[llvm] [DAG] SelectionDAG::canCreateUndefOrPoison - add ISD::FMA/FMAD + tests (PR #152187)

[Simon Pilgrim via llvm-commits]

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@@ -5622,6 +5622,8 @@ bool SelectionDAG::canCreateUndefOrPoison(SDValue Op, const APInt &DemandedElts,
   case ISD::FDIV:
   case ISD::FREM:
   case ISD::FCOPYSIGN:
+  case ISD::FMA:
+  case ISD::FMAD:   
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RKSimon wrote:

Please can you fix the clang-format warning (trailing whitespace?)

https://github.com/llvm/llvm-project/pull/152187