| commit | 98452668d362bb9e6358f7eb5cff69f4f5ab1d45 | |
| author | Alex Coplan <alex.coplan@arm.com> | |
| Tue, 19 May 2020 19:33:20 +0000 (19 20:33 +0100) | ||
| committer | Alex Coplan <alex.coplan@arm.com> | |
| Tue, 19 May 2020 19:43:57 +0000 (19 20:43 +0100) | ||
| tree | 597495ab1d146c96945da3edd2dc3a4d80d49ce6 | treesnapshot (tar.gz zip) |
| parent | 25c284f14881eeb68b9ddf16c6760b9535d824a8 | commitdiff |
[aarch64] PR target/94591: Don't generate invalid REV64 insns
This fixes PR94591. The problem was the function aarch64_evpc_rev_local()
matching vector permutations that were not reversals. In particular, prior to
this patch, this function matched the identity permutation which led to
generating bogus REV64 insns which were rejected by the assembler.
gcc/
PR target/94591
* config/aarch64/aarch64.c (aarch64_evpc_rev_local): Don't match
identity permutation.
gcc/testsuite/
PR target/94591
* gcc.c-torture/execute/pr94591.c: New test.
This fixes PR94591. The problem was the function aarch64_evpc_rev_local()
matching vector permutations that were not reversals. In particular, prior to
this patch, this function matched the identity permutation which led to
generating bogus REV64 insns which were rejected by the assembler.
gcc/
PR target/94591
* config/aarch64/aarch64.c (aarch64_evpc_rev_local): Don't match
identity permutation.
gcc/testsuite/
PR target/94591
* gcc.c-torture/execute/pr94591.c: New test.