[Bug tree-optimization/84739] [6/7 Regression] ICE in get_value_for_expr, at tree-ssa-ccp.c:649

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84739

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 22 20:31:10 2018
New Revision: 261914

URL: https://gcc.gnu.org/viewcvs?rev=261914&root=gcc&view=rev
Log:
        Backported from mainline
        2018-03-08  Jakub Jelinek  <ja...@redhat.com>

        PR tree-optimization/84739
        * tree-tailcall.c (find_tail_calls): Check call arguments against
        DECL_ARGUMENTS (current_function_decl) rather than
        DECL_ARGUMENTS (func) when checking for tail recursion.

        * gcc.dg/pr84739.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr84739.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/tree-tailcall.c