[PATCH] D120827: [VPlan] Helper to check if a recipe only uses scalar values of op.
Florian Hahn via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Mar 2 09:00:30 PST 2022
fhahn created this revision.
fhahn added reviewers: Ayal, gilr, rengolin.
Herald added subscribers: tschuett, psnobl, rogfer01, bollu, hiraditya.
Herald added a project: All.
fhahn requested review of this revision.
Herald added a subscriber: vkmr.
Herald added a project: LLVM.
This patch adds a helper to check if a recipe only uses scalars of a
given operand. This is similar to onlyFirstLaneUsed, which was
introduced earlier.
By default, onlyScalarsUsed falls back on onlyFirstLaneUsed.
Will be used by a follow-up patch.
Repository:
rG LLVM Github Monorepo
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 +772,13 @@
"Op must be an operand of the recipe");
return false;
}
+
+ /// Returns true if the recipe only uses scalars of operand \p Op.
+ virtual bool onlyScalarsUsed(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 +1565,13 @@
"Op must be an operand of the recipe");
return isUniform();
}
+
+ /// Returns true if the recipe only uses scalars of operand \p Op.
+ bool onlyScalarsUsed(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.
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