[Bug rtl-optimization/54455] [4.7/4.8 Regression] ICE: RTL check: expected elt 3 type 'B', have '0' (rtx barrier) in compute_bb_for_insn, at cfgrtl.c:418

[steven at gcc dot gnu.org]

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

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steven at gcc dot gnu.org

--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2012-09-02 14:58:24 UTC ---
Before thread_prologue_and_epilogue_insns:

basic block 3, loop depth 0
 pred:       2
L9:
   10 NOTE_INSN_BASIC_BLOCK
    11: ax=0x1
    12: dx=0x2
    13: jump {asm_operands;clobber fpsr;clobber flags;clobber [scratch];}
 succ:       EXIT

and after:

basic block 3, loop depth 0
 pred:       2
L9:
   10 NOTE_INSN_BASIC_BLOCK
    11: ax=0x1
    12: dx=0x2
   28 NOTE_INSN_EPILOGUE_BEG
    29: bp=[sp++]
      REG_CFA_DEF_CFA: sp+0x8
    30: jump simple_return
i  31: barrier
 succ:       EXIT