x86: Set EVex=2 on EVEX.128 only vmovd and vmovq

EVEX "VMOVD xmm1, r32/m32", "VMOVD r32/m32, xmm2", "VMOVQ xmm1, r64/m64",
"VMOVD r64/m64, xmm2", "VMOVQ xmm1, xmm2/m64" and "VMOVQ xmm1/m64, xmm2"
can only be encoded with EVEX.128.  Set EVex=2 on EVEX.128 only vmovd and
vmovq.

gas/

	PR gas/23670
	* testsuite/gas/i386/evex-lig-2.d: New file.
	* testsuite/gas/i386/evex-lig-2.s: Likewise.
	* testsuite/gas/i386/x86-64-evex-lig-2.d: Likewise.
	* testsuite/gas/i386/x86-64-evex-lig-2.s: Likewise.
	* testsuite/gas/i386/i386.exp: Run evex-lig-2 and
	x86-64-evex-lig-2.

opcodes/

	PR gas/23670
	* i386-dis-evex.h (evex_table): Use EVEX_LEN_0F6E_P_2,
	EVEX_LEN_0F7E_P_1, EVEX_LEN_0F7E_P_2 and EVEX_LEN_0FD6_P_2.
	(EVEX_LEN_0F6E_P_2): New EVEX_LEN_TABLE entry.
	(EVEX_LEN_0F7E_P_1): Likewise.
	(EVEX_LEN_0F7E_P_2): Likewise.
	(EVEX_LEN_0FD6_P_2): Likewise.
	* i386-dis.c (USE_EVEX_LEN_TABLE): New.
	(EVEX_LEN_TABLE): Likewise.
	(EVEX_LEN_0F6E_P_2): New enum.
	(EVEX_LEN_0F7E_P_1): Likewise.
	(EVEX_LEN_0F7E_P_2): Likewise.
	(EVEX_LEN_0FD6_P_2): Likewise.
	(evex_len_table): New.
	(get_valid_dis386): Handle USE_EVEX_LEN_TABLE.
	* i386-opc.tbl: Set EVex=2 on EVEX.128 only vmovd and vmovq.
	* i386-tbl.h: Regenerated.

gas/ChangeLog

@@ -1,3 +1,13 @@
+2018-09-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/23670
+	* testsuite/gas/i386/evex-lig-2.d: New file.
+	* testsuite/gas/i386/evex-lig-2.s: Likewise.
+	* testsuite/gas/i386/x86-64-evex-lig-2.d: Likewise.
+	* testsuite/gas/i386/x86-64-evex-lig-2.s: Likewise.
+	* testsuite/gas/i386/i386.exp: Run evex-lig-2 and
+	x86-64-evex-lig-2.
+
 2018-09-17  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR gas/23665

gas/testsuite/gas/i386/evex-lig-2.d

@@ -0,0 +1,18 @@
+#as: -mevexlig=256
+#objdump: -dw
+#name: i386 EVEX non-LIG insns with -mevexlig=256
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+ +[a-f0-9]+:	62 f1 7d 08 7e 21    	vmovd  %xmm4,\(%ecx\)
+ +[a-f0-9]+:	62 f1 7d 08 7e e1    	vmovd  %xmm4,%ecx
+ +[a-f0-9]+:	62 f1 7d 08 6e 21    	vmovd  \(%ecx\),%xmm4
+ +[a-f0-9]+:	62 f1 7d 08 6e e1    	vmovd  %ecx,%xmm4
+ +[a-f0-9]+:	62 f1 fd 08 d6 21    	vmovq  %xmm4,\(%ecx\)
+ +[a-f0-9]+:	62 f1 fe 08 7e 21    	vmovq  \(%ecx\),%xmm4
+ +[a-f0-9]+:	62 f1 fe 08 7e f4    	vmovq  %xmm4,%xmm6
+#pass

gas/testsuite/gas/i386/evex-lig-2.s

@@ -0,0 +1,14 @@
+# Check EVEX non-LIG instructions with with -mevexlig=256
+
+	.allow_index_reg
+	.text
+_start:
+	{evex} vmovd %xmm4,(%ecx)
+	{evex} vmovd %xmm4,%ecx
+	{evex} vmovd (%ecx),%xmm4
+	{evex} vmovd %ecx,%xmm4
+
+	{evex} vmovq %xmm4,(%ecx)
+	{evex} vmovq (%ecx),%xmm4
+
+	{evex} vmovq %xmm4,%xmm6

