer.writeByte(' '); |
| 4572 | if (!std.mem.eql(u8, name, "_")) try writer.print("[{s}]", .{name}); |
| 4573 | const is_reg = constraint[1] == '{'; |
| 4574 | try writer.print("{s}(", .{fmtStringLiteral(if (is_reg) "=r" else constraint)}); |
| 4575 | if (is_reg) { |
| 4576 | try f.writeCValue(writer, .{ .local = locals_index }, .Other); |
| 4577 | locals_index += 1; |
| 4578 | } else if (output == .none) { |
| 4579 | try f.writeCValue(writer, local, .FunctionArgument); |
| 4580 | } else { |
| 4581 | try f.writeCValueDeref(writer, try f.resolveInst(output)); |
| 4582 | } |
| 4583 | try writer.writeByte(')'); |
| 4289 | 4584 | } |
| 4290 | | try writer.writeByte(')'); |
| 4291 | | } |
| 4292 | | try writer.writeByte(':'); |
| 4293 | | for (inputs) |input, index| { |
| 4294 | | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4295 | | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4296 | | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4297 | | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4298 | | // for the string, we still use the next u32 for the null terminator. |
| 4299 | | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4300 | | |
| 4301 | | if (index > 0) try writer.writeByte(','); |
| 4302 | | try writer.writeByte(' '); |
| 4303 | | if (!std.mem.eql(u8, name, "_")) try writer.print("[{s}]", .{name}); |
| 4304 | | |
| 4305 | | const is_reg = constraint[0] == '{'; |
| 4306 | | const input_val = try f.resolveInst(input); |
| 4307 | | try writer.print("{s}(", .{fmtStringLiteral(if (is_reg) "r" else constraint)}); |
| 4308 | | try f.writeCValue(writer, if (asmInputNeedsLocal(constraint, input_val)) local: { |
| 4309 | | const input_local = CValue{ .local = locals_index }; |
| 4310 | | locals_index += 1; |
| 4311 | | break :local input_local; |
| 4312 | | } else input_val, .Other); |
| 4313 | | try writer.writeByte(')'); |
| 4314 | | } |
| 4315 | | try writer.writeByte(':'); |
| 4316 | | { |
| 4317 | | var clobber_i: u32 = 0; |
| 4318 | | while (clobber_i < clobbers_len) : (clobber_i += 1) { |
| 4319 | | const clobber = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); |
| 4585 | try writer.writeByte(':'); |
| 4586 | for (inputs) |input, index| { |
| 4587 | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4588 | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4589 | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4320 | 4590 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4321 | 4591 | // for the string, we still use the next u32 for the null terminator. |
| 4322 | | extra_i += clobber.len / 4 + 1; |
| 4592 | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4593 | |
| 4594 | if (index > 0) try writer.writeByte(','); |
| 4595 | try writer.writeByte(' '); |
| 4596 | if (!std.mem.eql(u8, name, "_")) try writer.print("[{s}]", .{name}); |
| 4597 | |
| 4598 | const is_reg = constraint[0] == '{'; |
| 4599 | const input_val = try f.resolveInst(input); |
| 4600 | try writer.print("{s}(", .{fmtStringLiteral(if (is_reg) "r" else constraint)}); |
| 4601 | try f.writeCValue(writer, if (asmInputNeedsLocal(constraint, input_val)) local: { |
| 4602 | const input_local = CValue{ .local = locals_index }; |
| 4603 | locals_index += 1; |
| 4604 | break :local input_local; |
| 4605 | } else input_val, .Other); |
| 4606 | try writer.writeByte(')'); |
| 4607 | } |
| 4608 | try writer.writeByte(':'); |
| 4609 | { |
| 4610 | var clobber_i: u32 = 0; |
| 4611 | while (clobber_i < clobbers_len) : (clobber_i += 1) { |
| 4612 | const clobber = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); |
| 4613 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4614 | // for the string, we still use the next u32 for the null terminator. |
| 4615 | extra_i += clobber.len / 4 + 1; |
| 4323 | 4616 | |
| 4324 | | if (clobber.len == 0) continue; |
| 4617 | if (clobber.len == 0) continue; |
| 4325 | 4618 | |
| 4326 | | if (clobber_i > 0) try writer.writeByte(','); |
| 4327 | | try writer.print(" {s}", .{fmtStringLiteral(clobber)}); |
| 4619 | if (clobber_i > 0) try writer.writeByte(','); |
| 4620 | try writer.print(" {s}", .{fmtStringLiteral(clobber)}); |
| 4621 | } |
| 4328 | 4622 | } |
| 4329 | | } |
| 4330 | | try writer.writeAll(");\n"); |
| 4623 | try writer.writeAll(");\n"); |
| 4331 | 4624 | |
| 4332 | | extra_i = constraints_extra_begin; |
| 4333 | | locals_index = locals_begin; |
| 4334 | | for (outputs) |output| { |
| 4335 | | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4336 | | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4337 | | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4338 | | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4339 | | // for the string, we still use the next u32 for the null terminator. |
| 4340 | | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4341 | | |
| 4342 | | const is_reg = constraint[1] == '{'; |
| 4343 | | if (is_reg) { |
| 4344 | | try f.writeCValueDeref(writer, if (output == .none) |
| 4345 | | CValue{ .local_ref = local.local } |
| 4346 | | else |
| 4347 | | try f.resolveInst(output)); |
| 4348 | | try writer.writeAll(" = "); |
| 4349 | | try f.writeCValue(writer, .{ .local = locals_index }, .Other); |
| 4350 | | locals_index += 1; |
| 4351 | | try writer.writeAll(";\n"); |
| 4625 | extra_i = constraints_extra_begin; |
| 4626 | locals_index = locals_begin; |
| 4627 | for (outputs) |output| { |
| 4628 | const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); |
| 4629 | const constraint = std.mem.sliceTo(extra_bytes, 0); |
| 4630 | const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); |
| 4631 | // This equation accounts for the fact that even if we have exactly 4 bytes |
| 4632 | // for the string, we still use the next u32 for the null terminator. |
| 4633 | extra_i += (constraint.len + name.len + (2 + 3)) / 4; |
| 4634 | |
| 4635 | const is_reg = constraint[1] == '{'; |
| 4636 | if (is_reg) { |
| 4637 | try f.writeCValueDeref(writer, if (output == .none) |
| 4638 | CValue{ .local_ref = local.local } |
| 4639 | else |
| 4640 | try f.resolveInst(output)); |
| 4641 | try writer.writeAll(" = "); |
| 4642 | try f.writeCValue(writer, .{ .local = locals_index }, .Other); |
| 4643 | locals_index += 1; |
| 4644 | try writer.writeAll(";\n"); |
| 4645 | } |
| 4352 | 4646 | } |
| 4647 | |
| 4648 | break :r local; |
| 4649 | }; |
| 4650 | |
| 4651 | var bt = iterateBigTomb(f, inst); |
| 4652 | for (outputs) |output| { |
| 4653 | if (output == .none) continue; |
| 4654 | try bt.feed(output); |
| 4655 | } |
| 4656 | for (inputs) |input| { |
| 4657 | try bt.feed(input); |
| 4353 | 4658 | } |
| 4354 | 4659 | |
| 4355 | | return local; |
| 4660 | return result; |
| 4356 | 4661 | } |
| 4357 | 4662 | |
| 4358 | 4663 | fn airIsNull( |
| ... | ... | @@ -4361,16 +4666,25 @@ fn airIsNull( |
| 4361 | 4666 | operator: []const u8, |
| 4362 | 4667 | is_ptr: bool, |
| 4363 | 4668 | ) !CValue { |
| 4364 | | if (f.liveness.isUnused(inst)) |
| 4669 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 4670 | |
| 4671 | if (f.liveness.isUnused(inst)) { |
| 4672 | try reap(f, inst, &.{un_op}); |
| 4365 | 4673 | return CValue.none; |
| 4674 | } |
| 4366 | 4675 | |
| 4367 | | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 4368 | 4676 | const writer = f.object.writer(); |
| 4369 | 4677 | const operand = try f.resolveInst(un_op); |
| 4678 | try reap(f, inst, &.{un_op}); |
| 4370 | 4679 | |
| 4371 | | const local = try f.allocLocal(Type.initTag(.bool), .Const); |
| 4680 | const local = try f.allocLocal(inst, Type.bool); |
| 4681 | try f.writeCValue(writer, local, .Other); |
| 4372 | 4682 | try writer.writeAll(" = "); |
| 4373 | | try if (is_ptr) f.writeCValueDeref(writer, operand) else f.writeCValue(writer, operand, .Other); |
| 4683 | if (is_ptr) { |
| 4684 | try f.writeCValueDeref(writer, operand); |
| 4685 | } else { |
| 4686 | try f.writeCValue(writer, operand, .Other); |
| 4687 | } |
| 4374 | 4688 | |
| 4375 | 4689 | const operand_ty = f.air.typeOf(un_op); |
| 4376 | 4690 | const optional_ty = if (is_ptr) operand_ty.childType() else operand_ty; |
| ... | ... | @@ -4402,30 +4716,47 @@ fn airIsNull( |
| 4402 | 4716 | } |
| 4403 | 4717 | |
| 4404 | 4718 | fn airOptionalPayload(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4405 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 4406 | | |
| 4407 | 4719 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4720 | |
| 4721 | if (f.liveness.isUnused(inst)) { |
| 4722 | try reap(f, inst, &.{ty_op.operand}); |
| 4723 | return CValue.none; |
| 4724 | } |
| 4725 | |
| 4408 | 4726 | const operand = try f.resolveInst(ty_op.operand); |
| 4727 | try reap(f, inst, &.{ty_op.operand}); |
