[llvm] [IR] Allow fast math flags on calls with homogeneous FP struct types (PR #110506)

[Nikita Popov via llvm-commits]

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@@ -351,8 +352,17 @@ class FPMathOperator : public Operator {
     case Instruction::Select:
     case Instruction::Call: {
       Type *Ty = V->getType();
-      while (ArrayType *ArrTy = dyn_cast<ArrayType>(Ty))
-        Ty = ArrTy->getElementType();
+      TypeSwitch<Type *>(Ty)
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nikic wrote:

Please use explicit checks here. We don't really use TypeSwitch in LLVM, and I don't want it pulled into a core header.

https://github.com/llvm/llvm-project/pull/110506