[Bug middle-end/21331] [4.0 Regression] Incorrect folding of comparison

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-21 16:59 -------
Subject: Bug 21331

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	pinskia@gcc.gnu.org	2005-05-21 16:58:46

Modified files:
	gcc            : ChangeLog tree-cfg.c tree-gimple.c 
	gcc/fortran    : ChangeLog trans-intrinsic.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/compile: pr21293.c 
	gcc/testsuite/gcc.c-torture/execute: pr21331.c 

Log message:
	2005-05-21  Andrew Pinski
	
	Backport from the mainline:
	2005-03-14  Zdenek Dvorak  <dvorakz@suse.cz>
	* fortran/trans-intrinsic.c (gfc_conv_intrinsic_ishft): Convert
	the argument of the shift to the unsigned type.
	
	2005-05-21  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR middle-end/21331
	PR tree-opt/21293
	Backport from the mainline:
	2005-03-14  Zdenek Dvorak  <dvorakz@suse.cz>
	* tree-cfg.c (find_taken_edge_cond_expr): Use zero_p instead of
	integer_zerop.
	* tree-gimple.c (is_gimple_min_invariant): Consider overflowed
	constants invariant.
	2004-05-21  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR middle-end/21331
	PR tree-opt/21293
	* gcc.c-torture/compile/pr21293.c: New test.
	* gcc.c-torture/execute/pr21331.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=2.7592.2.256&r2=2.7592.2.257
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-cfg.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.151&r2=2.151.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-gimple.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.35&r2=2.35.12.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.335.2.53&r2=1.335.2.54
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-intrinsic.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.43.10.4&r2=1.43.10.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.191&r2=1.5084.2.192
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/pr21293.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.c-torture/execute/pr21331.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=21331