[Bug rtl-optimization/21254] [4.0 regression] Incorrect code with -funroll-loops for multiple targets with same code

["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  2005-08-17 12:45 -------
Subject: Bug 21254

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	bonzini@gcc.gnu.org	2005-08-17 12:45:04

Modified files:
	gcc            : ChangeLog loop-iv.c loop-unroll.c 

Log message:
	2005-08-17  Paolo Bonzini  <bonzini@gnu.org>
	
	PR rtl-optimization/21254
	* loop-iv.c (iv_number_of_iterations): Simplify infiniteness
	assumptions for loops that otherwise do not roll.
	(find_simple_exit): Prefer # of iterations that is guaranteed
	not to be infinite.
	* loop-unroll.c (decide_peel_once_rolling,
	decide_peel_completely): Check whether the loop is infinite.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.374&r2=2.7592.2.375
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-iv.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.26&r2=2.26.12.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unroll.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.24&r2=1.24.12.1


------- Additional Comments From bonzini at gcc dot gnu dot org  2005-08-17 12:45 -------
Patch committed to 4.0 branch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21254