[Bug tree-optimization/22591] [4.0 regression] wrong alias information causes an incorrect redundant load elimination

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-07-26 20:54 -------
Subject: Bug 22591

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	dnovillo@gcc.gnu.org	2005-07-26 20:54:31

Modified files:
	gcc            : ChangeLog tree-ssa-alias.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/gcc.dg/tree-ssa: 20030807-7.c 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: pr22591.c 

Log message:
	PR 22591
	* tree-ssa-alias.c (may_alias_p): Remove shortcut that tests
	whether a pointer of type T * may point to objects of type T *.
	
	testsuite/ChangeLog
	
	PR 22591
	* gcc.dg/tree-ssa/pr22591.c: New test.
	* gcc.dg/tree-ssa/20030807-7.c: XFAIL everywhere.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.332&r2=2.7592.2.333
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-alias.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.71.2.1&r2=2.71.2.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.301&r2=1.5084.2.302
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr22591.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/20030807-7.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.3&r2=1.3.36.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22591