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| author | Christophe Lyon <christophe.lyon@arm.com> | 2022-03-18 08:30:00 +0000 |
|---|---|---|
| committer | Christophe Lyon <christophe.lyon@arm.com> | 2022-03-25 17:26:33 +0000 |
| commit | 3ab5c8cd03d92bf4ec41e351820349d92fbc40c4 (patch) | |
| tree | d7fb4667893cc9150e2bea0d960af8e83a732069 /gcc/cp/constexpr.cc | |
| parent | 25725506b85f478076770942d76799c54310c696 (diff) | |
| download | gcc-3ab5c8cd03d92bf4ec41e351820349d92fbc40c4.zip gcc-3ab5c8cd03d92bf4ec41e351820349d92fbc40c4.tar.gz gcc-3ab5c8cd03d92bf4ec41e351820349d92fbc40c4.tar.bz2 | |
arm: Revert Auto-vectorization for MVE: add pack/unpack patterns PR target/104882
This reverts commit r12-1434-g046a3beb1673bf to fix PR target/104882.
As discussed in the PR, it turns out that the MVE ISA has no natural
mapping with GCC's vec_pack_trunc / vec_unpack standard patterns, unlike
Neon or SVE for instance.
This patch also adds the executable testcase provided in the PR.
This test passes at -O3 because the generated code does not need
to use the pack/unpack patterns, hence the use of -O2 which now
triggers vectorization since a few months ago.
2022-03-18 Christophe Lyon <christohe.lyon@arm.com>
PR target/104882
Revert
2021-06-11 Christophe Lyon <christophe.lyon@linaro.org>
gcc/
* config/arm/mve.md (mve_vec_unpack<US>_lo_<mode>): Delete.
(mve_vec_unpack<US>_hi_<mode>): Delete.
(@mve_vec_pack_trunc_lo_<mode>): Delete.
(mve_vmovntq_<supf><mode>): Remove '@' prefix.
* config/arm/neon.md (vec_unpack<US>_hi_<mode>): Move back
from vec-common.md.
(vec_unpack<US>_lo_<mode>): Likewise.
(vec_pack_trunc_<mode>): Rename from
neon_quad_vec_pack_trunc_<mode>.
* config/arm/vec-common.md (vec_unpack<US>_hi_<mode>): Delete.
(vec_unpack<US>_lo_<mode>): Delete.
(vec_pack_trunc_<mode>): Delete.
PR target/104882
gcc/testsuite/
* gcc.target/arm/simd/mve-vclz.c: Update expected results.
* gcc.target/arm/simd/mve-vshl.c: Likewise.
* gcc.target/arm/simd/mve-vec-pack.c: Delete.
* gcc.target/arm/simd/mve-vec-unpack.c: Delete.
* gcc.target/arm/simd/pr104882.c: New test.
Diffstat (limited to 'gcc/cp/constexpr.cc')
0 files changed, 0 insertions, 0 deletions