x86: Set Vex=1 on VEX.128 only vmovq

AVX "VMOVQ xmm1, xmm2/m64" and "VMOVQ xmm1/m64, xmm2" can only be
encoded with VEX.128.  Set Vex=1 on VEX.128 only vmovq and update
assembler tests.

gas/

	PR gas/23665
	* testsuite/gas/i386/avx-scalar-intel.d: Updated.
	* testsuite/gas/i386/avx-scalar.d: Likewise.
	* testsuite/gas/i386/x86-64-avx-scalar-intel.d: Likewise.
	* testsuite/gas/i386/x86-64-avx-scalar.d: Likewise.

opcodes/

	PR gas/23665
	* i386-dis.c (vex_len_table): Update VEX_LEN_0F7E_P_1 and
	VEX_LEN_0FD6_P_2 entries.
	* i386-opc.tbl: Set Vex=1 on VEX.128 only vmovq.
	* i386-tbl.h: Regenerated.

9 files changed, 52 insertions, 38 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 2a0d429aed3..ca20c80cf11 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,11 @@
+2018-09-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/23665
+	* testsuite/gas/i386/avx-scalar-intel.d: Updated.
+	* testsuite/gas/i386/avx-scalar.d: Likewise.
+	* testsuite/gas/i386/x86-64-avx-scalar-intel.d: Likewise.
+	* testsuite/gas/i386/x86-64-avx-scalar.d: Likewise.
+
 2018-09-15  Alan Modra  <amodra@gmail.com>
 
