x86: simplify decode of opcodes valid with (embedded) 66 prefix only

The only valid (embedded or explicit) prefix being the data size one
(which is a fairly common pattern), avoid going through prefix_table[].
Instead extend the "required prefix" logic to also handle PREFIX_DATA
alone in a table entry, now used to identify this case. This requires
moving the (adjusted) ->prefix_requirement logic ahead of the printing
of stray prefixes, as the latter needs to observe the new setting of
PREFIX_DATA in used_prefixes.

Also add PREFIX_OPCODE on related entries when previously there was
mistakenly no decode step through prefix_table[].

1 files changed, 134 insertions, 134 deletions

diff --git a/opcodes/i386-dis-evex-len.h b/opcodes/i386-dis-evex-len.h
index 51f19dc..ebe0945 100644
--- a/opcodes/i386-dis-evex-len.h
+++ b/opcodes/i386-dis-evex-len.h
@@ -1,7 +1,7 @@
 static const struct dis386 evex_len_table[][3] = {
-  /* EVEX_LEN_0F6E_P_2 */
+  /* EVEX_LEN_0F6E */
   {
-    { "vmovK",	{ XMScalar, Edq }, 0 },
+    { "vmovK",	{ XMScalar, Edq }, PREFIX_DATA },
   },
 
   /* EVEX_LEN_0F7E_P_1 */
@@ -14,61 +14,61 @@ static const struct dis386 evex_len_table[][3] = {
     { "vmovK",	{ Edq, XMScalar }, 0 },
   },
 
-  /* EVEX_LEN_0FC4_P_2 */
+  /* EVEX_LEN_0FC4 */
   {
-    { "vpinsrw",	{ XM, Vex, Edqw, Ib }, 0 },
+    { "vpinsrw",	{ XM, Vex, Edqw, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0FC5_P_2 */
+  /* EVEX_LEN_0FC5 */
   {
-    { "vpextrw",	{ Gdq, XS, Ib }, 0 },
+    { "vpextrw",	{ Gdq, XS, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0FD6_P_2 */
+  /* EVEX_LEN_0FD6 */
   {
-    { VEX_W_TABLE (EVEX_W_0FD6_P_2) },
+    { VEX_W_TABLE (EVEX_W_0FD6_L_0) },
   },
 
-  /* EVEX_LEN_0F3816_P_2 */
+  /* EVEX_LEN_0F3816 */
   {
     { Bad_Opcode },
-    { "vpermp%XW",	{ XM, Vex, EXx }, 0 },
-    { "vpermp%XW",	{ XM, Vex, EXx }, 0 },
+    { "vpermp%XW",	{ XM, Vex, EXx }, PREFIX_DATA },
+    { "vpermp%XW",	{ XM, Vex, EXx }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3819_P_2_W_0 */
+  /* EVEX_LEN_0F3819_W_0 */
   {
     { Bad_Opcode },
-    { "vbroadcastf32x2",	{ XM, EXxmm_mq }, 0 },
-    { "vbroadcastf32x2",	{ XM, EXxmm_mq }, 0 },
+    { "vbroadcastf32x2",	{ XM, EXxmm_mq }, PREFIX_DATA },
+    { "vbroadcastf32x2",	{ XM, EXxmm_mq }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3819_P_2_W_1 */
+  /* EVEX_LEN_0F3819_W_1 */
   {
     { Bad_Opcode },
-    { "vbroadcastsd",	{ XM, EXxmm_mq }, 0 },
-    { "vbroadcastsd",	{ XM, EXxmm_mq }, 0 },
+    { "vbroadcastsd",	{ XM, EXxmm_mq }, PREFIX_DATA },
+    { "vbroadcastsd",	{ XM, EXxmm_mq }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F381A_P_2_W_0_M_0 */
+  /* EVEX_LEN_0F381A_W_0_M_0 */
   {
     { Bad_Opcode },
-    { "vbroadcastf32x4",	{ XM, EXxmm }, 0 },
-    { "vbroadcastf32x4",	{ XM, EXxmm }, 0 },
+    { "vbroadcastf32x4",	{ XM, EXxmm }, PREFIX_DATA },
+    { "vbroadcastf32x4",	{ XM, EXxmm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F381A_P_2_W_1_M_0 */
+  /* EVEX_LEN_0F381A_W_1_M_0 */
   {
     { Bad_Opcode },
-    { "vbroadcastf64x2",	{ XM, EXxmm }, 0 },
-    { "vbroadcastf64x2",	{ XM, EXxmm }, 0 },
+    { "vbroadcastf64x2",	{ XM, EXxmm }, PREFIX_DATA },
+    { "vbroadcastf64x2",	{ XM, EXxmm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F381B_P_2_W_0_M_0 */
+  /* EVEX_LEN_0F381B_W_0_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vbroadcastf32x8",	{ XM, EXymm }, 0 },
+    { "vbroadcastf32x8",	{ XM, EXymm }, PREFIX_DATA },
   },
 
