[PATCH][GAS][8/8] aarch64: [SME] SVE2 instructions added to support SME

[Przemyslaw Wirkus]

Hi,

This patch is adding new SVE2 instructions added to support SME extension.
The following SVE2 instructions are added by the SME architecture:
* PSEL,
* REVD, SCLAMP and UCLAMP.

OK for master?

gas/ChangeLog:

	* config/tc-aarch64.c (parse_sme_pred_reg_with_index):
	New parser.
	(parse_operands): New parser.
	* testsuite/gas/aarch64/sme-9-illegal.d: New test.
	* testsuite/gas/aarch64/sme-9-illegal.l: New test.
	* testsuite/gas/aarch64/sme-9-illegal.s: New test.
	* testsuite/gas/aarch64/sme-9.d: New test.
	* testsuite/gas/aarch64/sme-9.s: New test.

include/ChangeLog:

	* opcode/aarch64.h (enum aarch64_opnd): New operand
	AARCH64_OPND_SME_PnT_Wm_imm.

opcodes/ChangeLog:

	* aarch64-asm.c (aarch64_ins_sme_pred_reg_with_index):
	New inserter.
	* aarch64-dis.c (aarch64_ext_sme_pred_reg_with_index):
	New extractor.
	* aarch64-opc.c (aarch64_print_operand): Printout of
	OPND_SME_PnT_Wm_imm.
	* aarch64-opc.h (enum aarch64_field_kind): New bitfields
	FLD_SME_Rm, FLD_SME_i1, FLD_SME_tszh, FLD_SME_tszl.
	* aarch64-tbl.h (OP_SVE_NN_BHSD): New qualifier.
	(OP_SVE_QMQ): New qualifier.
	(struct aarch64_opcode): New instructions PSEL, REVD,
	SCLAMP and UCLAMP.
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