[llvm-branch-commits] [llvm] [LoopVectorizer] Bundle partial reductions with different extensions (PR #136997)

[Sander de Smalen via llvm-branch-commits]

================
@@ -2438,14 +2438,14 @@ 
VPMulAccumulateReductionRecipe::computeCost(ElementCount VF,
     return Ctx.TTI.getPartialReductionCost(
         Instruction::Add, Ctx.Types.inferScalarType(getVecOp0()),
         Ctx.Types.inferScalarType(getVecOp1()), getResultType(), VF,
-        TTI::getPartialReductionExtendKind(getExtOpcode()),
-        TTI::getPartialReductionExtendKind(getExtOpcode()), Instruction::Mul);
+        TTI::getPartialReductionExtendKind(getExt0Opcode()),
+        TTI::getPartialReductionExtendKind(getExt1Opcode()), Instruction::Mul);
   }
 
   Type *RedTy = Ctx.Types.inferScalarType(this);
   auto *SrcVecTy =
       cast<VectorType>(toVectorTy(Ctx.Types.inferScalarType(getVecOp0()), VF));
-  return Ctx.TTI.getMulAccReductionCost(isZExt(), RedTy, SrcVecTy,
+  return Ctx.TTI.getMulAccReductionCost(isZExt0(), RedTy, SrcVecTy,
----------------
sdesmalen-arm wrote:

The TTI hook also needs updating to reflect the separate extends.

https://github.com/llvm/llvm-project/pull/136997
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