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[CIR][CIRGen][builtin] handle _mm_pause #1493

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Merged
merged 1 commit into from
Mar 18, 2025
Merged

[CIR][CIRGen][builtin] handle _mm_pause #1493

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9 changes: 9 additions & 0 deletions clang/lib/CIR/CodeGen/CIRGenBuiltinX86.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -113,5 +113,14 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned BuiltinID,
voidTy)
.getResult();
}

case X86::BI_mm_pause: {
mlir::Type voidTy = cir::VoidType::get(&getMLIRContext());
return builder
.create<cir::LLVMIntrinsicCallOp>(
getLoc(E->getExprLoc()), builder.getStringAttr("x86.sse2.pause"),
voidTy)
.getResult();
}
}
}
8 changes: 8 additions & 0 deletions clang/test/CIR/CodeGen/X86/builtins-x86.c
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Expand Up @@ -21,3 +21,11 @@ void test_mm_lfence() {
// CIR: {{%.*}} = cir.llvm.intrinsic "x86.sse2.lfence" : () -> !void
// LLVM: call void @llvm.x86.sse2.lfence()
}

void test_mm_pause() {
// CIR-LABEL: test_mm_pause
// LLVM-LABEL: test_mm_pause
_mm_pause();
// CIR: {{%.*}} = cir.llvm.intrinsic "x86.sse2.pause" : () -> !void
// LLVM: call void @llvm.x86.sse2.pause()
}
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