StubCallInterfaceDescriptor takes a context register.

src/ia32/lithium-ia32.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/hydrogen-osr.h"
 #include "src/ia32/lithium-codegen-ia32.h"
@@ skipping 1107 matching lines @@
   LOperand* function = UseFixed(instr->function(), edi);
 
   LCallJSFunction* result = new(zone()) LCallJSFunction(function);
 
   return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
 }
 
 
 LInstruction* LChunkBuilder::DoCallWithDescriptor(
     HCallWithDescriptor* instr) {
-  const CallInterfaceDescriptor* descriptor = instr->descriptor();
-
+  const InterfaceDescriptor* descriptor = instr->descriptor();
   LOperand* target = UseRegisterOrConstantAtStart(instr->target());
   ZoneList<LOperand*> ops(instr->OperandCount(), zone());
   ops.Add(target, zone());
   for (int i = 1; i < instr->OperandCount(); i++) {
     LOperand* op = UseFixed(instr->OperandAt(i),
         descriptor->GetParameterRegister(i - 1));
     ops.Add(op, zone());
   }
 
   LCallWithDescriptor* result = new(zone()) LCallWithDescriptor(
@@ skipping 1529 matching lines @@
   LOperand* function = UseRegisterAtStart(instr->function());
   LAllocateBlockContext* result =
       new(zone()) LAllocateBlockContext(context, function);
   return MarkAsCall(DefineFixed(result, esi), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32