https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92080
Hongtao Liu <liuhongt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |liuhongt at gcc dot gnu.org
--- Comment #7 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Another simple case is
typedef int v4si __attribute__((vector_size(16)));
typedef short v8hi __attribute__((vector_size(16)));
v8hi a;
v4si b;
void
foo ()
{
b = __extension__(v4si){0, 0, 0, 0};
a = __extension__(v8hi){0, 0, 0, 0, 0, 0, 0, 0};
}
GCC generates 2 pxor
foo():
vpxor xmm0, xmm0, xmm0
vmovdqa XMMWORD PTR b[rip], xmm0
vpxor xmm0, xmm0, xmm0
vmovdqa XMMWORD PTR a[rip], xmm0
ret
