diff --git a/target/hexagon/opcodes.h b/target/hexagon/opcodes.h
index fa7e321950..0ee11bd445 100644
--- a/target/hexagon/opcodes.h
+++ b/target/hexagon/opcodes.h
@@ -40,10 +40,6 @@ typedef enum {
 
 extern const char * const opcode_names[];
 
-extern const char * const opcode_reginfo[];
-extern const char * const opcode_rregs[];
-extern const char * const opcode_wregs[];
-
 typedef struct {
     const char * const encoding;
     const EncClass enc_class;
diff --git a/target/hexagon/decode.c b/target/hexagon/decode.c
index 84a3899556..23deba2426 100644
--- a/target/hexagon/decode.c
+++ b/target/hexagon/decode.c
@@ -115,24 +115,13 @@ static void
 decode_fill_newvalue_regno(Packet *packet)
 {
     int i, use_regidx, offset, def_idx, dst_idx;
-    uint16_t def_opcode, use_opcode;
-    char *dststr;
 
     for (i = 1; i < packet->num_insns; i++) {
         if (GET_ATTRIB(packet->insn[i].opcode, A_DOTNEWVALUE) &&
             !GET_ATTRIB(packet->insn[i].opcode, A_EXTENSION)) {
-            use_opcode = packet->insn[i].opcode;
-
-            /* It's a store, so we're adjusting the Nt field */
-            if (GET_ATTRIB(use_opcode, A_STORE)) {
-                use_regidx = strchr(opcode_reginfo[use_opcode], 't') -
-                    opcode_reginfo[use_opcode];
-            } else {    /* It's a Jump, so we're adjusting the Ns field */
-                use_regidx = strchr(opcode_reginfo[use_opcode], 's') -
-                    opcode_reginfo[use_opcode];
-            }
-            g_assert(packet->insn[i].new_read_idx != -1 &&
-                     packet->insn[i].new_read_idx == use_regidx);
+
+            g_assert(packet->insn[i].new_read_idx != -1);
+            use_regidx = packet->insn[i].new_read_idx;
 
             /*
              * What's encoded at the N-field is the offset to who's producing
@@ -153,39 +142,9 @@ decode_fill_newvalue_regno(Packet *packet)
              */
             g_assert(!((def_idx < 0) || (def_idx > (packet->num_insns - 1))));
 
-            /*
-             * packet->insn[def_idx] is the producer
-             * Figure out which type of destination it produces
-             * and the corresponding index in the reginfo
-             */
-            def_opcode = packet->insn[def_idx].opcode;
-            dststr = strstr(opcode_wregs[def_opcode], "Rd");
-            if (dststr) {
-                dststr = strchr(opcode_reginfo[def_opcode], 'd');
-            } else {
-                dststr = strstr(opcode_wregs[def_opcode], "Rx");
-                if (dststr) {
-                    dststr = strchr(opcode_reginfo[def_opcode], 'x');
-                } else {
-                    dststr = strstr(opcode_wregs[def_opcode], "Re");
-                    if (dststr) {
-                        dststr = strchr(opcode_reginfo[def_opcode], 'e');
-                    } else {
-                        dststr = strstr(opcode_wregs[def_opcode], "Ry");
-                        if (dststr) {
-                            dststr = strchr(opcode_reginfo[def_opcode], 'y');
-                        } else {
-                            g_assert_not_reached();
-                        }
-                    }
-                }
-            }
-            g_assert(dststr != NULL);
-
             /* Now patch up the consumer with the register number */
-            dst_idx = dststr - opcode_reginfo[def_opcode];
-            g_assert(packet->insn[def_idx].dest_idx != -1 &&
-                     packet->insn[def_idx].dest_idx == dst_idx);
+            g_assert(packet->insn[def_idx].dest_idx != -1);
+            dst_idx = packet->insn[def_idx].dest_idx;
             packet->insn[i].regno[use_regidx] =
                 packet->insn[def_idx].regno[dst_idx];
             /*
@@ -366,11 +325,7 @@ static void decode_shuffle_for_execution(Packet *packet)
         for (flag = false, i = 0; i < last_insn + 1; i++) {
             int opcode = packet->insn[i].opcode;
 
