[Bug tree-optimization/82381] [8 Regression] internal compiler error: qsort checking failed

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82381

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Oct  3 11:24:39 2017
New Revision: 253379

URL: https://gcc.gnu.org/viewcvs?rev=253379&root=gcc&view=rev
Log:
        PR tree-optimization/82381
        * tree-ssa-reassoc.c (sort_by_operand_rank): Don't check
        stmt_to_insert nor wheather SSA_NAMEs are default defs.
        Return 1 or -1 if one of bba and bbb is NULL. If bb_rank is equal,
        fallthrough into reassoc_stmt_dominates_stmt_p.

        * gcc.c-torture/compile/pr82381.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr82381.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c