rs6000.c (rs6000_init_hard_regno_mode_ok): Eliminate TARGET_UPPER_REGS_{DF,DI,SF...

rs6000.c (rs6000_init_hard_regno_mode_ok): Eliminate TARGET_UPPER_REGS_{DF,DI,SF} usage.

2017-07-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (rs6000_init_hard_regno_mode_ok):
	Eliminate TARGET_UPPER_REGS_{DF,DI,SF} usage.
	(rs6000_option_override_internal): Likewise.
	(rs6000_expand_vector_set): Likewise.
	* config/rs6000/rs6000.h (TARGET_UPPER_REGS_DF): Delete.
	(TARGET_UPPER_REGS_SF): Likewise.
	(TARGET_UPPER_REGS_DI): Likewise.
	(TARGET_VEXTRACTUB): Eliminate TARGET_UPPER_REGS_{DF,DI,SF}.
	(TARGET_DIRECT_MOVE_64BIT): Likewise.
	* config/rs6000/rs6000.md (ALTIVEC_DFORM): Likewise.
	(float<QHI:mode><FP_ISA3:mode>2_internal): Likewise.
	(Splitters for DI constants in Altivec registers): Likewise.
	* config/rs6000/vsx.md (vsx_set_<mode>_p9): Likewise.
	(vsx_set_v4sf_p9): Likewise.
	(vsx_set_v4sf_p9_zero): Likewise.
	(vsx_insert_extract_v4sf_p9): Likewise.
	(vsx_insert_extract_v4sf_p9_2): Likewise.

From-SVN: r250555