[Bug tree-optimization/89710] [7/8/9 Regression] ICE in dyn_cast(gimple*) / should_duplicate_loop_header_p

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89710

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar 14 11:07:41 2019
New Revision: 269679

URL: https://gcc.gnu.org/viewcvs?rev=269679&root=gcc&view=rev
Log:
2019-03-14  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/89710
        * tree-ssa-loop-ch.c (should_duplicate_loop_header_p): Use
        safe_dyn_cast.

        * gcc.dg/torture/pr89710.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr89710.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ch.c