[PATCH] D121612: [VPlan] VPInterleaveRecipe only requires the first lane of the address.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
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VPInterleaveRecipe only uses the first lane of the address. Add
onlyFirstLaneUsed implementation. This is needed for a follow-up patch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121612

Files:
  llvm/lib/Transforms/Vectorize/VPlan.h


Index: llvm/lib/Transforms/Vectorize/VPlan.h
===================================================================
--- llvm/lib/Transforms/Vectorize/VPlan.h
+++ llvm/lib/Transforms/Vectorize/VPlan.h
@@ -1461,6 +1461,13 @@
   unsigned getNumStoreOperands() const {
     return getNumOperands() - (HasMask ? 2 : 1);
   }
+
+  /// The recipe only uses the first lane of the address.
+  bool onlyFirstLaneUsed(const VPValue *Op) const override {
+    assert(is_contained(operands(), Op) &&
+           "Op must be an operand of the recipe");
+    return Op == getAddr();
+  }
 };
 
 /// A recipe to represent inloop reduction operations, performing a reduction on


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