   /* EVEX_LEN_0F381B_P_2_W_1_M_0 */
@@ -78,311 +78,311 @@ static const struct dis386 evex_len_table[][3] = {
     { "vbroadcastf64x4",	{ XM, EXymm }, 0 },
   },
 
-  /* EVEX_LEN_0F3836_P_2 */
+  /* EVEX_LEN_0F3836 */
   {
     { Bad_Opcode },
-    { "vperm%DQ",	{ XM, Vex, EXx }, 0 },
-    { "vperm%DQ",	{ XM, Vex, EXx }, 0 },
+    { "vperm%DQ",	{ XM, Vex, EXx }, PREFIX_DATA },
+    { "vperm%DQ",	{ XM, Vex, EXx }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F385A_P_2_W_0_M_0 */
+  /* EVEX_LEN_0F385A_W_0_M_0 */
   {
     { Bad_Opcode },
-    { "vbroadcasti32x4",	{ XM, EXxmm }, 0 },
-    { "vbroadcasti32x4",	{ XM, EXxmm }, 0 },
+    { "vbroadcasti32x4",	{ XM, EXxmm }, PREFIX_DATA },
+    { "vbroadcasti32x4",	{ XM, EXxmm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F385A_P_2_W_1_M_0 */
+  /* EVEX_LEN_0F385A_W_1_M_0 */
   {
     { Bad_Opcode },
-    { "vbroadcasti64x2",	{ XM, EXxmm }, 0 },
-    { "vbroadcasti64x2",	{ XM, EXxmm }, 0 },
+    { "vbroadcasti64x2",	{ XM, EXxmm }, PREFIX_DATA },
+    { "vbroadcasti64x2",	{ XM, EXxmm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F385B_P_2_W_0_M_0 */
+  /* EVEX_LEN_0F385B_W_0_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vbroadcasti32x8",	{ XM, EXymm }, 0 },
+    { "vbroadcasti32x8",	{ XM, EXymm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F385B_P_2_W_1_M_0 */
+  /* EVEX_LEN_0F385B_W_1_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vbroadcasti64x4",	{ XM, EXymm }, 0 },
+    { "vbroadcasti64x4",	{ XM, EXymm }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C6_REG_1_PREFIX_2 */
+  /* EVEX_LEN_0F38C6_R_1_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf0dp%XW",  { MVexVSIBDWpX }, 0 },
+    { "vgatherpf0dp%XW",  { MVexVSIBDWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C6_REG_2_PREFIX_2 */
+  /* EVEX_LEN_0F38C6_R_2_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf1dp%XW",  { MVexVSIBDWpX }, 0 },
+    { "vgatherpf1dp%XW",  { MVexVSIBDWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C6_REG_5_PREFIX_2 */
+  /* EVEX_LEN_0F38C6_R_5_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf0dp%XW",  { MVexVSIBDWpX }, 0 },
+    { "vscatterpf0dp%XW",  { MVexVSIBDWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C6_REG_6_PREFIX_2 */
+  /* EVEX_LEN_0F38C6_R_6_M_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf1dp%XW",  { MVexVSIBDWpX }, 0 },
+    { "vscatterpf1dp%XW",  { MVexVSIBDWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_1_P_2_W_0 */
+  /* EVEX_LEN_0F38C7_R_1_M_0_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf0qps",  { MVexVSIBDQWpX }, 0 },
+    { "vgatherpf0qps",  { MVexVSIBDQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_1_P_2_W_1 */
+  /* EVEX_LEN_0F38C7_R_1_M_0_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf0qpd",  { MVexVSIBQWpX }, 0 },
+    { "vgatherpf0qpd",  { MVexVSIBQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_2_P_2_W_0 */
