[PATCH] D120827: [VPlan] Helper to check if a recipe only uses scalar values of op.

[Florian Hahn via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
fhahn marked an inline comment as done.
Closed by commit rGecea477df3c9: [VPlan] Helper to check if a recipe uses scalar values of op. (authored by fhahn).

Changed prior to commit:
  https://reviews.llvm.org/D120827?vs=414190&id=414638#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120827/new/

https://reviews.llvm.org/D120827

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
@@ -772,6 +772,14 @@
            "Op must be an operand of the recipe");
     return false;
   }
+
+  /// Returns true if the recipe uses scalars of operand \p Op. Conservatively
+  /// returns if only first (scalar) lane is used, as default.
+  virtual bool usesScalars(const VPValue *Op) const {
+    assert(is_contained(operands(), Op) &&
+           "Op must be an operand of the recipe");
+    return onlyFirstLaneUsed(Op);
+  }
 };
 
 inline bool VPUser::classof(const VPDef *Def) {
@@ -1558,6 +1566,13 @@
            "Op must be an operand of the recipe");
     return isUniform();
   }
+
+  /// Returns true if the recipe uses scalars of operand \p Op.
+  bool usesScalars(const VPValue *Op) const override {
+    assert(is_contained(operands(), Op) &&
+           "Op must be an operand of the recipe");
+    return true;
+  }
 };
 
 /// A recipe for generating conditional branches on the bits of a mask.
@@ -1626,6 +1641,13 @@
   void print(raw_ostream &O, const Twine &Indent,
              VPSlotTracker &SlotTracker) const override;
 #endif
+
+  /// Returns true if the recipe uses scalars of operand \p Op.
+  bool usesScalars(const VPValue *Op) const override {
+    assert(is_contained(operands(), Op) &&
+           "Op must be an operand of the recipe");
+    return true;
+  }
 };
 
 /// A Recipe for widening load/store operations.


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