| 4409 | 4728 | const opt_ty = f.air.typeOf(ty_op.operand); |
| 4410 | 4729 | |
| 4411 | 4730 | var buf: Type.Payload.ElemType = undefined; |
| 4412 | 4731 | const payload_ty = opt_ty.optionalChild(&buf); |
| 4413 | 4732 | |
| 4414 | | if (!payload_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 4415 | | if (opt_ty.optionalReprIsPayload()) return operand; |
| 4733 | if (!payload_ty.hasRuntimeBitsIgnoreComptime()) { |
| 4734 | return CValue.none; |
| 4735 | } |
| 4416 | 4736 | |
| 4417 | 4737 | const inst_ty = f.air.typeOfIndex(inst); |
| 4738 | const local = try f.allocLocal(inst, inst_ty); |
| 4739 | const writer = f.object.writer(); |
| 4740 | |
| 4741 | if (opt_ty.optionalReprIsPayload()) { |
| 4742 | try f.writeCValue(writer, local, .Other); |
| 4743 | try writer.writeAll(" = "); |
| 4744 | try f.writeCValue(writer, operand, .Other); |
| 4745 | try writer.writeAll(";\n"); |
| 4746 | return local; |
| 4747 | } |
| 4748 | |
| 4418 | 4749 | const target = f.object.dg.module.getTarget(); |
| 4419 | 4750 | const is_array = lowersToArray(inst_ty, target); |
| 4420 | 4751 | |
| 4421 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 4422 | | const writer = f.object.writer(); |
| 4423 | 4752 | if (is_array) { |
| 4424 | | try writer.writeAll(";\n"); |
| 4425 | 4753 | try writer.writeAll("memcpy("); |
| 4426 | 4754 | try f.writeCValue(writer, local, .FunctionArgument); |
| 4427 | 4755 | try writer.writeAll(", "); |
| 4428 | | } else try writer.writeAll(" = "); |
| 4756 | } else { |
| 4757 | try f.writeCValue(writer, local, .Other); |
| 4758 | try writer.writeAll(" = "); |
| 4759 | } |
| 4429 | 4760 | try f.writeCValueMember(writer, operand, .{ .identifier = "payload" }); |
| 4430 | 4761 | if (is_array) { |
| 4431 | 4762 | try writer.writeAll(", sizeof("); |
| ... | ... | @@ -4437,11 +4768,16 @@ fn airOptionalPayload(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4437 | 4768 | } |
| 4438 | 4769 | |
| 4439 | 4770 | fn airOptionalPayloadPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4440 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 4441 | | |
| 4442 | 4771 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4772 | |
| 4773 | if (f.liveness.isUnused(inst)) { |
| 4774 | try reap(f, inst, &.{ty_op.operand}); |
| 4775 | return CValue.none; |
| 4776 | } |
| 4777 | |
| 4443 | 4778 | const writer = f.object.writer(); |
| 4444 | 4779 | const operand = try f.resolveInst(ty_op.operand); |
| 4780 | try reap(f, inst, &.{ty_op.operand}); |
| 4445 | 4781 | const ptr_ty = f.air.typeOf(ty_op.operand); |
| 4446 | 4782 | const opt_ty = ptr_ty.childType(); |
| 4447 | 4783 | const inst_ty = f.air.typeOfIndex(inst); |
| ... | ... | @@ -4456,7 +4792,8 @@ fn airOptionalPayloadPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4456 | 4792 | return operand; |
| 4457 | 4793 | } |
| 4458 | 4794 | |
| 4459 | | const local = try f.allocLocal(inst_ty, .Const); |
| 4795 | const local = try f.allocLocal(inst, inst_ty); |
| 4796 | try f.writeCValue(writer, local, .Other); |
| 4460 | 4797 | try writer.writeAll(" = &"); |
| 4461 | 4798 | try f.writeCValueDerefMember(writer, operand, .{ .identifier = "payload" }); |
| 4462 | 4799 | try writer.writeAll(";\n"); |
| ... | ... | @@ -4467,6 +4804,7 @@ fn airOptionalPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4467 | 4804 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4468 | 4805 | const writer = f.object.writer(); |
| 4469 | 4806 | const operand = try f.resolveInst(ty_op.operand); |
| 4807 | try reap(f, inst, &.{ty_op.operand}); |
| 4470 | 4808 | const operand_ty = f.air.typeOf(ty_op.operand); |
| 4471 | 4809 | |
| 4472 | 4810 | const opt_ty = operand_ty.elemType(); |
| ... | ... | @@ -4483,7 +4821,8 @@ fn airOptionalPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4483 | 4821 | try writer.writeAll(";\n"); |
| 4484 | 4822 | |
| 4485 | 4823 | const inst_ty = f.air.typeOfIndex(inst); |
| 4486 | | const local = try f.allocLocal(inst_ty, .Const); |
| 4824 | const local = try f.allocLocal(inst, inst_ty); |
| 4825 | try f.writeCValue(writer, local, .Other); |
| 4487 | 4826 | try writer.writeAll(" = &"); |
| 4488 | 4827 | try f.writeCValueDeref(writer, operand); |
| 4489 | 4828 | |
| ... | ... | @@ -4492,37 +4831,49 @@ fn airOptionalPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4492 | 4831 | } |
| 4493 | 4832 | |
| 4494 | 4833 | fn airStructFieldPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4495 | | if (f.liveness.isUnused(inst)) |
| 4834 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 4835 | const extra = f.air.extraData(Air.StructField, ty_pl.payload).data; |
| 4836 | |
| 4837 | if (f.liveness.isUnused(inst)) { |
| 4838 | try reap(f, inst, &.{extra.struct_operand}); |
| 4496 | 4839 | // TODO this @as is needed because of a stage1 bug |
| 4497 | 4840 | return @as(CValue, CValue.none); |
| 4841 | } |
| 4498 | 4842 | |
| 4499 | | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 4500 | | const extra = f.air.extraData(Air.StructField, ty_pl.payload).data; |
| 4501 | 4843 | const struct_ptr = try f.resolveInst(extra.struct_operand); |
| 4844 | try reap(f, inst, &.{extra.struct_operand}); |
| 4502 | 4845 | const struct_ptr_ty = f.air.typeOf(extra.struct_operand); |
| 4503 | 4846 | return structFieldPtr(f, inst, struct_ptr_ty, struct_ptr, extra.field_index); |
| 4504 | 4847 | } |
| 4505 | 4848 | |
| 4506 | 4849 | fn airStructFieldPtrIndex(f: *Function, inst: Air.Inst.Index, index: u8) !CValue { |
| 4507 | | if (f.liveness.isUnused(inst)) |
| 4850 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4851 | |
| 4852 | if (f.liveness.isUnused(inst)) { |
| 4853 | try reap(f, inst, &.{ty_op.operand}); |
| 4508 | 4854 | // TODO this @as is needed because of a stage1 bug |
| 4509 | 4855 | return @as(CValue, CValue.none); |
| 4856 | } |
| 4510 | 4857 | |
| 4511 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4512 | 4858 | const struct_ptr = try f.resolveInst(ty_op.operand); |
| 4859 | try reap(f, inst, &.{ty_op.operand}); |
| 4513 | 4860 | const struct_ptr_ty = f.air.typeOf(ty_op.operand); |
| 4514 | 4861 | return structFieldPtr(f, inst, struct_ptr_ty, struct_ptr, index); |
| 4515 | 4862 | } |
| 4516 | 4863 | |
| 4517 | 4864 | fn airFieldParentPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4518 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 4519 | | |
| 4520 | 4865 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 4521 | 4866 | const extra = f.air.extraData(Air.FieldParentPtr, ty_pl.payload).data; |
| 4522 | 4867 | |
| 4868 | if (f.liveness.isUnused(inst)) { |
| 4869 | try reap(f, inst, &.{extra.field_ptr}); |
| 4870 | return CValue.none; |
| 4871 | } |
| 4872 | |
| 4523 | 4873 | const struct_ptr_ty = f.air.typeOfIndex(inst); |
| 4524 | 4874 | const field_ptr_ty = f.air.typeOf(extra.field_ptr); |
| 4525 | 4875 | const field_ptr_val = try f.resolveInst(extra.field_ptr); |
| 4876 | try reap(f, inst, &.{extra.field_ptr}); |
| 4526 | 4877 | |
| 4527 | 4878 | const target = f.object.dg.module.getTarget(); |
| 4528 | 4879 | const struct_ty = struct_ptr_ty.childType(); |
| ... | ... | @@ -4539,7 +4890,8 @@ fn airFieldParentPtr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4539 | 4890 | const u8_ptr_ty = Type.initPayload(&u8_ptr_pl.base); |
| 4540 | 4891 | |
| 4541 | 4892 | const writer = f.object.writer(); |
| 4542 | | const local = try f.allocLocal(struct_ptr_ty, .Const); |
| 4893 | const local = try f.allocLocal(inst, struct_ptr_ty); |
| 4894 | try f.writeCValue(writer, local, .Other); |
| 4543 | 4895 | try writer.writeAll(" = ("); |
| 4544 | 4896 | try f.renderTypecast(writer, struct_ptr_ty); |
| 4545 | 4897 | try writer.writeAll(")&(("); |
| ... | ... | @@ -4560,7 +4912,8 @@ fn structFieldPtr(f: *Function, inst: Air.Inst.Index, struct_ptr_ty: Type, struc |
| 4560 | 4912 | // Ensure complete type definition is visible before accessing fields. |
| 4561 | 4913 | try f.renderType(std.io.null_writer, struct_ty); |
| 4562 | 4914 | |
| 4563 | | const local = try f.allocLocal(field_ptr_ty, .Const); |
| 4915 | const local = try f.allocLocal(inst, field_ptr_ty); |
| 4916 | try f.writeCValue(writer, local, .Other); |
| 4564 | 4917 | try writer.writeAll(" = ("); |
| 4565 | 4918 | try f.renderTypecast(writer, field_ptr_ty); |
| 4566 | 4919 | try writer.writeByte(')'); |
| ... | ... | @@ -4648,16 +5001,23 @@ fn structFieldPtr(f: *Function, inst: Air.Inst.Index, struct_ptr_ty: Type, struc |
| 4648 | 5001 | } |
| 4649 | 5002 | |
| 4650 | 5003 | fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4651 | | if (f.liveness.isUnused(inst)) |
| 5004 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 5005 | const extra = f.air.extraData(Air.StructField, ty_pl.payload).data; |
