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Re: Sched patch: better condition mutex testing

From: Vladimir Makarov <vmakarov at redhat dot com>
To: Bernd Schmidt <bernds at codesourcery dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Mon, 30 May 2011 17:27:00 -0400
Subject: Re: Sched patch: better condition mutex testing
References: <4DDF5D5B.2090707@codesourcery.com>

On 05/27/2011 04:14 AM, Bernd Schmidt wrote:

When regrename is enabled, it makes new copies of its replacement
registers, which means that pointer equality tests can't be used
afterwards to check whether two regs are equal.
sched_insn_conditions_mutex_p has one such test, and it causes
pessimized code in some situations on C6X.

The following patch fixes it. Regression tested with a 4.5 c6x-elf
compiler. I tried to bootstrap ia64, but that has PR48496. Ok?

Sure, It is ok. Thanks, Bernd.

References:
- Sched patch: better condition mutex testing
  - From: Bernd Schmidt

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