[llvm] 6383afb - [VPlan] Use vputils helper in Blend::usesFirstLaneOnly (NFC) (#189697)

[via llvm-commits]

Author: Ramkumar Ramachandra
Date: 2026-04-17T10:31:40Z
New Revision: 6383afba60e16a9b5b9c62e68fe214f870dd3183

URL: https://github.com/llvm/llvm-project/commit/6383afba60e16a9b5b9c62e68fe214f870dd3183
DIFF: https://github.com/llvm/llvm-project/commit/6383afba60e16a9b5b9c62e68fe214f870dd3183.diff

LOG: [VPlan] Use vputils helper in Blend::usesFirstLaneOnly (NFC) (#189697)

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/VPlan.h
    llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/VPlan.h b/llvm/lib/Transforms/Vectorize/VPlan.h
index c53952941033c..343d39d2e5566 100644
--- a/llvm/lib/Transforms/Vectorize/VPlan.h
+++ b/llvm/lib/Transforms/Vectorize/VPlan.h
@@ -2846,14 +2846,7 @@ class LLVM_ABI_FOR_TEST VPBlendRecipe : public VPRecipeWithIRFlags {
                               VPCostContext &Ctx) const override;
 
   /// Returns true if the recipe only uses the first lane of operand \p Op.
-  bool usesFirstLaneOnly(const VPValue *Op) const override {
-    assert(is_contained(operands(), Op) &&
-           "Op must be an operand of the recipe");
-    // Recursing through Blend recipes only, must terminate at header phi's the
-    // latest.
-    return all_of(users(),
-                  [this](VPUser *U) { return U->usesFirstLaneOnly(this); });
-  }
+  bool usesFirstLaneOnly(const VPValue *Op) const override;
 
 protected:
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)

diff  --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index a2445b3dac77d..763b2cbc99461 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -4668,6 +4668,11 @@ void VPReductionPHIRecipe::printRecipe(raw_ostream &O, const Twine &Indent,
 }
 #endif
 
+bool VPBlendRecipe::usesFirstLaneOnly(const VPValue *Op) const {
+  assert(is_contained(operands(), Op) && "Op must be an operand of the recipe");
+  return vputils::onlyFirstLaneUsed(this);
+}
+
 void VPWidenPHIRecipe::execute(VPTransformState &State) {
   Value *Op0 = State.get(getOperand(0));
   Type *VecTy = Op0->getType();