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| author | David Sherwood <david.sherwood@arm.com> | 2021-09-07 11:20:41 +0100 |
|---|---|---|
| committer | David Sherwood <david.sherwood@arm.com> | 2021-11-08 09:41:13 +0000 |
| commit | c42bb30b9e2950efd1d1bd2df9ab8e5b098e65c7 (patch) | |
| tree | 9793a5124ee4c873a25559978dc01e8127d60adf /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | 9b5e2b5261f6cb1e7913e452e5374e6f6ce68e44 (diff) | |
| download | llvm-c42bb30b9e2950efd1d1bd2df9ab8e5b098e65c7.zip llvm-c42bb30b9e2950efd1d1bd2df9ab8e5b098e65c7.tar.gz llvm-c42bb30b9e2950efd1d1bd2df9ab8e5b098e65c7.tar.bz2 | |
[LoopVectorize] Permit fixed-width epilogue loops for scalable vector bodies
At the moment in LoopVectorizationCostModel::selectEpilogueVectorizationFactor
we bail out if the main vector loop uses a scalable VF. This patch adds
support for generating epilogue vector loops using a fixed-width VF when the
main vector loop uses a scalable VF.
I've changed LoopVectorizationCostModel::selectEpilogueVectorizationFactor
so that we convert the scalable VF into a fixed-width VF and do profitability
checks on that instead. In addition, since the scalable and fixed-width VFs
live in different VPlans that means I had to change the calls to
LVP.hasPlanWithVFs so that we only pass in the fixed-width VF.
New tests added here:
Transforms/LoopVectorize/AArch64/sve-epilog-vect.ll
Differential Revision: https://reviews.llvm.org/D109432
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
0 files changed, 0 insertions, 0 deletions