https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97301
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:c63f091db89a56ae56b2bfa2ba4d9e956bd9693f commit r11-6879-gc63f091db89a56ae56b2bfa2ba4d9e956bd9693f Author: Jakub Jelinek <ja...@redhat.com> Date: Sat Jan 23 09:41:58 2021 +0100 rs6000: Fix up __m64 typedef in mmintrin.h [PR97301] The x86 __m64 type is defined as: /* The Intel API is flexible enough that we must allow aliasing with other vector types, and their scalar components. */ typedef int __m64 __attribute__ ((__vector_size__ (8), __may_alias__)); and so matches the comment above it in that reads and stores through pointers to __m64 can alias anything. But in the rs6000 headers that is the case only for __m128, but not __m64. The following patch adds that attribute, which fixes the FAIL: gcc.target/powerpc/sse-movhps-1.c execution test FAIL: gcc.target/powerpc/sse-movlps-1.c execution test regressions that appeared when Honza improved ipa-modref. 2021-01-23 Jakub Jelinek <ja...@redhat.com> PR testsuite/97301 * config/rs6000/mmintrin.h (__m64): Add __may_alias__ attribute.
