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Fix PR57268

From: Dinar Temirbulatov <dinar at kugelworks dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Wed, 29 May 2013 16:01:50 +0400
Subject: Fix PR57268

Hi,
I noticed that the scheduler created long dependence list about ~9000
elements long and slowed compilation time for about an hour. Attached
patch flushes the dependence list is case of it is longer than
MAX_PENDING_LIST_LENGTH. Tested with gcc testsite on x86_64-linux-gnu
with c and c++ enabled. Ok for trunk?
           thanks, Dinar.

2013-05-28 Dinar Temirbulatov <dinar@kugelworks.com>

            PR rtl-optimization/57268
            * sched-deps.c (sched_analyze_2): Flush dependence list
then it is longer than MAX_PENDING_LIST_LENGTH.

Attachment: fix.patch
Description: Binary data

Follow-Ups:
- Re: Fix PR57268
  - From: Steven Bosscher

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