* Makefile.in (c-cppbuiltin.o): Depend on debug.h.
        * c-cppbuiltin.c (c_cpp_builtins): Define __GCC_HAVE_DWARF2_CFI_ASM.
        * doc/cpp.texi (__GCC_HAVE_DWARF2_CFI_ASM): Document it.
        * common.opt (fdwarf2-cfi-asm): New.
        * configure.ac (HAVE_GAS_CFI_DIRECTIVE): New.
        * config.in, configure: Rebuild.
        * dwarf2asm.c (dw2_asm_output_data_raw): New.
        (dw2_asm_output_data_uleb128_raw, dw2_asm_output_data_sleb128_raw): New.
        (dw2_force_const_mem): Externalize.
        * dwarf2asm.h: Update.
        * dwarf2out.c (dwarf2out_cfi_label): If flag_dwarf2_cfi_asm, don't
        generate a real label.
        (output_cfi_directive): New.
        (add_fde_cfi): If flag_dwarf2_cfi_asm, use it.
        (output_call_frame_info): Do nothing if flag_dwarf2_cfi_asm.
        (dwarf2out_begin_prologue): Emit .cfi_startproc, .cfi_personality,
        and .cfi_lsda.
        (dwarf2out_end_epilogue): Emit .cfi_endproc.
        (output_loc_operands_raw, output_loc_sequence_raw): New.
        (output_cfa_loc_raw): New.

From-SVN: r138733