+  /* EVEX_LEN_0F38C7_R_2_M_0_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf1qps",  { MVexVSIBDQWpX }, 0 },
+    { "vgatherpf1qps",  { MVexVSIBDQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_2_P_2_W_1 */
+  /* EVEX_LEN_0F38C7_R_2_M_0_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vgatherpf1qpd",  { MVexVSIBQWpX }, 0 },
+    { "vgatherpf1qpd",  { MVexVSIBQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_5_P_2_W_0 */
+  /* EVEX_LEN_0F38C7_R_5_M_0_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf0qps",  { MVexVSIBDQWpX }, 0 },
+    { "vscatterpf0qps",  { MVexVSIBDQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_5_P_2_W_1 */
+  /* EVEX_LEN_0F38C7_R_5_M_0_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf0qpd",  { MVexVSIBQWpX }, 0 },
+    { "vscatterpf0qpd",  { MVexVSIBQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_6_P_2_W_0 */
+  /* EVEX_LEN_0F38C7_R_6_M_0_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf1qps",  { MVexVSIBDQWpX }, 0 },
+    { "vscatterpf1qps",  { MVexVSIBDQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F38C7_R_6_P_2_W_1 */
+  /* EVEX_LEN_0F38C7_R_6_M_0_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vscatterpf1qpd",  { MVexVSIBQWpX }, 0 },
+    { "vscatterpf1qpd",  { MVexVSIBQWpX }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A00_P_2_W_1 */
+  /* EVEX_LEN_0F3A00_W_1 */
   {
     { Bad_Opcode },
-    { "vpermq",	{ XM, EXx, Ib }, 0 },
-    { "vpermq",	{ XM, EXx, Ib }, 0 },
+    { "vpermq",	{ XM, EXx, Ib }, PREFIX_DATA },
+    { "vpermq",	{ XM, EXx, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A01_P_2_W_1 */
+  /* EVEX_LEN_0F3A01_W_1 */
   {
     { Bad_Opcode },
-    { "vpermpd",	{ XM, EXx, Ib }, 0 },
-    { "vpermpd",	{ XM, EXx, Ib }, 0 },
+    { "vpermpd",	{ XM, EXx, Ib }, PREFIX_DATA },
+    { "vpermpd",	{ XM, EXx, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A14_P_2 */
+  /* EVEX_LEN_0F3A14 */
   {
-    { "vpextrb",	{ Edqb, XM, Ib }, 0 },
+    { "vpextrb",	{ Edqb, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A15_P_2 */
+  /* EVEX_LEN_0F3A15 */
   {
-    { "vpextrw",	{ Edqw, XM, Ib }, 0 },
+    { "vpextrw",	{ Edqw, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A16_P_2 */
+  /* EVEX_LEN_0F3A16 */
   {
-    { "vpextrK",	{ Edq, XM, Ib }, 0 },
+    { "vpextrK",	{ Edq, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A17_P_2 */
+  /* EVEX_LEN_0F3A17 */
   {
-    { "vextractps",	{ Edqd, XMM, Ib }, 0 },
+    { "vextractps",	{ Edqd, XMM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A18_P_2_W_0 */
+  /* EVEX_LEN_0F3A18_W_0 */
   {
     { Bad_Opcode },
-    { "vinsertf32x4",	{ XM, Vex, EXxmm, Ib }, 0 },
-    { "vinsertf32x4",	{ XM, Vex, EXxmm, Ib }, 0 },
+    { "vinsertf32x4",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
+    { "vinsertf32x4",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A18_P_2_W_1 */
