On Fri, 7 Feb 2014, Andreas Krebbel wrote:
> Hi,
>
> on S/390 128 bit atomic operations are not allowed for misaligned
> operands. The expanders are supposed to FAIL in that case. While it
> works for the other routines atomic_load/store it does not work
> currently during compare and swap expa
On Fri, Feb 07, 2014 at 12:58:37PM +0100, Andreas Krebbel wrote:
> 2014-02-07 Andreas Krebbel
>
> * optabs.c (expand_atomic_compare_and_swap): Allow expander to
> fail.
Ok.
> --- a/gcc/optabs.c
> +++ b/gcc/optabs.c
> @@ -7383,12 +7383,13 @@ expand_atomic_compare_and_swap (rtx *pta
Hi,
on S/390 128 bit atomic operations are not allowed for misaligned
operands. The expanders are supposed to FAIL in that case. While it
works for the other routines atomic_load/store it does not work
currently during compare and swap expansion.
The patch just turns an expand_insn into maybe_e
