[llvm] [VPlan] Introduces explicit broadcast for live-in constants. (PR #133213)
David Sherwood via llvm-commits
llvm-commits at lists.llvm.org
Mon Jun 23 09:01:14 PDT 2025
================
@@ -1533,6 +1544,14 @@ class VPWidenCallRecipe : public VPRecipeWithIRFlags, public VPIRMetadata {
void print(raw_ostream &O, const Twine &Indent,
VPSlotTracker &SlotTracker) const override;
#endif
+
+ /// Returns true if the recipe only uses the first lane of operand \p Op.
+ bool onlyFirstLaneUsed(const VPValue *Op) const override {
+ assert(is_contained(operands(), Op) &&
+ "Op must be an operand of the recipe");
+ // Scalar called fuction cannot be vectorized.
+ return Op == getOperand(getNumOperands() - 1);
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david-arm wrote:
If I understand correctly, the last operand is the called scalar function, right?
https://github.com/llvm/llvm-project/pull/133213
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