[Bug tree-optimization/77879] [5 Regression] mpd gets miscompiled since r235622

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Jan 24 11:32:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77879

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan 24 11:30:44 2017
New Revision: 244864

URL: https://gcc.gnu.org/viewcvs?rev=244864&root=gcc&view=rev
Log:
2017-01-24  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2016-09-20  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77646
        * tree-ssa-sccvn.c (visit_reference_op_call): Always value-number
        a VDEF.

        * gcc.dg/torture/pr77646.c: New testcase.

        2016-11-05  David Edelsohn  <dje.gcc@gmail.com>
                Richard Biener  <rguenther@suse.de>

        PR bootstrap/78188
        PR c++/71848
        * ipa-comdats.c (pass_ipa_comdats::gate): Require HAVE_COMDAT_GROUP.

        * g++.dg/ipa/pr78188.C: New test.       

        2016-09-21  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77648
        * tree-ssa-structalias.c (process_constraint): Handle all DEREF
        with complex RHS.
        (make_transitive_closure_constraints): Adjust comment.
        (make_any_offset_constraints): New function.
        (handle_rhs_call): Make sure to first expand a pointer to all
        subfields before transitively closing it.
        (handle_const_call): Likewise.  Properly expand returned
        pointers as well.
        (handle_pure_call): Likewise.

        * gcc.dg/torture/pr77648-1.c: New testcase.
        * gcc.dg/torture/pr77648-2.c: Likewise.

        2016-10-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77879
        * tree-ssa-structalias.c (handle_const_call): Properly handle
        NRV return slots.
        (handle_pure_call): Likewise.

Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr78188.C
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr77646.c
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr77648-1.c
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr77648-2.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/ipa-comdats.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree-ssa-sccvn.c
    branches/gcc-5-branch/gcc/tree-ssa-structalias.c


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