diff --git a/tcg/tcg.c b/tcg/tcg.c
index 9b7df71e7a..257479337c 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -104,6 +104,7 @@ static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
 static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg);
 static void tcg_out_movi(TCGContext *s, TCGType type,
                          TCGReg ret, tcg_target_long arg);
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg);
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS]);
@@ -4718,6 +4719,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb, target_ulong pc_start)
         case INDEX_op_call:
             tcg_reg_alloc_call(s, op);
             break;
+        case INDEX_op_exit_tb:
+            tcg_out_exit_tb(s, op->args[0]);
+            break;
         case INDEX_op_dup2_vec:
             if (tcg_reg_alloc_dup2(s, op)) {
                 break;
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index ad1816e32d..501b77c215 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -1887,6 +1887,17 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
 
 static const tcg_insn_unit *tb_ret_addr;
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    /* Reuse the zeroing that exists for goto_ptr.  */
+    if (a0 == 0) {
+        tcg_out_goto_long(s, tcg_code_gen_epilogue);
+    } else {
+        tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_X0, a0);
+        tcg_out_goto_long(s, tb_ret_addr);
+    }
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1906,16 +1917,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
 #define REG0(I)  (const_args[I] ? TCG_REG_XZR : (TCGReg)args[I])
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        /* Reuse the zeroing that exists for goto_ptr.  */
-        if (a0 == 0) {
-            tcg_out_goto_long(s, tcg_code_gen_epilogue);
-        } else {
-            tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_X0, a0);
-            tcg_out_goto_long(s, tb_ret_addr);
-        }
-        break;
-
     case INDEX_op_goto_tb:
         tcg_debug_assert(s->tb_jmp_insn_offset != NULL);
         /*
@@ -2305,6 +2306,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         g_assert_not_reached();
     }
diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 9245ea86d0..799cf13536 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -1933,6 +1933,12 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
 
 static void tcg_out_epilogue(TCGContext *s);
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
+{
+    tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, arg);
+    tcg_out_epilogue(s);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1941,10 +1947,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     int c;
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, args[0]);
-        tcg_out_epilogue(s);
-        break;
     case INDEX_op_goto_tb:
         {
             /* Indirect jump method */
@@ -2256,6 +2258,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
 
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 58bd5873f5..feb257db01 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -2347,6 +2347,17 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
 #endif
 }
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    /* Reuse the zeroing that exists for goto_ptr.  */
+    if (a0 == 0) {
+        tcg_out_jmp(s, tcg_code_gen_epilogue);
+    } else {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_EAX, a0);
+        tcg_out_jmp(s, tb_ret_addr);
+    }
+}
+
 static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
                               const TCGArg args[TCG_MAX_OP_ARGS],
                               const int const_args[TCG_MAX_OP_ARGS])
@@ -2371,15 +2382,6 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
     const_a2 = const_args[2];
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        /* Reuse the zeroing that exists for goto_ptr.  */
-        if (a0 == 0) {
-            tcg_out_jmp(s, tcg_code_gen_epilogue);
-        } else {
-            tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_EAX, a0);
-            tcg_out_jmp(s, tb_ret_addr);
-        }
-        break;
     case INDEX_op_goto_tb:
         if (s->tb_jmp_insn_offset) {
             /* direct jump method */
@@ -2794,6 +2796,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index c9e99e8ec3..29e4bfcb49 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -1068,6 +1068,17 @@ void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
 
 static const tcg_insn_unit *tb_ret_addr;
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    /* Reuse the zeroing that exists for goto_ptr.  */
+    if (a0 == 0) {
+        tcg_out_call_int(s, tcg_code_gen_epilogue, true);
+    } else {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
+        tcg_out_call_int(s, tb_ret_addr, true);
+    }
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1078,16 +1089,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     int c2 = const_args[2];
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        /* Reuse the zeroing that exists for goto_ptr.  */
-        if (a0 == 0) {
-            tcg_out_call_int(s, tcg_code_gen_epilogue, true);
-        } else {
-            tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
-            tcg_out_call_int(s, tb_ret_addr, true);
-        }
-        break;
-
     case INDEX_op_goto_tb:
         tcg_debug_assert(s->tb_jmp_insn_offset != NULL);
         /*
@@ -1500,6 +1501,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         g_assert_not_reached();
     }
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 292e490b5c..52881abd35 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -1951,6 +1951,21 @@ static void tcg_out_clz(TCGContext *s, MIPSInsn opcv2, MIPSInsn opcv6,
     }
 }
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    TCGReg b0 = TCG_REG_ZERO;
+
+    if (a0 & ~0xffff) {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, a0 & ~0xffff);
+        b0 = TCG_REG_V0;
+    }
+    if (!tcg_out_opc_jmp(s, OPC_J, tb_ret_addr)) {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, (uintptr_t)tb_ret_addr);
+        tcg_out_opc_reg(s, OPC_JR, 0, TCG_TMP0, 0);
+    }
+    tcg_out_opc_imm(s, OPC_ORI, TCG_REG_V0, b0, a0 & 0xffff);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1970,23 +1985,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     c2 = const_args[2];
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        {
-            TCGReg b0 = TCG_REG_ZERO;
-
-            a0 = (intptr_t)a0;
-            if (a0 & ~0xffff) {
-                tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, a0 & ~0xffff);
-                b0 = TCG_REG_V0;
-            }
-            if (!tcg_out_opc_jmp(s, OPC_J, tb_ret_addr)) {
-                tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0,
-                             (uintptr_t)tb_ret_addr);
-                tcg_out_opc_reg(s, OPC_JR, 0, TCG_TMP0, 0);
-            }
-            tcg_out_opc_imm(s, OPC_ORI, TCG_REG_V0, b0, a0 & 0xffff);
-        }
-        break;
     case INDEX_op_goto_tb:
         /* indirect jump method */
         tcg_debug_assert(s->tb_jmp_insn_offset == 0);
@@ -2403,6 +2401,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index e0621463f6..a95e4001d3 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2616,6 +2616,12 @@ static void tcg_target_qemu_prologue(TCGContext *s)
     tcg_out32(s, BCLR | BO_ALWAYS);
 }
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
+{
+    tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, arg);
+    tcg_out_b(s, 0, tcg_code_gen_epilogue);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -2623,10 +2629,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     TCGArg a0, a1, a2;
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]);
-        tcg_out_b(s, 0, tcg_code_gen_epilogue);
-        break;
     case INDEX_op_goto_tb:
         if (s->tb_jmp_insn_offset) {
             /* Direct jump. */
@@ -3185,6 +3187,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:   /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:      /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:   /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index f741e0582d..9b42cb4b2e 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -1289,6 +1289,17 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is_64)
 
