[PATCH 3/3] Enable Intel MOVDIRI, MOVDIR64B instructions.

[Tsimbalist, Igor V]

Intel has disclosed a set of new instructions for Tremont processor.
The spec is
https://software.intel.com/en-us/intel-architecture-instruction-set-extensions-programming-reference

This patch enables Intel MOVDIRI, MOVDIR64B instructions.

gas/
	* config/tc-i386.c (cpu_arch): Add .movdir, .movdir64b.
	(cpu_noarch): Likewise.
	(process_suffix): Add check for register size.
	* doc/c-i386.texi: Document movdiri, movdir64b.
	* testsuite/gas/i386/i386.exp: Run MOVDIR{I,64B} tests.
	* testsuite/gas/i386/movdir-intel.d: New test.
	* testsuite/gas/i386/movdir.d: Likewise.
	* testsuite/gas/i386/movdir.s: Likewise.
	* testsuite/gas/i386/movdir64b-reg.s: Likewise.
	* testsuite/gas/i386/movdir64b-reg.l: Likewise.
	* testsuite/gas/i386/x86-64-movdir-intel.d: Likewise.
	* testsuite/gas/i386/x86-64-movdir.d: Likewise.
	* testsuite/gas/i386/x86-64-movdir.s: Likewise.
	* testsuite/gas/i386/x86-64-movdir64b-reg.s: Likewise.
	* testsuite/gas/i386/x86-64-movdir64b-reg.l: Likewise.

opcodes/
	* i386-dis.c (enum): Add PREFIX_0F38F8, PREFIX_0F38F9,
	MOD_0F38F8_PREFIX_2, MOD_0F38F9_PREFIX_0.
	(prefix_table): New instructions (see prefix above).
	(mod_table): New instructions (see prefix above).
	Add Gva macro and handling in OP_G.
	* i386-gen.c (cpu_flag_init): Add CPU_MOVDIRI_FLAGS,
	CPU_MOVDIR64B_FLAGS.
	(cpu_flags): Likewise.
	(opcode_modifiers): Add AddrPrefixOpReg.
	(i386_opcode_modifier): Likewise.
	* i386-opc.h (enum): Add CpuMOVDIRI, CpuMOVDIR64B.
	(i386_cpu_flags): Likewise.
	* i386-opc.tbl: Add movidir{i,64b}.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.

OK for trunk.

Igor
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