gas/testsuite/gas/i386/i386.exp

@@ -234,6 +234,7 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "evex-lig512"
     run_dump_test "evex-lig256-intel"
     run_dump_test "evex-lig512-intel"
+    run_dump_test "evex-lig-2"
     run_dump_test "evex-wig1"
     run_dump_test "evex-wig1-intel"
     run_dump_test "evex-wig2"
@@ -753,6 +754,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-evex-lig512"
     run_dump_test "x86-64-evex-lig256-intel"
     run_dump_test "x86-64-evex-lig512-intel"
+    run_dump_test "x86-64-evex-lig-2"
     run_dump_test "x86-64-evex-wig1"
     run_dump_test "x86-64-evex-wig1-intel"
     run_dump_test "x86-64-evex-wig2"

gas/testsuite/gas/i386/x86-64-evex-lig-2.d

@@ -0,0 +1,20 @@
+#as: -mevexlig=256
+#objdump: -dw
+#name: x86-64 EVEX non-LIG insns with -mevexlig=256
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+ +[a-f0-9]+:	62 f1 7d 08 7e 21    	vmovd  %xmm4,\(%rcx\)
+ +[a-f0-9]+:	62 f1 7d 08 7e e1    	vmovd  %xmm4,%ecx
+ +[a-f0-9]+:	62 f1 7d 08 6e 21    	vmovd  \(%rcx\),%xmm4
+ +[a-f0-9]+:	62 f1 7d 08 6e e1    	vmovd  %ecx,%xmm4
+ +[a-f0-9]+:	62 f1 fd 08 7e 21    	vmovq  %xmm4,\(%rcx\)
+ +[a-f0-9]+:	62 f1 fd 08 7e e1    	vmovq  %xmm4,%rcx
+ +[a-f0-9]+:	62 f1 fd 08 6e 21    	vmovq  \(%rcx\),%xmm4
+ +[a-f0-9]+:	62 f1 fd 08 6e e1    	vmovq  %rcx,%xmm4
+ +[a-f0-9]+:	62 f1 fe 08 7e f4    	vmovq  %xmm4,%xmm6
+#pass

gas/testsuite/gas/i386/x86-64-evex-lig-2.s

@@ -0,0 +1,15 @@
+# Check EVEX non-LIG instructions with with -mevexlig=256
+
+	.allow_index_reg
+	.text
+_start:
+	{evex} vmovd %xmm4,(%rcx)
+	{evex} vmovd %xmm4,%ecx
+	{evex} vmovd (%rcx),%xmm4
+	{evex} vmovd %ecx,%xmm4
+
+	{evex} vmovq %xmm4,(%rcx)
+	{evex} vmovq %xmm4,%rcx
+	{evex} vmovq (%rcx),%xmm4
+	{evex} vmovq %rcx,%xmm4
+	{evex} vmovq %xmm4,%xmm6

opcodes/ChangeLog

@@ -1,3 +1,23 @@
+2018-09-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/23670
+	* i386-dis-evex.h (evex_table): Use EVEX_LEN_0F6E_P_2,
+	EVEX_LEN_0F7E_P_1, EVEX_LEN_0F7E_P_2 and EVEX_LEN_0FD6_P_2.
+	(EVEX_LEN_0F6E_P_2): New EVEX_LEN_TABLE entry.
+	(EVEX_LEN_0F7E_P_1): Likewise.
+	(EVEX_LEN_0F7E_P_2): Likewise.
+	(EVEX_LEN_0FD6_P_2): Likewise.
+	* i386-dis.c (USE_EVEX_LEN_TABLE): New.
+	(EVEX_LEN_TABLE): Likewise.
+	(EVEX_LEN_0F6E_P_2): New enum.
+	(EVEX_LEN_0F7E_P_1): Likewise.
+	(EVEX_LEN_0F7E_P_2): Likewise.
+	(EVEX_LEN_0FD6_P_2): Likewise.
+	(evex_len_table): New.
+	(get_valid_dis386): Handle USE_EVEX_LEN_TABLE.
+	* i386-opc.tbl: Set EVex=2 on EVEX.128 only vmovd and vmovq.
+	* i386-tbl.h: Regenerated.
+
 2018-09-17  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR gas/23665

