[turbofan] Fix usage of ThisFunction parameter in OSR.

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/machine-type.h"
@@ skipping 167 matching lines @@
   Linkage(Isolate* isolate, Zone* zone, CallDescriptor* incoming)
       : isolate_(isolate), zone_(zone), incoming_(incoming) {}
 
   static CallDescriptor* ComputeIncoming(Zone* zone, CompilationInfo* info);
 
   // The call descriptor for this compilation unit describes the locations
   // of incoming parameters and the outgoing return value(s).
   CallDescriptor* GetIncomingDescriptor() const { return incoming_; }
   CallDescriptor* GetJSCallDescriptor(int parameter_count,
                                       CallDescriptor::Flags flags) const;
-  static CallDescriptor* GetJSCallDescriptor(Zone* zone, int parameter_count,
+  static CallDescriptor* GetJSCallDescriptor(Zone* zone, bool is_osr,
+                                             int parameter_count,
                                              CallDescriptor::Flags flags);
   CallDescriptor* GetRuntimeCallDescriptor(
       Runtime::FunctionId function, int parameter_count,
       Operator::Properties properties) const;
   static CallDescriptor* GetRuntimeCallDescriptor(
       Zone* zone, Runtime::FunctionId function, int parameter_count,
       Operator::Properties properties);
 
   CallDescriptor* GetStubCallDescriptor(
       const CallInterfaceDescriptor& descriptor, int stack_parameter_count = 0,
@@ skipping 34 matching lines @@
   // architecture-specific. Negative spill slots indicate arguments on the
   // caller's frame. The {extra} parameter indicates an additional offset from
   // the frame offset, e.g. to index into part of a double slot.
   FrameOffset GetFrameOffset(int spill_slot, Frame* frame, int extra = 0) const;
 
   static bool NeedsFrameState(Runtime::FunctionId function);
 
   // Get the location where an incoming OSR value is stored.
   LinkageLocation GetOsrValueLocation(int index) const;
 
+  // A special parameter index for JSCalls that represents the closure.
+  static const int kJSFunctionCallClosureParamIndex = -1;
+
  private:
   Isolate* isolate_;
   Zone* const zone_;
   CallDescriptor* const incoming_;
 
   DISALLOW_COPY_AND_ASSIGN(Linkage);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LINKAGE_H_