[llvm] [LoopVectorizer] Add support for partial reductions (PR #92418)

[Sam Tebbs via llvm-commits]

================
@@ -233,6 +233,11 @@ Type *VPTypeAnalysis::inferScalarTypeForRecipe(const VPReplicateRecipe *R) {
   llvm_unreachable("Unhandled opcode");
 }
 
+Type *
+VPTypeAnalysis::inferScalarTypeForRecipe(const VPPartialReductionRecipe *R) {
+  return R->getUnderlyingInstr()->getType();
----------------
SamTebbs33 wrote:

I suppose it can with something like `R->getOperand(0)->getUnderlyingValue()->getType()` but I don't know if that's better. Is there a different way?

https://github.com/llvm/llvm-project/pull/92418