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| author | Christophe Lyon <christophe.lyon@arm.com> | 2022-10-03 12:26:03 +0200 |
|---|---|---|
| committer | Christophe Lyon <christophe.lyon@arm.com> | 2022-10-03 15:13:10 +0200 |
| commit | 06aa66af7d0dacc1b247d9e38175e789ef159191 (patch) | |
| tree | 39b31f394cd4e06953f9043295a0148399b68c3c /libcpp/directives.c | |
| parent | 53acc10ee81116536d4eb6fbba62a90f329b75ce (diff) | |
| download | gcc-06aa66af7d0dacc1b247d9e38175e789ef159191.zip gcc-06aa66af7d0dacc1b247d9e38175e789ef159191.tar.gz gcc-06aa66af7d0dacc1b247d9e38175e789ef159191.tar.bz2 | |
arm: Add missing early clobber to MVE vrev64q_m patterns
Like the non-predicated vrev64q patterns, mve_vrev64q_m_<supf><mode>
and mve_vrev64q_m_f<mode> need an early clobber constraint, otherwise
we can generate an unpredictable instruction:
Warning: 64-bit element size and same destination and source operands makes instruction UNPREDICTABLE
when calling vrevq64_m* with the same first and second arguments.
OK for trunk?
Thanks,
Christophe
gcc/ChangeLog:
* config/arm/mve.md (mve_vrev64q_m_<supf><mode>): Add early
clobber.
(mve_vrev64q_m_f<mode>): Likewise.
gcc/testsuite/ChangeLog:
* gcc.target/arm/mve/intrinsics/vrev64q_m_s16-clobber.c: New test.
Diffstat (limited to 'libcpp/directives.c')
0 files changed, 0 insertions, 0 deletions