[Bug optimization/11741] internal compiler error at gcse.c:5318

[cvs-commit at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11741



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-09-26 18:23 -------
Subject: Bug 11741

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2003-09-26 18:23:33

Modified files:
	gcc            : ChangeLog gcse.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: 20030926-1.c 

Log message:
	PR optimization/11741
	* gcse.c (pre_insert_copy_insn): Tweak the logic for finding the
	appropriate set to match that in hash_scan_insn.  Fall back to
	the original copy method, if we can't validate changing insn.
	(pre_delete): Only delete instructions that have a single_set,
	instead of aborting when we encounter an PARALLEL insn with more
	then one SET.
	
	* gcc.dg/20030926-1.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1184&r2=2.1185
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&r1=1.274&r2=1.275
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3081&r2=1.3082
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20030926-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1