[Bug ipa/84658] [7 Regression] -O3 -fmerge-all-constants causes incorrect for-each loop generation.

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84658

--- Comment #26 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Apr 24 15:17:00 2018
New Revision: 259597

URL: https://gcc.gnu.org/viewcvs?rev=259597&root=gcc&view=rev
Log:
Backport r258480

2018-04-24  Martin Liska  <mli...@suse.cz>

        Backport from mainline
        2018-03-13  Martin Liska  <mli...@suse.cz>

        PR ipa/84658.
        * (sem_item_optimizer::sem_item_optimizer): Initialize new
        vector.
        (sem_item_optimizer::~sem_item_optimizer): Release it.
        (sem_item_optimizer::merge_classes): Register variable aliases.
        (sem_item_optimizer::fixup_pt_set): New function.
        (sem_item_optimizer::fixup_points_to_sets): Likewise.
        * ipa-icf.h: Declare new variables and functions.
2018-04-24  Martin Liska  <mli...@suse.cz>

        Backport from mainline
        2018-03-13  Martin Liska  <mli...@suse.cz>

        PR ipa/84658.
        * g++.dg/ipa/pr84658.C: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/ipa/pr84658.C
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/ipa-icf.c
    branches/gcc-7-branch/gcc/ipa-icf.h
    branches/gcc-7-branch/gcc/testsuite/ChangeLog