py: Remove mp_load_const_str and replace uses with inlined version.

py/emitnative.c

@@ -167,7 +167,6 @@
 STATIC byte mp_f_n_args[MP_F_NUMBER_OF] = {
     [MP_F_CONVERT_OBJ_TO_NATIVE] = 2,
     [MP_F_CONVERT_NATIVE_TO_OBJ] = 2,
-    [MP_F_LOAD_CONST_STR] = 1,
     [MP_F_LOAD_CONST_BYTES] = 1,
     [MP_F_LOAD_NAME] = 1,
     [MP_F_LOAD_GLOBAL] = 1,
@@ -1311,10 +1310,10 @@ STATIC void emit_native_load_const_str(emit_t *emit, qstr qst, bool bytes) {
     {
         if (bytes) {
             emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_BYTES, qst, REG_ARG_1);
+            emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
         } else {
-            emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_STR, qst, REG_ARG_1);
+            emit_post_push_imm(emit, VTYPE_PYOBJ, (mp_uint_t)MP_OBJ_NEW_QSTR(qst));
         }
-        emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
     }
 }
 

py/nativeglue.c

@@ -92,7 +92,6 @@ void mp_native_raise(mp_obj_t o) {
 void *const mp_fun_table[MP_F_NUMBER_OF] = {
     mp_convert_obj_to_native,
     mp_convert_native_to_obj,
-    mp_load_const_str,
     mp_load_const_bytes,
     mp_load_name,
     mp_load_global,

py/runtime.c

@@ -104,11 +104,6 @@ void mp_deinit(void) {
 #endif
 }
 
-mp_obj_t mp_load_const_str(qstr qst) {
-    DEBUG_OP_printf("load '%s'\n", qstr_str(qst));
-    return MP_OBJ_NEW_QSTR(qst);
-}
-
 mp_obj_t mp_load_const_bytes(qstr qst) {
     DEBUG_OP_printf("load b'%s'\n", qstr_str(qst));
     mp_uint_t len;

py/runtime.h

@@ -90,7 +90,6 @@ mp_obj_t mp_binary_op(mp_uint_t op, mp_obj_t lhs, mp_obj_t rhs);
 
 mp_obj_t mp_load_const_int(qstr qst);
 mp_obj_t mp_load_const_dec(qstr qst);
-mp_obj_t mp_load_const_str(qstr qst);
 mp_obj_t mp_load_const_bytes(qstr qst);
 
 mp_obj_t mp_call_function_0(mp_obj_t fun);

py/runtime0.h

@@ -109,7 +109,6 @@ typedef enum {
 typedef enum {
     MP_F_CONVERT_OBJ_TO_NATIVE = 0,
     MP_F_CONVERT_NATIVE_TO_OBJ,
-    MP_F_LOAD_CONST_STR,
     MP_F_LOAD_CONST_BYTES,
     MP_F_LOAD_NAME,
     MP_F_LOAD_GLOBAL,

py/vm.c

@@ -213,7 +213,7 @@ dispatch_loop:
 
                 ENTRY(MP_BC_LOAD_CONST_STRING): {
                     DECODE_QSTR;
-                    PUSH(mp_load_const_str(qst));
+                    PUSH(MP_OBJ_NEW_QSTR(qst));
                     DISPATCH();
                 }