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Re: [PATCH] Add testcase for possible bug in gcc-4_4 ix86 branch
On Mon, Dec 13, 2010 at 08:20:38PM -0800, Ian Lance Taylor wrote:
> asharif tools <asharif.tools@gmail.com> writes:
>
> > Index: gcc/testsuite/gcc.target/i386/max-stack-align.c
> > ===================================================================
> > --- gcc/testsuite/gcc.target/i386/max-stack-align.c (revision 0)
> > +++ gcc/testsuite/gcc.target/i386/max-stack-align.c (revision 0)
> > @@ -0,0 +1,14 @@
> > +/* { dg-do compile } */
> > +/* { dg-options "-fomit-frame-pointer" } */
> > +/* { dg-require-effective-target lp64 } */
> > +
> > +void foo()
> > +{
> > + int a=0, b=0, c=0, e=0, f=0, g=0, h=0, i=0;
> > + __asm__ __volatile__ ("addl %%rbp,%%rbp"
> > + : "=rbp"(a)
> > + : "rbp"(b)
> > + : "rbp"
> > + );
> > +}
>
> You should be able to use "=r" and "r" instead of "=rbp" and "rbp". If
> that works, then this patch is OK.
Also, please try to trim the list of variables (c through i), if you can
still reproduce the problem with the testcase. And you can probably use
just "" instead of "addl %%rbp,%%rbp".
Jakub