 	* testsuite/config/default.exp: Make tmpdir.
diff --git a/gas/testsuite/gas/i386/avx-scalar-intel.d b/gas/testsuite/gas/i386/avx-scalar-intel.d
index 83837d30e37..b02ea19dd55 100644
--- a/gas/testsuite/gas/i386/avx-scalar-intel.d
+++ b/gas/testsuite/gas/i386/avx-scalar-intel.d
@@ -15,8 +15,8 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 fd 2e 21          	vucomisd xmm4,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 10 21          	vmovsd xmm4,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd QWORD PTR \[ecx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si ecx,xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 2c cc          	vcvttsd2si ecx,xmm4
@@ -211,7 +211,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ce c2 11 07       	vcmpordss xmm2,xmm6,DWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss xmm2,xmm6,xmm4,0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[ecx\],0x7
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  xmm6,xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 fd 7e 05 34 12 00 00 	vmovd  DWORD PTR ds:0x1234,xmm0
@@ -246,10 +246,10 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ff 10 21          	vmovsd xmm4,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd QWORD PTR \[ecx\],xmm4
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd QWORD PTR \[ecx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[ecx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si ecx,xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[ecx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[ecx\]
@@ -542,7 +542,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss xmm2,xmm6,xmm4,0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[ecx\],0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[ecx\],0x7
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  xmm6,xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 fd 7e 05 34 12 00 00 	vmovd  DWORD PTR ds:0x1234,xmm0
diff --git a/gas/testsuite/gas/i386/avx-scalar.d b/gas/testsuite/gas/i386/avx-scalar.d
index b1a89e5cf68..0d20bd56e3c 100644
--- a/gas/testsuite/gas/i386/avx-scalar.d
+++ b/gas/testsuite/gas/i386/avx-scalar.d
@@ -14,8 +14,8 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 fd 2e 21          	vucomisd \(%ecx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 10 21          	vmovsd \(%ecx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd %xmm4,\(%ecx\)
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%ecx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%ecx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%ecx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%ecx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si %xmm4,%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%ecx\),%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2c cc          	vcvttsd2si %xmm4,%ecx
@@ -210,7 +210,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ce c2 11 07       	vcmpordss \(%ecx\),%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss \$0x7,%xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%ecx\),%xmm6,%xmm2
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  %xmm4,%xmm6
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  %xmm4,%xmm6
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 fd 7e 05 34 12 00 00 	vmovd  %xmm0,0x1234
@@ -245,10 +245,10 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ff 10 21          	vmovsd \(%ecx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd %xmm4,\(%ecx\)
 [ 	]*[a-f0-9]+:	c5 ff 11 21          	vmovsd %xmm4,\(%ecx\)
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%ecx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%ecx\),%xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%ecx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%ecx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%ecx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%ecx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%ecx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%ecx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si %xmm4,%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%ecx\),%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%ecx\),%ecx
@@ -541,7 +541,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss \$0x7,%xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%ecx\),%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%ecx\),%xmm6,%xmm2
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  %xmm4,%xmm6
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  %xmm4,%xmm6
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 fd 7e 05 34 12 00 00 	vmovd  %xmm0,0x1234
diff --git a/gas/testsuite/gas/i386/x86-64-avx-scalar-intel.d b/gas/testsuite/gas/i386/x86-64-avx-scalar-intel.d
index 8766c7c2174..6362bf170fa 100644
--- a/gas/testsuite/gas/i386/x86-64-avx-scalar-intel.d
+++ b/gas/testsuite/gas/i386/x86-64-avx-scalar-intel.d
@@ -19,8 +19,8 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  xmm4,rcx
 [ 	]*[a-f0-9]+:	c4 e1 fd 7e e1       	vmovq  rcx,xmm4
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  xmm4,rcx
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si ecx,xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c5 ff 2c cc          	vcvttsd2si ecx,xmm4
@@ -227,7 +227,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ce c2 11 07       	vcmpordss xmm2,xmm6,DWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss xmm2,xmm6,xmm4,0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[rcx\],0x7
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  xmm6,xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 7d 7e 04 25 78 56 34 12 	vmovd  DWORD PTR ds:0x12345678,xmm8
@@ -283,10 +283,10 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 fd 6e 21          	vmovd  xmm4,DWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c4 e1 fd 7e e1       	vmovq  rcx,xmm4
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  xmm4,rcx
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  QWORD PTR \[rcx\],xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  xmm4,QWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si ecx,xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[rcx\]
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si ecx,QWORD PTR \[rcx\]
@@ -595,7 +595,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss xmm2,xmm6,xmm4,0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[rcx\],0x7
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss xmm2,xmm6,DWORD PTR \[rcx\],0x7
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  xmm6,xmm4
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss xmm2,xmm6,xmm4
 [ 	]*[a-f0-9]+:	c5 7d 7e 04 25 78 56 34 12 	vmovd  DWORD PTR ds:0x12345678,xmm8
diff --git a/gas/testsuite/gas/i386/x86-64-avx-scalar.d b/gas/testsuite/gas/i386/x86-64-avx-scalar.d
index f93413d9173..93f14fd9bdd 100644
--- a/gas/testsuite/gas/i386/x86-64-avx-scalar.d
+++ b/gas/testsuite/gas/i386/x86-64-avx-scalar.d
@@ -18,8 +18,8 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  %rcx,%xmm4
 [ 	]*[a-f0-9]+:	c4 e1 fd 7e e1       	vmovq  %xmm4,%rcx
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  %rcx,%xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%rcx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%rcx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%rcx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%rcx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si %xmm4,%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%rcx\),%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2c cc          	vcvttsd2si %xmm4,%ecx
@@ -226,7 +226,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 ce c2 11 07       	vcmpordss \(%rcx\),%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss \$0x7,%xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%rcx\),%xmm6,%xmm2
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  %xmm4,%xmm6
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  %xmm4,%xmm6
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 7d 7e 04 25 78 56 34 12 	vmovd  %xmm8,0x12345678
@@ -282,10 +282,10 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c5 fd 6e 21          	vmovd  \(%rcx\),%xmm4
 [ 	]*[a-f0-9]+:	c4 e1 fd 7e e1       	vmovq  %xmm4,%rcx
 [ 	]*[a-f0-9]+:	c4 e1 fd 6e e1       	vmovq  %rcx,%xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%rcx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%rcx\),%xmm4
-[ 	]*[a-f0-9]+:	c5 fd d6 21          	vmovq  %xmm4,\(%rcx\)
-[ 	]*[a-f0-9]+:	c5 fe 7e 21          	vmovq  \(%rcx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%rcx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%rcx\),%xmm4
+[ 	]*[a-f0-9]+:	c5 f9 d6 21          	vmovq  %xmm4,\(%rcx\)
+[ 	]*[a-f0-9]+:	c5 fa 7e 21          	vmovq  \(%rcx\),%xmm4
 [ 	]*[a-f0-9]+:	c5 ff 2d cc          	vcvtsd2si %xmm4,%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%rcx\),%ecx
 [ 	]*[a-f0-9]+:	c5 ff 2d 09          	vcvtsd2si \(%rcx\),%ecx
@@ -594,7 +594,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a d4 07    	vroundss \$0x7,%xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%rcx\),%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c4 e3 4d 0a 11 07    	vroundss \$0x7,\(%rcx\),%xmm6,%xmm2
-[ 	]*[a-f0-9]+:	c5 fe 7e f4          	vmovq  %xmm4,%xmm6
+[ 	]*[a-f0-9]+:	c5 fa 7e f4          	vmovq  %xmm4,%xmm6
 [ 	]*[a-f0-9]+:	c5 cf 10 d4          	vmovsd %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 ce 10 d4          	vmovss %xmm4,%xmm6,%xmm2
 [ 	]*[a-f0-9]+:	c5 7d 7e 04 25 78 56 34 12 	vmovd  %xmm8,0x12345678
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 7d5f796a773..408512c5bfc 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,11 @@
+2018-09-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/23665
+	* i386-dis.c (vex_len_table): Update VEX_LEN_0F7E_P_1 and
+	VEX_LEN_0FD6_P_2 entries.
+	* i386-opc.tbl: Set Vex=1 on VEX.128 only vmovq.
+	* i386-tbl.h: Regenerated.
+
 2018-09-14  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR gas/23642
diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c
index 9453e52d643..52521745bce 100644
--- a/opcodes/i386-dis.c
+++ b/opcodes/i386-dis.c
@@ -9848,7 +9848,6 @@ static const struct dis386 vex_len_table[][2] = {
   /* VEX_LEN_0F7E_P_1 */
   {
     { VEX_W_TABLE (VEX_W_0F7E_P_1) },
-    { VEX_W_TABLE (VEX_W_0F7E_P_1) },
   },
 
