Make concrete classes for individual call descriptors.

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 18dc9e1dddb7815cf0ca12a87453ff7ae4fb48de..e3301df9f664226ebbf93edb105f4be93515406f 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -31,14 +31,12 @@ static void InitializeArrayConstructorDescriptor(
       Runtime::kArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
-    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
-        CallDescriptorKey::ArrayConstructorConstantArgCountCall);
+    ArrayConstructorConstantArgCountDescriptor call_descriptor(isolate);
     descriptor->Initialize(major, call_descriptor, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
-    CallInterfaceDescriptor* call_descriptor =
-        isolate->call_descriptor(CallDescriptorKey::ArrayConstructorCall);
+    ArrayConstructorDescriptor call_descriptor(isolate);
     descriptor->Initialize(major, call_descriptor, eax, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
@@ -57,14 +55,12 @@ static void InitializeInternalArrayConstructorDescriptor(
       Runtime::kInternalArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
-    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
-        CallDescriptorKey::InternalArrayConstructorConstantArgCountCall);
+    InternalArrayConstructorConstantArgCountDescriptor call_descriptor(isolate);
     descriptor->Initialize(major, call_descriptor, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
-    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
-        CallDescriptorKey::InternalArrayConstructorCall);
+    InternalArrayConstructorDescriptor call_descriptor(isolate);
     descriptor->Initialize(major, call_descriptor, eax, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
@@ -664,7 +660,7 @@ void MathPowStub::Generate(MacroAssembler* masm) {
 
 void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
   Label miss;
-  Register receiver = LoadConvention::ReceiverRegister();
+  Register receiver = LoadDescriptor::ReceiverRegister();
 
   NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(masm, receiver, eax,
                                                           ebx, &miss);
@@ -4264,14 +4260,14 @@ void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
 
 
 void LoadICTrampolineStub::Generate(MacroAssembler* masm) {
-  EmitLoadTypeFeedbackVector(masm, FullVectorLoadConvention::VectorRegister());
+  EmitLoadTypeFeedbackVector(masm, VectorLoadICDescriptor::VectorRegister());
   VectorLoadStub stub(isolate(), state());
   __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
 void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) {
-  EmitLoadTypeFeedbackVector(masm, FullVectorLoadConvention::VectorRegister());
+  EmitLoadTypeFeedbackVector(masm, VectorLoadICDescriptor::VectorRegister());
   VectorKeyedLoadStub stub(isolate());
   __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET);
 }