target.def (output_ident): New hook.

target.def (output_ident): New hook.

gcc/
	* target.def (output_ident): New hook.
	* targhooks.h (default_asm_output_ident_directive): Add prototype.
	* varasm.c (assemble_asm): Only prefix a tab if the string does not
	already start with one.
	(default_asm_output_ident_directive): New function to emit
	.ident as a top-level asm node while parsing, or directly to
	asm_out_file after parsing.
	* toplev.c (compile_file): Print a GCC .ident with
	targetm.asm_out.output_ident.
	* doc/tm.texi.in (ASM_OUTPUT_IDENT): Remove documentation for macro.
	(TARGET_ASM_OUTPUT_IDENT): Add @hook for this.
	* doc/tm.texi: Update.

	* config/elfos.h (ASM_OUTPUT_IDENT, IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/i386/djgpp.h (IDENT_ASM_OP): Remove.
	* config/i386/gas.h (ASM_OUTPUT_IDENT): Remove.
	* config/arm/aout.h (ASM_OUTPUT_IDENT): Remove.
	* config/sparc/sparc.h (IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/picochip/picochip.h (IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.

	* config/cris/cris-protos.h (cris_asm_output_ident): Add prototype.
	* config/cris/cris.c (cris_asm_output_ident): New function.
	* config/cris/cris.h (ASM_OUTPUT_IDENT, IDENT_ASM_OP): Remove.

	* config/microblaze/microblaze-protos.h (microblaze_asm_output_ident):
	Add prototype.
	* config/microblaze/microblaze.c: Include cgraph.h for add_asm_node.
	(microblaze_asm_output_ident): Rewrite to work similar to
	default_asm_output_ident_directive for front-end .idents.
	* config/microblaze/microblaze.h (ASM_OUTPUT_IDENT): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.

	* config/mips/mips.h (ASM_OUTPUT_IDENT): Remove.
	* config/mips/sde.h (IDENT_ASM_OP, ASM_OUTPUT_IDENT): Remove.

	* config/rx/rx.c: Include cgraph.h for add_asm_node.
	(rx_asm_output_ident): New function, similar to
	default_asm_output_ident_directive, but handle AS100 syntax also, so
	that #ident also works for rx in AS100 syntax.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/rx/rx.h (IDENT_ASM_OP): Remove.

	* Makefile.in: Fix dependencies for c-family/c-lex.o.

c-family/
	* c-lex.c: Do not include output.h.
	(cb_ident): Try to put out .ident with targetm.asm_out.output_ident.
	Remove uses of ASM_OUTPUT_IDENT.

ada/
	* gcc-interface/trans.c: Include target.h.
	(gigi): Try to put out .ident with targetm.asm_out.output_ident.
	Remove uses of ASM_OUTPUT_IDENT.
	* gcc-interface/Make-lang.in: Fix dependencies.

From-SVN: r188791