[Bug tree-optimization/83695] [8 Regression] ICE on valid code at -O3: Segmentation fault

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83695

--- Comment #6 from amker at gcc dot gnu.org ---
Author: amker
Date: Thu Jan 11 15:41:41 2018
New Revision: 256541

URL: https://gcc.gnu.org/viewcvs?rev=256541&root=gcc&view=rev
Log:
        PR tree-optimization/83695
        * gimple-loop-linterchange.cc
        (tree_loop_interchange::interchange_loops): Call scev_reset_htab to
        reset cached scev information after interchange.
        (pass_linterchange::execute): Remove call to scev_reset_htab.

        gcc/testsuite
        PR tree-optimization/83695
        * gcc.dg/tree-ssa/pr83695.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr83695.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-loop-interchange.cc
    trunk/gcc/testsuite/ChangeLog