[Bug tree-optimization/63380] [5 Regression] Wrong constant folding

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63380

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Oct  9 12:45:07 2014
New Revision: 216038

URL: https://gcc.gnu.org/viewcvs?rev=216038&root=gcc&view=rev
Log:
2014-10-09  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/63380
    * tree-ssa-tail-merge.c (stmt_local_def): Exclude stmts that
    may trap.

    * gcc.dg/torture/pr63380-1.c: New testcase.
    * gcc.dg/torture/pr63380-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr63380-1.c
    trunk/gcc/testsuite/gcc.dg/torture/pr63380-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c