[Bug tree-optimization/67859] [6 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67859

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Oct  6 12:34:15 2015
New Revision: 228519

URL: https://gcc.gnu.org/viewcvs?rev=228519&root=gcc&view=rev
Log:
2015-10-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/67859
        * tree-ssa-pre.c (create_expression_by_pieces): Properly
        discard not inserted stmts.

        * gcc.dg/torture/pr67859.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr67859.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c