| 5006 | |
| 5007 | if (f.liveness.isUnused(inst)) { |
| 5008 | try reap(f, inst, &.{extra.struct_operand}); |
| 4652 | 5009 | return CValue.none; |
| 5010 | } |
| 4653 | 5011 | |
| 4654 | 5012 | const inst_ty = f.air.typeOfIndex(inst); |
| 4655 | | if (!inst_ty.hasRuntimeBitsIgnoreComptime()) return CValue.none; |
| 5013 | if (!inst_ty.hasRuntimeBitsIgnoreComptime()) { |
| 5014 | try reap(f, inst, &.{extra.struct_operand}); |
| 5015 | return CValue.none; |
| 5016 | } |
| 4656 | 5017 | |
| 4657 | | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 4658 | | const extra = f.air.extraData(Air.StructField, ty_pl.payload).data; |
| 4659 | 5018 | const target = f.object.dg.module.getTarget(); |
| 4660 | 5019 | const struct_byval = try f.resolveInst(extra.struct_operand); |
| 5020 | try reap(f, inst, &.{extra.struct_operand}); |
| 4661 | 5021 | const struct_ty = f.air.typeOf(extra.struct_operand); |
| 4662 | 5022 | const writer = f.object.writer(); |
| 4663 | 5023 | |
| ... | ... | @@ -4701,7 +5061,8 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4701 | 5061 | }; |
| 4702 | 5062 | const field_int_ty = Type.initPayload(&field_int_pl.base); |
| 4703 | 5063 | |
| 4704 | | const temp_local = try f.allocLocal(field_int_ty, .Const); |
| 5064 | const temp_local = try f.allocLocal(inst, field_int_ty); |
| 5065 | try f.writeCValue(writer, temp_local, .Other); |
| 4705 | 5066 | try writer.writeAll(" = zig_wrap_"); |
| 4706 | 5067 | try f.object.dg.renderTypeForBuiltinFnName(writer, field_int_ty); |
| 4707 | 5068 | try writer.writeAll("(("); |
| ... | ... | @@ -4717,8 +5078,7 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4717 | 5078 | try writer.writeAll(");\n"); |
| 4718 | 5079 | if (inst_ty.eql(field_int_ty, f.object.dg.module)) return temp_local; |
| 4719 | 5080 | |
| 4720 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 4721 | | try writer.writeAll(";\n"); |
| 5081 | const local = try f.allocLocal(inst, inst_ty); |
| 4722 | 5082 | try writer.writeAll("memcpy("); |
| 4723 | 5083 | try f.writeCValue(writer, .{ .local_ref = local.local }, .FunctionArgument); |
| 4724 | 5084 | try writer.writeAll(", "); |
| ... | ... | @@ -4726,20 +5086,22 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4726 | 5086 | try writer.writeAll(", sizeof("); |
| 4727 | 5087 | try f.renderTypecast(writer, inst_ty); |
| 4728 | 5088 | try writer.writeAll("));\n"); |
| 5089 | try freeLocal(f, inst, temp_local.local, 0); |
| 4729 | 5090 | return local; |
| 4730 | 5091 | }, |
| 4731 | 5092 | }, |
| 4732 | 5093 | .@"union", .union_safety_tagged, .union_tagged => if (struct_ty.containerLayout() == .Packed) { |
| 4733 | 5094 | const operand_lval = if (struct_byval == .constant) blk: { |
| 4734 | | const operand_local = try f.allocLocal(struct_ty, .Const); |
| 5095 | const operand_local = try f.allocLocal(inst, struct_ty); |
| 5096 | try f.writeCValue(writer, operand_local, .Other); |
| 4735 | 5097 | try writer.writeAll(" = "); |
| 4736 | 5098 | try f.writeCValue(writer, struct_byval, .Initializer); |
| 4737 | 5099 | try writer.writeAll(";\n"); |
| 4738 | 5100 | break :blk operand_local; |
| 4739 | 5101 | } else struct_byval; |
| 4740 | 5102 | |
| 4741 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 4742 | | try writer.writeAll(";\n"); |
| 5103 | const local = try f.allocLocal(inst, inst_ty); |
| 5104 | try f.writeCValue(writer, local, .Other); |
| 4743 | 5105 | try writer.writeAll("memcpy(&"); |
| 4744 | 5106 | try f.writeCValue(writer, local, .FunctionArgument); |
| 4745 | 5107 | try writer.writeAll(", &"); |
| ... | ... | @@ -4747,6 +5109,11 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4747 | 5109 | try writer.writeAll(", sizeof("); |
| 4748 | 5110 | try f.renderTypecast(writer, inst_ty); |
| 4749 | 5111 | try writer.writeAll("));\n"); |
| 5112 | |
| 5113 | if (struct_byval == .constant) { |
| 5114 | try freeLocal(f, inst, operand_lval.local, 0); |
| 5115 | } |
| 5116 | |
| 4750 | 5117 | return local; |
| 4751 | 5118 | } else .{ |
| 4752 | 5119 | .identifier = struct_ty.unionFields().keys()[extra.field_index], |
| ... | ... | @@ -4764,13 +5131,15 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4764 | 5131 | }; |
| 4765 | 5132 | |
| 4766 | 5133 | const is_array = lowersToArray(inst_ty, target); |
| 4767 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 5134 | const local = try f.allocLocal(inst, inst_ty); |
| 4768 | 5135 | if (is_array) { |
| 4769 | | try writer.writeAll(";\n"); |
| 4770 | 5136 | try writer.writeAll("memcpy("); |
| 4771 | 5137 | try f.writeCValue(writer, local, .FunctionArgument); |
| 4772 | 5138 | try writer.writeAll(", "); |
| 4773 | | } else try writer.writeAll(" = "); |
| 5139 | } else { |
| 5140 | try f.writeCValue(writer, local, .Other); |
| 5141 | try writer.writeAll(" = "); |
| 5142 | } |
| 4774 | 5143 | if (extra_name != .none) { |
| 4775 | 5144 | try f.writeCValueMember(writer, struct_byval, extra_name); |
| 4776 | 5145 | try writer.writeByte('.'); |
| ... | ... | @@ -4788,9 +5157,13 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4788 | 5157 | /// *(E!T) -> E |
| 4789 | 5158 | /// Note that the result is never a pointer. |
| 4790 | 5159 | fn airUnwrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4791 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 4792 | | |
| 4793 | 5160 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5161 | |
| 5162 | if (f.liveness.isUnused(inst)) { |
| 5163 | try reap(f, inst, &.{ty_op.operand}); |
| 5164 | return CValue.none; |
| 5165 | } |
| 5166 | |
| 4794 | 5167 | const inst_ty = f.air.typeOfIndex(inst); |
| 4795 | 5168 | const operand = try f.resolveInst(ty_op.operand); |
| 4796 | 5169 | const operand_ty = f.air.typeOf(ty_op.operand); |
| ... | ... | @@ -4800,9 +5173,11 @@ fn airUnwrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4800 | 5173 | const error_ty = error_union_ty.errorUnionSet(); |
| 4801 | 5174 | const payload_ty = error_union_ty.errorUnionPayload(); |
| 4802 | 5175 | if (!payload_ty.hasRuntimeBits()) return operand; |
| 5176 | try reap(f, inst, &.{ty_op.operand}); |
| 4803 | 5177 | |
| 4804 | 5178 | const writer = f.object.writer(); |
| 4805 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5179 | const local = try f.allocLocal(inst, inst_ty); |
| 5180 | try f.writeCValue(writer, local, .Other); |
| 4806 | 5181 | try writer.writeAll(" = "); |
| 4807 | 5182 | if (!error_ty.errorSetIsEmpty()) |
| 4808 | 5183 | if (operand_is_ptr) |
| ... | ... | @@ -4816,12 +5191,16 @@ fn airUnwrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4816 | 5191 | } |
| 4817 | 5192 | |
| 4818 | 5193 | fn airUnwrapErrUnionPay(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValue { |
| 4819 | | if (f.liveness.isUnused(inst)) |
| 5194 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5195 | |
| 5196 | if (f.liveness.isUnused(inst)) { |
| 5197 | try reap(f, inst, &.{ty_op.operand}); |
| 4820 | 5198 | return CValue.none; |
| 5199 | } |
| 4821 | 5200 | |
| 4822 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4823 | 5201 | const inst_ty = f.air.typeOfIndex(inst); |
| 4824 | 5202 | const operand = try f.resolveInst(ty_op.operand); |
| 5203 | try reap(f, inst, &.{ty_op.operand}); |
| 4825 | 5204 | const operand_ty = f.air.typeOf(ty_op.operand); |
| 4826 | 5205 | const operand_is_ptr = operand_ty.zigTypeTag() == .Pointer; |
| 4827 | 5206 | const error_union_ty = if (operand_is_ptr) operand_ty.childType() else operand_ty; |
| ... | ... | @@ -4829,8 +5208,9 @@ fn airUnwrapErrUnionPay(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValu |
| 4829 | 5208 | if (!error_union_ty.errorUnionPayload().hasRuntimeBits()) { |
| 4830 | 5209 | if (!is_ptr) return CValue.none; |
| 4831 | 5210 | |
| 4832 | | const local = try f.allocLocal(inst_ty, .Const); |
| 4833 | 5211 | const w = f.object.writer(); |
| 5212 | const local = try f.allocLocal(inst, inst_ty); |
| 5213 | try f.writeCValue(w, local, .Other); |
| 4834 | 5214 | try w.writeAll(" = ("); |
| 4835 | 5215 | try f.renderTypecast(w, inst_ty); |
| 4836 | 5216 | try w.writeByte(')'); |
| ... | ... | @@ -4840,7 +5220,8 @@ fn airUnwrapErrUnionPay(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValu |
| 4840 | 5220 | } |
| 4841 | 5221 | |
| 4842 | 5222 | const writer = f.object.writer(); |
| 4843 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5223 | const local = try f.allocLocal(inst, inst_ty); |
| 5224 | try f.writeCValue(writer, local, .Other); |
| 4844 | 5225 | try writer.writeAll(" = "); |
| 4845 | 5226 | if (is_ptr) try writer.writeByte('&'); |
| 4846 | 5227 | if (operand_is_ptr) |
| ... | ... | @@ -4852,10 +5233,14 @@ fn airUnwrapErrUnionPay(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValu |
