X87: Make context register implicit for CallInterfaceDescriptors

src/x87/interface-descriptors-x87.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_X87
 
 #include "src/interface-descriptors.h"
 
@@ skipping 47 matching lines @@
   return MathPowTaggedDescriptor::exponent();
 }
 
 
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return eax; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return ebx; }
 
 
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ebx};
+  Register registers[] = {ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void FastNewContextDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edi};
+  Register registers[] = {edi};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void ToNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // ToNumberStub invokes a function, and therefore needs a context.
-  Register registers[] = {esi, eax};
+  Register registers[] = {eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void NumberToStringDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax};
+  Register registers[] = {eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ebx};
+  Register registers[] = {ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax, ebx, ecx};
+  Register registers[] = {eax, ebx, ecx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax, ebx, ecx, edx};
+  Register registers[] = {eax, ebx, ecx, edx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ebx, edx};
+  Register registers[] = {ebx, edx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CreateWeakCellDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ebx, edx, edi};
+  Register registers[] = {ebx, edx, edi};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void StoreArrayLiteralElementDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ecx, eax};
+  Register registers[] = {ecx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void CallFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edi};
+  Register registers[] = {edi};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edi, edx};
+  Register registers[] = {edi, edx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edi, edx, ebx};
+  Register registers[] = {edi, edx, ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallConstructDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // eax : number of arguments
   // ebx : feedback vector
   // edx : (only if ebx is not the megamorphic symbol) slot in feedback
   //       vector (Smi)
   // edi : constructor function
   // TODO(turbofan): So far we don't gather type feedback and hence skip the
   // slot parameter, but ArrayConstructStub needs the vector to be undefined.
-  Register registers[] = {esi, eax, edi, ebx};
+  Register registers[] = {eax, edi, ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void RegExpConstructResultDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ecx, ebx, eax};
+  Register registers[] = {ecx, ebx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void TransitionElementsKindDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax, ebx};
+  Register registers[] = {eax, ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
-  // esi -- context
-  Register registers[] = {esi};
-  data->InitializePlatformSpecific(arraysize(registers), registers, nullptr);
+  data->InitializePlatformSpecific(0, nullptr, nullptr);
 }
 
 
 void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
   // eax -- number of arguments
   // edi -- function
   // ebx -- allocation site with elements kind
-  Register registers[] = {esi, edi, ebx};
+  Register registers[] = {edi, ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void ArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {esi, edi, ebx, eax};
+  Register registers[] = {edi, ebx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void InternalArrayConstructorConstantArgCountDescriptor::
     InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
   // register state
   // eax -- number of arguments
   // edi -- function
-  Register registers[] = {esi, edi};
+  Register registers[] = {edi};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {esi, edi, eax};
+  Register registers[] = {edi, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edx, eax};
+  Register registers[] = {edx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void CompareNilDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax};
+  Register registers[] = {eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void ToBooleanDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, eax};
+  Register registers[] = {eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edx, eax};
+  Register registers[] = {edx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, ecx, edx, eax};
+  Register registers[] = {ecx, edx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void StringAddDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {esi, edx, eax};
+  Register registers[] = {edx, eax};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void KeyedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       ecx,  // key
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void NamedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       ecx,  // name
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallHandlerDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       edx,  // name
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       edi,  // JSFunction
       eax,  // actual number of arguments
       ebx,  // expected number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ApiFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       edi,  // callee
       ebx,  // call_data
       ecx,  // holder
       edx,  // api_function_address
       eax,  // actual number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ApiAccessorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       edi,  // callee
       ebx,  // call_data
       ecx,  // holder
       edx,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void MathRoundVariantDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      esi,  // context
       edi,  // math rounding function
       edx,  // vector slot id
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87