zig

commit 2e1b1728505c20ee38d2bd757148e572e4d95f74 (tree)
parent 874b6e39db08f66bb0f702d2177b91535b2a8a02
Author: David Rubin <david@vortan.dev>
Date:   Thu, 27 Nov 2025 17:43:15 -0800

codegen: fix x86-64 backend crc32 inline asm

Diffstat:
M
lib/std/hash/crc.zig
 | 
2
+-
M
src/codegen/x86_64/CodeGen.zig
 | 
4
++++
M
tools/update_crc_catalog.zig
 | 
2
+-

3 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/lib/std/hash/crc.zig b/lib/std/hash/crc.zig
@@ -14,7 +14,7 @@ test {
     _ = @import("crc/test.zig");
 }
 
-pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 }) and builtin.zig_backend == .stage2_llvm) {
+pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 })) {
     true => @import("crc/Crc32c.zig"),
     else => Crc(u32, .{
         .polynomial = 0x1edc6f41,
diff --git a/src/codegen/x86_64/CodeGen.zig b/src/codegen/x86_64/CodeGen.zig
@@ -178018,6 +178018,10 @@ fn airAsm(self: *CodeGen, inst: Air.Inst.Index) !void {
         fixed_mnem_size: {
             const fixed_mnem_size: Memory.Size = switch (mnem_tag) {
                 .clflush => .byte,
+                .crc32 => {
+                    mnem_size.op_has_size.unset(1);
+                    break :fixed_mnem_size;
+                },
                 .fldcw, .fnstcw, .fstcw, .fnstsw, .fstsw => .word,
                 .fldenv, .fnstenv, .fstenv => .none,
                 .frstor, .fsave, .fnsave, .fxrstor, .fxrstor64, .fxsave, .fxsave64 => .none,
diff --git a/tools/update_crc_catalog.zig b/tools/update_crc_catalog.zig
@@ -53,7 +53,7 @@ fn @"i like cheese"(arena: std.mem.Allocator, io: Io, args: []const []const u8) 
         \\    _ = @import("crc/test.zig");
         \\}
         \\
-        \\pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 }) and builtin.zig_backend == .stage2_llvm) {
+        \\pub const Crc32Iscsi = switch (builtin.cpu.hasAll(.x86, &.{ .@"64bit", .crc32 })) {
         \\    true => @import("crc/Crc32c.zig"),
         \\    else => Crc(u32, .{
         \\        .polynomial = 0x1edc6f41,