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| author | Kyrylo Tkachov <ktkachov@nvidia.com> | 2024-11-05 05:10:22 -0800 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@nvidia.com> | 2024-11-05 17:58:00 +0100 |
| commit | 161e246cf32f1298400aa3c1d86110490a3cd0ce (patch) | |
| tree | 8f3bfe5a21604b500f6a914f9ff8c1eac391f870 /gcc/fortran/error.cc | |
| parent | f185a89fc4b6e6f5ae5475cd7c723b3acf39976b (diff) | |
| download | gcc-161e246cf32f1298400aa3c1d86110490a3cd0ce.zip gcc-161e246cf32f1298400aa3c1d86110490a3cd0ce.tar.gz gcc-161e246cf32f1298400aa3c1d86110490a3cd0ce.tar.bz2 | |
PR target/117449: Restrict vector rotate match and split to pre-reload
The vector rotate splitter has some logic to deal with post-reload splitting
but not all cases in aarch64_emit_opt_vec_rotate are post-reload-safe.
In particular the ROTATE+XOR expansion for TARGET_SHA3 can create RTL that
can later be simplified to a simple ROTATE post-reload, which would then
match the insn again and try to split it.
So do a clean split pre-reload and avoid going down this path post-reload
by restricting the insn_and_split to can_create_pseudo_p ().
Bootstrapped and tested on aarch64-none-linux.
Signed-off-by: Kyrylo Tkachov <ktkachov@nvidia.com>
gcc/
PR target/117449
* config/aarch64/aarch64-simd.md (*aarch64_simd_rotate_imm<mode>):
Match only when can_create_pseudo_p ().
* config/aarch64/aarch64.cc (aarch64_emit_opt_vec_rotate): Assume
can_create_pseudo_p ().
gcc/testsuite/
PR target/117449
* gcc.c-torture/compile/pr117449.c: New test.
Diffstat (limited to 'gcc/fortran/error.cc')
0 files changed, 0 insertions, 0 deletions