================
@@ -840,6 +897,76 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned
BuiltinID,
Ops[0]);
return Builder.CreateExtractValue(Call, 0);
}
+ case X86::BI__builtin_ia32_roundps:
+ case X86::BI__builtin_ia32_roundpd:
+ case X86::BI__builtin_ia32_roundps256:
+ case X86::BI__builtin_ia32_roundpd256: {
+ unsigned M = cast<ConstantInt>(Ops[1])->getZExtValue();
+ unsigned MXCSRMask = 0b100;
+ unsigned FRoundNoExcMask = 0b1000;
+ unsigned UseMXCSR = MXCSRMask & M;
+ unsigned FRoundNoExc = FRoundNoExcMask & M;
+
+ if (UseMXCSR || FRoundNoExc) {
----------------
RKSimon wrote:
We need this to fire if exceptions haven't been masked:
```suggestion
if (UseMXCSR || !FRoundNoExc) {
```
https://github.com/llvm/llvm-project/pull/171227
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