[Bug tree-optimization/56415] Performance regression after fix for 56273

2013-02-21 Thread rguenth at gcc dot gnu.org 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56415



Richard Biener  changed:



   What|Removed |Added



 Status|UNCONFIRMED |ASSIGNED

   Last reconfirmed||2013-02-21

 AssignedTo|unassigned at gcc dot   |rguenth at gcc dot gnu.org

   |gnu.org |

 Ever Confirmed|0   |1



--- Comment #3 from Richard Biener  2013-02-21 
09:45:46 UTC ---

I will have a look.

[Bug tree-optimization/56415] Performance regression after fix for 56273

2013-02-21 Thread ysrumyan at gmail dot com 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56415



--- Comment #2 from Yuri Rumyantsev  2013-02-21 
09:11:21 UTC ---

This bug was introduced by the following fix:



r195940 is guilty:



Author: rguenth

Date: Mon Feb 11 13:33:19 2013

New Revision: 195940



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195940

Log:

2013-02-11 Richard Biener 

PR tree-optimization/56273

   * tree-vrp.c (simplify_cond_using_ranges): Disable for thefirst VRP run.

   (check_array_ref): Fix missing newline in dumps.(search_for_addr_array):

Likewise.

[Bug tree-optimization/56415] Performance regression after fix for 56273

2013-02-21 Thread ysrumyan at gmail dot com 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56415



--- Comment #1 from Yuri Rumyantsev  2013-02-21 
08:59:33 UTC ---

Created attachment 29515

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29515

testcase



Test must be compiled with "-O3 -funroll-loops" options.