| 4852 | 5233 | } |
| 4853 | 5234 | |
| 4854 | 5235 | fn airWrapOptional(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4855 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5236 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5237 | |
| 5238 | if (f.liveness.isUnused(inst)) { |
| 5239 | try reap(f, inst, &.{ty_op.operand}); |
| 5240 | return CValue.none; |
| 5241 | } |
| 4856 | 5242 | |
| 4857 | 5243 | const inst_ty = f.air.typeOfIndex(inst); |
| 4858 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4859 | 5244 | const payload = try f.resolveInst(ty_op.operand); |
| 4860 | 5245 | if (inst_ty.optionalReprIsPayload()) return payload; |
| 4861 | 5246 | |
| ... | ... | @@ -4863,8 +5248,10 @@ fn airWrapOptional(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4863 | 5248 | const target = f.object.dg.module.getTarget(); |
| 4864 | 5249 | const is_array = lowersToArray(payload_ty, target); |
| 4865 | 5250 | |
| 4866 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 5251 | try reap(f, inst, &.{ty_op.operand}); |
| 4867 | 5252 | const writer = f.object.writer(); |
| 5253 | const local = try f.allocLocal(inst, inst_ty); |
| 5254 | try f.writeCValue(writer, local, .Other); |
| 4868 | 5255 | try writer.writeAll(" = { .payload = "); |
| 4869 | 5256 | try f.writeCValue(writer, if (is_array) CValue{ .undef = payload_ty } else payload, .Initializer); |
| 4870 | 5257 | try writer.writeAll(", .is_null = "); |
| ... | ... | @@ -4883,16 +5270,22 @@ fn airWrapOptional(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4883 | 5270 | } |
| 4884 | 5271 | |
| 4885 | 5272 | fn airWrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4886 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5273 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5274 | if (f.liveness.isUnused(inst)) { |
| 5275 | try reap(f, inst, &.{ty_op.operand}); |
| 5276 | return CValue.none; |
| 5277 | } |
| 4887 | 5278 | |
| 4888 | 5279 | const writer = f.object.writer(); |
| 4889 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4890 | 5280 | const operand = try f.resolveInst(ty_op.operand); |
| 4891 | 5281 | const error_union_ty = f.air.typeOfIndex(inst); |
| 4892 | 5282 | const payload_ty = error_union_ty.errorUnionPayload(); |
| 4893 | 5283 | if (!payload_ty.hasRuntimeBits()) return operand; |
| 4894 | 5284 | |
| 4895 | | const local = try f.allocLocal(error_union_ty, .Const); |
| 5285 | try reap(f, inst, &.{ty_op.operand}); |
| 5286 | |
| 5287 | const local = try f.allocLocal(inst, error_union_ty); |
| 5288 | try f.writeCValue(writer, local, .Other); |
| 4896 | 5289 | try writer.writeAll(" = { .payload = "); |
| 4897 | 5290 | try f.writeCValue(writer, .{ .undef = payload_ty }, .Initializer); |
| 4898 | 5291 | try writer.writeAll(", .error = "); |
| ... | ... | @@ -4919,6 +5312,7 @@ fn airErrUnionPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4919 | 5312 | |
| 4920 | 5313 | return operand; |
| 4921 | 5314 | } |
| 5315 | try reap(f, inst, &.{ty_op.operand}); |
| 4922 | 5316 | try f.writeCValueDeref(writer, operand); |
| 4923 | 5317 | try writer.writeAll(".error = "); |
| 4924 | 5318 | try f.object.dg.renderValue(writer, error_ty, Value.zero, .Other); |
| ... | ... | @@ -4927,7 +5321,8 @@ fn airErrUnionPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4927 | 5321 | // Then return the payload pointer (only if it is used) |
| 4928 | 5322 | if (f.liveness.isUnused(inst)) return CValue.none; |
| 4929 | 5323 | |
| 4930 | | const local = try f.allocLocal(f.air.typeOfIndex(inst), .Const); |
| 5324 | const local = try f.allocLocal(inst, f.air.typeOfIndex(inst)); |
| 5325 | try f.writeCValue(writer, local, .Other); |
| 4931 | 5326 | try writer.writeAll(" = &("); |
| 4932 | 5327 | try f.writeCValueDeref(writer, operand); |
| 4933 | 5328 | try writer.writeAll(").payload;\n"); |
| ... | ... | @@ -4950,19 +5345,24 @@ fn airSaveErrReturnTraceIndex(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4950 | 5345 | } |
| 4951 | 5346 | |
| 4952 | 5347 | fn airWrapErrUnionPay(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4953 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5348 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5349 | if (f.liveness.isUnused(inst)) { |
| 5350 | try reap(f, inst, &.{ty_op.operand}); |
| 5351 | return CValue.none; |
| 5352 | } |
| 4954 | 5353 | |
| 4955 | 5354 | const inst_ty = f.air.typeOfIndex(inst); |
| 4956 | 5355 | const error_ty = inst_ty.errorUnionSet(); |
| 4957 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 4958 | 5356 | const payload_ty = inst_ty.errorUnionPayload(); |
| 4959 | 5357 | const payload = try f.resolveInst(ty_op.operand); |
| 5358 | try reap(f, inst, &.{ty_op.operand}); |
| 4960 | 5359 | |
| 4961 | 5360 | const target = f.object.dg.module.getTarget(); |
| 4962 | 5361 | const is_array = lowersToArray(payload_ty, target); |
| 4963 | 5362 | |
| 4964 | | const local = try f.allocLocal(inst_ty, if (is_array) .Mut else .Const); |
| 4965 | 5363 | const writer = f.object.writer(); |
| 5364 | const local = try f.allocLocal(inst, inst_ty); |
| 5365 | try f.writeCValue(writer, local, .Other); |
| 4966 | 5366 | try writer.writeAll(" = { .payload = "); |
| 4967 | 5367 | try f.writeCValue(writer, if (is_array) CValue{ .undef = payload_ty } else payload, .Initializer); |
| 4968 | 5368 | try writer.writeAll(", .error = "); |
| ... | ... | @@ -4981,18 +5381,23 @@ fn airWrapErrUnionPay(f: *Function, inst: Air.Inst.Index) !CValue { |
| 4981 | 5381 | } |
| 4982 | 5382 | |
| 4983 | 5383 | fn airIsErr(f: *Function, inst: Air.Inst.Index, is_ptr: bool, operator: []const u8) !CValue { |
| 4984 | | if (f.liveness.isUnused(inst)) |
| 5384 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 5385 | |
| 5386 | if (f.liveness.isUnused(inst)) { |
| 5387 | try reap(f, inst, &.{un_op}); |
| 4985 | 5388 | return CValue.none; |
| 5389 | } |
| 4986 | 5390 | |
| 4987 | | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 4988 | 5391 | const writer = f.object.writer(); |
| 4989 | 5392 | const operand = try f.resolveInst(un_op); |
| 5393 | try reap(f, inst, &.{un_op}); |
| 4990 | 5394 | const operand_ty = f.air.typeOf(un_op); |
| 4991 | | const local = try f.allocLocal(Type.initTag(.bool), .Const); |
| 5395 | const local = try f.allocLocal(inst, Type.bool); |
| 4992 | 5396 | const err_union_ty = if (is_ptr) operand_ty.childType() else operand_ty; |
| 4993 | 5397 | const payload_ty = err_union_ty.errorUnionPayload(); |
| 4994 | 5398 | const error_ty = err_union_ty.errorUnionSet(); |
| 4995 | 5399 | |
| 5400 | try f.writeCValue(writer, local, .Other); |
| 4996 | 5401 | try writer.writeAll(" = "); |
| 4997 | 5402 | |
| 4998 | 5403 | if (!error_ty.errorSetIsEmpty()) |
| ... | ... | @@ -5014,14 +5419,19 @@ fn airIsErr(f: *Function, inst: Air.Inst.Index, is_ptr: bool, operator: []const |
| 5014 | 5419 | } |
| 5015 | 5420 | |
| 5016 | 5421 | fn airArrayToSlice(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5017 | | if (f.liveness.isUnused(inst)) |
| 5422 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5423 | |
| 5424 | if (f.liveness.isUnused(inst)) { |
| 5425 | try reap(f, inst, &.{ty_op.operand}); |
| 5018 | 5426 | return CValue.none; |
| 5427 | } |
| 5019 | 5428 | |
| 5429 | const operand = try f.resolveInst(ty_op.operand); |
| 5430 | try reap(f, inst, &.{ty_op.operand}); |
| 5020 | 5431 | const inst_ty = f.air.typeOfIndex(inst); |
| 5021 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5022 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5023 | 5432 | const writer = f.object.writer(); |
| 5024 | | const operand = try f.resolveInst(ty_op.operand); |
| 5433 | const local = try f.allocLocal(inst, inst_ty); |
| 5434 | try f.writeCValue(writer, local, .Other); |
| 5025 | 5435 | const array_len = f.air.typeOf(ty_op.operand).elemType().arrayLen(); |
| 5026 | 5436 | |
| 5027 | 5437 | try writer.writeAll(" = { .ptr = "); |
| ... | ... | @@ -5043,11 +5453,16 @@ fn airArrayToSlice(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5043 | 5453 | } |
| 5044 | 5454 | |
| 5045 | 5455 | fn airFloatCast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5046 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5456 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5457 | |
| 5458 | if (f.liveness.isUnused(inst)) { |
| 5459 | try reap(f, inst, &.{ty_op.operand}); |
| 5460 | return CValue.none; |
| 5461 | } |
| 5047 | 5462 | |
| 5048 | 5463 | const inst_ty = f.air.typeOfIndex(inst); |
| 5049 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5050 | 5464 | const operand = try f.resolveInst(ty_op.operand); |