   /* VEX_LEN_0F7E_P_2 */
@@ -9962,7 +9961,6 @@ static const struct dis386 vex_len_table[][2] = {
   /* VEX_LEN_0FD6_P_2 */
   {
     { VEX_W_TABLE (VEX_W_0FD6_P_2) },
-    { VEX_W_TABLE (VEX_W_0FD6_P_2) },
   },
 
   /* VEX_LEN_0FF7_P_2 */
diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl
index 5a8e79ca771..d37a08c20df 100644
--- a/opcodes/i386-opc.tbl
+++ b/opcodes/i386-opc.tbl
@@ -2030,8 +2030,8 @@ vmovntdq, 2, 0x66e7, None, 1, CpuAVX, Modrm|Vex|VexOpcode=0|VexW=3|CheckRegSize|
 vmovntdqa, 2, 0x662a, None, 1, CpuAVX, Modrm|Vex|VexOpcode=1|VexW=3|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Xmmword|Unspecified|BaseIndex, RegXMM }
 vmovntpd, 2, 0x662b, None, 1, CpuAVX, Modrm|Vex|VexOpcode=0|VexW=3|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegYMM, Xmmword|Ymmword|Unspecified|BaseIndex }
 vmovntps, 2, 0x2b, None, 1, CpuAVX, Modrm|Vex|VexOpcode=0|VexW=3|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegYMM, Xmmword|Ymmword|Unspecified|BaseIndex }
-vmovq, 2, 0xf37e, None, 1, CpuAVX, Load|Modrm|Vex=3|VexOpcode=0|VexW=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { Qword|Unspecified|BaseIndex|RegXMM, RegXMM }
-vmovq, 2, 0x66d6, None, 1, CpuAVX, Modrm|Vex=3|VexOpcode=0|VexW=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { RegXMM, Qword|Unspecified|BaseIndex|RegXMM }
+vmovq, 2, 0xf37e, None, 1, CpuAVX, Load|Modrm|Vex=1|VexOpcode=0|VexW=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { Qword|Unspecified|BaseIndex|RegXMM, RegXMM }
+vmovq, 2, 0x66d6, None, 1, CpuAVX, Modrm|Vex=1|VexOpcode=0|VexW=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { RegXMM, Qword|Unspecified|BaseIndex|RegXMM }
 vmovq, 2, 0x666e, None, 1, CpuAVX|Cpu64, D|Modrm|Vex=3|VexOpcode=0|VexW=2|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|Size64, { Reg64|Unspecified|BaseIndex, RegXMM }
 vmovsd, 2, 0xf210, None, 1, CpuAVX, D|Modrm|Vex=3|VexOpcode=0|VexW=3|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Qword|Unspecified|BaseIndex, RegXMM }
 vmovsd, 3, 0xf210, None, 1, CpuAVX, D|Modrm|Vex=3|VexOpcode=0|VexVVVV=1|VexW=3|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegXMM|RegMem, RegXMM, RegXMM }
diff --git a/opcodes/i386-tbl.h b/opcodes/i386-tbl.h
index 8966d5201bb..f99daa0a010 100644
--- a/opcodes/i386-tbl.h
+++ b/opcodes/i386-tbl.h
@@ -36679,7 +36679,7 @@ 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, 1, 0, 0,
-      3, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      1, 0, 3, 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, 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,
@@ -36696,7 +36696,7 @@ 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, 1, 0, 0,
-      3, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      1, 0, 3, 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, 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,