[Bug tree-optimization/49642] constant part of a macro not optimized away as expected due to splitter

[wschmidt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49642

--- Comment #9 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2012-01-11 
22:37:33 UTC ---
Author: wschmidt
Date: Wed Jan 11 22:37:26 2012
New Revision: 183110

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183110
Log:
gcc:

2012-01-11  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

    PR tree-optimization/49642
    * ipa-split.c (forbidden_dominators): New variable.
    (check_forbidden_calls): New function.
    (dominated_by_forbidden): Likewise.
    (consider_split): Check for forbidden dominators.
    (execute_split_functions): Initialize and free forbidden
    dominators info; call check_forbidden_calls.

gcc/testsuite:

2012-01-11  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

    PR tree-optimization/49642
    * gcc.dg/tree-ssa/pr49642.c: New test.


Added:
    branches/ibm/gcc-4_6-branch/gcc/testsuite/gcc.dg/tree-ssa/pr49642.c
Modified:
    branches/ibm/gcc-4_6-branch/gcc/ChangeLog.ibm
    branches/ibm/gcc-4_6-branch/gcc/ipa-split.c
    branches/ibm/gcc-4_6-branch/gcc/testsuite/ChangeLog.ibm