opcodes/i386-dis-evex.h

@@ -1208,7 +1208,7 @@ static const struct dis386 evex_table[][256] = {
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { VEX_W_TABLE (EVEX_W_0F6E_P_2) },
+    { EVEX_LEN_TABLE (EVEX_LEN_0F6E_P_2) },
   },
   /* PREFIX_EVEX_0F6F */
   {
@@ -1345,8 +1345,8 @@ static const struct dis386 evex_table[][256] = {
   /* PREFIX_EVEX_0F7E */
   {
     { Bad_Opcode },
-    { VEX_W_TABLE (EVEX_W_0F7E_P_1) },
+    { EVEX_LEN_TABLE (EVEX_LEN_0F7E_P_1) },
-    { VEX_W_TABLE (EVEX_W_0F7E_P_2) },
+    { EVEX_LEN_TABLE (EVEX_LEN_0F7E_P_2) },
   },
   /* PREFIX_EVEX_0F7F */
   {
@@ -1414,7 +1414,7 @@ static const struct dis386 evex_table[][256] = {
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { VEX_W_TABLE (EVEX_W_0FD6_P_2) },
+    { EVEX_LEN_TABLE (EVEX_LEN_0FD6_P_2) },
   },
   /* PREFIX_EVEX_0FD8 */
   {
@@ -4100,3 +4100,25 @@ static const struct dis386 evex_table[][256] = {
   },
 #endif /* NEED_MOD_TABLE */
 
+#ifdef NEED_EVEX_LEN_TABLE
+  /* EVEX_LEN_0F6E_P_2 */
+  {
+    { VEX_W_TABLE (EVEX_W_0F6E_P_2) },
+  },
+
+  /* EVEX_LEN_0F7E_P_1 */
+  {
+    { VEX_W_TABLE (EVEX_W_0F7E_P_1) },
+  },
+
+  /* EVEX_LEN_0F7E_P_2 */
+  {
+    { VEX_W_TABLE (EVEX_W_0F7E_P_2) },
+  },
+
+  /* EVEX_LEN_0FD6_P_2 */
+  {
+    { VEX_W_TABLE (EVEX_W_0FD6_P_2) },
+  },
+
+#endif /* NEED_EVEX_LEN_TABLE */

opcodes/i386-dis.c

@@ -703,7 +703,8 @@ enum
   USE_VEX_C5_TABLE,
   USE_VEX_LEN_TABLE,
   USE_VEX_W_TABLE,
-  USE_EVEX_TABLE
+  USE_EVEX_TABLE,
+  USE_EVEX_LEN_TABLE
 };
 
 #define FLOAT			NULL, { { NULL, FLOATCODE } }, 0
@@ -723,6 +724,7 @@ enum
 #define VEX_LEN_TABLE(I)	DIS386 (USE_VEX_LEN_TABLE, (I))
 #define VEX_W_TABLE(I)		DIS386 (USE_VEX_W_TABLE, (I))
 #define EVEX_TABLE(I)		DIS386 (USE_EVEX_TABLE, (I))
+#define EVEX_LEN_TABLE(I)	DIS386 (USE_EVEX_LEN_TABLE, (I))
 
 enum
 {
@@ -1929,6 +1931,14 @@ enum
   VEX_LEN_0FXOP_09_81
 };
 
+enum
+{
+  EVEX_LEN_0F6E_P_2 = 0,
+  EVEX_LEN_0F7E_P_1,
+  EVEX_LEN_0F7E_P_2,
+  EVEX_LEN_0FD6_P_2
+};
+
 enum
 {
   VEX_W_0F41_P_0_LEN_1 = 0,
@@ -9882,6 +9892,12 @@ static const struct dis386 vex_len_table[][2] = {
   },
 };
 
+static const struct dis386 evex_len_table[][3] = {
+#define NEED_EVEX_LEN_TABLE
+#include "i386-dis-evex.h"
+#undef NEED_EVEX_LEN_TABLE
+};
+
 static const struct dis386 vex_w_table[][2] = {
   {
     /* VEX_W_0F41_P_0_LEN_1 */
@@ -11542,6 +11558,29 @@ get_valid_dis386 (const struct dis386 *dp, disassemble_info *info)
       dp = &vex_len_table[dp->op[1].bytemode][vindex];
       break;
 
