X87: [stubs] Remove N-argument Hydrogen-based Array constructor stub.

  port c8ac0d86(r36888)

  original commit message:
  Instead, always tail call to the runtime. Also, cleanup the various versions
  of the runtime call that is used for Array construction fallback. There can be
  only one.

BUG=

Review-Url: https://codereview.chromium.org/2080223009
Cr-Commit-Position: refs/heads/master@{#37243}

src/crankshaft/x87/lithium-codegen-x87.cc

@@ -3845,14 +3845,7 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(ToRegister(instr->result()).is(eax));
 
   __ Move(eax, Immediate(instr->arity()));
-  if (instr->arity() == 1) {
-    // We only need the allocation site for the case we have a length argument.
-    // The case may bail out to the runtime, which will determine the correct
-    // elements kind with the site.
-    __ mov(ebx, instr->hydrogen()->site());
-  } else {
-    __ mov(ebx, isolate()->factory()->undefined_value());
-  }
+  __ mov(ebx, instr->hydrogen()->site());
 
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
@@ -3886,7 +3879,7 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
     __ bind(&done);
   } else {
-    ArrayNArgumentsConstructorStub stub(isolate(), kind, override_mode);
+    ArrayNArgumentsConstructorStub stub(isolate());
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
   }
 }

src/x87/code-stubs-x87.cc

@@ -22,52 +22,18 @@
 namespace v8 {
 namespace internal {
 
+#define __ ACCESS_MASM(masm)
 
-static void InitializeArrayConstructorDescriptor(
-    Isolate* isolate, CodeStubDescriptor* descriptor,
-    int constant_stack_parameter_count) {
-  // register state
-  // eax -- number of arguments
-  // edi -- function
-  // ebx -- allocation site with elements kind
-  Address deopt_handler = Runtime::FunctionForId(
-      Runtime::kArrayConstructor)->entry;
-
-  if (constant_stack_parameter_count == 0) {
-    descriptor->Initialize(deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE);
-  } else {
-    descriptor->Initialize(eax, deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE);
-  }
-}
-
-
-static void InitializeInternalArrayConstructorDescriptor(
-    Isolate* isolate, CodeStubDescriptor* descriptor,
-    int constant_stack_parameter_count) {
-  // register state
-  // eax -- number of arguments
-  // edi -- constructor function
-  Address deopt_handler = Runtime::FunctionForId(
-      Runtime::kInternalArrayConstructor)->entry;
-
-  if (constant_stack_parameter_count == 0) {
-    descriptor->Initialize(deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE);
-  } else {
-    descriptor->Initialize(eax, deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE);
-  }
-}
-
-
-void ArrayNArgumentsConstructorStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  InitializeArrayConstructorDescriptor(isolate(), descriptor, -1);
+void ArrayNArgumentsConstructorStub::Generate(MacroAssembler* masm) {
+  __ pop(ecx);
+  __ mov(MemOperand(esp, eax, times_4, 0), edi);
+  __ push(edi);
+  __ push(ebx);
+  __ push(ecx);
+  __ add(eax, Immediate(3));
+  __ TailCallRuntime(Runtime::kNewArray);
 }
 
-
 void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
   Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
   descriptor->Initialize(eax, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
@@ -79,15 +45,6 @@ void FastFunctionBindStub::InitializeDescriptor(
   descriptor->Initialize(eax, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
 }
 
-void InternalArrayNArgumentsConstructorStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, -1);
-}
-
-
-#define __ ACCESS_MASM(masm)
-
-
 void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm,
                                                ExternalReference miss) {
   // Update the static counter each time a new code stub is generated.
@@ -1491,7 +1448,7 @@ void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate);
   StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
   // It is important that the store buffer overflow stubs are generated first.
-  ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
+  CommonArrayConstructorStub::GenerateStubsAheadOfTime(isolate);
   CreateAllocationSiteStub::GenerateAheadOfTime(isolate);
   CreateWeakCellStub::GenerateAheadOfTime(isolate);
   BinaryOpICStub::GenerateAheadOfTime(isolate);
@@ -3950,17 +3907,14 @@ static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) {
   }
 }
 
-void ArrayConstructorStubBase::GenerateStubsAheadOfTime(Isolate* isolate) {
+void CommonArrayConstructorStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   ArrayConstructorStubAheadOfTimeHelper<ArrayNoArgumentConstructorStub>(
       isolate);
   ArrayConstructorStubAheadOfTimeHelper<ArraySingleArgumentConstructorStub>(
       isolate);
-  ArrayConstructorStubAheadOfTimeHelper<ArrayNArgumentsConstructorStub>(
-      isolate);
-}
+  ArrayNArgumentsConstructorStub stub(isolate);
+  stub.GetCode();
 
-void InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(
-    Isolate* isolate) {
   ElementsKind kinds[2] = {FAST_ELEMENTS, FAST_HOLEY_ELEMENTS};
   for (int i = 0; i < 2; i++) {
     // For internal arrays we only need a few things
@@ -3968,8 +3922,6 @@ void InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(
     stubh1.GetCode();
     InternalArraySingleArgumentConstructorStub stubh2(isolate, kinds[i]);
     stubh2.GetCode();
-    InternalArrayNArgumentsConstructorStub stubh3(isolate, kinds[i]);
-    stubh3.GetCode();
   }
 }
 
@@ -3987,13 +3939,15 @@ void ArrayConstructorStub::GenerateDispatchToArrayStub(
     CreateArrayDispatchOneArgument(masm, mode);
 
     __ bind(&not_one_case);
-    CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode);
+    ArrayNArgumentsConstructorStub stub(masm->isolate());
+    __ TailCallStub(&stub);
   } else if (argument_count() == NONE) {
     CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode);
   } else if (argument_count() == ONE) {
     CreateArrayDispatchOneArgument(masm, mode);
   } else if (argument_count() == MORE_THAN_ONE) {
-    CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode);
+    ArrayNArgumentsConstructorStub stub(masm->isolate());
+    __ TailCallStub(&stub);
   } else {
     UNREACHABLE();
   }
@@ -4103,7 +4057,7 @@ void InternalArrayConstructorStub::GenerateCase(MacroAssembler* masm,
   __ TailCallStub(&stub1);
 
   __ bind(&not_one_case);
-  InternalArrayNArgumentsConstructorStub stubN(isolate(), kind);
+  ArrayNArgumentsConstructorStub stubN(isolate());
   __ TailCallStub(&stubN);
 }
 

src/x87/interface-descriptors-x87.cc

@@ -270,19 +270,14 @@ void ArraySingleArgumentConstructorDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
-void ArrayConstructorDescriptor::InitializePlatformSpecific(
+void ArrayNArgumentsConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  // stack param count needs (constructor pointer, and single argument)
+  // register state
+  // eax -- number of arguments
+  // edi -- function
+  // ebx -- allocation site with elements kind
   Register registers[] = {edi, ebx, eax};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
-void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {edi, eax};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
+  data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 void VarArgFunctionDescriptor::InitializePlatformSpecific(