[Bug ipa/82801] [6 Regression] Internal compiler error with Eigen and __attribute__((always_inline, flatten))

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82801

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jun 25 17:02:47 2018
New Revision: 262046

URL: https://gcc.gnu.org/viewcvs?rev=262046&root=gcc&view=rev
Log:
        Backported from mainline
        2017-12-19  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/82801
        PR ipa/83346
        * ipa-inline.c (flatten_remove_node_hook): New function.
        (ipa_inline): Keep only nodes with flatten attribute at the end of
        the array in the order from ipa_reverse_postorder, only walk that
        portion of array for flattening, if there is more than one such
        node, temporarily register a removal hook and ignore removed nodes.

        * g++.dg/ipa/pr82801.C: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/ipa/pr82801.C
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/ipa-inline.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog