On Thu, Jan 16, 2014 at 09:40:33AM -0800, H.J. Lu wrote:
> On Thu, Jan 16, 2014 at 9:35 AM, Jakub Jelinek <ja...@redhat.com> wrote:
> > On Thu, Jan 16, 2014 at 08:06:07AM -0800, Richard Henderson wrote:
> >> On 01/15/2014 01:58 PM, Jakub Jelinek wrote:
> >> > On Wed, Jan 15, 2014 at 01:43:18PM -0800, Richard Henderson wrote:
> >> >> --- /dev/null
> >> >> +++ b/gcc/testsuite/gcc.target/i386/pr54694.c
> >> >> @@ -0,0 +1,11 @@
> >> >> +/* { dg-do compile } */
> >> >> +/* { dg-options "-O" } */
> >> >> +
> >> >> +register void *hfp __asm__("%ebp"); /* { dg-message "note: for"
> >> >> } */
> >> >
> >> > Shouldn't that be %rbp for x86_64? Or do we treat it the same?
> >>
> >> We treat it the same.
> >
> > BTW, your fix broke the gcc.target/i386/pr9771-1.c
> > test on i686-linux, the problem is that main normally dynamically realigns
> > the stack. Wonder if the test should be turned into dg-do compile,
> > or perhaps a hack like:
> > int xmain() __asm__ ("main");
> > int xmain()
> > instead of
> > int main()
> > to avoid the dynamic stack realigning in main (limit the test to *linux*
> > then?), supply main written in assembly, something else?
> >
> > Jakub
>
> gcc.target/i386/pr9771-1.c has
>
> register long *B asm ("ebp");
>
> It won't work without -maccumulate-outgoing-args.
Actually it does, with the above written hack for main it works
all of:
-m32 -O2 -fomit-frame-pointer -ffixed-ebp
-m32 -O2 -fomit-frame-pointer -ffixed-ebp -maccumulate-outgoing-args
-m32 -O2 -fomit-frame-pointer -ffixed-ebp -mno-accumulate-outgoing-args
Jakub
