[llvm] [SPARC] Use FMA instructions when we have UA2007 (PR #148434)

[via llvm-commits]

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@@ -3570,6 +3572,15 @@ bool SparcTargetLowering::isCheapToSpeculateCttz(Type *Ty) const {
   return isCheapToSpeculateCtlz(Ty);
 }
 
+bool SparcTargetLowering::isFMAFasterThanFMulAndFAdd(const MachineFunction &MF,
+                                                     EVT VT) const {
+  return !Subtarget->useSoftFloat();
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koachan wrote:

No, in case of hardfloat non-UA2007 target then FMA isn't legal.
Should I only set this to true when FMA is legal?

https://github.com/llvm/llvm-project/pull/148434