* config/nvptx/nvptx-protos.h (nvptx_output_mov_insn): Declare.
	(nvptx_underlying_object_mode): Delete.
	* config/nvptx/nvptx.c (nvptx_underlying_object_mode): Delete.
	(output_reg): New.
	(nvptx_declare_function_name): Use output_reg.  Remove punning
	buffer.
	(nvptx_output_mov_insn): New.
	(nvptx_print_operand): Separate SUBREG handling, remove 'f' case,
	Use output_reg. Merge 't' and 'u' handling.
	* config/nvptx/nvptx.h (NVPTX_PUNNING_BUFFER_REGNUM): Delete.
	(struct machine_function): Remvoe punning_buffer_size.
	(REGISTER_NAMES): Remove %punbuffer.
	* config/nvptx/nvptx.md (UNSPEC_CPLX_LOWPART,
	UNSPEC_CPLX_HIGHPART): Delete.
	(*mov<mode>_insn [QHSDIM): Remove unnecessary constraints, use
	nvptx_output_mov_insn.
	(*mov<mode>_insn [SDFM): Reorder constraints to match integer
	moc.  Use nvptx_output_mov_insn.
	(highpartscsf2,  set_highpartscsf2, lowpartscsf2,
	set_lowpartscsf2): Delete.
	(mov<mode> [SDCM]): Delete.

From-SVN: r231180