[Bug target/81644] ICE in rtl_verify_bb_insn, BBRO pass duplicates BB that ends with flow control insn

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81644

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Wed Sep 13 16:21:52 2017
New Revision: 252260

URL: https://gcc.gnu.org/viewcvs?rev=252260&root=gcc&view=rev
Log:
        PR target/81644
        * config/i386/i386.md (unspecv): Add UNSPECV_UD2.
        (ud2): New insn pattern.
        * config/i386/i386.c (ix86_expand_epilogue):
        Generate ud2 instead of trap insn.

testsuite/ChangeLog:

        PR target/81644
        * gcc.target/i386/pr81644.c: New test.

Added:
    branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81644.c
Modified:
    branches/range-gen2/gcc/ChangeLog
    branches/range-gen2/gcc/config/i386/i386.c
    branches/range-gen2/gcc/config/i386/i386.md
    branches/range-gen2/gcc/testsuite/ChangeLog