diff --git a/tcg/tcg.c b/tcg/tcg.c
index 302f7025e7..c4e866e9c3 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -138,9 +138,6 @@ static void tcg_out_mb(TCGContext *s, unsigned bar);
 static void tcg_out_br(TCGContext *s, TCGLabel *l);
 static void tcg_out_set_carry(TCGContext *s);
 static void tcg_out_set_borrow(TCGContext *s);
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS]);
 #if TCG_TARGET_MAYBE_vec
 static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
                             TCGReg dst, TCGReg src);
@@ -5920,12 +5917,9 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCGOp *op)
         break;
 
     default:
-        if (def->flags & TCG_OPF_VECTOR) {
-            tcg_out_vec_op(s, op->opc, type - TCG_TYPE_V64,
-                           TCGOP_VECE(op), new_args, const_args);
-        } else {
-            tcg_out_op(s, op->opc, type, new_args, const_args);
-        }
+        tcg_debug_assert(def->flags & TCG_OPF_VECTOR);
+        tcg_out_vec_op(s, op->opc, type - TCG_TYPE_V64,
+                       TCGOP_VECE(op), new_args, const_args);
         break;
     }
 
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index be1ca74bc4..e56dc135b6 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -2897,13 +2897,6 @@ static const TCGOutOpStore outop_st = {
     .out_r = tcg_out_st,
 };
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType ext,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
                            unsigned vecl, unsigned vece,
                            const TCGArg args[TCG_MAX_OP_ARGS],
diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 014a441420..447e43583e 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -2640,13 +2640,6 @@ static const TCGOutOpStore outop_st = {
     .out_r = tcg_out_st,
 };
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static TCGConstraintSetIndex
 tcg_target_op_def(TCGOpcode op, TCGType type, unsigned flags)
 {
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 9f294f28ed..09fce27b06 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -3602,13 +3602,6 @@ static const TCGOutOpStore outop_st = {
     .out_i = tgen_st_i,
 };
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static int const umin_insn[4] = {
     OPC_PMINUB, OPC_PMINUW, OPC_PMINUD, OPC_VPMINUQ
 };
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index c74ddee644..e5580d69a8 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -2042,13 +2042,6 @@ static const TCGOutOpStore outop_st = {
     .out_r = tcg_out_st,
 };
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
                             TCGReg rd, TCGReg rs)
 {
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 1f12500344..2c0457e588 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -2444,13 +2444,6 @@ static const TCGOutOpStore outop_st = {
 };
 
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static TCGConstraintSetIndex
 tcg_target_op_def(TCGOpcode op, TCGType type, unsigned flags)
 {
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 824cced94a..2e94778104 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -3828,13 +3828,6 @@ static const TCGOutOpStore outop_st = {
 };
 
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece)
 {
     switch (opc) {
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index eca1283742..f9417d15f7 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -2642,13 +2642,6 @@ static const TCGOutOpStore outop_st = {
 };
 
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
                            unsigned vecl, unsigned vece,
                            const TCGArg args[TCG_MAX_OP_ARGS],
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index a316c8de41..7ca0071f24 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -3160,13 +3160,6 @@ static const TCGOutOpStore outop_st = {
 };
 
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
                             TCGReg dst, TCGReg src)
 {
diff --git a/tcg/sparc64/tcg-target.c.inc b/tcg/sparc64/tcg-target.c.inc
index d1dd0fa33c..83167aa29d 100644
--- a/tcg/sparc64/tcg-target.c.inc
+++ b/tcg/sparc64/tcg-target.c.inc
@@ -2074,13 +2074,6 @@ static const TCGOutOpStore outop_st = {
 };
 
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static TCGConstraintSetIndex
 tcg_target_op_def(TCGOpcode op, TCGType type, unsigned flags)
 {
diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc
index 50e205211d..35c66a4836 100644
--- a/tcg/tci/tcg-target.c.inc
+++ b/tcg/tci/tcg-target.c.inc
@@ -1235,13 +1235,6 @@ static const TCGOutOpQemuLdSt2 outop_qemu_st2 = {
         TCG_TARGET_REG_BITS == 64 ? NULL : tgen_qemu_st2,
 };
 
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
-{
-    g_assert_not_reached();
-}
-
 static void tcg_out_st(TCGContext *s, TCGType type, TCGReg val, TCGReg base,
                        intptr_t offset)
 {
