[llvm] [LV] Bundle partial reductions inside VPExpressionRecipe (PR #147302)

[Sam Tebbs via llvm-commits]

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@@ -1001,13 +1001,24 @@ InstructionCost TargetTransformInfo::getShuffleCost(
 
 TargetTransformInfo::PartialReductionExtendKind
 TargetTransformInfo::getPartialReductionExtendKind(Instruction *I) {
-  if (isa<SExtInst>(I))
-    return PR_SignExtend;
-  if (isa<ZExtInst>(I))
-    return PR_ZeroExtend;
+  if (auto *Cast = dyn_cast<CastInst>(I))
+    return getPartialReductionExtendKind(Cast->getOpcode());
   return PR_None;
 }
 
+TargetTransformInfo::PartialReductionExtendKind
+TargetTransformInfo::getPartialReductionExtendKind(
+    Instruction::CastOps CastOpc) {
+  switch (CastOpc) {
+  case Instruction::CastOps::ZExt:
+    return PR_ZeroExtend;
+  case Instruction::CastOps::SExt:
+    return PR_SignExtend;
+  default:
+    return PR_None;
+  }
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SamTebbs33 wrote:

Done, thanks.

https://github.com/llvm/llvm-project/pull/147302