[llvm] [AArch64][CodeGen] Fix crash when fptrunc returns fp16 with +nofp attr (PR #81724)

[David Green via llvm-commits]

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@@ -25008,6 +25008,16 @@ void AArch64TargetLowering::ReplaceNodeResults(
       Results.push_back(
           LowerToPredicatedOp(SDValue(N, 0), DAG, AArch64ISD::MULHU_PRED));
     return;
+  case ISD::FP_ROUND: {
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davemgreen wrote:

This looks like it is doing something that should be handled by the generic legalizer.

Would it be better to not mark the FP_RUND as custom instead?

https://github.com/llvm/llvm-project/pull/81724