+  /* EVEX_LEN_0F3A18_W_1 */
   {
     { Bad_Opcode },
-    { "vinsertf64x2",	{ XM, Vex, EXxmm, Ib }, 0 },
-    { "vinsertf64x2",	{ XM, Vex, EXxmm, Ib }, 0 },
+    { "vinsertf64x2",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
+    { "vinsertf64x2",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A19_P_2_W_0 */
+  /* EVEX_LEN_0F3A19_W_0 */
   {
     { Bad_Opcode },
-    { "vextractf32x4",	{ EXxmm, XM, Ib }, 0 },
-    { "vextractf32x4",	{ EXxmm, XM, Ib }, 0 },
+    { "vextractf32x4",	{ EXxmm, XM, Ib }, PREFIX_DATA },
+    { "vextractf32x4",	{ EXxmm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A19_P_2_W_1 */
+  /* EVEX_LEN_0F3A19_W_1 */
   {
     { Bad_Opcode },
-    { "vextractf64x2",	{ EXxmm, XM, Ib }, 0 },
-    { "vextractf64x2",	{ EXxmm, XM, Ib }, 0 },
+    { "vextractf64x2",	{ EXxmm, XM, Ib }, PREFIX_DATA },
+    { "vextractf64x2",	{ EXxmm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A1A_P_2_W_0 */
+  /* EVEX_LEN_0F3A1A_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vinsertf32x8",	{ XM, Vex, EXymm, Ib }, 0 },
+    { "vinsertf32x8",	{ XM, Vex, EXymm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A1A_P_2_W_1 */
+  /* EVEX_LEN_0F3A1A_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vinsertf64x4",	{ XM, Vex, EXymm, Ib }, 0 },
+    { "vinsertf64x4",	{ XM, Vex, EXymm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A1B_P_2_W_0 */
+  /* EVEX_LEN_0F3A1B_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vextractf32x8",	{ EXymm, XM, Ib }, 0 },
+    { "vextractf32x8",	{ EXymm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A1B_P_2_W_1 */
+  /* EVEX_LEN_0F3A1B_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vextractf64x4",	{ EXymm, XM, Ib }, 0 },
+    { "vextractf64x4",	{ EXymm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A20_P_2 */
+  /* EVEX_LEN_0F3A20 */
   {
-    { "vpinsrb",	{ XM, Vex, Edqb, Ib }, 0 },
+    { "vpinsrb",	{ XM, Vex, Edqb, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A21_P_2_W_0 */
+  /* EVEX_LEN_0F3A21_W_0 */
   {
-    { "vinsertps",	{ XMM, Vex, EXxmm_md, Ib }, 0 },
+    { "vinsertps",	{ XMM, Vex, EXxmm_md, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A22_P_2 */
+  /* EVEX_LEN_0F3A22 */
   {
-    { "vpinsrK",	{ XM, Vex, Edq, Ib }, 0 },
+    { "vpinsrK",	{ XM, Vex, Edq, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A23_P_2_W_0 */
+  /* EVEX_LEN_0F3A23_W_0 */
   {
     { Bad_Opcode },
-    { "vshuff32x4",	{ XM, Vex, EXx, Ib }, 0 },
-    { "vshuff32x4",	{ XM, Vex, EXx, Ib }, 0 },
+    { "vshuff32x4",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
+    { "vshuff32x4",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A23_P_2_W_1 */
+  /* EVEX_LEN_0F3A23_W_1 */
   {
     { Bad_Opcode },
-    { "vshuff64x2",	{ XM, Vex, EXx, Ib }, 0 },
-    { "vshuff64x2",	{ XM, Vex, EXx, Ib }, 0 },
+    { "vshuff64x2",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
