[Bug tree-optimization/84552] [6/7/8 Regression] Compile time hog w/ -O2 -floop-nest-optimize -fno-tree-copy-prop -fno-tree-fre -fno-tree-loop-ivcanon

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84552

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar  8 14:41:39 2018
New Revision: 258365

URL: https://gcc.gnu.org/viewcvs?rev=258365&root=gcc&view=rev
Log:
2018-03-08  Richard Biener  <rguent...@suse.de>

        PR middle-end/84552
        * tree-scalar-evolution.c: Include tree-into-ssa.h.
        (follow_copies_to_constant): Do not follow SSA names registered
        for update.

        * gcc.dg/graphite/pr84552.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr84552.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-scalar-evolution.c