GCC modified for the FreeChainXenon project
254cbf7266
The recent r13-458 change to introduce vec_cmpeqv1tiv1ti and add TARGET_SSE2 support to vec_cmpeqv2div2di works nicely for equality comparisons, but as the testcase shows doesn't work for inequality comparisons. For EQ if we perform comparison with twice as many half-sized elemenets, the result should be ~0 when both halves are ~0 only (both halves need to be equal for the whole to be equal), otherwise 0, so AND is the correct operation for it. But for NE, the result should be ~0 when either of the halves is ~0 (if either half is not equal, the whole is not equal) and so the right operation for NE is IOR, not AND. 2022-05-17 Jakub Jelinek <jakub@redhat.com> PR target/105613 * config/i386/sse.md (vec_cmpeqv2div2di, vec_cmpeqv1tiv1ti): Use andv4si3 only for EQ, for NE use iorv4si3 instead. * gcc.c-torture/execute/pr105613.c: New test. |
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