https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97301
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the right fix is:
2021-01-22 Jakub Jelinek <ja...@redhat.com>
PR testsuite/97301
* config/rs6000/mmintrin.h (__m64): Add __may_alias__ attribute.
--- gcc/config/rs6000/mmintrin.h.jj 2021-01-04 10:25:46.794143679 +0100
+++ gcc/config/rs6000/mmintrin.h 2021-01-22 13:03:28.511043929 +0100
@@ -58,7 +58,8 @@
#include <altivec.h>
/* The Intel API is flexible enough that we must allow aliasing with other
vector types, and their scalar components. */
-typedef __attribute__ ((__aligned__ (8))) unsigned long long __m64;
+typedef __attribute__ ((__aligned__ (8),
+ __may_alias__)) unsigned long long __m64;
typedef __attribute__ ((__aligned__ (8)))
union
which will then match the ppc64le *intrin.h emulation match what x86 is doing
TBAA-wise. x86 mmintrin.h has:
typedef int __m64 __attribute__ ((__vector_size__ (8), __may_alias__));
