[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-08-13 10:09 -------
My .vars dump: 
foo (p) 
{ 
<bb 0>: 
  *p = 0; 
  return 0; 
 
} 
 

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21574

[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-08-13 10:12 -------
Whoops, didn't want to close it!!  Wanted to say that the patch 
from Bug 23094 fixes this for me. 

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21574

[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-17 07:29 -------
Subject: Bug 21574

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	steven@gcc.gnu.org	2005-08-17 07:27:49

Modified files:
	gcc            : ChangeLog tree-ssa-ccp.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: pr21574.c 

Log message:
	PR tree-optimization/21574
	* tree-ssa-ccp.c (likely_value): If the right hand side is a
	constant, return CONSTANT.
	(ccp_lattice_meet): Use operand_equal_p instead of simple_cst_equal.
	(ccp_fold, visit_assignment): Likewise.
	(evaluate_stmt): Handle UNDEFINED and UNKNOWN_VAL the same way.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9757&r2=2.9758
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-ccp.c.diff?cvsroot=gcc&r1=2.86&r2=2.87
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5934&r2=1.5935
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr21574.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21574

[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-17 12:11 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21574

[Bug tree-optimization/21574] store_ccp doesn't see through a store.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-14 21:21 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-05-14 21:21:37
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21574