[Bug tree-optimization/22303] New: CCP does not handle STRING

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* [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs
@ 2005-07-05  3:11 pinskia at gcc dot gnu dot org
  2005-07-05  3:16 ` [Bug tree-optimization/22303] " pinskia at gcc dot gnu dot org
                   ` (3 more replies)
  0 siblings, 4 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-05  3:11 UTC (permalink / raw)
  To: gcc-bugs

Take the following example:
static const char f[3] = "?";

int main(void)
{
  if (f[0] == '?')
    abort ();
  return 0;
}

We don't optitimize this at the tree level.

-- 
           Summary: CCP does not handle STRING_CSTs
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, TREE
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
  2005-07-05  3:11 [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs pinskia at gcc dot gnu dot org
@ 2005-07-05  3:16 ` pinskia at gcc dot gnu dot org
  2005-07-05  3:19 ` pinskia at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-05  3:16 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-05 03:16 -------
This is just like PR 14841 but that one is already fixed.
Kazu could you comment on this since you fixed the other bug?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kazu at gcc dot gnu dot org
           Severity|normal                      |enhancement


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
  2005-07-05  3:11 [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs pinskia at gcc dot gnu dot org
  2005-07-05  3:16 ` [Bug tree-optimization/22303] " pinskia at gcc dot gnu dot org
@ 2005-07-05  3:19 ` pinskia at gcc dot gnu dot org
  2005-07-05  3:34 ` hp at gcc dot gnu dot org
  2005-07-07 13:42 ` pinskia at gcc dot gnu dot org
  3 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-05  3:19 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-05 03:19 -------
I should note this was reduced from gcc.c-torture/execute/20000227-1.c and was pointed to me by 
Hans-Peter Nilsson.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
  2005-07-05  3:11 [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs pinskia at gcc dot gnu dot org
  2005-07-05  3:16 ` [Bug tree-optimization/22303] " pinskia at gcc dot gnu dot org
  2005-07-05  3:19 ` pinskia at gcc dot gnu dot org
@ 2005-07-05  3:34 ` hp at gcc dot gnu dot org
  2005-07-07 13:42 ` pinskia at gcc dot gnu dot org
  3 siblings, 0 replies; 14+ messages in thread
From: hp at gcc dot gnu dot org @ 2005-07-05  3:34 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hp at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
  2005-07-05  3:11 [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs pinskia at gcc dot gnu dot org
                   ` (2 preceding siblings ...)
  2005-07-05  3:34 ` hp at gcc dot gnu dot org
@ 2005-07-07 13:42 ` pinskia at gcc dot gnu dot org
  3 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-07 13:42 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-07 13:42 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-07-07 13:42:22
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

[parent not found: <bug-22303-6528@http.gcc.gnu.org/bugzilla/>]

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
@ 2006-05-08  9:57 ` rguenth at gcc dot gnu dot org
  2006-05-08 10:07 ` mueller at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-08  9:57 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from rguenth at gcc dot gnu dot org  2006-05-08 09:57 -------
Patch with discussion:
http://gcc.gnu.org/ml/gcc-patches/2006-04/msg01038.html


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
  2006-05-08  9:57 ` rguenth at gcc dot gnu dot org
@ 2006-05-08 10:07 ` mueller at gcc dot gnu dot org
  2006-05-08 10:07 ` mueller at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: mueller at gcc dot gnu dot org @ 2006-05-08 10:07 UTC (permalink / raw)
  To: gcc-bugs



