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[Bug middle-end/19698] [3.4/4.0 Regression] Infinite loop in update_life_info
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 Feb 2005 11:09:39 -0000
- Subject: [Bug middle-end/19698] [3.4/4.0 Regression] Infinite loop in update_life_info
- References: <20050129191719.19698.schwab@suse.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-02-20 11:09 -------
Subject: Bug 19698
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: steven@gcc.gnu.org 2005-02-20 11:09:16
Modified files:
gcc : ChangeLog cfgloop.c flow.c function.h
Log message:
PR middle-end/19698
* function.h (struct function): New field `max_loop_depth'.
* cfgloop.c (establish_preds): Update maximum loop depth seen so far.
(flow_loops_find): Reset the max loop depth count before finding loops.
* flow.c (MAX_LIVENESS_ROUNDS): New constant.
(update_life_info_in_dirty_blocks): Remove 2002-05-28 workaround.
(calculate_global_regs_live): Make sure the loop will terminate
when the initial sets are not empty.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7538&r2=2.7539
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloop.c.diff?cvsroot=gcc&r1=1.47&r2=1.48
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&r1=1.618&r2=1.619
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/function.h.diff?cvsroot=gcc&r1=1.139&r2=1.140
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19698