diff options
Diffstat (limited to 'src/arch/wasm/CodeGen.zig')
| -rw-r--r-- | src/arch/wasm/CodeGen.zig | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/arch/wasm/CodeGen.zig b/src/arch/wasm/CodeGen.zig index a0de387dfd..dbd650ab01 100644 --- a/src/arch/wasm/CodeGen.zig +++ b/src/arch/wasm/CodeGen.zig @@ -6272,11 +6272,21 @@ fn airClz(cg: *CodeGen, inst: Air.Inst.Index) InnerError!void { switch (wasm_bits) { 32 => { - try cg.emitWValue(operand); + if (int_info.signedness == .signed) { + const mask = ~@as(u32, 0) >> @intCast(32 - int_info.bits); + _ = try cg.binOp(operand, .{ .imm32 = mask }, ty, .@"and"); + } else { + try cg.emitWValue(operand); + } try cg.addTag(.i32_clz); }, 64 => { - try cg.emitWValue(operand); + if (int_info.signedness == .signed) { + const mask = ~@as(u64, 0) >> @intCast(64 - int_info.bits); + _ = try cg.binOp(operand, .{ .imm64 = mask }, ty, .@"and"); + } else { + try cg.emitWValue(operand); + } try cg.addTag(.i64_clz); try cg.addTag(.i32_wrap_i64); }, |