[Bug rtl-optimization/20290] [4.0/4.1 Regression] Miscompilation on ppc/arm with -Os

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-02 16:53 -------
Subject: Bug 20290

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	aoliva@gcc.gnu.org	2005-04-02 16:53:44

Modified files:
	gcc            : ChangeLog loop.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: loop-ivopts-2.c 

Log message:
	gcc/ChangeLog:
	PR rtl-optimization/20290
	* loop.c (for_each_insn_in_loop): Don't assume the loop body runs
	in every iteration if the entry point is the exit test.
	gcc/testsuite/ChangeLog:
	PR rtl-optimization/20290
	* gcc.c-torture/execute/loop-ivopts-2.c: New.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8086&r2=2.8087
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop.c.diff?cvsroot=gcc&r1=1.524&r2=1.525
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5267&r2=1.5268
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/loop-ivopts-2.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20290