Enable Intel CLDEMOTE instruction.

gas/
	* config/tc-i386.c (cpu_arch): Add .cldemote.
	* doc/c-i386.texi: Document cldemote/.cldemote.
	* testsuite/gas/i386/cldemote-intel.d: New.
	* testsuite/gas/i386/cldemote.d: Likewise.
	* testsuite/gas/i386/cldemote.s: Likewise.
	* testsuite/gas/i386/i386.exp: Run new tests.
	* testsuite/gas/i386/x86-64-cldemote-intel.d: New.
	* testsuite/gas/i386/x86-64-cldemote.d: Likewise.
	* testsuite/gas/i386/x86-64-cldemote.s: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-nops.d: Remove 0x0f1c
	NOP encoding that maps to cldemote.
	* testsuite/gas/i386/nops.d: Likewise.
	* testsuite/gas/i386/nops.s: Likewise.
	* testsuite/gas/i386/x86-64-nops.d: Likewise.
	* testsuite/gas/i386/x86-64-nops.s: Likewise.

opcode/
	* i386-dis.c: Add REG_0F1C_MOD_0, MOD_0F1C_PREFIX_0,
	PREFIX_0F1C.
	* i386-gen.c (cpu_flag_init): Add CPU_CLDEMOTE_FLAGS,
	(cpu_flags): Add CpuCLDEMOTE.
	* i386-init.h: Regenerate.
	* i386-opc.h (enum): Add CpuCLDEMOTE,
	(i386_cpu_flags): Add cpucldemote.
	* i386-opc.tbl: Add cldemote.
	* i386-tbl.h: Regenerate.

opcodes/ChangeLog

@@ -1,3 +1,15 @@
+2018-04-17  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>
+
+	* i386-dis.c: Add REG_0F1C_MOD_0, MOD_0F1C_PREFIX_0,
+	PREFIX_0F1C.
+	* i386-gen.c (cpu_flag_init): Add CPU_CLDEMOTE_FLAGS,
+	(cpu_flags): Add CpuCLDEMOTE.
+	* i386-init.h: Regenerate.
+	* i386-opc.h (enum): Add CpuCLDEMOTE,
+	(i386_cpu_flags): Add cpucldemote.
+	* i386-opc.tbl: Add cldemote.
+	* i386-tbl.h: Regenerate.
+
 2018-04-16  Alan Modra  <amodra@gmail.com>
 
 	* Makefile.am: Remove sh5 and sh64 support.

opcodes/i386-dis.c

@@ -738,6 +738,7 @@ enum
   REG_0F01,
   REG_0F0D,
   REG_0F18,
+  REG_0F1C_MOD_0,
   REG_0F1E_MOD_3,
   REG_0F71,
   REG_0F72,
@@ -792,6 +793,7 @@ enum
   MOD_0F1A_PREFIX_0,
   MOD_0F1B_PREFIX_0,
   MOD_0F1B_PREFIX_1,
+  MOD_0F1C_PREFIX_0,
   MOD_0F1E_PREFIX_1,
   MOD_0F24,
   MOD_0F26,
@@ -970,6 +972,7 @@ enum
   PREFIX_0F16,
   PREFIX_0F1A,
   PREFIX_0F1B,
+  PREFIX_0F1C,
   PREFIX_0F1E,
   PREFIX_0F2A,
   PREFIX_0F2B,
@@ -2898,7 +2901,7 @@ static const struct dis386 dis386_twobyte[] = {
   { "nopQ",		{ Ev }, 0 },
   { PREFIX_TABLE (PREFIX_0F1A) },
   { PREFIX_TABLE (PREFIX_0F1B) },
-  { "nopQ",		{ Ev }, 0 },
+  { PREFIX_TABLE (PREFIX_0F1C) },
   { "nopQ",		{ Ev }, 0 },
   { PREFIX_TABLE (PREFIX_0F1E) },
   { "nopQ",		{ Ev }, 0 },
@@ -3650,6 +3653,17 @@ static const struct dis386 reg_table[][8] = {
     { MOD_TABLE (MOD_0F18_REG_6) },
     { MOD_TABLE (MOD_0F18_REG_7) },
   },
+  /* REG_0F1C_MOD_0 */
+  {
+    { "cldemote",	{ Mb }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+    { "nopQ",		{ Ev }, 0 },
+  },
   /* REG_0F1E_MOD_3 */
   {
     { "nopQ",		{ Ev }, 0 },
@@ -3901,6 +3915,14 @@ static const struct dis386 prefix_table[][4] = {
     { "bndcn",  { Gbnd, Ev_bnd }, 0 },
   },
 
