amdgcn: generalize vector insn modes

amdgcn: generalize vector insn modes

Replace all relevant explicit uses of V64 vectors with an iterator (albeit
with only one entry).  This is prerequisite to adding extra vector lengths.

The changes are purely mechanical: comparing the mddump files from before
and after shows only white-space differences and the use of GET_MODE_NUNITS.

2020-03-31  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md (V_QI, V_HI, V_HF, V_SI, V_SF, V_DI, V_DF):
	New mode iterators.
	(vnsi, VnSI, vndi, VnDI): New mode attributes.
	(mov<mode>): Use <VnDI> in place of V64DI.
	(mov<mode>_exec): Likewise.
	(mov<mode>_sgprbase): Likewise.
	(reload_out<mode>): Likewise.
	(*vec_set<mode>_1): Use GET_MODE_NUNITS instead of constant 64.
	(gather_load<mode>v64si): Rename to ...
	(gather_load<mode><vnsi>): ... this, and use <VnSI> in place of V64SI,
	and <VnDI> in place of V64DI.
	(gather<mode>_insn_1offset<exec>): Use <VnDI> in place of V64DI.
	(gather<mode>_insn_1offset_ds<exec>): Use <VnSI> in place of V64SI.
	(gather<mode>_insn_2offsets<exec>): Use <VnSI> and <VnDI>.
	(scatter_store<mode>v64si): Rename to ...
	(scatter_store<mode><vnsi>): ... this, and use <VnSI> and <VnDI>.
	(scatter<mode>_expr<exec_scatter>): Use <VnSI> and <VnDI>.
	(scatter<mode>_insn_1offset<exec_scatter>): Likewise.
	(scatter<mode>_insn_1offset_ds<exec_scatter>): Likewise.
	(scatter<mode>_insn_2offsets<exec_scatter>): Likewise.
	(ds_bpermute<mode>): Use <VnSI>.
	(addv64si3_vcc<exec_vcc>): Rename to ...
	(add<mode>3_vcc<exec_vcc>): ... this, and use V_SI.
	(addv64si3_vcc_dup<exec_vcc>): Rename to ...
	(add<mode>3_vcc_dup<exec_vcc>): ... this, and use V_SI.
	(addcv64si3<exec_vcc>): Rename to ...
	(addc<mode>3<exec_vcc>): ... this, and use V_SI.
	(subv64si3_vcc<exec_vcc>): Rename to ...
	(sub<mode>3_vcc<exec_vcc>): ... this, and use V_SI.
	(subcv64si3<exec_vcc>): Rename to ...
	(subc<mode>3<exec_vcc>): ... this, and use V_SI.
	(addv64di3): Rename to ...
	(add<mode>3): ... this, and use V_DI.
	(addv64di3_exec): Rename to ...
	(add<mode>3_exec): ... this, and use V_DI.
	(subv64di3): Rename to ...
	(sub<mode>3): ... this, and use V_DI.
	(subv64di3_exec): Rename to ...
	(sub<mode>3_exec): ... this, and use V_DI.
	(addv64di3_zext): Rename to ...
	(add<mode>3_zext): ... this, and use V_DI and <VnSI>.
	(addv64di3_zext_exec): Rename to ...
	(add<mode>3_zext_exec): ... this, and use V_DI and <VnSI>.
	(addv64di3_zext_dup): Rename to ...
	(add<mode>3_zext_dup): ... this, and use V_DI and <VnSI>.
	(addv64di3_zext_dup_exec): Rename to ...
	(add<mode>3_zext_dup_exec): ... this, and use V_DI and <VnSI>.
	(addv64di3_zext_dup2): Rename to ...
	(add<mode>3_zext_dup2): ... this, and use V_DI and <VnSI>.
	(addv64di3_zext_dup2_exec): Rename to ...
	(add<mode>3_zext_dup2_exec): ... this, and use V_DI and <VnSI>.
