Make context register implicit for CallInterfaceDescriptors

src/arm/interface-descriptors-arm.cc

Index: src/arm/interface-descriptors-arm.cc
diff --git a/src/arm/interface-descriptors-arm.cc b/src/arm/interface-descriptors-arm.cc
index 665964f89671245dc23e007dfe30cb70b6eb3b85..67f65f5cb39b9f97afb18426a8cc203b35061e3b 100644
--- a/src/arm/interface-descriptors-arm.cc
+++ b/src/arm/interface-descriptors-arm.cc
@@ -64,91 +64,91 @@ const Register GrowArrayElementsDescriptor::KeyRegister() { return r3; }
 
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r2};
+  Register registers[] = {r2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastNewContextDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1};
+  Register registers[] = {r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ToNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r0};
+  Register registers[] = {r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void NumberToStringDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r0};
+  Register registers[] = {r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3};
+  Register registers[] = {r3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3, r2, r1};
+  Register registers[] = {r3, r2, r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3, r2, r1, r0};
+  Register registers[] = {r3, r2, r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r2, r3};
+  Register registers[] = {r2, r3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CreateWeakCellDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r2, r3, r1};
+  Register registers[] = {r2, r3, r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void StoreArrayLiteralElementDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3, r0};
+  Register registers[] = {r3, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1};
+  Register registers[] = {r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1, r3};
+  Register registers[] = {r1, r3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1, r3, r2};
+  Register registers[] = {r1, r3, r2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ -162,42 +162,38 @@ void CallConstructDescriptor::InitializePlatformSpecific(
   //      vector (Smi)
   // 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, r0, r1, r2};
+  Register registers[] = {r0, r1, r2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void RegExpConstructResultDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r2, r1, r0};
+  Register registers[] = {r2, r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void TransitionElementsKindDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r0, r1};
+  Register registers[] = {r0, r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // register state
-  // cp -- context
-  Register registers[] = {cp};
-  data->InitializePlatformSpecific(arraysize(registers), registers, nullptr);
+  data->InitializePlatformSpecific(0, nullptr, nullptr);
 }
 
 
 void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
-  // cp -- context
   // r0 -- number of arguments
   // r1 -- function
   // r2 -- allocation site with elements kind
-  Register registers[] = {cp, r1, r2};
+  Register registers[] = {r1, r2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ -205,7 +201,7 @@ void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
 void ArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, r1, r2, r0};
+  Register registers[] = {r1, r2, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ -213,10 +209,9 @@ void ArrayConstructorDescriptor::InitializePlatformSpecific(
 void InternalArrayConstructorConstantArgCountDescriptor::
     InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
   // register state
-  // cp -- context
   // r0 -- number of arguments
   // r1 -- constructor function
-  Register registers[] = {cp, r1};
+  Register registers[] = {r1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ -224,49 +219,49 @@ void InternalArrayConstructorConstantArgCountDescriptor::
 void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, r1, r0};
+  Register registers[] = {r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1, r0};
+  Register registers[] = {r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CompareNilDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r0};
+  Register registers[] = {r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void ToBooleanDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r0};
+  Register registers[] = {r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1, r0};
+  Register registers[] = {r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r2, r1, r0};
+  Register registers[] = {r2, r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void StringAddDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r1, r0};
+  Register registers[] = {r1, r0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ -277,7 +272,6 @@ void KeyedDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r2,  // key
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
@@ -291,7 +285,6 @@ void NamedDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(NEVER_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r2,  // name
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
@@ -305,7 +298,6 @@ void CallHandlerDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r0,  // receiver
   };
   data->InitializePlatformSpecific(arraysize(registers), registers,
@@ -319,7 +311,6 @@ void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r1,  // JSFunction
       r0,  // actual number of arguments
       r2,  // expected number of arguments
@@ -335,7 +326,6 @@ void ApiFunctionDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r0,  // callee
       r4,  // call_data
       r2,  // holder
@@ -353,7 +343,6 @@ void ApiAccessorDescriptor::InitializePlatformSpecific(
       PlatformInterfaceDescriptor(CAN_INLINE_TARGET_ADDRESS);
 
   Register registers[] = {
-      cp,  // context
       r0,  // callee
       r4,  // call_data
       r2,  // holder
@@ -367,7 +356,6 @@ void ApiAccessorDescriptor::InitializePlatformSpecific(
 void MathRoundVariantDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       r1,  // math rounding function
       r3,  // vector slot id
   };