[Bug tree-optimization/34172] Missed store ccp optimization

2008-03-14 Thread rguenth at gcc dot gnu dot org 


--- Comment #4 from rguenth at gcc dot gnu dot org  2008-03-14 17:25 ---
Fixed.


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||FIXED
   Target Milestone|--- |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34172

[Bug tree-optimization/34172] Missed store ccp optimization

2008-03-14 Thread rguenth at gcc dot gnu dot org 


--- Comment #3 from rguenth at gcc dot gnu dot org  2008-03-14 17:06 ---
Subject: Bug 34172

Author: rguenth
Date: Fri Mar 14 17:05:48 2008
New Revision: 133222

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133222
Log:
2008-03-14  Richard Guenther  <[EMAIL PROTECTED]>

PR tree-optimization/34172
* tree-flow.h (refs_may_alias_p): Declare.
(get_single_def_stmt): Likewise.
(get_single_def_stmt_from_phi): Likewise.
(get_single_def_stmt_with_phi): Likewise.
* tree-dfa.c (refs_may_alias_p): New function.
(get_single_def_stmt): Likewise.
(get_single_def_stmt_from_phi): Likewise.
(get_single_def_stmt_with_phi): Likewise.
* tree-ssa-sccvn.c (get_def_ref_stmt_vuses): New function.
(vn_reference_lookup_1): New helper function.
(vn_reference_lookup): Walk the virtual use-def chain to
continue searching for a match if the def does not alias the
reference we are looking for.

* gcc.dg/tree-ssa/ssa-fre-11.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-12.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-13.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-14.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-15.c: Likewise.
* gcc.dg/tree-ssa/20031106-4.c: Remove XFAIL.

Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-11.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-12.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-15.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/20031106-4.c
trunk/gcc/tree-dfa.c
trunk/gcc/tree-flow.h
trunk/gcc/tree-ssa-sccvn.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34172

[Bug tree-optimization/34172] Missed store ccp optimization

2007-11-30 Thread rguenth at gcc dot gnu dot org 


--- Comment #2 from rguenth at gcc dot gnu dot org  2007-11-30 10:25 ---
Mine.  I have a patch.


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
   |dot org |org
 Status|NEW |ASSIGNED
   Last reconfirmed|2007-11-21 12:04:28 |2007-11-30 10:25:34
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34172

[Bug tree-optimization/34172] Missed store ccp optimization

2007-11-21 Thread rguenth at gcc dot gnu dot org 


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

   Severity|normal  |enhancement
   Keywords||missed-optimization


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34172

[Bug tree-optimization/34172] Missed store ccp optimization

2007-11-21 Thread rguenth at gcc dot gnu dot org 


--- Comment #1 from rguenth at gcc dot gnu dot org  2007-11-21 12:04 ---
Note that only store _copyprop_ was removed for now.  But yes, store ccp
removal
is on the plate.  Note that this and similar bugs should be fixed by extending
value-numbering to disambiguate memory accesses itself and not only relying on
virtual operands.

Confirmed.


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||rguenth at gcc dot gnu dot
   ||org
 Status|UNCONFIRMED |NEW
 Ever Confirmed|0   |1
   Last reconfirmed|-00-00 00:00:00 |2007-11-21 12:04:28
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34172