https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125132
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|builtin-memmove-12.c fails |builtin-memmove-12.c and
|with --enable-default-pie |pr122343-4a.c fails with
| |--enable-default-pie
--- Comment #1 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Likewise for pr122343-4a.c:
extern volatile int bar;
int
foo (void)
{
int h = bar;
int r = bar;
asm volatile ("barrier" ::: "memory");
int p = bar;
p = p + r;
return p - bar;
}
is compiled to
movl bar(%rip), %eax
movl bar(%rip), %eax
barrier
addl bar(%rip), %eax
subl bar(%rip), %eax
without -fpie, but
movl bar(%rip), %eax
movl bar(%rip), %eax
barrier
movl bar(%rip), %edx
addl %edx, %eax
subl bar(%rip), %eax
with -fpie.
