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Date: Wed, 30 Sep 2015 13:33:00 -0000
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Subject: Re: [PATCH, PR target/67761] Fix i686-*-* bootstrap comparison failure
From: Ilya Enkovich <enkovich.gnu@gmail.com>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
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2015-09-30 9:06 GMT+03:00 Uros Bizjak <ubizjak@gmail.com>:
> Hello!
>
>> My recenttly introduced STV pass doesn't skip debug instructions and it causes transformation
>> (mistly cost computation) depending on debug info.  It causes bootstrap comparison failure.  This
>> patch fixes.  Bootstrapped for i686-linux.  Testing for x86_64-unknown-linux-gnu{,m32} is in
>> progress.  OK for trunk if pass?
>
> IMO, it would be also beneficial to bootstrap with slm default
> architecture, so new code paths get some coverage via bootstrap.

I bootstrapped with --with-cpu=slm also.

>
>> gcc/
>>
>> 2015-09-29  Ilya Enkovich  <enkovich.gnu@gmail.com>
>>
>> * config/i386/i386.c (scalar_chain::analyze_register_chain): Ignore
>> debug insns.
>> (scalar_chain::convert_reg): Likewise.
>>
>> gcc/testsuite/
>>
>> 2015-09-29  Ilya Enkovich  <enkovich.gnu@gmail.com>
>>
>> * gcc.target/i386/pr67761.c: New test.
>
> OK.

Thanks!

Ilya

>
> Thanks,
> Uros.