| 5465 | try reap(f, inst, &.{ty_op.operand}); |
| 5051 | 5466 | const operand_ty = f.air.typeOf(ty_op.operand); |
| 5052 | 5467 | const target = f.object.dg.module.getTarget(); |
| 5053 | 5468 | const operation = if (inst_ty.isRuntimeFloat() and operand_ty.isRuntimeFloat()) |
| ... | ... | @@ -5059,8 +5474,9 @@ fn airFloatCast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5059 | 5474 | else |
| 5060 | 5475 | unreachable; |
| 5061 | 5476 | |
| 5062 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5063 | 5477 | const writer = f.object.writer(); |
| 5478 | const local = try f.allocLocal(inst, inst_ty); |
| 5479 | try f.writeCValue(writer, local, .Other); |
| 5064 | 5480 | |
| 5065 | 5481 | try writer.writeAll(" = "); |
| 5066 | 5482 | if (inst_ty.isInt() and operand_ty.isRuntimeFloat()) { |
| ... | ... | @@ -5085,13 +5501,19 @@ fn airFloatCast(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5085 | 5501 | } |
| 5086 | 5502 | |
| 5087 | 5503 | fn airPtrToInt(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5088 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5504 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 5505 | |
| 5506 | if (f.liveness.isUnused(inst)) { |
| 5507 | try reap(f, inst, &.{un_op}); |
| 5508 | return CValue.none; |
| 5509 | } |
| 5089 | 5510 | |
| 5511 | const operand = try f.resolveInst(un_op); |
| 5512 | try reap(f, inst, &.{un_op}); |
| 5090 | 5513 | const inst_ty = f.air.typeOfIndex(inst); |
| 5091 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5092 | | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 5093 | 5514 | const writer = f.object.writer(); |
| 5094 | | const operand = try f.resolveInst(un_op); |
| 5515 | const local = try f.allocLocal(inst, inst_ty); |
| 5516 | try f.writeCValue(writer, local, .Other); |
| 5095 | 5517 | |
| 5096 | 5518 | try writer.writeAll(" = ("); |
| 5097 | 5519 | try f.renderTypecast(writer, inst_ty); |
| ... | ... | @@ -5107,20 +5529,27 @@ fn airUnBuiltinCall( |
| 5107 | 5529 | operation: []const u8, |
| 5108 | 5530 | info: BuiltinInfo, |
| 5109 | 5531 | ) !CValue { |
| 5110 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5532 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5111 | 5533 | |
| 5534 | if (f.liveness.isUnused(inst)) { |
| 5535 | try reap(f, inst, &.{ty_op.operand}); |
| 5536 | return CValue.none; |
| 5537 | } |
| 5538 | |
| 5539 | const operand = try f.resolveInst(ty_op.operand); |
| 5540 | try reap(f, inst, &.{ty_op.operand}); |
| 5112 | 5541 | const inst_ty = f.air.typeOfIndex(inst); |
| 5113 | | const operand = f.air.instructions.items(.data)[inst].ty_op.operand; |
| 5114 | | const operand_ty = f.air.typeOf(operand); |
| 5542 | const operand_ty = f.air.typeOf(ty_op.operand); |
| 5115 | 5543 | |
| 5116 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5117 | 5544 | const writer = f.object.writer(); |
| 5545 | const local = try f.allocLocal(inst, inst_ty); |
| 5546 | try f.writeCValue(writer, local, .Other); |
| 5118 | 5547 | try writer.writeAll(" = zig_"); |
| 5119 | 5548 | try writer.writeAll(operation); |
| 5120 | 5549 | try writer.writeByte('_'); |
| 5121 | 5550 | try f.object.dg.renderTypeForBuiltinFnName(writer, operand_ty); |
| 5122 | 5551 | try writer.writeByte('('); |
| 5123 | | try f.writeCValue(writer, try f.resolveInst(operand), .FunctionArgument); |
| 5552 | try f.writeCValue(writer, operand, .FunctionArgument); |
| 5124 | 5553 | try f.object.dg.renderBuiltinInfo(writer, operand_ty, info); |
| 5125 | 5554 | try writer.writeAll(");\n"); |
| 5126 | 5555 | return local; |
| ... | ... | @@ -5132,49 +5561,61 @@ fn airBinBuiltinCall( |
| 5132 | 5561 | operation: []const u8, |
| 5133 | 5562 | info: BuiltinInfo, |
| 5134 | 5563 | ) !CValue { |
| 5135 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5564 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 5565 | |
| 5566 | if (f.liveness.isUnused(inst)) { |
| 5567 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 5568 | return CValue.none; |
| 5569 | } |
| 5570 | |
| 5571 | const lhs = try f.resolveInst(bin_op.lhs); |
| 5572 | const rhs = try f.resolveInst(bin_op.rhs); |
| 5573 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 5136 | 5574 | |
| 5137 | 5575 | const inst_ty = f.air.typeOfIndex(inst); |
| 5138 | | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 5139 | 5576 | const operand_ty = f.air.typeOf(bin_op.lhs); |
| 5140 | 5577 | |
| 5141 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5142 | 5578 | const writer = f.object.writer(); |
| 5579 | const local = try f.allocLocal(inst, inst_ty); |
| 5580 | try f.writeCValue(writer, local, .Other); |
| 5143 | 5581 | try writer.writeAll(" = zig_"); |
| 5144 | 5582 | try writer.writeAll(operation); |
| 5145 | 5583 | try writer.writeByte('_'); |
| 5146 | 5584 | try f.object.dg.renderTypeForBuiltinFnName(writer, operand_ty); |
| 5147 | 5585 | try writer.writeByte('('); |
| 5148 | | try f.writeCValue(writer, try f.resolveInst(bin_op.lhs), .FunctionArgument); |
| 5586 | try f.writeCValue(writer, lhs, .FunctionArgument); |
| 5149 | 5587 | try writer.writeAll(", "); |
| 5150 | | try f.writeCValue(writer, try f.resolveInst(bin_op.rhs), .FunctionArgument); |
| 5588 | try f.writeCValue(writer, rhs, .FunctionArgument); |
| 5151 | 5589 | try f.object.dg.renderBuiltinInfo(writer, operand_ty, info); |
| 5152 | 5590 | try writer.writeAll(");\n"); |
| 5153 | 5591 | return local; |
| 5154 | 5592 | } |
| 5155 | 5593 | |
| 5156 | | fn airCmpBuiltinCall( |
| 5594 | fn cmpBuiltinCall( |
| 5157 | 5595 | f: *Function, |
| 5158 | 5596 | inst: Air.Inst.Index, |
| 5159 | 5597 | operator: []const u8, |
| 5160 | 5598 | operation: []const u8, |
| 5161 | 5599 | ) !CValue { |
| 5162 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5163 | | |
| 5164 | 5600 | const inst_ty = f.air.typeOfIndex(inst); |
| 5165 | 5601 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 5166 | 5602 | const operand_ty = f.air.typeOf(bin_op.lhs); |
| 5167 | 5603 | |
| 5168 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5604 | const lhs = try f.resolveInst(bin_op.lhs); |
| 5605 | const rhs = try f.resolveInst(bin_op.rhs); |
| 5606 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 5607 | |
| 5169 | 5608 | const writer = f.object.writer(); |
| 5609 | const local = try f.allocLocal(inst, inst_ty); |
| 5610 | try f.writeCValue(writer, local, .Other); |
| 5170 | 5611 | try writer.writeAll(" = zig_"); |
| 5171 | 5612 | try writer.writeAll(operation); |
| 5172 | 5613 | try writer.writeByte('_'); |
| 5173 | 5614 | try f.object.dg.renderTypeForBuiltinFnName(writer, operand_ty); |
| 5174 | 5615 | try writer.writeByte('('); |
| 5175 | | try f.writeCValue(writer, try f.resolveInst(bin_op.lhs), .FunctionArgument); |
| 5616 | try f.writeCValue(writer, lhs, .FunctionArgument); |
| 5176 | 5617 | try writer.writeAll(", "); |
| 5177 | | try f.writeCValue(writer, try f.resolveInst(bin_op.rhs), .FunctionArgument); |
| 5618 | try f.writeCValue(writer, rhs, .FunctionArgument); |
| 5178 | 5619 | try writer.print(") {s} {};\n", .{ operator, try f.fmtIntLiteral(Type.initTag(.i32), Value.zero) }); |
| 5179 | 5620 | return local; |
| 5180 | 5621 | } |
| ... | ... | @@ -5188,9 +5629,11 @@ fn airCmpxchg(f: *Function, inst: Air.Inst.Index, flavor: [*:0]const u8) !CValue |
| 5188 | 5629 | const ptr = try f.resolveInst(extra.ptr); |
| 5189 | 5630 | const expected_value = try f.resolveInst(extra.expected_value); |
| 5190 | 5631 | const new_value = try f.resolveInst(extra.new_value); |
| 5632 | try reap(f, inst, &.{ extra.ptr, extra.expected_value, extra.new_value }); |
| 5191 | 5633 | const writer = f.object.writer(); |
| 5192 | 5634 | |
| 5193 | | const local = try f.allocLocal(inst_ty, .Mut); |
| 5635 | const local = try f.allocLocal(inst, inst_ty); |
| 5636 | try f.writeCValue(writer, local, .Other); |
| 5194 | 5637 | try writer.writeAll(" = "); |
| 5195 | 5638 | if (is_struct) try writer.writeAll("{ .payload = "); |
| 5196 | 5639 | try f.writeCValue(writer, expected_value, .Initializer); |
| ... | ... | @@ -5246,8 +5689,10 @@ fn airAtomicRmw(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5246 | 5689 | const ptr_ty = f.air.typeOf(pl_op.operand); |
| 5247 | 5690 | const ptr = try f.resolveInst(pl_op.operand); |
| 5248 | 5691 | const operand = try f.resolveInst(extra.operand); |
| 5249 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5692 | try reap(f, inst, &.{ pl_op.operand, extra.operand }); |
| 5250 | 5693 | const writer = f.object.writer(); |
| 5694 | const local = try f.allocLocal(inst, inst_ty); |
| 5695 | try f.writeCValue(writer, local, .Other); |
| 5251 | 5696 | |
| 5252 | 5697 | try writer.print(" = zig_atomicrmw_{s}((", .{toAtomicRmwSuffix(extra.op())}); |
