[PATCH][AArch64] Improve bit-test-branch pattern to avoid unnecessary register clobber

[Marcus Shawcroft]

On 27 January 2015 at 14:31, Jiong Wang <jiong.wang@arm.com> wrote:

> 2015-01-19  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
>             Jiong Wang  <jiong.wang@arm.com>
>
>   gcc/
>     * config/aarch64/aarch64.md (tb<optab><mode>1): Clobber CC reg instead
> of scratch reg.
>     (cb<optab><mode>1): Likewise.
>     * config/aarch64/iterators.md (bcond): New define_code_attr.

OK /Marcus


>   gcc/testsuite/
>     * gcc.dg/long_branch.c: New testcase.