Re: [Patch] PR rtl-optimization/71150, guard in_class_p check with REG_P

[Vladimir Makarov <vmakarov at redhat dot com>]

On 05/17/2016 06:02 AM, Jiong Wang wrote:
> This bug is introduced by my commit r236181 where the inner rtx of
> SUBREG haven't been checked while it should as "in_class_p" only
> works with REG, and SUBREG_REG is actually not always REG.  If REG_P
> check failed,  then we should fall back to normal code patch. The
> following simple testcase for x86 can reproduce this bug.
>
> long
> foo (long a)
> {
>   return (unsigned) foo;
> }
>
> OK for trunk?
Yes.  Thank you, Jiong.
> x86-64 bootstrap OK and no regression on check-gcc/g++.
>
> 2016-05-17  Jiong Wang  <jiong.wang@arm.com>
>
> gcc/
>   PR rtl-optimization/71150
>   * lra-constraint (process_addr_reg): Guard "in_class_p" with REG_P 
> check.