[Bug rtl-optimization/46755] ICE: in calc_dfs_tree, at dominance.c:395 with -O

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46755

--- Comment #5 from Steven Bosscher <steven at gcc dot gnu.org> 2010-12-21 
14:55:43 UTC ---
Author: steven
Date: Tue Dec 21 14:55:41 2010
New Revision: 168118

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168118
Log:
gcc/
    PR rtl-optimization/46755
    * ira.c (ira): If some dead edges were removed, find and delete
    any blocks that might have become unreachable.

testsuite/
    PR rtl-optimization/46755
    * gfortran.dg/pr46755.f: New test

Added:
    trunk/gcc/testsuite/gfortran.dg/pr46755.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira.c
    trunk/gcc/testsuite/ChangeLog