re PR target/50751 (SH Target: Displacement addressing does not work for QImode and...

re PR target/50751 (SH Target: Displacement addressing does not work for QImode and HImode)

	PR target/50751
	* config/sh/sh.h (CONST_OK_FOR_K04, CONST_OK_FOR_K12, DISP_ADDR_P,
	DISP_ADDR_OFFSET): New macros.
	* config/sh/sh.c (sh_address_cost): Add SH2A special case.
	(sh_legitimate_index_p): Allow QImode displacements for non-SH2A.
	(sh_legitimize_address): Add QImode displacement handling.
	(sh_cannot_change_mode_class): Disallow GENERAL_REGS for SFmode
	vector subregs.
	(sh_secondary_reload): Add QImode displacement handling.
	* config/sh/predicates.md (movsrc_no_disp_mem_operand): New predicate.
	* config/sh/constraints.md (K04, Snd, Sdd): New constraints.
	* config/sh/sh.md (extendqisi2): Remove constraints from expander.
	(*extendqisi2_compact): Rename to *extendqisi2_compact_reg, restrict
	to register operands only.
	(*extendqisi2_compact_mem_disp, *extendqisi2_compact_snd): New insns.
	(extendqihi2): Change insn to expander.
	(*extendqihi2_compact_reg): New insn.
	(movqi_i, movqi): Replace with ...
	(movqi, *movqi_reg_reg, *movqi_store_mem_disp12,
	*movqi_load_mem_disp, *movqi_load_mem_disp): ... these.
	Add new peepholes for QImode displacement addressing.

From-SVN: r185534