+    case USE_EVEX_LEN_TABLE:
+      if (!vex.evex)
+	abort ();
+
+      switch (vex.length)
+	{
+	case 128:
+	  vindex = 0;
+	  break;
+	case 256:
+	  vindex = 1;
+	  break;
+	case 512:
+	  vindex = 2;
+	  break;
+	default:
+	  abort ();
+	  break;
+	}
+
+      dp = &evex_len_table[dp->op[1].bytemode][vindex];
+      break;
+
     case USE_XOP_8F_TABLE:
       FETCH_DATA (info, codep + 3);
       /* All bits in the REX prefix are ignored.  */

opcodes/i386-opc.tbl

@@ -3689,7 +3689,7 @@ vmovaps, 2, 0x28, None, 1, CpuAVX512F, D|Modrm|MaskingMorZ|VexOpcode=0|VexW=1|Di
 vmovntps, 2, 0x2B, None, 1, CpuAVX512F, Modrm|VexOpcode=0|VexW=1|Disp8ShiftVL|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegYMM|RegZMM, XMMword|YMMword|ZMMword|Unspecified|BaseIndex }
 vmovups, 2, 0x10, None, 1, CpuAVX512F, D|Modrm|MaskingMorZ|VexOpcode=0|VexW=1|Disp8ShiftVL|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegYMM|RegZMM|Unspecified|BaseIndex, RegXMM|RegYMM|RegZMM }
 
-vmovd, 2, 0x666E, None, 1, CpuAVX512F, D|Modrm|EVex=4|VexOpcode=0|VexW=1|Disp8MemShift=2|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Reg32|Unspecified|BaseIndex, RegXMM }
+vmovd, 2, 0x666E, None, 1, CpuAVX512F, D|Modrm|EVex=2|VexOpcode=0|VexW=1|Disp8MemShift=2|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Reg32|Unspecified|BaseIndex, RegXMM }
 
 vmovddup, 2, 0xF212, None, 1, CpuAVX512F, Modrm|Masking=3|VexOpcode=0|VexW=2|Disp8ShiftVL|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegYMM|RegZMM|Unspecified|BaseIndex, RegYMM|RegZMM }
 
@@ -3712,9 +3712,9 @@ vmovhps, 2, 0x17, None, 1, CpuAVX512F, Modrm|EVex=4|VexOpcode=0|VexW=1|Disp8MemS
 vmovlps, 3, 0x12, None, 1, CpuAVX512F, Modrm|EVex=4|VexOpcode=0|VexVVVV=1|VexW=1|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Qword|Unspecified|BaseIndex, RegXMM, RegXMM }
 vmovlps, 2, 0x13, None, 1, CpuAVX512F, Modrm|EVex=4|VexOpcode=0|VexW=1|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM, Qword|Unspecified|BaseIndex }
 
-vmovq, 2, 0x666E, None, 1, CpuAVX512F|Cpu64, D|Modrm|EVex=4|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Reg64|Unspecified|BaseIndex, RegXMM }
+vmovq, 2, 0x666E, None, 1, CpuAVX512F|Cpu64, D|Modrm|EVex=2|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Reg64|Unspecified|BaseIndex, RegXMM }
-vmovq, 2, 0xF37E, None, 1, CpuAVX512F, Load|Modrm|EVex=4|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Qword|Unspecified|BaseIndex|RegXMM, RegXMM }
+vmovq, 2, 0xF37E, None, 1, CpuAVX512F, Load|Modrm|EVex=2|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Qword|Unspecified|BaseIndex|RegXMM, RegXMM }
-vmovq, 2, 0x66D6, None, 1, CpuAVX512F, Modrm|EVex=4|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM, Qword|Unspecified|BaseIndex|RegXMM }
+vmovq, 2, 0x66D6, None, 1, CpuAVX512F, Modrm|EVex=2|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM, Qword|Unspecified|BaseIndex|RegXMM }
 
 vmovsd, 2, 0xF210, None, 1, CpuAVX512F, D|Modrm|EVex=4|MaskingMorZ|VexOpcode=0|VexW=2|Disp8MemShift=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Qword|Unspecified|BaseIndex, RegXMM }
 vmovsd, 3, 0xF210, None, 1, CpuAVX512F, D|Modrm|EVex=4|Masking=3|VexOpcode=0|VexVVVV=1|VexW=2|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegMem, RegXMM, RegXMM }

opcodes/i386-tbl.h

@@ -35997,7 +35997,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 0, 0, 0 } },
     { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 1, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0,
+      0, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0,
       0, 0 },
     { { { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
 	  0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0,
@@ -36730,7 +36730,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 1, 0, 0 } },
     { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 2, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
+      0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
       0, 0 },
     { { { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1,
 	  0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
@@ -36747,7 +36747,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 0, 0, 0 } },
     { 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 2, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
+      0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
       0, 0 },
     { { { 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
 	  0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0,
@@ -36764,7 +36764,7 @@ const insn_template i386_optab[] =
         0, 0, 0, 0, 0, 0 } },
     { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1,
       1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-      0, 0, 2, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
+      0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0,
       0, 0 },
     { { { 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,