[llvm] relaxed simd fma (PR #147487)

[Matt Arsenault via llvm-commits]

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@@ -475,6 +475,7 @@ struct SDNodeFlags {
   bool hasAllowReassociation() const { return Flags & AllowReassociation; }
   bool hasNoFPExcept() const { return Flags & NoFPExcept; }
   bool hasUnpredictable() const { return Flags & Unpredictable; }
+  bool hasFastMath() const { return Flags & FastMathFlags; }
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arsenm wrote:

Should not add this. This does not depend on all the flags, and you should only depend on the exact set of flags required for a transform 

https://github.com/llvm/llvm-project/pull/147487