[Bug middle-end/52691] [4.7/4.8 Regression] va_start to builtin_next_arg optimization lost

2012-03-28 Thread jakub at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52691

Jakub Jelinek  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 CC||jakub at gcc dot gnu.org
 Resolution||FIXED

--- Comment #4 from Jakub Jelinek  2012-03-28 
14:58:12 UTC ---
Fixed.

[Bug middle-end/52691] [4.7/4.8 Regression] va_start to builtin_next_arg optimization lost

2012-03-28 Thread jakub at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52691

--- Comment #3 from Jakub Jelinek  2012-03-28 
14:49:40 UTC ---
Author: jakub
Date: Wed Mar 28 14:49:26 2012
New Revision: 185918

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185918
Log:
PR middle-end/52691
* tree-ssa-ccp.c (optimize_stdarg_builtin): Optimize
__builtin_va_start to __builtin_next_arg if the latter is
builtin_decl_explicit_p rather than when it is not.

* gcc.dg/pr52691.c: New test.

Added:
branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/pr52691.c
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
branches/gcc-4_7-branch/gcc/tree-ssa-ccp.c

[Bug middle-end/52691] [4.7/4.8 Regression] va_start to builtin_next_arg optimization lost

2012-03-28 Thread jakub at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52691

--- Comment #2 from Jakub Jelinek  2012-03-28 
14:47:59 UTC ---
Author: jakub
Date: Wed Mar 28 14:47:45 2012
New Revision: 185917

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185917
Log:
PR middle-end/52691
* tree-ssa-ccp.c (optimize_stdarg_builtin): Optimize
__builtin_va_start to __builtin_next_arg if the latter is
builtin_decl_explicit_p rather than when it is not.

* gcc.dg/pr52691.c: New test.

Added:
trunk/gcc/testsuite/gcc.dg/pr52691.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-ccp.c

[Bug middle-end/52691] [4.7/4.8 Regression] va_start to builtin_next_arg optimization lost

2012-03-26 Thread rguenth at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52691

Richard Guenther  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
Version|tree-ssa|4.7.0
   Last reconfirmed||2012-03-26
  Component|c   |middle-end
 CC||meissner at gcc dot gnu.org
 Ever Confirmed|0   |1
Summary|va_start to |[4.7/4.8 Regression]
   |builtin_next_arg|va_start to
   |optimization lost   |builtin_next_arg
   ||optimization lost
   Target Milestone|--- |4.7.1

--- Comment #1 from Richard Guenther  2012-03-26 
08:23:05 UTC ---
Confirmed.  Michael, can you please fix trunk and the 4.7 branch?  Thx.