Commit 2e1b1728505c20ee38d2bd757148e572e4d95f74 | zig | Meg's Mirrors

author	David Rubin <david@vortan.dev> 2025-11-27 17:43:15-08:00
committer	David Rubin <sinon@vortan.dev> 2026-06-24 02:12:43-05:00
log	2e1b1728505c20ee38d2bd757148e572e4d95f74
tree	45f606e9ff24ca96c5be43d282ea1f6ca95f30aa
parent	874b6e39db08f66bb0f702d2177b91535b2a8a02

codegen: fix x86-64 backend crc32 inline asm

3 files changed, 6 insertions(+), 2 deletions(-)

lib
- std
  - hash
    crc.zig
src
- codegen
  - x86_64
    CodeGen.zig
tools
- update_crc_catalog.zig

lib/std/hash/crc.zig+1-1

...	...	@@ -14,7 +14,7 @@ test {
14	14	_ = @import("crc/test.zig");
15	15	}
16	16
17		pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 }) and builtin.zig_backend == .stage2_llvm) {
	17	pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 })) {
18	18	true => @import("crc/Crc32c.zig"),
19	19	else => Crc(u32, .{
20	20	.polynomial = 0x1edc6f41,

src/codegen/x86_64/CodeGen.zig+4

...	...	@@ -178018,6 +178018,10 @@ fn airAsm(self: *CodeGen, inst: Air.Inst.Index) !void {
178018	178018	fixed_mnem_size: {
178019	178019	const fixed_mnem_size: Memory.Size = switch (mnem_tag) {
178020	178020	.clflush => .byte,
	178021	.crc32 => {
	178022	mnem_size.op_has_size.unset(1);
	178023	break :fixed_mnem_size;
	178024	},
178021	178025	.fldcw, .fnstcw, .fstcw, .fnstsw, .fstsw => .word,
178022	178026	.fldenv, .fnstenv, .fstenv => .none,
178023	178027	.frstor, .fsave, .fnsave, .fxrstor, .fxrstor64, .fxsave, .fxsave64 => .none,

tools/update_crc_catalog.zig+1-1

...	...	@@ -53,7 +53,7 @@ fn @"i like cheese"(arena: std.mem.Allocator, io: Io, args: []const []const u8)
53	53	\\ _ = @import("crc/test.zig");
54	54	\\}
55	55	\\
56		\\pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 }) and builtin.zig_backend == .stage2_llvm) {
	56	\\pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 })) {
57	57	\\ true => @import("crc/Crc32c.zig"),
58	58	\\ else => Crc(u32, .{
59	59	\\ .polynomial = 0x1edc6f41,