[Bug rtl-optimization/23299] [4.0 Regression] "classic" GCSE caused miscompilation

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-16 08:46 -------
Subject: Bug 23299

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	jakub@gcc.gnu.org	2005-08-16 08:46:21

Modified files:
	gcc            : ChangeLog rtlanal.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/opt: pr23299.C 

Log message:
	PR rtl-optimization/23299
	Backport from mainline
	2005-03-16 Dale Johannesen  <dalej@apple.com>
	* rtlanal.c (find_first_parameter_load):  Rewrite to
	return actual first param load or the call if none,
	instead of first in block, when not all loads exist.
	
	* g++.dg/opt/pr23299.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.370&r2=2.7592.2.371
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtlanal.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.211.8.1&r2=1.211.8.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.335&r2=1.5084.2.336
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/pr23299.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23299