[Bug tree-optimization/88964] [8 Regression] ICE in wide_int_to_tree_1, at tree.c:1561

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88964

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb  7 14:39:13 2019
New Revision: 268630

URL: https://gcc.gnu.org/viewcvs?rev=268630&root=gcc&view=rev
Log:
        Backported from mainline
        2019-01-23  Jakub Jelinek  <ja...@redhat.com>

        PR tree-optimization/88964
        * gimple-loop-interchange.cc (loop_cand::analyze_induction_var): Use
        build_zero_cst instead of build_int_cst.  Return false for loop
        invariants which honor signed zeros.

        * gfortran.dg/pr88964.f90: New test.

Added:
    branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88964.f90
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/gimple-loop-interchange.cc
    branches/gcc-8-branch/gcc/testsuite/ChangeLog