[PATCH] D116656: [LV] Use onlyFirstLaneDemanded when widening pointer phis (NFCI).
Florian Hahn via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 31 03:06:44 PST 2022
fhahn updated this revision to Diff 404467.
fhahn added a comment.
Rebase on top of recent changes
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D116656/new/
https://reviews.llvm.org/D116656
Files:
llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
Index: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -4502,7 +4502,7 @@
// Determine the number of scalars we need to generate for each unroll
// iteration. If the instruction is uniform, we only need to generate the
// first lane. Otherwise, we generate all VF values.
- bool IsUniform = Cost->isUniformAfterVectorization(P, State.VF);
+ bool IsUniform = vputils::onlyFirstLaneUsed(PhiR);
assert((IsUniform || !State.VF.isScalable()) &&
"Cannot scalarize a scalable VF");
unsigned Lanes = IsUniform ? 1 : State.VF.getFixedValue();
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D116656.404467.patch
Type: text/x-patch
Size: 768 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220131/2e0fdd88/attachment.bin>
More information about the llvm-commits
mailing list