[clang] [llvm] [X86] EmitX86BuiltinExpr - attempt to convert SSE41/AVX1 roundps/d/ss/sd builtins to regular rounding modes (PR #171227)

[Timm Baeder via llvm-commits]

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@@ -75,6 +75,80 @@ static Value *getMaskVecValue(CodeGenFunction &CGF, Value *Mask,
   return MaskVec;
 }
 
+static Value *emitX86Round(CodeGenFunction &CGF, Value *X, unsigned M) {
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tbaederr wrote:

What does `M` mean?

https://github.com/llvm/llvm-project/pull/171227