Make context register implicit for CallInterfaceDescriptors

src/arm64/interface-descriptors-arm64.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_ARM64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 52 matching lines @@
 
 const Register MathPowIntegerDescriptor::exponent() { return x12; }
 
 
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return x0; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return x3; }
 
 
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x2: function info
-  Register registers[] = {cp, x2};
+  Register registers[] = {x2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastNewContextDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: function
-  Register registers[] = {cp, x1};
+  Register registers[] = {x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ToNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x0: value
-  Register registers[] = {cp, x0};
+  Register registers[] = {x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void NumberToStringDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x0: value
-  Register registers[] = {cp, x0};
+  Register registers[] = {x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, x3};
+  Register registers[] = {x3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x3: array literals array
   // x2: array literal index
   // x1: constant elements
-  Register registers[] = {cp, x3, x2, x1};
+  Register registers[] = {x3, x2, x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x3: object literals array
   // x2: object literal index
   // x1: constant properties
   // x0: object literal flags
-  Register registers[] = {cp, x3, x2, x1, x0};
+  Register registers[] = {x3, x2, x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x2: feedback vector
   // x3: call feedback slot
-  Register registers[] = {cp, x2, x3};
+  Register registers[] = {x2, x3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CreateWeakCellDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x2: feedback vector
   // x3: call feedback slot
   // x1: tagged value to put in the weak cell
-  Register registers[] = {cp, x2, x3, x1};
+  Register registers[] = {x2, x3, x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void StoreArrayLiteralElementDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, x3, x0};
+  Register registers[] = {x3, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x1  function    the function to call
-  Register registers[] = {cp, x1};
+  Register registers[] = {x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, x1, x3};
+  Register registers[] = {x1, x3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, x1, x3, x2};
+  Register registers[] = {x1, x3, x2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallConstructDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x0 : number of arguments
   // x1 : the function to call
   // x2 : feedback vector
   // x3 : slot in feedback vector (smi) (if r2 is not the megamorphic symbol)
   // 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[] = {cp, x0, x1, x2};
+  Register registers[] = {x0, x1, x2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void RegExpConstructResultDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x2: length
   // x1: index (of last match)
   // x0: string
-  Register registers[] = {cp, x2, x1, x0};
+  Register registers[] = {x2, x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void TransitionElementsKindDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x0: value (js_array)
   // x1: to_map
-  Register registers[] = {cp, x0, x1};
+  Register registers[] = {x0, x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
-  Register registers[] = {cp};
-  data->InitializePlatformSpecific(arraysize(registers), registers, nullptr);
+  data->InitializePlatformSpecific(0, nullptr, nullptr);
 }
 
 
 void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: function
   // x2: allocation site with elements kind
   // x0: number of arguments to the constructor function
-  Register registers[] = {cp, x1, x2};
+  Register registers[] = {x1, x2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, x1, x2, x0};
+  Register registers[] = {x1, x2, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void InternalArrayConstructorConstantArgCountDescriptor::
     InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: constructor function
   // x0: number of arguments to the constructor function
-  Register registers[] = {cp, x1};
+  Register registers[] = {x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, x1, x0};
+  Register registers[] = {x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: left operand
   // x0: right operand
-  Register registers[] = {cp, x1, x0};
+  Register registers[] = {x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CompareNilDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x0: value to compare
-  Register registers[] = {cp, x0};
+  Register registers[] = {x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ToBooleanDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x0: value
-  Register registers[] = {cp, x0};
+  Register registers[] = {x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: left operand
   // x0: right operand
-  Register registers[] = {cp, x1, x0};
+  Register registers[] = {x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x2: allocation site
   // x1: left operand
   // x0: right operand
-  Register registers[] = {cp, x2, x1, x0};
+  Register registers[] = {x2, x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void StringAddDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // cp: context
   // x1: left operand
   // x0: right operand
-  Register registers[] = {cp, x1, x0};
+  Register registers[] = {x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void KeyedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor noInlineDescriptor =
       PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x2,  // key
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &noInlineDescriptor);
 }
 
 
 void NamedDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor noInlineDescriptor =
       PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x2,  // name
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &noInlineDescriptor);
 }
 
 
 void CallHandlerDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor default_descriptor =
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x0,  // receiver
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &default_descriptor);
 }
 
 
 void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor default_descriptor =
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x1,  // JSFunction
       x0,  // actual number of arguments
       x2,  // expected number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &default_descriptor);
 }
 
 
 void ApiFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor default_descriptor =
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x0,  // callee
       x4,  // call_data
       x2,  // holder
       x1,  // api_function_address
       x3,  // actual number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &default_descriptor);
 }
 
 
 void ApiAccessorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   static PlatformInterfaceDescriptor default_descriptor =
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       x0,  // callee
       x4,  // call_data
       x2,  // holder
       x1,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
                                    &default_descriptor);
 }
 
 
 void MathRoundVariantDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       x1,  // math rounding function
       x3,  // vector slot id
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64