-- 

mueller at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |mueller at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
  2006-05-08  9:57 ` rguenth at gcc dot gnu dot org
  2006-05-08 10:07 ` mueller at gcc dot gnu dot org
@ 2006-05-08 10:07 ` mueller at gcc dot gnu dot org
  2006-05-08 15:06 ` pinskia at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: mueller at gcc dot gnu dot org @ 2006-05-08 10:07 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #5 from mueller at gcc dot gnu dot org  2006-05-08 10:06 -------
I'll try taking care. 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (2 preceding siblings ...)
  2006-05-08 10:07 ` mueller at gcc dot gnu dot org
@ 2006-05-08 15:06 ` pinskia at gcc dot gnu dot org
  2006-05-08 15:53 ` pinskia at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-08 15:06 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #6 from pinskia at gcc dot gnu dot org  2006-05-08 15:06 -------
This is unrelated to that patch I think.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (3 preceding siblings ...)
  2006-05-08 15:06 ` pinskia at gcc dot gnu dot org
@ 2006-05-08 15:53 ` pinskia at gcc dot gnu dot org
  2006-05-08 16:01 ` pinskia at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-08 15:53 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from pinskia at gcc dot gnu dot org  2006-05-08 15:53 -------
*** Bug 27497 has been marked as a duplicate of this bug. ***


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (4 preceding siblings ...)
  2006-05-08 15:53 ` pinskia at gcc dot gnu dot org
@ 2006-05-08 16:01 ` pinskia at gcc dot gnu dot org
  2006-05-15 19:26 ` patchapp at dberlin dot org
                   ` (2 subsequent siblings)
  8 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-08 16:01 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #8 from pinskia at gcc dot gnu dot org  2006-05-08 16:01 -------
(In reply to comment #4)
> Patch with discussion:
> http://gcc.gnu.org/ml/gcc-patches/2006-04/msg01038.html

This is unrelated to that patch, PR 26781 references (in passing) what that
patch fixes.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (5 preceding siblings ...)
  2006-05-08 16:01 ` pinskia at gcc dot gnu dot org
@ 2006-05-15 19:26 ` patchapp at dberlin dot org
  2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
  2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
  8 siblings, 0 replies; 14+ messages in thread
From: patchapp at dberlin dot org @ 2006-05-15 19:26 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #9 from patchapp at dberlin dot org  2006-05-15 19:25 -------
Subject: Bug number PR22303

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-05/msg00332.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (6 preceding siblings ...)
  2006-05-15 19:26 ` patchapp at dberlin dot org
@ 2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
  2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
  8 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-16 15:34 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #11 from rguenth at gcc dot gnu dot org  2006-05-16 15:34 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

* [Bug tree-optimization/22303] CCP does not handle STRING_CSTs
       [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
                   ` (7 preceding siblings ...)
  2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
@ 2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
  8 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-16 15:34 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #10 from rguenth at gcc dot gnu dot org  2006-05-16 15:34 -------
Subject: Bug 22303

Author: rguenth
Date: Tue May 16 15:34:12 2006
New Revision: 113826

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113826
Log:
2006-05-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/22303
        * tree-ssa-ccp.c (fold_const_aggregate_ref): Handle reads
        from STRING_CSTs.
        (evaluate_stmt): Fall back to fold_const_aggregate_ref, if
        ccp_fold did not simplify the statement.

        * gcc.dg/tree-ssa/ssa-ccp-13.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303


^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2006-05-16 15:34 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-07-05  3:11 [Bug tree-optimization/22303] New: CCP does not handle STRING_CSTs pinskia at gcc dot gnu dot org
2005-07-05  3:16 ` [Bug tree-optimization/22303] " pinskia at gcc dot gnu dot org
2005-07-05  3:19 ` pinskia at gcc dot gnu dot org
2005-07-05  3:34 ` hp at gcc dot gnu dot org
2005-07-07 13:42 ` pinskia at gcc dot gnu dot org
     [not found] <bug-22303-6528@http.gcc.gnu.org/bugzilla/>
2006-05-08  9:57 ` rguenth at gcc dot gnu dot org
2006-05-08 10:07 ` mueller at gcc dot gnu dot org
2006-05-08 10:07 ` mueller at gcc dot gnu dot org
2006-05-08 15:06 ` pinskia at gcc dot gnu dot org
2006-05-08 15:53 ` pinskia at gcc dot gnu dot org
2006-05-08 16:01 ` pinskia at gcc dot gnu dot org
2006-05-15 19:26 ` patchapp at dberlin dot org
2006-05-16 15:34 ` rguenth at gcc dot gnu dot org
2006-05-16 15:34 ` rguenth at gcc dot gnu dot org

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