[Bug rtl-optimization/54455] [4.7 Regression] ICE: RTL check: expected elt 3 type 'B', have '0' (rtx barrier) in compute_bb_for_insn, at cfgrtl.c:418

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54455

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-09-07 
09:35:33 UTC ---
Author: jakub
Date: Fri Sep  7 09:35:21 2012
New Revision: 191060

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191060
Log:
2012-09-07  Jakub Jelinek  <ja...@redhat.com>

    Backported from mainline
    2012-09-06  Jakub Jelinek  <ja...@redhat.com>

    PR rtl-optimization/54455
    * sel-sched-ir.c (maybe_tidy_empty_bb): Give up if previous fallthru
    bb ends up with asm goto referencing bb's label.

    * gcc.dg/54455.c: New test.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/54455.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/sel-sched-ir.c
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog