On 2017.04.20 at 22:29 +0200, Uros Bizjak wrote:
>
> PR target/79804
> * gcc.target/i386/pr79804.c: New test.
>
> Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
>
> Committed to mainline SVN.
> --- testsuite/gcc.target/i386/pr79804.c (nonexistent)
> +++ testsuite/gcc.target/i386/pr79804.c (working copy)
> @@ -0,0 +1,10 @@
> +/* PR target/79804 */
> +/* { dg-do compile } */
> +/* { dg-options "" } */
> +
> +void foo (void)
> +{
> + register int r20 asm ("20");
> +
> + asm volatile ("# %0" : "=r"(r20)); /* { dg-error "invalid use of
> register" } */
> +}
The test fails without optimizations:
gcc/testsuite/gcc.target/i386/pr79804.c: In function ‘foo’:
gcc/testsuite/gcc.target/i386/pr79804.c:10:1: error: frame cannot be used in
asm here
}
^
gcc/testsuite/gcc.target/i386/pr79804.c:9:3: error: invalid 'asm': invalid use
of register 'frame'
asm volatile ("# %0" : "=r"(r20)); /* { dg-error "invalid use of register"
} */
^~~
--
Markus
