[Bug tree-optimization/87349] [9 Regression] ICE: Segmentation fault (in useless_type_conversion_p or is_gimple_reg_type)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87349

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Sep 19 07:10:42 2018
New Revision: 264419

URL: https://gcc.gnu.org/viewcvs?rev=264419&root=gcc&view=rev
Log:
2018-09-19  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/87349
        PR tree-optimization/87342
        * tree-ssa-sccvn.c (do_rpo_vn): Iterate max_rpo computation.

        * gcc.dg/torture/pr87349-1.c: New testcase.
        * gcc.dg/torture/pr87349-2.c: Likewise.
        * gcc.dg/torture/pr87342.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr87342.c
    trunk/gcc/testsuite/gcc.dg/torture/pr87349-1.c
    trunk/gcc/testsuite/gcc.dg/torture/pr87349-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c