[runtime] Turn ArgumentAccessStub into FastNewSloppyArgumentsStub.

src/compiler/js-create-lowering.cc

Index: src/compiler/js-create-lowering.cc
diff --git a/src/compiler/js-create-lowering.cc b/src/compiler/js-create-lowering.cc
index b2445455b080ac54624233bfac9e786051893344..704d3ff41b7a3ba8b7f2e00f6411b0c2f0a39447 100644
--- a/src/compiler/js-create-lowering.cc
+++ b/src/compiler/js-create-lowering.cc
@@ -286,31 +286,25 @@ Reduction JSCreateLowering::ReduceJSCreateArguments(Node* node) {
   if (outer_state->opcode() != IrOpcode::kFrameState) {
     switch (type) {
       case CreateArgumentsType::kMappedArguments: {
-        // TODO(bmeurer): Cleanup this mess at some point.
-        int parameter_count = state_info.parameter_count() - 1;
-        int parameter_offset = parameter_count * kPointerSize;
-        int offset = StandardFrameConstants::kCallerSPOffset + parameter_offset;
-        Node* parameter_pointer =
-            graph()->NewNode(machine()->IntAdd(),
-                             graph()->NewNode(machine()->LoadFramePointer()),
-                             jsgraph()->IntPtrConstant(offset));
-        Handle<SharedFunctionInfo> shared;
-        if (!state_info.shared_info().ToHandle(&shared)) return NoChange();
-        Callable callable = CodeFactory::ArgumentsAccess(
-            isolate(), shared->has_duplicate_parameters());
+        // TODO(mstarzinger): Duplicate parameters are not handled yet.
+        Handle<SharedFunctionInfo> shared_info;
+        if (!state_info.shared_info().ToHandle(&shared_info) ||
+            shared_info->has_duplicate_parameters()) {
+          return NoChange();
+        }
+        // TODO(bmeurer): Actually we don't need a frame state here.
+        Callable callable = CodeFactory::FastNewSloppyArguments(isolate());
         CallDescriptor* desc = Linkage::GetStubCallDescriptor(
             isolate(), graph()->zone(), callable.descriptor(), 0,
             CallDescriptor::kNeedsFrameState);
         const Operator* new_op = common()->Call(desc);
         Node* stub_code = jsgraph()->HeapConstant(callable.code());
         node->InsertInput(graph()->zone(), 0, stub_code);
-        node->InsertInput(graph()->zone(), 2,
-                          jsgraph()->Constant(parameter_count));
-        node->InsertInput(graph()->zone(), 3, parameter_pointer);
         NodeProperties::ChangeOp(node, new_op);
         return Changed(node);
       }
       case CreateArgumentsType::kUnmappedArguments: {
+        // TODO(bmeurer): Actually we don't need a frame state here.
         Callable callable = CodeFactory::FastNewStrictArguments(isolate());
         CallDescriptor* desc = Linkage::GetStubCallDescriptor(
             isolate(), graph()->zone(), callable.descriptor(), 0,
@@ -322,6 +316,7 @@ Reduction JSCreateLowering::ReduceJSCreateArguments(Node* node) {
         return Changed(node);
       }
       case CreateArgumentsType::kRestParameter: {
+        // TODO(bmeurer): Actually we don't need a frame state here.
         Callable callable = CodeFactory::FastNewRestParameter(isolate());
         CallDescriptor* desc = Linkage::GetStubCallDescriptor(
             isolate(), graph()->zone(), callable.descriptor(), 0,