MIPS: Multiple stubs can point to the same calling convention.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index e2b8f927e62844ef884e3ee5da1c6fbf27c305e5..eefcdc2c3b29ca0ae1d53503e49a25c687e99ee8 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -19,136 +19,23 @@ namespace v8 {
 namespace internal {
 
 
-void FastNewClosureStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a2 };
-  descriptor->Initialize(
-      MajorKey(), arraysize(registers), registers,
-      Runtime::FunctionForId(Runtime::kNewClosureFromStubFailure)->entry);
-}
-
-
-void FastNewContextStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a1 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers);
-}
-
-
-void ToNumberStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers);
-}
-
-
-void NumberToStringStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a0 };
-  descriptor->Initialize(
-      MajorKey(), arraysize(registers), registers,
-      Runtime::FunctionForId(Runtime::kNumberToStringRT)->entry);
-}
-
-
-void FastCloneShallowArrayStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a3, a2, a1 };
-  Representation representations[] = {
-    Representation::Tagged(),
-    Representation::Tagged(),
-    Representation::Smi(),
-    Representation::Tagged() };
-  descriptor->Initialize(
-      MajorKey(), arraysize(registers), registers,
-      Runtime::FunctionForId(Runtime::kCreateArrayLiteralStubBailout)->entry,
-      representations);
-}
-
-
-void FastCloneShallowObjectStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a3, a2, a1, a0 };
-  descriptor->Initialize(
-      MajorKey(), arraysize(registers), registers,
-      Runtime::FunctionForId(Runtime::kCreateObjectLiteral)->entry);
-}
-
-
-void CallFunctionStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  UNIMPLEMENTED();
-}
-
-
-void CallConstructStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  UNIMPLEMENTED();
-}
-
-
-void CreateAllocationSiteStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a2, a3 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers);
-}
-
-
-void RegExpConstructResultStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a2, a1, a0 };
-  descriptor->Initialize(
-      MajorKey(), arraysize(registers), registers,
-      Runtime::FunctionForId(Runtime::kRegExpConstructResult)->entry);
-}
-
-
-void TransitionElementsKindStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a0, a1 };
-  Address entry =
-      Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry;
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         FUNCTION_ADDR(entry));
-}
-
-
-void CompareNilICStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         FUNCTION_ADDR(CompareNilIC_Miss));
-  descriptor->SetMissHandler(
-      ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate()));
-}
-
-
 static void InitializeArrayConstructorDescriptor(
-    CodeStub::Major major, CodeStubInterfaceDescriptor* descriptor,
+    Isolate* isolate, CodeStub::Major major,
+    CodeStubInterfaceDescriptor* descriptor,
     int constant_stack_parameter_count) {
-  // register state
-  // cp -- context
-  // a0 -- number of arguments
-  // a1 -- function
-  // a2 -- allocation site with elements kind
   Address deopt_handler = Runtime::FunctionForId(
       Runtime::kArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
-    Register registers[] = { cp, a1, a2 };
-    descriptor->Initialize(major, arraysize(registers), registers,
-                           deopt_handler, NULL, constant_stack_parameter_count,
+    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
+        CallDescriptorKey::ArrayConstructorConstantArgCountCall);
+    descriptor->Initialize(major, call_descriptor, deopt_handler,
+                           constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
-    // stack param count needs (constructor pointer, and single argument)
-    Register registers[] = { cp, a1, a2, a0 };
-    Representation representations[] = {
-        Representation::Tagged(),
-        Representation::Tagged(),
-        Representation::Tagged(),
-        Representation::Integer32() };
-    descriptor->Initialize(major, arraysize(registers), registers, a0,
-                           deopt_handler, representations,
+    CallInterfaceDescriptor* call_descriptor =
+        isolate->call_descriptor(CallDescriptorKey::ArrayConstructorCall);
+    descriptor->Initialize(major, call_descriptor, a0, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
   }
@@ -156,29 +43,22 @@ static void InitializeArrayConstructorDescriptor(
 
