[Bug ipa/81877] [7 Regression] Incorrect results with lto and -fipa-cp and -fipa-cp-clone

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81877

--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Dec 18 08:35:23 2017
New Revision: 255776

URL: https://gcc.gnu.org/viewcvs?rev=255776&root=gcc&view=rev
Log:
2017-12-18  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/81877
        * tree-ssa-loop-im.c (ref_indep_loop_p): Remove safelen parameters.
        (outermost_indep_loop): Adjust.
        (ref_indep_loop_p_1): Likewise.  Remove safelen handling again.
        (can_sm_ref_p): Adjust.

        * g++.dg/torture/pr81877.C: New testcase.
        * g++.dg/vect/pr70729.cc: XFAIL.
        * g++.dg/vect/pr70729-nest.cc: XFAIL.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr81877.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/vect/pr70729-nest.cc
    trunk/gcc/testsuite/g++.dg/vect/pr70729.cc
    trunk/gcc/tree-ssa-loop-im.c