+  /* PREFIX_0F1C */
+  {
+    { MOD_TABLE (MOD_0F1C_PREFIX_0) },
+    { "nopQ",	{ Ev }, PREFIX_OPCODE },
+    { "nopQ",	{ Ev }, PREFIX_OPCODE },
+    { "nopQ",	{ Ev }, PREFIX_OPCODE },
+  },
+
   /* PREFIX_0F1E */
   {
     { "nopQ",	{ Ev }, PREFIX_OPCODE },
@@ -11620,6 +11642,11 @@ static const struct dis386 mod_table[][2] = {
     { "bndmk",		{ Gbnd, Ev_bnd }, 0 },
     { "nopQ",		{ Ev }, 0 },
   },
+  {
+    /* MOD_0F1C_PREFIX_0 */
+    { REG_TABLE (REG_0F1C_MOD_0) },
+    { "nopQ",		{ Ev }, 0 },
+  },
   {
     /* MOD_0F1E_PREFIX_1 */
     { "nopQ",		{ Ev }, 0 },

opcodes/i386-gen.c

@@ -285,6 +285,8 @@ static initializer cpu_flag_init[] =
     "CpuPCONFIG" },
   { "CPU_WAITPKG_FLAGS",
     "CpuWAITPKG" },
+  { "CPU_CLDEMOTE_FLAGS",
+    "CpuCLDEMOTE" },
   { "CPU_ANY_X87_FLAGS",
     "CPU_ANY_287_FLAGS|Cpu8087" },
   { "CPU_ANY_287_FLAGS",
@@ -578,6 +580,7 @@ static bitfield cpu_flags[] =
   BITFIELD (CpuWBNOINVD),
   BITFIELD (CpuPCONFIG),
   BITFIELD (CpuWAITPKG),
+  BITFIELD (CpuCLDEMOTE),
   BITFIELD (CpuRegMMX),
   BITFIELD (CpuRegXMM),
   BITFIELD (CpuRegYMM),

opcodes/i386-opc.h

@@ -229,6 +229,8 @@ enum
   CpuPCONFIG,
   /* WAITPKG instructions required */
   CpuWAITPKG,
+  /* CLDEMOTE instruction required */
+  CpuCLDEMOTE,
   /* MMX register support required */
   CpuRegMMX,
   /* XMM register support required */
@@ -361,6 +363,7 @@ typedef union i386_cpu_flags
       unsigned int cpuwbnoinvd:1;
       unsigned int cpupconfig:1;
       unsigned int cpuwaitpkg:1;
+      unsigned int cpucldemote:1;
       unsigned int cpuregmmx:1;
       unsigned int cpuregxmm:1;
       unsigned int cpuregymm:1;

opcodes/i386-opc.tbl

@@ -5909,3 +5909,9 @@ tpause, 1, 0x660fae, 0x6, 2, CpuWAITPKG, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|N
 umwait, 1, 0xf20fae, 0x6, 2, CpuWAITPKG, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { Reg32|Reg64 }
 
 // WAITPKG instructions end.
+
+// CLDEMOTE instructions.
+
+cldemote, 1, 0x0f1c, 0x0, 2, CpuCLDEMOTE, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Anysize|BaseIndex }
+
+// CLDEMOTE instructions end.