[Bug tree-optimization/84841] [7 Regression] ICE: tree check: expected ssa_name, have real_cst in rewrite_expr_tree_parallel, at tree-ssa-reassoc.c:4624

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84841

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 22 20:46:37 2018
New Revision: 261927

URL: https://gcc.gnu.org/viewcvs?rev=261927&root=gcc&view=rev
Log:
        Backported from mainline
        2018-03-16  Jakub Jelinek  <ja...@redhat.com>

        PR tree-optimization/84841
        * tree-ssa-reassoc.c (INTEGER_CONST_TYPE): Change to 1 << 4 from
        1 << 3.
        (FLOAT_ONE_CONST_TYPE): Define.
        (constant_type): Return FLOAT_ONE_CONST_TYPE for -1.0 and 1.0.
        (sort_by_operand_rank): Put entries with higher constant_type last
        rather than first to match comments.

        * gcc.dg/pr84841.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr84841.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/tree-ssa-reassoc.c