[Bug tree-optimization/46177] [4.5/4.6 Regression] ICE: in prop_phis, at tree-loop-distribution.c:327 with -fno-tree-copy-prop -ftree-loop-distribution

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46177

--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-09 
15:01:51 UTC ---
Author: rguenth
Date: Tue Nov  9 15:01:41 2010
New Revision: 166492

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166492
Log:
2010-11-09  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/46177
    * tree-loop-distribution.c (prop_phis): Remove.
    (generate_builtin): Re-use the old loop exit edge to avoid
    needing to update PHI nodes.

    * gcc.dg/pr46177-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr46177-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-loop-distribution.c