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Subject: [Bug debug/45865] [4.6 regression] Failed to build 403.gcc in SPEC CPU 2006
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45865

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-10 00:48:54 UTC ---
(note 139 66 113 NOTE_INSN_EPILOGUE_BEG)

(insn 113 139 114 (set (reg:SI 3 bx)
        (mem/c:SI (plus:SI (reg/f:SI 7 sp)
                (const_int 4 [0x4])) [6 S4 A8])) y.i:54 63 {*movsi_internal}
     (nil))

dwarf2out_cfi_begin_epilogue failed to handle:

(code_label 130 27 128 13 "" [1 uses])

(note 128 130 115 [bb 6] NOTE_INSN_BASIC_BLOCK)

(insn/f:TI 115 128 67 (parallel [
            (set (reg/f:SI 7 sp)
                (plus:SI (reg/f:SI 7 sp)
                    (const_int 12 [0xc])))
            (clobber (reg:CC 17 flags))
            (clobber (mem:BLK (scratch) [0 A8]))
        ]) y.i:54 868 {pro_epilogue_adjust_stack_si_add}
     (expr_list:REG_UNUSED (reg:CC 17 flags)
        (expr_list:REG_CFA_ADJUST_CFA (set (reg/f:SI 7 sp)
                (plus:SI (reg/f:SI 7 sp)
                    (const_int 12 [0xc])))
            (expr_list:REG_CFA_RESTORE (reg:SI 4 si)
                (expr_list:REG_CFA_RESTORE (reg:SI 3 bx)
                    (nil))))))

(call_insn/j:TI 67 115 68 (set (reg:SI 0 ax)
        (call (mem:QI (symbol_ref:SI ("reverse_condition") [flags 0x41] 
<function_decl 0x7ffff18bb100 reverse_condition>) [0 S1 A8])
            (const_int 4 [0x4]))) y.i:52 881 {*call_value_0}
     (nil)
    (nil))

(barrier 68 67 39)
...
(insn:TI 114 113 142 (set (reg:SI 4 si)
        (mem/c:SI (plus:SI (reg/f:SI 7 sp)
                (const_int 8 [0x8])) [6 S4 A8])) y.i:54 63 {*movsi_internal}
     (nil))

(jump_insn 142 114 143 (set (pc)
        (label_ref 130)) 605 {jump}
     (nil)
 -> 130)

(barrier 143 142 70)

(code_label 70 143 71 7 "" [3 uses])

(note 71 70 133 [bb 13] NOTE_INSN_BASIC_BLOCK)

(insn:TI 133 71 140 (parallel [
            (set (reg/i:SI 0 ax)
                (const_int 0 [0]))
            (clobber (reg:CC 17 flags))
        ]) y.i:54 54 {*movsi_xor}
     (expr_list:REG_UNUSED (reg:CC 17 flags)
        (nil)))

(note 140 133 107 NOTE_INSN_EPILOGUE_BEG)