| 5253 | 5698 | switch (extra.op()) { |
| ... | ... | @@ -5276,13 +5721,16 @@ fn airAtomicRmw(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5276 | 5721 | fn airAtomicLoad(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5277 | 5722 | const atomic_load = f.air.instructions.items(.data)[inst].atomic_load; |
| 5278 | 5723 | const ptr = try f.resolveInst(atomic_load.ptr); |
| 5724 | try reap(f, inst, &.{atomic_load.ptr}); |
| 5279 | 5725 | const ptr_ty = f.air.typeOf(atomic_load.ptr); |
| 5280 | | if (!ptr_ty.isVolatilePtr() and f.liveness.isUnused(inst)) |
| 5726 | if (!ptr_ty.isVolatilePtr() and f.liveness.isUnused(inst)) { |
| 5281 | 5727 | return CValue.none; |
| 5728 | } |
| 5282 | 5729 | |
| 5283 | 5730 | const inst_ty = f.air.typeOfIndex(inst); |
| 5284 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5285 | 5731 | const writer = f.object.writer(); |
| 5732 | const local = try f.allocLocal(inst, inst_ty); |
| 5733 | try f.writeCValue(writer, local, .Other); |
| 5286 | 5734 | |
| 5287 | 5735 | try writer.writeAll(" = zig_atomic_load((zig_atomic("); |
| 5288 | 5736 | try f.renderTypecast(writer, ptr_ty.elemType()); |
| ... | ... | @@ -5302,6 +5750,7 @@ fn airAtomicStore(f: *Function, inst: Air.Inst.Index, order: [*:0]const u8) !CVa |
| 5302 | 5750 | const ptr_ty = f.air.typeOf(bin_op.lhs); |
| 5303 | 5751 | const ptr = try f.resolveInst(bin_op.lhs); |
| 5304 | 5752 | const element = try f.resolveInst(bin_op.rhs); |
| 5753 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 5305 | 5754 | const writer = f.object.writer(); |
| 5306 | 5755 | |
| 5307 | 5756 | try writer.writeAll("zig_atomic_store((zig_atomic("); |
| ... | ... | @@ -5324,6 +5773,7 @@ fn airMemset(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5324 | 5773 | const dest_ptr = try f.resolveInst(pl_op.operand); |
| 5325 | 5774 | const value = try f.resolveInst(extra.lhs); |
| 5326 | 5775 | const len = try f.resolveInst(extra.rhs); |
| 5776 | try reap(f, inst, &.{ pl_op.operand, extra.lhs, extra.rhs }); |
| 5327 | 5777 | |
| 5328 | 5778 | const writer = f.object.writer(); |
| 5329 | 5779 | if (dest_ty.isVolatilePtr()) { |
| ... | ... | @@ -5332,7 +5782,8 @@ fn airMemset(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5332 | 5782 | const u8_ptr_ty = Type.initPayload(&u8_ptr_pl.base); |
| 5333 | 5783 | |
| 5334 | 5784 | try writer.writeAll("for ("); |
| 5335 | | const index = try f.allocLocal(Type.usize, .Mut); |
| 5785 | const index = try f.allocLocal(inst, Type.usize); |
| 5786 | try f.writeCValue(writer, index, .Other); |
| 5336 | 5787 | try writer.writeAll(" = "); |
| 5337 | 5788 | try f.object.dg.renderValue(writer, Type.usize, Value.zero, .Initializer); |
| 5338 | 5789 | try writer.writeAll("; "); |
| ... | ... | @@ -5353,6 +5804,8 @@ fn airMemset(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5353 | 5804 | try f.writeCValue(writer, value, .FunctionArgument); |
| 5354 | 5805 | try writer.writeAll(";\n"); |
| 5355 | 5806 | |
| 5807 | try freeLocal(f, inst, index.local, 0); |
| 5808 | |
| 5356 | 5809 | return CValue.none; |
| 5357 | 5810 | } |
| 5358 | 5811 | |
| ... | ... | @@ -5373,6 +5826,7 @@ fn airMemcpy(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5373 | 5826 | const dest_ptr = try f.resolveInst(pl_op.operand); |
| 5374 | 5827 | const src_ptr = try f.resolveInst(extra.lhs); |
| 5375 | 5828 | const len = try f.resolveInst(extra.rhs); |
| 5829 | try reap(f, inst, &.{ pl_op.operand, extra.lhs, extra.rhs }); |
| 5376 | 5830 | const writer = f.object.writer(); |
| 5377 | 5831 | |
| 5378 | 5832 | try writer.writeAll("memcpy("); |
| ... | ... | @@ -5390,6 +5844,7 @@ fn airSetUnionTag(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5390 | 5844 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 5391 | 5845 | const union_ptr = try f.resolveInst(bin_op.lhs); |
| 5392 | 5846 | const new_tag = try f.resolveInst(bin_op.rhs); |
| 5847 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 5393 | 5848 | const writer = f.object.writer(); |
| 5394 | 5849 | |
| 5395 | 5850 | const union_ty = f.air.typeOf(bin_op.lhs).childType(); |
| ... | ... | @@ -5407,20 +5862,27 @@ fn airSetUnionTag(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5407 | 5862 | } |
| 5408 | 5863 | |
| 5409 | 5864 | fn airGetUnionTag(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5410 | | if (f.liveness.isUnused(inst)) |
| 5865 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5866 | |
| 5867 | if (f.liveness.isUnused(inst)) { |
| 5868 | try reap(f, inst, &.{ty_op.operand}); |
| 5411 | 5869 | return CValue.none; |
| 5870 | } |
| 5412 | 5871 | |
| 5413 | | const inst_ty = f.air.typeOfIndex(inst); |
| 5414 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5415 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5416 | | const un_ty = f.air.typeOf(ty_op.operand); |
| 5417 | | const writer = f.object.writer(); |
| 5418 | 5872 | const operand = try f.resolveInst(ty_op.operand); |
| 5873 | try reap(f, inst, &.{ty_op.operand}); |
| 5874 | |
| 5875 | const un_ty = f.air.typeOf(ty_op.operand); |
| 5419 | 5876 | |
| 5420 | 5877 | const target = f.object.dg.module.getTarget(); |
| 5421 | 5878 | const layout = un_ty.unionGetLayout(target); |
| 5422 | 5879 | if (layout.tag_size == 0) return CValue.none; |
| 5423 | 5880 | |
| 5881 | const inst_ty = f.air.typeOfIndex(inst); |
| 5882 | const writer = f.object.writer(); |
| 5883 | const local = try f.allocLocal(inst, inst_ty); |
| 5884 | try f.writeCValue(writer, local, .Other); |
| 5885 | |
| 5424 | 5886 | try writer.writeAll(" = "); |
| 5425 | 5887 | try f.writeCValue(writer, operand, .Other); |
| 5426 | 5888 | try writer.writeAll(".tag;\n"); |
| ... | ... | @@ -5428,15 +5890,21 @@ fn airGetUnionTag(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5428 | 5890 | } |
| 5429 | 5891 | |
| 5430 | 5892 | fn airTagName(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5431 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5432 | | |
| 5433 | 5893 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 5894 | |
| 5895 | if (f.liveness.isUnused(inst)) { |
| 5896 | try reap(f, inst, &.{un_op}); |
| 5897 | return CValue.none; |
| 5898 | } |
| 5899 | |
| 5434 | 5900 | const inst_ty = f.air.typeOfIndex(inst); |
| 5435 | 5901 | const enum_ty = f.air.typeOf(un_op); |
| 5436 | 5902 | const operand = try f.resolveInst(un_op); |
| 5903 | try reap(f, inst, &.{un_op}); |
| 5437 | 5904 | |
| 5438 | 5905 | const writer = f.object.writer(); |
| 5439 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5906 | const local = try f.allocLocal(inst, inst_ty); |
| 5907 | try f.writeCValue(writer, local, .Other); |
| 5440 | 5908 | try writer.print(" = {s}(", .{try f.object.dg.getTagNameFn(enum_ty)}); |
| 5441 | 5909 | try f.writeCValue(writer, operand, .Other); |
| 5442 | 5910 | try writer.writeAll(");\n"); |
| ... | ... | @@ -5445,13 +5913,19 @@ fn airTagName(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5445 | 5913 | } |
| 5446 | 5914 | |
| 5447 | 5915 | fn airErrorName(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5448 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5449 | | |
| 5450 | 5916 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 5917 | |
| 5918 | if (f.liveness.isUnused(inst)) { |
| 5919 | try reap(f, inst, &.{un_op}); |
| 5920 | return CValue.none; |
| 5921 | } |
| 5922 | |
| 5451 | 5923 | const writer = f.object.writer(); |
| 5452 | 5924 | const inst_ty = f.air.typeOfIndex(inst); |
| 5453 | 5925 | const operand = try f.resolveInst(un_op); |
| 5454 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5926 | try reap(f, inst, &.{un_op}); |
| 5927 | const local = try f.allocLocal(inst, inst_ty); |
| 5928 | try f.writeCValue(writer, local, .Other); |
| 5455 | 5929 | |
| 5456 | 5930 | try writer.writeAll(" = zig_errorName["); |
| 5457 | 5931 | try f.writeCValue(writer, operand, .Other); |
| ... | ... | @@ -5460,17 +5934,21 @@ fn airErrorName(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5460 | 5934 | } |
| 5461 | 5935 | |
| 5462 | 5936 | fn airSplat(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5463 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5937 | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5938 | if (f.liveness.isUnused(inst)) { |
| 5939 | try reap(f, inst, &.{ty_op.operand}); |
| 5940 | return CValue.none; |
| 5941 | } |
| 5464 | 5942 | |
| 5465 | 5943 | const inst_ty = f.air.typeOfIndex(inst); |
| 5466 | | const ty_op = f.air.instructions.items(.data)[inst].ty_op; |
| 5467 | 5944 | const operand = try f.resolveInst(ty_op.operand); |
| 5945 | try reap(f, inst, &.{ty_op.operand}); |
| 5468 | 5946 | const writer = f.object.writer(); |