-            g_assert(packet->insn[i].has_pred_dest ==
-                     (strstr(opcode_wregs[opcode], "Pd4") ||
-                      strstr(opcode_wregs[opcode], "Pe4")));
-            if ((strstr(opcode_wregs[opcode], "Pd4") ||
-                 strstr(opcode_wregs[opcode], "Pe4")) &&
+            if (packet->insn[i].has_pred_dest &&
                 GET_ATTRIB(opcode, A_STORE) == 0) {
                 /* This should be a compare (not a store conditional) */
                 if (flag) {
diff --git a/target/hexagon/mmvec/decode_ext_mmvec.c b/target/hexagon/mmvec/decode_ext_mmvec.c
index c1320406df..f850d0154d 100644
--- a/target/hexagon/mmvec/decode_ext_mmvec.c
+++ b/target/hexagon/mmvec/decode_ext_mmvec.c
@@ -28,21 +28,15 @@ check_new_value(Packet *pkt)
 {
     /* .new value for a MMVector store */
     int i, j;
-    const char *reginfo;
-    const char *destletters;
-    const char *dststr = NULL;
     uint16_t def_opcode;
-    char letter;
 
     for (i = 1; i < pkt->num_insns; i++) {
         uint16_t use_opcode = pkt->insn[i].opcode;
         if (GET_ATTRIB(use_opcode, A_DOTNEWVALUE) &&
             GET_ATTRIB(use_opcode, A_CVI) &&
             GET_ATTRIB(use_opcode, A_STORE)) {
-            int use_regidx = strchr(opcode_reginfo[use_opcode], 's') -
-                opcode_reginfo[use_opcode];
-            g_assert(pkt->insn[i].new_read_idx != -1 &&
-                     pkt->insn[i].new_read_idx == use_regidx);
+            int use_regidx = pkt->insn[i].new_read_idx;
+            g_assert(pkt->insn[i].new_read_idx != -1);
             /*
              * What's encoded at the N-field is the offset to who's producing
              * the value.
@@ -70,33 +64,19 @@ check_new_value(Packet *pkt)
 
             /* def_idx is the index of the producer */
             def_opcode = pkt->insn[def_idx].opcode;
-            reginfo = opcode_reginfo[def_opcode];
-            destletters = "dexy";
-            for (j = 0; (letter = destletters[j]) != 0; j++) {
-                dststr = strchr(reginfo, letter);
-                if (dststr != NULL) {
-                    break;
-                }
-            }
-            if ((dststr == NULL)  && GET_ATTRIB(def_opcode, A_CVI_GATHER)) {
+            if ((pkt->insn[def_idx].dest_idx == -1)  &&
+                GET_ATTRIB(def_opcode, A_CVI_GATHER)) {
                 pkt->insn[i].regno[use_regidx] = def_oreg;
                 pkt->insn[i].new_value_producer_slot = pkt->insn[def_idx].slot;
             } else {
-                if (dststr == NULL) {
+                if (pkt->insn[def_idx].dest_idx == -1) {
                     /* still not there, we have a bad packet */
                     g_assert_not_reached();
                 }
-                g_assert(pkt->insn[def_idx].dest_idx != -1 &&
-                         pkt->insn[def_idx].dest_idx == dststr - reginfo);
-                int def_regnum = pkt->insn[def_idx].regno[dststr - reginfo];
+                int def_regnum =
+                    pkt->insn[def_idx].regno[pkt->insn[def_idx].dest_idx];
                 /* Now patch up the consumer with the register number */
                 pkt->insn[i].regno[use_regidx] = def_regnum ^ def_oreg;
-                /* special case for (Vx,Vy) */
-                dststr = strchr(reginfo, 'y');
-                if (def_oreg && strchr(reginfo, 'x') && dststr) {
-                    def_regnum = pkt->insn[def_idx].regno[dststr - reginfo];
-                    pkt->insn[i].regno[use_regidx] = def_regnum;
-                }
                 /*
                  * We need to remember who produces this value to later
                  * check if it was dynamically cancelled
diff --git a/target/hexagon/opcodes.c b/target/hexagon/opcodes.c
index 1f7f3def38..02ae9cf787 100644
--- a/target/hexagon/opcodes.c
+++ b/target/hexagon/opcodes.c
@@ -36,34 +36,6 @@ const char * const opcode_names[] = {
 #undef OPCODE
 };
 
-const char * const opcode_reginfo[] = {
-#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
-#define REGINFO(TAG, REGINFO, RREGS, WREGS) REGINFO,
-#include "op_regs_generated.h.inc"
-    NULL
-#undef REGINFO
-#undef IMMINFO
-};
-
-
-const char * const opcode_rregs[] = {
-#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
-#define REGINFO(TAG, REGINFO, RREGS, WREGS) RREGS,
-#include "op_regs_generated.h.inc"
-    NULL
-#undef REGINFO
-#undef IMMINFO
-};
-
-
-const char * const opcode_wregs[] = {
-#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
-#define REGINFO(TAG, REGINFO, RREGS, WREGS) WREGS,
-#include "op_regs_generated.h.inc"
-    NULL
-#undef REGINFO
-#undef IMMINFO
-};
 
 const char * const opcode_short_semantics[] = {
 #define DEF_SHORTCODE(TAG, SHORTCODE)              [TAG] = #SHORTCODE,
