[llvm] [IR] Store fast-math flags in subclasses of Instruction (PR #191190)

[Alexis Engelke via llvm-commits]

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@@ -2717,7 +2719,11 @@ BinaryOperator *BinaryOperator::Create(BinaryOps Op, Value *S1, Value *S2,
                                        InsertPosition InsertBefore) {
   assert(S1->getType() == S2->getType() &&
          "Cannot create binary operator with two operands of differing type!");
-  return new BinaryOperator(Op, S1, S2, S1->getType(), Name, InsertBefore);
+  return FPMathOperator::isSupportedFloatingPointType(S1->getType())
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aengelke wrote:

switch on opcode instead? I don't think isSupportedFloatingPointType is cheaper than that.

https://github.com/llvm/llvm-project/pull/191190