[PATCH] Fix -mcpu=power8 atomic expansion (PR target/69644)

David Edelsohn dje.gcc@gmail.com
Wed Feb 3 22:34:00 GMT 2016


On Wed, Feb 3, 2016 at 5:28 PM, Jakub Jelinek <jakub@redhat.com> wrote:
> Hi!
>
> rs6000_expand_atomic_compare_and_swap uses oldval directly in
> a comparison instruction, but oldval might be a CONST_INT not suitable
> for the instruction (such as in the testcase below in SImode comparison
> 0x8000 constant).  We need to force those into register if they don't
> satisfy the predicate.
>
> Bootstrapped/regtested on powerpc64{,le}-linux, ok for trunk?
>
> 2016-02-03  Jakub Jelinek  <jakub@redhat.com>
>
>         PR target/69644
>         * config/rs6000/rs6000.c (rs6000_expand_atomic_compare_and_swap):
>         Force oldval into register if it does not satisfy reg_or_short_operand
>         predicate.  Fix up formatting.
>
>         * gcc.dg/pr69644.c: New test.

Okay.

Thanks, David



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