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| author | Benjamin Maxwell <benjamin.maxwell@arm.com> | 2022-11-16 10:45:48 +0000 |
|---|---|---|
| committer | Cullen Rhodes <cullen.rhodes@arm.com> | 2022-11-16 11:17:07 +0000 |
| commit | 18149218939774b5eac228adc5c3958fbaac9028 (patch) | |
| tree | b87387adb1f7bec136243a27ba5a722ad98b3068 /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | |
| parent | 5ea7b6b78ff6c7d914e0e9279a368966be5f13df (diff) | |
| download | llvm-18149218939774b5eac228adc5c3958fbaac9028.zip llvm-18149218939774b5eac228adc5c3958fbaac9028.tar.gz llvm-18149218939774b5eac228adc5c3958fbaac9028.tar.bz2 | |
[AArch64][CodeGen] Remove redundant vector negations before concat
This adds a new canonicalization rule to replace concats of truncated
negations with a negation of the concatenated truncates, e.g.
(concat_vectors (v4i16 (truncate (not (v4i32)))),
(v4i16 (truncate (not (v4i32)))))
->
(not (concat_vectors (v4i16 (truncate (v4i32))),
(v4i16 (truncate (v4i32)))))
Doing this allows avoiding redundant negations being emitted in
certain cases.
Reviewed By: peterwaller-arm
Differential Revision: https://reviews.llvm.org/D137433
Diffstat (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp')
0 files changed, 0 insertions, 0 deletions