nvptx.md (nvptx_register_operand): Don't accept and then reject subregs.

nvptx.md (nvptx_register_operand): Don't accept and then reject subregs.

	* config/nvptx/nvptx.md (nvptx_register_operand): Don't accept and
	then reject subregs.
	(nvptx_reg_or_mem_operand): Likewise.
	(nvptx_nonmemory_operand): Likewise.
	(call_insn_operand): A regular predicate, check	SYMBOL_REF_FUNCTION_P.
	(call_insn, call_value_insn): Address is not SImode.
	* config/nvptx/nvptx.h (FIXED_REGISTERS): Make return reg fixed.
	(enum reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Remove
	RETURN_REG class.
	(REGNO_REG_CLASS): Alwaus ALL_REGS.
	(PROMOTE_MODE): QI and HI are the only smaller than SI int modes.
	(HARD_FRAME_POINTER_REGNUM): Delete.
	(REGISTER_NAMES): Move earlier.
	(struct nvptx_args): Remove 'off'.
	(INIT_CUMULATIVE_ARGS): Don't initialize 'off'.
	(ELIMINABLE_REGS): Remove HARD_FRAME_POINTER_REGNUM.
	* config/nvptx/nvptx.c (arg_promotion): Delete.
	(nvptx_expand_call): Remove check for funtype being an fntype.

From-SVN: r231659