[wasm] remove faux code objects

src/compiler/linkage.h

 // Copyright 2014 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.
 
 #ifndef V8_COMPILER_LINKAGE_H_
 #define V8_COMPILER_LINKAGE_H_
 
 #include "src/base/flags.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/operator.h"
@@ skipping 126 matching lines @@
 };
 
 typedef Signature<LinkageLocation> LocationSignature;
 
 // Describes a call to various parts of the compiler. Every call has the notion
 // of a "target", which is the first input to the call.
 class CallDescriptor final : public ZoneObject {
  public:
   // Describes the kind of this call, which determines the target.
   enum Kind {
-    kCallCodeObject,  // target is a Code object
-    kCallJSFunction,  // target is a JSFunction object
-    kCallAddress      // target is a machine pointer
+    kCallCodeObject,    // target is a Code object
+    kCallWasmFunction,  // target is a Wasm function identified by its index
+    kCallJSFunction,    // target is a JSFunction object
+    kCallAddress        // target is a machine pointer
   };
 
   enum Flag {
     kNoFlags = 0u,
     kNeedsFrameState = 1u << 0,
     kHasExceptionHandler = 1u << 1,
     kHasLocalCatchHandler = 1u << 2,
     kSupportsTailCalls = 1u << 3,
     kCanUseRoots = 1u << 4,
     // (arm64 only) native stack should be used for arguments.
@@ skipping 243 matching lines @@
   CallDescriptor* const incoming_;
 
   DISALLOW_COPY_AND_ASSIGN(Linkage);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LINKAGE_H_