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[patch] a fix for PR45312

From: Vladimir Makarov <vmakarov at redhat dot com>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>
Cc: uweigand at gcc dot gnu dot org
Date: Thu, 09 Sep 2010 11:22:30 -0400
Subject: [patch] a fix for PR45312

The following patch fixes PR45312. The details are on http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45312

I'd like to add that this bug is probably 15 years old and removing merge_assigned_reloads does not affect the code at least for SPEC2000 and many other benchmarks I tried on x86/x86_64 because subsequent optimizations can do the same as this function (mainly removing reload in the same hard register from the same source).

Ok to commit into the trunk, gcc 4.4 and gcc 4.5 branch?

2010-09-09 Vladimir Makarov <vmakarov@redhat.com>

    PR middle-end/45312
    * reload1.c (merge_assigned_reloads): Remove.
    (reload_as_needed): Don't call it.

Attachment: pr45312.patch
Description: Text document

Follow-Ups:
- Re: [patch] a fix for PR45312
  - From: Ulrich Weigand
- Re: [patch] a fix for PR45312
  - From: Jeff Law

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