[PATCH] x86: Properly check register CFA offset

[H.J. Lu]

On Wed, Jul 26, 2017 at 12:04 PM, Uros Bizjak <ubizjak@gmail.com> wrote:
> On Wed, Jul 26, 2017 at 6:14 PM, H.J. Lu <hongjiu.lu@intel.com> wrote:
>>
>> X86 epilogue saves register at CFA offset.  Since its location on stack
>> is computed as CFA - its CFA_OFFSET, CFA_OFFSET points the end of the
>> saved register location on stack.  This patch updates sp_valid_at and
>> fp_valid_at to properly check register CFA offset.
>>
>> Tested on x86-64.  OK for trunk if there are no regressions on i686?
>>
>> Thanks.
>>
>> H.J.
>> --
>> gcc/
>>
>>         PR target/81563
>>         * config/i386/i386.c (sp_valid_at): Properly check CFA offset.
>>         (fp_valid_at): Likewise.
>>
>> gcc/testsuite/
>>
>>         PR target/81563
>>         * gcc.target/i386/pr81563.c: New test
>
> OK.
>

This is what I checked in with the updated commit log.

Thanks.

-- 
H.J.
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