[Bug middle-end/79499] ICE in rtl_verify_bb_insns, at cfgrtl.c:2661

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79499

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Aug  2 07:13:25 2017
New Revision: 250814

URL: https://gcc.gnu.org/viewcvs?rev=250814&root=gcc&view=rev
Log:
        PR middle-end/79499
        * function.c (thread_prologue_and_epilogue_insns): Determine blocks
        for find_many_sub_basic_blocks bitmap by looking up BLOCK_FOR_INSN
        of first NONDEBUG_INSN_P in each of the split_prologue_seq and
        prologue_seq sequences - if any.

        * gcc.dg/pr79499.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr79499.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/function.c
    trunk/gcc/testsuite/ChangeLog