 
 static void InitializeInternalArrayConstructorDescriptor(
-    CodeStub::Major major, CodeStubInterfaceDescriptor* descriptor,
+    Isolate* isolate, CodeStub::Major major,
+    CodeStubInterfaceDescriptor* descriptor,
     int constant_stack_parameter_count) {
-  // register state
-  // cp -- context
-  // a0 -- number of arguments
-  // a1 -- constructor function
   Address deopt_handler = Runtime::FunctionForId(
       Runtime::kInternalArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
-    Register registers[] = { cp, a1 };
-    descriptor->Initialize(major, arraysize(registers), registers,
-                           deopt_handler, NULL, constant_stack_parameter_count,
+    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
+        CallDescriptorKey::InternalArrayConstructorConstantArgCountCall);
+    descriptor->Initialize(major, call_descriptor, deopt_handler,
+                           constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
-    // stack param count needs (constructor pointer, and single argument)
-    Register registers[] = { cp, a1, a0 };
-    Representation representations[] = {
-        Representation::Tagged(),
-        Representation::Tagged(),
-        Representation::Integer32() };
-    descriptor->Initialize(major, arraysize(registers), registers, a0,
-                           deopt_handler, representations,
+    CallInterfaceDescriptor* call_descriptor = isolate->call_descriptor(
+        CallDescriptorKey::InternalArrayConstructorCall);
+    descriptor->Initialize(major, call_descriptor, a0, deopt_handler,
                            constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
   }
@@ -187,73 +67,40 @@ static void InitializeInternalArrayConstructorDescriptor(
 
 void ArrayNoArgumentConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeArrayConstructorDescriptor(MajorKey(), descriptor, 0);
+  InitializeArrayConstructorDescriptor(isolate(), MajorKey(), descriptor, 0);
 }
 
 
 void ArraySingleArgumentConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeArrayConstructorDescriptor(MajorKey(), descriptor, 1);
+  InitializeArrayConstructorDescriptor(isolate(), MajorKey(), descriptor, 1);
 }
 
 
 void ArrayNArgumentsConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeArrayConstructorDescriptor(MajorKey(), descriptor, -1);
-}
-
-
-void ToBooleanStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         FUNCTION_ADDR(ToBooleanIC_Miss));
-  descriptor->SetMissHandler(
-      ExternalReference(IC_Utility(IC::kToBooleanIC_Miss), isolate()));
+  InitializeArrayConstructorDescriptor(isolate(), MajorKey(), descriptor, -1);
 }
 
 
 void InternalArrayNoArgumentConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeInternalArrayConstructorDescriptor(MajorKey(), descriptor, 0);
+  InitializeInternalArrayConstructorDescriptor(isolate(), MajorKey(),
+                                               descriptor, 0);
 }
 
 
 void InternalArraySingleArgumentConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeInternalArrayConstructorDescriptor(MajorKey(), descriptor, 1);
+  InitializeInternalArrayConstructorDescriptor(isolate(), MajorKey(),
+                                               descriptor, 1);
 }
 
 
 void InternalArrayNArgumentsConstructorStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
-  InitializeInternalArrayConstructorDescriptor(MajorKey(), descriptor, -1);
-}
-
-
-void BinaryOpICStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a1, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         FUNCTION_ADDR(BinaryOpIC_Miss));
-  descriptor->SetMissHandler(
-      ExternalReference(IC_Utility(IC::kBinaryOpIC_Miss), isolate()));
-}
-
-
-void BinaryOpWithAllocationSiteStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a2, a1, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         FUNCTION_ADDR(BinaryOpIC_MissWithAllocationSite));
-}
-
-
-void StringAddStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { cp, a1, a0 };
-  descriptor->Initialize(MajorKey(), arraysize(registers), registers,
-                         Runtime::FunctionForId(Runtime::kStringAdd)->entry);
+  InitializeInternalArrayConstructorDescriptor(isolate(), MajorKey(),
+                                               descriptor, -1);
 }
 
 
@@ -1884,12 +1731,6 @@ void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
 }
 
 
-Register InstanceofStub::left() { return a0; }
-
-
-Register InstanceofStub::right() { return a1; }
-
-
 void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
   // The displacement is the offset of the last parameter (if any)
   // relative to the frame pointer.