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| author | Jakub Jelinek <jakub@redhat.com> | 2021-04-27 10:17:45 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-04-27 10:17:45 +0200 |
| commit | 71c8aaf29bb122ebe5e67c84903fd23ff05f04ec (patch) | |
| tree | 245df97b124278d528317374b2229c502efe67e6 /gcc/tree-ssa-alias.c | |
| parent | 7d6bb80931b429631f63e0fd27bee95f32eb57a9 (diff) | |
| download | gcc-71c8aaf29bb122ebe5e67c84903fd23ff05f04ec.zip gcc-71c8aaf29bb122ebe5e67c84903fd23ff05f04ec.tar.gz gcc-71c8aaf29bb122ebe5e67c84903fd23ff05f04ec.tar.bz2 | |
i386: Improve [QH]Imode rotates with masked shift count [PR99405]
The following testcase shows that while we nicely optimize away the
useless and? of shift count before rotation for [SD]Imode rotates,
we don't do that for [QH]Imode.
The following patch optimizes that by using the right iterator on those
4 patterns.
2021-04-27 Jakub Jelinek <jakub@redhat.com>
PR target/99405
* config/i386/i386.md (*<insn><mode>3_mask, *<insn><mode>3_mask_1):
For any_rotate define_insn_split and following splitters, use
SWI iterator instead of SWI48.
* gcc.target/i386/pr99405.c: New test.
Diffstat (limited to 'gcc/tree-ssa-alias.c')
0 files changed, 0 insertions, 0 deletions