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Re: PR rtl-optimization/47925: deleting trivially live instructions
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Eric Botcazou <ebotcazou at adacore dot com>
- Cc: Richard Sandiford <richard dot sandiford at linaro dot org>, gcc-patches at gcc dot gnu dot org, patches at linaro dot org
- Date: Tue, 1 Mar 2011 11:05:07 +0100
- Subject: Re: PR rtl-optimization/47925: deleting trivially live instructions
- References: <g4pqqcxheb.fsf@linaro.org> <201103010029.16271.ebotcazou@adacore.com>
On Tue, Mar 1, 2011 at 12:29 AM, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> The bug showed up as a wrong-code regression in a modified version of Qt,
>> but I haven't yet found a testcase that fails with 4.6 but passes with
>> an older GCC. ?Is the patch OK now regardless, or should it wait for 4.7?
>
> Fine for 4.6 with me, but I think you also need an ack from a RM.
Ok with me.
Richard.
>> ? ? ? PR rtl-optimization/47925
>> ? ? ? * cse.c (count_reg_usage): Don't ignore the SET_DEST of instructions
>> ? ? ? with side effects. ?Remove the more-specific check for volatile asms.
>
> OK if you adjust the head comment of the function.
>
> --
> Eric Botcazou
>