[llvm] 4cf7796 - [VPlan] Mark DerivedIV unconditionally single-scalar (NFC) (#189706)

[via llvm-commits]

Author: Ramkumar Ramachandra
Date: 2026-04-19T07:57:27+01:00
New Revision: 4cf7796dfb540215f06ba9ad5fe92534f8ab034b

URL: https://github.com/llvm/llvm-project/commit/4cf7796dfb540215f06ba9ad5fe92534f8ab034b
DIFF: https://github.com/llvm/llvm-project/commit/4cf7796dfb540215f06ba9ad5fe92534f8ab034b.diff

LOG: [VPlan] Mark DerivedIV unconditionally single-scalar (NFC) (#189706)

The result must be single-scalar, independently of operands. The patch
is an NFC because all operands happen to be single-scalar currently.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/VPlanUtils.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/VPlanUtils.cpp b/llvm/lib/Transforms/Vectorize/VPlanUtils.cpp
index 9f73ba77039c2..17d2b9c839950 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanUtils.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanUtils.cpp
@@ -372,7 +372,7 @@ bool vputils::isSingleScalar(const VPValue *VPV) {
     return Rep->isSingleScalar() || (preservesUniformity(Rep->getOpcode()) &&
                                      all_of(Rep->operands(), isSingleScalar));
   }
-  if (isa<VPWidenGEPRecipe, VPDerivedIVRecipe, VPBlendRecipe>(VPV))
+  if (isa<VPWidenGEPRecipe, VPBlendRecipe>(VPV))
     return all_of(VPV->getDefiningRecipe()->operands(), isSingleScalar);
   if (auto *WidenR = dyn_cast<VPWidenRecipe>(VPV)) {
     return preservesUniformity(WidenR->getOpcode()) &&
@@ -385,7 +385,7 @@ bool vputils::isSingleScalar(const VPValue *VPV) {
   if (auto *RR = dyn_cast<VPReductionRecipe>(VPV))
     return !RR->isPartialReduction();
   if (isa<VPCanonicalIVPHIRecipe, VPVectorPointerRecipe,
-          VPVectorEndPointerRecipe>(VPV))
+          VPVectorEndPointerRecipe, VPDerivedIVRecipe>(VPV))
     return true;
   if (auto *Expr = dyn_cast<VPExpressionRecipe>(VPV))
     return Expr->isSingleScalar();