+    { "vshuff64x2",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A38_P_2_W_0 */
+  /* EVEX_LEN_0F3A38_W_0 */
   {
     { Bad_Opcode },
-    { "vinserti32x4",	{ XM, Vex, EXxmm, Ib }, 0 },
-    { "vinserti32x4",	{ XM, Vex, EXxmm, Ib }, 0 },
+    { "vinserti32x4",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
+    { "vinserti32x4",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A38_P_2_W_1 */
+  /* EVEX_LEN_0F3A38_W_1 */
   {
     { Bad_Opcode },
-    { "vinserti64x2",	{ XM, Vex, EXxmm, Ib }, 0 },
-    { "vinserti64x2",	{ XM, Vex, EXxmm, Ib }, 0 },
+    { "vinserti64x2",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
+    { "vinserti64x2",	{ XM, Vex, EXxmm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A39_P_2_W_0 */
+  /* EVEX_LEN_0F3A39_W_0 */
   {
     { Bad_Opcode },
-    { "vextracti32x4",	{ EXxmm, XM, Ib }, 0 },
-    { "vextracti32x4",	{ EXxmm, XM, Ib }, 0 },
+    { "vextracti32x4",	{ EXxmm, XM, Ib }, PREFIX_DATA },
+    { "vextracti32x4",	{ EXxmm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A39_P_2_W_1 */
+  /* EVEX_LEN_0F3A39_W_1 */
   {
     { Bad_Opcode },
-    { "vextracti64x2",	{ EXxmm, XM, Ib }, 0 },
-    { "vextracti64x2",	{ EXxmm, XM, Ib }, 0 },
+    { "vextracti64x2",	{ EXxmm, XM, Ib }, PREFIX_DATA },
+    { "vextracti64x2",	{ EXxmm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A3A_P_2_W_0 */
+  /* EVEX_LEN_0F3A3A_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vinserti32x8",	{ XM, Vex, EXymm, Ib }, 0 },
+    { "vinserti32x8",	{ XM, Vex, EXymm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A3A_P_2_W_1 */
+  /* EVEX_LEN_0F3A3A_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vinserti64x4",	{ XM, Vex, EXymm, Ib }, 0 },
+    { "vinserti64x4",	{ XM, Vex, EXymm, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A3B_P_2_W_0 */
+  /* EVEX_LEN_0F3A3B_W_0 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vextracti32x8",	{ EXymm, XM, Ib }, 0 },
+    { "vextracti32x8",	{ EXymm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A3B_P_2_W_1 */
+  /* EVEX_LEN_0F3A3B_W_1 */
   {
     { Bad_Opcode },
     { Bad_Opcode },
-    { "vextracti64x4",	{ EXymm, XM, Ib }, 0 },
+    { "vextracti64x4",	{ EXymm, XM, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A43_P_2_W_0 */
+  /* EVEX_LEN_0F3A43_W_0 */
   {
     { Bad_Opcode },
-    { "vshufi32x4",	{ XM, Vex, EXx, Ib }, 0 },
-    { "vshufi32x4",	{ XM, Vex, EXx, Ib }, 0 },
+    { "vshufi32x4",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
+    { "vshufi32x4",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
   },
 
-  /* EVEX_LEN_0F3A43_P_2_W_1 */
+  /* EVEX_LEN_0F3A43_W_1 */
   {
     { Bad_Opcode },
-    { "vshufi64x2",	{ XM, Vex, EXx, Ib }, 0 },
-    { "vshufi64x2",	{ XM, Vex, EXx, Ib }, 0 },
+    { "vshufi64x2",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
+    { "vshufi64x2",	{ XM, Vex, EXx, Ib }, PREFIX_DATA },
   },
 };