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| author | Roman Lebedev <lebedev.ri@gmail.com> | 2019-07-03 09:41:35 +0000 |
|---|---|---|
| committer | Roman Lebedev <lebedev.ri@gmail.com> | 2019-07-03 09:41:35 +0000 |
| commit | c4b83a6054bb4f4fd35a61b1a3cbcc7588e3a1af (patch) | |
| tree | ecbb592d65d6469a85cf5743f6792e3725508366 /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | ac407a7b4a9b0aca70a62cce52e43ad3c5a2686b (diff) | |
| download | llvm-c4b83a6054bb4f4fd35a61b1a3cbcc7588e3a1af.zip llvm-c4b83a6054bb4f4fd35a61b1a3cbcc7588e3a1af.tar.gz llvm-c4b83a6054bb4f4fd35a61b1a3cbcc7588e3a1af.tar.bz2 | |
[Codegen][X86][AArch64][ARM][PowerPC] Inc-of-add vs sub-of-not (PR42457)
Summary:
This is the backend part of [[ https://bugs.llvm.org/show_bug.cgi?id=42457 | PR42457 ]].
In middle-end, we'd want to prefer the form with two adds - D63992,
but as this diff shows, not every target will prefer that pattern.
Out of 4 targets for which i added tests all seem to be ok with inc-of-add for scalars,
but only X86 prefer that same pattern for vectors.
Here i'm adding a new TLI hook, always defaulting to the inc-of-add,
but adding AArch64,ARM,PowerPC overrides to prefer inc-of-add only for scalars.
Reviewers: spatel, RKSimon, efriedma, t.p.northover, hfinkel
Reviewed By: efriedma
Subscribers: nemanjai, javed.absar, kristof.beyls, kbarton, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64090
llvm-svn: 365010
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions