[turbofan] Slighly improve JSCreateArguments lowering.

test/unittests/compiler/js-create-lowering-unittest.cc

Index: test/unittests/compiler/js-create-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-create-lowering-unittest.cc b/test/unittests/compiler/js-create-lowering-unittest.cc
index e43dd27774517d8e6034730942ab474ad83d90ad..5d95d0db001a8a36cdb2917a6a913d3d2484620b 100644
--- a/test/unittests/compiler/js-create-lowering-unittest.cc
+++ b/test/unittests/compiler/js-create-lowering-unittest.cc
@@ -80,95 +80,56 @@ TEST_F(JSCreateLoweringTest, JSCreate) {
 // -----------------------------------------------------------------------------
 // JSCreateArguments
 
-TEST_F(JSCreateLoweringTest, JSCreateArgumentsViaStub) {
-  Node* const closure = Parameter(Type::Any());
-  Node* const context = UndefinedConstant();
-  Node* const effect = graph()->start();
-  Node* const control = graph()->start();
-  Handle<SharedFunctionInfo> shared(isolate()->object_function()->shared());
-  Node* const frame_state = FrameState(shared, graph()->start());
-  Reduction r = Reduce(graph()->NewNode(
-      javascript()->CreateArguments(CreateArgumentsType::kUnmappedArguments),
-      closure, context, frame_state, effect, control));
-  ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(
-      r.replacement(),
-      IsCall(_, IsHeapConstant(
-                    CodeFactory::FastNewStrictArguments(isolate()).code()),
-             closure, context, frame_state, effect, control));
-}
-
-TEST_F(JSCreateLoweringTest, JSCreateArgumentsRestParameterViaStub) {
-  Node* const closure = Parameter(Type::Any());
-  Node* const context = UndefinedConstant();
-  Node* const effect = graph()->start();
-  Node* const control = graph()->start();
-  Handle<SharedFunctionInfo> shared(isolate()->object_function()->shared());
-  Node* const frame_state = FrameState(shared, graph()->start());
-  Reduction r = Reduce(graph()->NewNode(
-      javascript()->CreateArguments(CreateArgumentsType::kRestParameter),
-      closure, context, frame_state, effect, control));
-  ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(
-      r.replacement(),
-      IsCall(_, IsHeapConstant(
-                    CodeFactory::FastNewRestParameter(isolate()).code()),
-             closure, context, frame_state, effect, control));
-}
-
 TEST_F(JSCreateLoweringTest, JSCreateArgumentsInlinedMapped) {
   Node* const closure = Parameter(Type::Any());
   Node* const context = UndefinedConstant();
   Node* const effect = graph()->start();
-  Node* const control = graph()->start();
   Handle<SharedFunctionInfo> shared(isolate()->object_function()->shared());
   Node* const frame_state_outer = FrameState(shared, graph()->start());
   Node* const frame_state_inner = FrameState(shared, frame_state_outer);
   Reduction r = Reduce(graph()->NewNode(
       javascript()->CreateArguments(CreateArgumentsType::kMappedArguments),
-      closure, context, frame_state_inner, effect, control));
+      closure, context, frame_state_inner, effect));
   ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(),
-              IsFinishRegion(
-                  IsAllocate(IsNumberConstant(JSSloppyArgumentsObject::kSize),
-                             _, control),
-                  _));
+  EXPECT_THAT(
+      r.replacement(),
+      IsFinishRegion(
+          IsAllocate(IsNumberConstant(JSSloppyArgumentsObject::kSize), _, _),
+          _));
 }
 
 TEST_F(JSCreateLoweringTest, JSCreateArgumentsInlinedUnmapped) {
   Node* const closure = Parameter(Type::Any());
   Node* const context = UndefinedConstant();
   Node* const effect = graph()->start();
-  Node* const control = graph()->start();
   Handle<SharedFunctionInfo> shared(isolate()->object_function()->shared());
   Node* const frame_state_outer = FrameState(shared, graph()->start());
   Node* const frame_state_inner = FrameState(shared, frame_state_outer);
   Reduction r = Reduce(graph()->NewNode(
       javascript()->CreateArguments(CreateArgumentsType::kUnmappedArguments),
-      closure, context, frame_state_inner, effect, control));
+      closure, context, frame_state_inner, effect));
   ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(),
-              IsFinishRegion(
-                  IsAllocate(IsNumberConstant(JSStrictArgumentsObject::kSize),
-                             _, control),
-                  _));
+  EXPECT_THAT(
+      r.replacement(),
+      IsFinishRegion(
+          IsAllocate(IsNumberConstant(JSStrictArgumentsObject::kSize), _, _),
+          _));
 }
 
 TEST_F(JSCreateLoweringTest, JSCreateArgumentsInlinedRestArray) {
   Node* const closure = Parameter(Type::Any());
   Node* const context = UndefinedConstant();
   Node* const effect = graph()->start();
-  Node* const control = graph()->start();
   Handle<SharedFunctionInfo> shared(isolate()->object_function()->shared());
   Node* const frame_state_outer = FrameState(shared, graph()->start());
   Node* const frame_state_inner = FrameState(shared, frame_state_outer);
   Reduction r = Reduce(graph()->NewNode(
       javascript()->CreateArguments(CreateArgumentsType::kRestParameter),
-      closure, context, frame_state_inner, effect, control));
+      closure, context, frame_state_inner, effect));
   ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(),
-              IsFinishRegion(
-                  IsAllocate(IsNumberConstant(JSArray::kSize), _, control), _));
+  EXPECT_THAT(
+      r.replacement(),
+      IsFinishRegion(IsAllocate(IsNumberConstant(JSArray::kSize), _, _), _));
 }
 
 // -----------------------------------------------------------------------------