[Bug tree-optimization/63748] [4.9/5 Regression] wrong may be used uninitialized warning (abnormal edges)

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63748

--- Comment #7 from ppalka at gcc dot gnu.org ---
Author: ppalka
Date: Mon Nov 10 20:43:40 2014
New Revision: 217317

URL: https://gcc.gnu.org/viewcvs?rev=217317&root=gcc&view=rev
Log:
2014-11-10  Patrick Palka  <ppa...@gcc.gnu.org>

gcc/
    PR middle-end/63748
    * tree-ssa-propagate.c (may_propagate_copy): Allow propagating
    SSA copies whose source and destination names both occur in
    abnormal PHIs.

gcc/testsuite/
    PR middle-end/63748
    * gcc.dg/pr63748.c: New testcase.


Added:
    trunk/gcc/testsuite/gcc.dg/pr63748.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-propagate.c