[Bug rtl-optimization/54127] [4.7 Regression] ICE in maybe_record_trace_start with asm goto, --target=powerpc-unknown-linux-gnu

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54127

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-01 13:57:51 UTC ---
Author: jakub
Date: Fri Feb  1 13:57:46 2013
New Revision: 195648

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195648
Log:
    Backported from mainline
    2012-11-13  Jakub Jelinek  <jakub@redhat.com>

    PR rtl-optimization/54127
    * cfgrtl.c (force_nonfallthru_and_redirect): When redirecting
    asm goto labels from BB_HEAD (e->dest) to target bb, decrement
    LABEL_NUSES of BB_HEAD (e->dest) and increment LABEL_NUSES of
    BB_HEAD (target) appropriately and adjust JUMP_LABEL and/or
    REG_LABEL_TARGET and REG_LABEL_OPERAND.

    * gcc.dg/torture/pr54127.c: New test.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr54127.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/cfgrtl.c
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog