[Bug target/54902] [4.7 Regression], ICE (segfault) building on arm-linux-gnueabi

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54902

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> 2012-10-25 11:16:19 UTC ---
Author: rguenth
Date: Thu Oct 25 11:16:12 2012
New Revision: 192804

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192804
Log:
2012-10-25  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/54902
    * tree-ssa-pre.c (fini_eliminate): Return TODO.
    (do_pre): Adjust.
    (execute_fre): Likewise.
    * tree-ssa-tailmerge.c (tail_merge_optimize): Delete unreachable
    blocks before computing dominators.

    * g++.dg/torture/pr54902.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr54902.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c
    trunk/gcc/tree-ssa-tail-merge.c