| 5469 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5947 | const local = try f.allocLocal(inst, inst_ty); |
| 5948 | try f.writeCValue(writer, local, .Other); |
| 5470 | 5949 | try writer.writeAll(" = "); |
| 5471 | 5950 | |
| 5472 | 5951 | _ = operand; |
| 5473 | | _ = local; |
| 5474 | 5952 | return f.fail("TODO: C backend: implement airSplat", .{}); |
| 5475 | 5953 | } |
| 5476 | 5954 | |
| ... | ... | @@ -5487,12 +5965,17 @@ fn airShuffle(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5487 | 5965 | } |
| 5488 | 5966 | |
| 5489 | 5967 | fn airReduce(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5490 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5968 | const reduce = f.air.instructions.items(.data)[inst].reduce; |
| 5969 | |
| 5970 | if (f.liveness.isUnused(inst)) { |
| 5971 | try reap(f, inst, &.{reduce.operand}); |
| 5972 | return CValue.none; |
| 5973 | } |
| 5491 | 5974 | |
| 5492 | 5975 | const target = f.object.dg.module.getTarget(); |
| 5493 | 5976 | const scalar_ty = f.air.typeOfIndex(inst); |
| 5494 | | const reduce = f.air.instructions.items(.data)[inst].reduce; |
| 5495 | 5977 | const operand = try f.resolveInst(reduce.operand); |
| 5978 | try reap(f, inst, &.{reduce.operand}); |
| 5496 | 5979 | const operand_ty = f.air.typeOf(reduce.operand); |
| 5497 | 5980 | const vector_len = operand_ty.vectorLen(); |
| 5498 | 5981 | const writer = f.object.writer(); |
| ... | ... | @@ -5569,10 +6052,12 @@ fn airReduce(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5569 | 6052 | // } |
| 5570 | 6053 | // break :reduce accum; |
| 5571 | 6054 | // } |
| 5572 | | const it = try f.allocLocal(Type.usize, .Mut); |
| 6055 | const it = try f.allocLocal(inst, Type.usize); |
| 6056 | try f.writeCValue(writer, it, .Other); |
| 5573 | 6057 | try writer.writeAll(" = 0;\n"); |
| 5574 | 6058 | |
| 5575 | | const accum = try f.allocLocal(scalar_ty, .Mut); |
| 6059 | const accum = try f.allocLocal(inst, scalar_ty); |
| 6060 | try f.writeCValue(writer, accum, .Other); |
| 5576 | 6061 | try writer.writeAll(" = "); |
| 5577 | 6062 | |
| 5578 | 6063 | const init_val = switch (reduce.operation) { |
| ... | ... | @@ -5635,32 +6120,43 @@ fn airReduce(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5635 | 6120 | |
| 5636 | 6121 | try writer.writeAll(";\n"); |
| 5637 | 6122 | |
| 6123 | try freeLocal(f, inst, it.local, 0); |
| 6124 | |
| 5638 | 6125 | return accum; |
| 5639 | 6126 | } |
| 5640 | 6127 | |
| 5641 | 6128 | fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5642 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5643 | | |
| 5644 | | const inst_ty = f.air.typeOfIndex(inst); |
| 5645 | 6129 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 6130 | const inst_ty = f.air.typeOfIndex(inst); |
| 5646 | 6131 | const len = @intCast(usize, inst_ty.arrayLen()); |
| 5647 | 6132 | const elements = @ptrCast([]const Air.Inst.Ref, f.air.extra[ty_pl.payload..][0..len]); |
| 6133 | const gpa = f.object.dg.gpa; |
| 6134 | const resolved_elements = try gpa.alloc(CValue, elements.len); |
| 6135 | defer gpa.free(resolved_elements); |
| 6136 | { |
| 6137 | var bt = iterateBigTomb(f, inst); |
| 6138 | for (elements) |element, i| { |
| 6139 | resolved_elements[i] = try f.resolveInst(element); |
| 6140 | try bt.feed(element); |
| 6141 | } |
| 6142 | } |
| 6143 | |
| 6144 | if (f.liveness.isUnused(inst)) return CValue.none; |
| 6145 | |
| 5648 | 6146 | const target = f.object.dg.module.getTarget(); |
| 5649 | | const mutability: Mutability = for (elements) |element| { |
| 5650 | | if (lowersToArray(f.air.typeOf(element), target)) break .Mut; |
| 5651 | | } else .Const; |
| 5652 | 6147 | |
| 5653 | 6148 | const writer = f.object.writer(); |
| 5654 | | const local = try f.allocLocal(inst_ty, mutability); |
| 6149 | const local = try f.allocLocal(inst, inst_ty); |
| 6150 | try f.writeCValue(writer, local, .Other); |
| 5655 | 6151 | try writer.writeAll(" = "); |
| 5656 | 6152 | switch (inst_ty.zigTypeTag()) { |
| 5657 | 6153 | .Array, .Vector => { |
| 5658 | 6154 | const elem_ty = inst_ty.childType(); |
| 5659 | 6155 | try writer.writeByte('{'); |
| 5660 | 6156 | var empty = true; |
| 5661 | | for (elements) |element| { |
| 6157 | for (resolved_elements) |element| { |
| 5662 | 6158 | if (!empty) try writer.writeAll(", "); |
| 5663 | | try f.writeCValue(writer, try f.resolveInst(element), .Initializer); |
| 6159 | try f.writeCValue(writer, element, .Initializer); |
| 5664 | 6160 | empty = false; |
| 5665 | 6161 | } |
| 5666 | 6162 | if (inst_ty.sentinel()) |sentinel| { |
| ... | ... | @@ -5686,7 +6182,7 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5686 | 6182 | const element_ty = f.air.typeOf(element); |
| 5687 | 6183 | try f.writeCValue(writer, switch (element_ty.zigTypeTag()) { |
| 5688 | 6184 | .Array => CValue{ .undef = element_ty }, |
| 5689 | | else => try f.resolveInst(element), |
| 6185 | else => resolved_elements[index], |
| 5690 | 6186 | }, .Initializer); |
| 5691 | 6187 | empty = false; |
| 5692 | 6188 | } |
| ... | ... | @@ -5709,7 +6205,7 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5709 | 6205 | try writer.writeAll("memcpy("); |
| 5710 | 6206 | try f.writeCValueMember(writer, local, field_name); |
| 5711 | 6207 | try writer.writeAll(", "); |
| 5712 | | try f.writeCValue(writer, try f.resolveInst(element), .FunctionArgument); |
| 6208 | try f.writeCValue(writer, resolved_elements[index], .FunctionArgument); |
| 5713 | 6209 | try writer.writeAll(", sizeof("); |
| 5714 | 6210 | try f.renderTypecast(writer, element_ty); |
| 5715 | 6211 | try writer.writeAll("));\n"); |
| ... | ... | @@ -5742,7 +6238,7 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5742 | 6238 | empty = false; |
| 5743 | 6239 | } |
| 5744 | 6240 | empty = true; |
| 5745 | | for (elements) |element, index| { |
| 6241 | for (resolved_elements) |element, index| { |
| 5746 | 6242 | const field_ty = inst_ty.structFieldType(index); |
| 5747 | 6243 | if (!field_ty.hasRuntimeBitsIgnoreComptime()) continue; |
| 5748 | 6244 | |
| ... | ... | @@ -5760,7 +6256,7 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5760 | 6256 | }); |
| 5761 | 6257 | try writer.writeByte(')'); |
| 5762 | 6258 | } |
| 5763 | | try f.writeCValue(writer, try f.resolveInst(element), .Other); |
| 6259 | try f.writeCValue(writer, element, .Other); |
| 5764 | 6260 | try writer.writeAll(", "); |
| 5765 | 6261 | try f.object.dg.renderValue(writer, bit_offset_ty, bit_offset_val, .FunctionArgument); |
| 5766 | 6262 | try f.object.dg.renderBuiltinInfo(writer, inst_ty, .Bits); |
| ... | ... | @@ -5781,18 +6277,24 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5781 | 6277 | } |
| 5782 | 6278 | |
| 5783 | 6279 | fn airUnionInit(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5784 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5785 | | |
| 5786 | 6280 | const ty_pl = f.air.instructions.items(.data)[inst].ty_pl; |
| 5787 | 6281 | const extra = f.air.extraData(Air.UnionInit, ty_pl.payload).data; |
| 6282 | |
| 6283 | if (f.liveness.isUnused(inst)) { |
| 6284 | try reap(f, inst, &.{extra.init}); |
| 6285 | return CValue.none; |
| 6286 | } |
| 6287 | |
| 5788 | 6288 | const union_ty = f.air.typeOfIndex(inst); |
| 5789 | 6289 | const target = f.object.dg.module.getTarget(); |
| 5790 | 6290 | const union_obj = union_ty.cast(Type.Payload.Union).?.data; |
| 5791 | 6291 | const field_name = union_obj.fields.keys()[extra.field_index]; |
| 5792 | 6292 | const payload = try f.resolveInst(extra.init); |
| 6293 | try reap(f, inst, &.{extra.init}); |
| 5793 | 6294 | |
| 5794 | 6295 | const writer = f.object.writer(); |
| 5795 | | const local = try f.allocLocal(union_ty, .Const); |
| 6296 | const local = try f.allocLocal(inst, union_ty); |
| 6297 | try f.writeCValue(writer, local, .Other); |
| 5796 | 6298 | if (union_obj.layout == .Packed) { |
| 5797 | 6299 | try writer.writeAll(" = "); |
| 5798 | 6300 | try f.writeCValue(writer, payload, .Initializer); |
| ... | ... | @@ -5839,6 +6341,7 @@ fn airPrefetch(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5839 | 6341 | .instruction => return CValue.none, |
| 5840 | 6342 | } |
| 5841 | 6343 | const ptr = try f.resolveInst(prefetch.ptr); |
| 6344 | try reap(f, inst, &.{prefetch.ptr}); |
| 5842 | 6345 | const writer = f.object.writer(); |
| 5843 | 6346 | try writer.writeAll("zig_prefetch("); |
| 5844 | 6347 | try f.writeCValue(writer, ptr, .FunctionArgument); |
| ... | ... | @@ -5855,7 +6358,8 @@ fn airWasmMemorySize(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5855 | 6358 | |
| 5856 | 6359 | const writer = f.object.writer(); |
| 5857 | 6360 | const inst_ty = f.air.typeOfIndex(inst); |