 static const tcg_insn_unit *tb_ret_addr;
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    /* Reuse the zeroing that exists for goto_ptr.  */
+    if (a0 == 0) {
+        tcg_out_call_int(s, tcg_code_gen_epilogue, true);
+    } else {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
+        tcg_out_call_int(s, tb_ret_addr, true);
+    }
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1299,16 +1310,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     int c2 = const_args[2];
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        /* Reuse the zeroing that exists for goto_ptr.  */
-        if (a0 == 0) {
-            tcg_out_call_int(s, tcg_code_gen_epilogue, true);
-        } else {
-            tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
-            tcg_out_call_int(s, tb_ret_addr, true);
-        }
-        break;
-
     case INDEX_op_goto_tb:
         assert(s->tb_jmp_insn_offset == 0);
         /* indirect jump method */
@@ -1617,6 +1618,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         g_assert_not_reached();
     }
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index 2b38fd991d..48a0c3e3c0 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -1944,6 +1944,17 @@ static void tcg_out_qemu_st(TCGContext* s, TCGReg data_reg, TCGReg addr_reg,
 #endif
 }
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    /* Reuse the zeroing that exists for goto_ptr.  */
+    if (a0 == 0) {
+        tgen_gotoi(s, S390_CC_ALWAYS, tcg_code_gen_epilogue);
+    } else {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, a0);
+        tgen_gotoi(s, S390_CC_ALWAYS, tb_ret_addr);
+    }
+}
+
 # define OP_32_64(x) \
         case glue(glue(INDEX_op_,x),_i32): \
         case glue(glue(INDEX_op_,x),_i64)
@@ -1956,17 +1967,6 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
     TCGArg a0, a1, a2;
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        /* Reuse the zeroing that exists for goto_ptr.  */
-        a0 = args[0];
-        if (a0 == 0) {
-            tgen_gotoi(s, S390_CC_ALWAYS, tcg_code_gen_epilogue);
-        } else {
-            tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, a0);
-            tgen_gotoi(s, S390_CC_ALWAYS, tb_ret_addr);
-        }
-        break;
-
     case INDEX_op_goto_tb:
         a0 = args[0];
         /*
@@ -2619,6 +2619,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/sparc64/tcg-target.c.inc b/tcg/sparc64/tcg-target.c.inc
index eb913f33c8..d2d8b46815 100644
--- a/tcg/sparc64/tcg-target.c.inc
+++ b/tcg/sparc64/tcg-target.c.inc
@@ -1428,6 +1428,26 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data, TCGReg addr,
 #endif /* CONFIG_SOFTMMU */
 }
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
+{
+    if (check_fit_ptr(a0, 13)) {
+        tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
+        tcg_out_movi_imm13(s, TCG_REG_O0, a0);
+        return;
+    } else if (USE_REG_TB) {
+        intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0);
+        if (check_fit_ptr(tb_diff, 13)) {
+            tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
+            /* Note that TCG_REG_TB has been unwound to O1.  */
+            tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD);
+            return;
+        }
+    }
+    tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff);
+    tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
+    tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1442,24 +1462,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     c2 = const_args[2];
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        if (check_fit_ptr(a0, 13)) {
-            tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
-            tcg_out_movi_imm13(s, TCG_REG_O0, a0);
-            break;
-        } else if (USE_REG_TB) {
-            intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0);
-            if (check_fit_ptr(tb_diff, 13)) {
-                tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
-                /* Note that TCG_REG_TB has been unwound to O1.  */
-                tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD);
-                break;
-            }
-        }
-        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff);
-        tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
-        tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR);
-        break;
     case INDEX_op_goto_tb:
         if (s->tb_jmp_insn_offset) {
             /* direct jump method */
@@ -1716,6 +1718,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc
index d36a7ebdd1..2f3bcce3a7 100644
--- a/tcg/tci/tcg-target.c.inc
+++ b/tcg/tci/tcg-target.c.inc
@@ -590,6 +590,11 @@ static void tcg_out_call(TCGContext *s, const tcg_insn_unit *func,
 # define CASE_64(x)
 #endif
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
+{
+    tcg_out_op_p(s, INDEX_op_exit_tb, (void *)arg);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -597,10 +602,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     TCGOpcode exts;
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        tcg_out_op_p(s, opc, (void *)args[0]);
-        break;
-
     case INDEX_op_goto_tb:
         tcg_debug_assert(s->tb_jmp_insn_offset == 0);
         /* indirect jump method. */
@@ -779,6 +780,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }
