[Bug middle-end/19698] [3.4/4.0 Regression] Infinite loop in update_life_info

cvs-commit at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Sun Feb 20 17:23:00 GMT 2005


------- 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



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19698



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