	(addv64di3_sext_dup2): Rename to ...
	(add<mode>3_sext_dup2): ... this, and use V_DI and <VnSI>.
	(addv64di3_sext_dup2_exec): Rename to ...
	(add<mode>3_sext_dup2_exec): ... this, and use V_DI and <VnSI>.
	(<su>mulv64si3_highpart<exec>): Rename to ...
	(<su>mul<mode>3_highpart<exec>): ... this and use V_SI and <VnDI>.
	(mulv64di3): Rename to ...
	(mul<mode>3): ... this, and use V_DI and <VnSI>.
	(mulv64di3_exec): Rename to ...
	(mul<mode>3_exec): ... this, and use V_DI and <VnSI>.
	(mulv64di3_zext): Rename to ...
	(mul<mode>3_zext): ... this, and use V_DI and <VnSI>.
	(mulv64di3_zext_exec): Rename to ...
	(mul<mode>3_zext_exec): ... this, and use V_DI and <VnSI>.
	(mulv64di3_zext_dup2): Rename to ...
	(mul<mode>3_zext_dup2): ... this, and use V_DI and <VnSI>.
	(mulv64di3_zext_dup2_exec): Rename to ...
	(mul<mode>3_zext_dup2_exec): ... this, and use V_DI and <VnSI>.
	(<expander>v64di3): Rename to ...
	(<expander><mode>3): ... this, and use V_DI and <VnSI>.
	(<expander>v64di3_exec): Rename to ...
	(<expander><mode>3_exec): ... this, and use V_DI and <VnSI>.
	(<expander>v64si3<exec>): Rename to ...
	(<expander><mode>3<exec>): ... this, and use V_SI and <VnSI>.
	(v<expander>v64si3<exec>): Rename to ...
	(v<expander><mode>3<exec>): ... this, and use V_SI and <VnSI>.
	(<expander>v64si3<exec>): Rename to ...
	(<expander><vnsi>3<exec>): ... this, and use V_SI.
	(subv64df3<exec>): Rename to ...
	(sub<mode>3<exec>): ... this, and use V_DF.
	(truncv64di<mode>2): Rename to ...
	(trunc<vndi><mode>2): ... this, and use <VnDI>.
	(truncv64di<mode>2_exec): Rename to ...
	(trunc<vndi><mode>2_exec): ... this, and use <VnDI>.
	(<convop><mode>v64di2): Rename to ...
	(<convop><mode><vndi>2): ... this, and use <VnDI>.
	(<convop><mode>v64di2_exec): Rename to ...
	(<convop><mode><vndi>2_exec): ... this, and use <VnDI>.
	(vec_cmp<u>v64qidi): Rename to ...
	(vec_cmp<u><mode>di): ... this, and use <VnSI>.
	(vec_cmp<u>v64qidi_exec): Rename to ...
	(vec_cmp<u><mode>di_exec): ... this, and use <VnSI>.
	(vcond_mask_<mode>di): Use <VnDI>.
	(maskload<mode>di): Likewise.
	(maskstore<mode>di): Likewise.
	(mask_gather_load<mode>v64si): Rename to ...
	(mask_gather_load<mode><vnsi>): ... this, and use <VnSI> and <VnDI>.
	(mask_scatter_store<mode>v64si): Rename to ...
	(mask_scatter_store<mode><vnsi>): ... this, and use <VnSI> and <VnDI>.
	(*<reduc_op>_dpp_shr_v64di): Rename to ...
	(*<reduc_op>_dpp_shr_<mode>): ... this, and use V_DI and <VnSI>.
	(*plus_carry_in_dpp_shr_v64si): Rename to ...
	(*plus_carry_in_dpp_shr_<mode>): ... this, and use V_SI.
	(*plus_carry_dpp_shr_v64di): Rename to ...
	(*plus_carry_dpp_shr_<mode>): ... this, and use V_DI and <VnSI>.
	(vec_seriesv64si): Rename to ...
	(vec_series<mode>): ... this, and use V_SI.
	(vec_seriesv64di): Rename to ...
	(vec_series<mode>): ... this, and use V_DI.