[wasm] Get rid of extra wrappers when import another wasm export

test/mjsunit/wasm/wasm-constants.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 function bytes() {
   var buffer = new ArrayBuffer(arguments.length);
   var view = new Uint8Array(buffer);
   for (var i = 0; i < arguments.length; i++) {
@@ skipping 82 matching lines @@
 var kSig_i = makeSig([], [kAstI32]);
 var kSig_d = makeSig([], [kAstF64]);
 var kSig_i_i = makeSig([kAstI32], [kAstI32]);
 var kSig_i_ii = makeSig([kAstI32, kAstI32], [kAstI32]);
 var kSig_i_iii = makeSig([kAstI32, kAstI32, kAstI32], [kAstI32]);
 var kSig_d_dd = makeSig([kAstF64, kAstF64], [kAstF64]);
 var kSig_l_ll = makeSig([kAstI64, kAstI64], [kAstI64]);
 var kSig_i_dd = makeSig([kAstF64, kAstF64], [kAstI32]);
 var kSig_v_v = makeSig([], []);
 var kSig_i_v = makeSig([], [kAstI32]);
+var kSig_v_i = makeSig([kAstI32], []);
+var kSig_v_ii = makeSig([kAstI32, kAstI32], []);
+var kSig_v_iii = makeSig([kAstI32, kAstI32, kAstI32], []);
+var kSig_v_d = makeSig([kAstF64], []);
+var kSig_v_dd = makeSig([kAstF64, kAstF64], []);
 
 function makeSig(params, results) {
   return {params: params, results: results};
 }
 
 function makeSig_v_x(x) {
   return makeSig([x], []);
 }
 
 function makeSig_v_xx(x) {
@@ skipping 229 matching lines @@
       }
       threwException = false;
     } catch (e) {
       assertEquals("object", typeof e);
       assertEquals(kTrapMsgs[trap], e.message);
       // Success.
       return;
     }
     throw new MjsUnitAssertionError("Did not trap, expected: " + kTrapMsgs[trap]);
 }