| 5858 | | const local = try f.allocLocal(inst_ty, .Const); |
| 6361 | const local = try f.allocLocal(inst, inst_ty); |
| 6362 | try f.writeCValue(writer, local, .Other); |
| 5859 | 6363 | |
| 5860 | 6364 | try writer.writeAll(" = "); |
| 5861 | 6365 | try writer.print("zig_wasm_memory_size({d});\n", .{pl_op.payload}); |
| ... | ... | @@ -5869,7 +6373,9 @@ fn airWasmMemoryGrow(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5869 | 6373 | const writer = f.object.writer(); |
| 5870 | 6374 | const inst_ty = f.air.typeOfIndex(inst); |
| 5871 | 6375 | const operand = try f.resolveInst(pl_op.operand); |
| 5872 | | const local = try f.allocLocal(inst_ty, .Const); |
| 6376 | try reap(f, inst, &.{pl_op.operand}); |
| 6377 | const local = try f.allocLocal(inst, inst_ty); |
| 6378 | try f.writeCValue(writer, local, .Other); |
| 5873 | 6379 | |
| 5874 | 6380 | try writer.writeAll(" = "); |
| 5875 | 6381 | try writer.print("zig_wasm_memory_grow({d}, ", .{pl_op.payload}); |
| ... | ... | @@ -5879,15 +6385,19 @@ fn airWasmMemoryGrow(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5879 | 6385 | } |
| 5880 | 6386 | |
| 5881 | 6387 | fn airFloatNeg(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5882 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5883 | | |
| 5884 | 6388 | const inst_ty = f.air.typeOfIndex(inst); |
| 5885 | 6389 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 6390 | if (f.liveness.isUnused(inst)) { |
| 6391 | try reap(f, inst, &.{un_op}); |
| 6392 | return CValue.none; |
| 6393 | } |
| 6394 | |
| 5886 | 6395 | const operand = try f.resolveInst(un_op); |
| 5887 | 6396 | const operand_ty = f.air.typeOf(un_op); |
| 5888 | 6397 | |
| 5889 | | const local = try f.allocLocal(inst_ty, .Const); |
| 5890 | 6398 | const writer = f.object.writer(); |
| 6399 | const local = try f.allocLocal(inst, inst_ty); |
| 6400 | try f.writeCValue(writer, local, .Other); |
| 5891 | 6401 | try writer.writeAll(" = zig_neg_"); |
| 5892 | 6402 | try f.object.dg.renderTypeForBuiltinFnName(writer, operand_ty); |
| 5893 | 6403 | try writer.writeByte('('); |
| ... | ... | @@ -5897,12 +6407,17 @@ fn airFloatNeg(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5897 | 6407 | } |
| 5898 | 6408 | |
| 5899 | 6409 | fn airUnFloatOp(f: *Function, inst: Air.Inst.Index, operation: []const u8) !CValue { |
| 5900 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5901 | 6410 | const un_op = f.air.instructions.items(.data)[inst].un_op; |
| 6411 | if (f.liveness.isUnused(inst)) { |
| 6412 | try reap(f, inst, &.{un_op}); |
| 6413 | return CValue.none; |
| 6414 | } |
| 6415 | const operand = try f.resolveInst(un_op); |
| 6416 | try reap(f, inst, &.{un_op}); |
| 5902 | 6417 | const writer = f.object.writer(); |
| 5903 | 6418 | const inst_ty = f.air.typeOfIndex(inst); |
| 5904 | | const operand = try f.resolveInst(un_op); |
| 5905 | | const local = try f.allocLocal(inst_ty, .Const); |
| 6419 | const local = try f.allocLocal(inst, inst_ty); |
| 6420 | try f.writeCValue(writer, local, .Other); |
| 5906 | 6421 | try writer.writeAll(" = zig_libc_name_"); |
| 5907 | 6422 | try f.object.dg.renderTypeForBuiltinFnName(writer, inst_ty); |
| 5908 | 6423 | try writer.writeByte('('); |
| ... | ... | @@ -5914,13 +6429,19 @@ fn airUnFloatOp(f: *Function, inst: Air.Inst.Index, operation: []const u8) !CVal |
| 5914 | 6429 | } |
| 5915 | 6430 | |
| 5916 | 6431 | fn airBinFloatOp(f: *Function, inst: Air.Inst.Index, operation: []const u8) !CValue { |
| 5917 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5918 | 6432 | const bin_op = f.air.instructions.items(.data)[inst].bin_op; |
| 5919 | | const writer = f.object.writer(); |
| 5920 | | const inst_ty = f.air.typeOfIndex(inst); |
| 6433 | if (f.liveness.isUnused(inst)) { |
| 6434 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 6435 | return CValue.none; |
| 6436 | } |
| 5921 | 6437 | const lhs = try f.resolveInst(bin_op.lhs); |
| 5922 | 6438 | const rhs = try f.resolveInst(bin_op.rhs); |
| 5923 | | const local = try f.allocLocal(inst_ty, .Const); |
| 6439 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs }); |
| 6440 | |
| 6441 | const writer = f.object.writer(); |
| 6442 | const inst_ty = f.air.typeOfIndex(inst); |
| 6443 | const local = try f.allocLocal(inst, inst_ty); |
| 6444 | try f.writeCValue(writer, local, .Other); |
| 5924 | 6445 | try writer.writeAll(" = zig_libc_name_"); |
| 5925 | 6446 | try f.object.dg.renderTypeForBuiltinFnName(writer, inst_ty); |
| 5926 | 6447 | try writer.writeByte('('); |
| ... | ... | @@ -5934,15 +6455,20 @@ fn airBinFloatOp(f: *Function, inst: Air.Inst.Index, operation: []const u8) !CVa |
| 5934 | 6455 | } |
| 5935 | 6456 | |
| 5936 | 6457 | fn airMulAdd(f: *Function, inst: Air.Inst.Index) !CValue { |
| 5937 | | if (f.liveness.isUnused(inst)) return CValue.none; |
| 5938 | 6458 | const pl_op = f.air.instructions.items(.data)[inst].pl_op; |
| 5939 | | const extra = f.air.extraData(Air.Bin, pl_op.payload).data; |
| 6459 | const bin_op = f.air.extraData(Air.Bin, pl_op.payload).data; |
| 6460 | if (f.liveness.isUnused(inst)) { |
| 6461 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs, pl_op.operand }); |
| 6462 | return CValue.none; |
| 6463 | } |
| 5940 | 6464 | const inst_ty = f.air.typeOfIndex(inst); |
| 5941 | | const mulend1 = try f.resolveInst(extra.lhs); |
| 5942 | | const mulend2 = try f.resolveInst(extra.rhs); |
| 6465 | const mulend1 = try f.resolveInst(bin_op.lhs); |
| 6466 | const mulend2 = try f.resolveInst(bin_op.rhs); |
| 5943 | 6467 | const addend = try f.resolveInst(pl_op.operand); |
| 6468 | try reap(f, inst, &.{ bin_op.lhs, bin_op.rhs, pl_op.operand }); |
| 5944 | 6469 | const writer = f.object.writer(); |
| 5945 | | const local = try f.allocLocal(inst_ty, .Const); |
| 6470 | const local = try f.allocLocal(inst, inst_ty); |
| 6471 | try f.writeCValue(writer, local, .Other); |
| 5946 | 6472 | try writer.writeAll(" = zig_libc_name_"); |
| 5947 | 6473 | try f.object.dg.renderTypeForBuiltinFnName(writer, inst_ty); |
| 5948 | 6474 | try writer.writeAll("(fma)("); |
| ... | ... | @@ -6321,3 +6847,63 @@ fn loweredArrayInfo(ty: Type, target: std.Target) ?Type.ArrayInfo { |
| 6321 | 6847 | }, |
| 6322 | 6848 | } |
| 6323 | 6849 | } |
| 6850 | |
| 6851 | fn reap(f: *Function, inst: Air.Inst.Index, operands: []const Air.Inst.Ref) !void { |
| 6852 | assert(operands.len <= Liveness.bpi - 1); |
| 6853 | var tomb_bits = f.liveness.getTombBits(inst); |
| 6854 | for (operands) |operand| { |
| 6855 | const dies = @truncate(u1, tomb_bits) != 0; |
| 6856 | tomb_bits >>= 1; |
| 6857 | if (!dies) continue; |
| 6858 | try die(f, inst, operand); |
| 6859 | } |
| 6860 | } |
| 6861 | |
| 6862 | fn die(f: *Function, inst: Air.Inst.Index, ref: Air.Inst.Ref) !void { |
| 6863 | const ref_inst = Air.refToIndex(ref) orelse return; |
| 6864 | if (f.air.instructions.items(.tag)[ref_inst] == .constant) return; |
| 6865 | const c_value = (f.value_map.fetchRemove(ref) orelse return).value; |
| 6866 | const local_index = switch (c_value) { |
| 6867 | .local => |l| l, |
| 6868 | else => return, |
| 6869 | }; |
| 6870 | try freeLocal(f, inst, local_index, ref_inst); |
| 6871 | } |
| 6872 | |
| 6873 | fn freeLocal(f: *Function, inst: Air.Inst.Index, local_index: LocalIndex, ref_inst: Air.Inst.Index) !void { |
| 6874 | const gpa = f.object.dg.gpa; |
| 6875 | const gop = try f.free_locals.getOrPutContext( |
| 6876 | gpa, |
| 6877 | f.locals.items[local_index].ty, |
| 6878 | f.tyHashCtx(), |
| 6879 | ); |
| 6880 | if (!gop.found_existing) gop.value_ptr.* = .{}; |
| 6881 | log.debug("%{d}: freeing t{d} (operand %{d})", .{ inst, local_index, ref_inst }); |
| 6882 | if (std.debug.runtime_safety) { |
| 6883 | // If this trips, it means a local is being inserted into the |
| 6884 | // free_locals map while it already exists in the map, which is not |
| 6885 | // allowed. |
| 6886 | assert(mem.indexOfScalar(LocalIndex, gop.value_ptr.items, local_index) == null); |
| 6887 | } |
| 6888 | try gop.value_ptr.append(gpa, local_index); |
| 6889 | } |
| 6890 | |
| 6891 | const BigTomb = struct { |
| 6892 | f: *Function, |
| 6893 | inst: Air.Inst.Index, |
| 6894 | lbt: Liveness.BigTomb, |
| 6895 | |
| 6896 | fn feed(bt: *BigTomb, op_ref: Air.Inst.Ref) !void { |
| 6897 | const dies = bt.lbt.feed(); |
| 6898 | if (!dies) return; |
| 6899 | try die(bt.f, bt.inst, op_ref); |
| 6900 | } |
| 6901 | }; |
| 6902 | |
| 6903 | fn iterateBigTomb(f: *Function, inst: Air.Inst.Index) BigTomb { |
| 6904 | return .{ |
| 6905 | .f = f, |
| 6906 | .inst = inst, |
| 6907 | .lbt = f.liveness.iterateBigTomb(inst), |
| 6908 | }; |
| 6909 | } |
Andrew Kelley <andrew@ziglang.org> 2022-12-02 23:07:03-07:00