diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2021-04-13 12:43:39 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-04-13 12:43:39 +0200 |
| commit | f6ba5d039f988babdd99b5cdfb4557c380e57d69 (patch) | |
| tree | 7810bdb3edd8761a9ebe04676ec9882965f6c97e /libcpp/directives.c | |
| parent | 1174314811af52779497462f26d21ea0038d1a85 (diff) | |
| download | gcc-f6ba5d039f988babdd99b5cdfb4557c380e57d69.zip gcc-f6ba5d039f988babdd99b5cdfb4557c380e57d69.tar.gz gcc-f6ba5d039f988babdd99b5cdfb4557c380e57d69.tar.bz2 | |
aarch64: Restore bfxil optimization [PR100028]
Similarly to PR87763 for bfi, the GCC 9 combiner changes to not combine
moves from hard registers regressed the following testcase where we no
longer recognize bfxil and emit 3 instructions instead.
The following patch adds define_insn patterns that match what the combiner
is trying to match in these cases. I haven't been able to see patterns
with the other order of the IOR operands, seems the IL is canonicalized this
way no matter what is written in the source.
2021-04-13 Jakub Jelinek <jakub@redhat.com>
PR target/100028
* config/aarch64/aarch64.md (*aarch64_bfxil<mode>_extr,
*aarch64_bfxilsi_extrdi): New define_insn patterns.
* gcc.target/aarch64/pr100028.c: New test.
Diffstat (limited to 'libcpp/directives.c')
0 files changed, 0 insertions, 0 deletions