* target.h (struct asm_out):Add declare_constant_name field.

	* target.h (struct asm_out):Add declare_constant_name field.
	* target-def.h (TARGET_ASM_DECLARE_CONSTANT_NAME): Define.
	(TARGET_INITIALIZER): Use TARGET_ASM_DECLARE_CONSTANT_NAME.
	* output.h (default_asm_declare_constant_name): Declare.
	(assemble_label): Update prototype.
	* varasm.c (assemble_constant_contents): Use
	targetm.asm_out.declare_constant_name target hook.
	(assemble_label): Add 'file' argument.
	(default_asm_declare_constant_name): New function.
	* system.h (ASM_DECLARE_CONSTANT_NAME): Poison.
	* doc/tm.texi (ASM_DECLARE_CONSTANT_NAME): Remove.
	(TARGET_ASM_DECLARE_CONSTANT_NAME): Document it.

	* config/darwin-protos.h (darwin_asm_declare_constant_name): Declare.
	* config/darwin.c (darwin_asm_declare_constant_name): New function.
	(machopic_output_indirection): Update assemble_label argument list.
	* config/darwin.h (ASM_DECLARE_CONSTANT_NAME): Remove.
	(TARGET_ASM_DECLARE_CONSTANT_NAME): Define.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160811 138bc75d-0d04-0410-961f-82ee72b054a4