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diff --git a/deps/v8/test/unittests/compiler/js-create-lowering-unittest.cc b/deps/v8/test/unittests/compiler/js-create-lowering-unittest.cc
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index 0000000000..837c5742d9
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+++ b/deps/v8/test/unittests/compiler/js-create-lowering-unittest.cc
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+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/compiler/js-create-lowering.h"
+#include "src/code-factory.h"
+#include "src/compiler/access-builder.h"
+#include "src/compiler/js-graph.h"
+#include "src/compiler/js-operator.h"
+#include "src/compiler/machine-operator.h"
+#include "src/compiler/node-properties.h"
+#include "src/compiler/operator-properties.h"
+#include "src/isolate-inl.h"
+#include "test/unittests/compiler/compiler-test-utils.h"
+#include "test/unittests/compiler/graph-unittest.h"
+#include "test/unittests/compiler/node-test-utils.h"
+#include "testing/gmock-support.h"
+
+using testing::_;
+using testing::BitEq;
+using testing::IsNaN;
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+class JSCreateLoweringTest : public TypedGraphTest {
+ public:
+ JSCreateLoweringTest()
+ : TypedGraphTest(3), javascript_(zone()), deps_(isolate(), zone()) {}
+ ~JSCreateLoweringTest() override {}
+
+ protected:
+ Reduction Reduce(Node* node) {
+ MachineOperatorBuilder machine(zone());
+ SimplifiedOperatorBuilder simplified(zone());
+ JSGraph jsgraph(isolate(), graph(), common(), javascript(), &simplified,
+ &machine);
+ // TODO(titzer): mock the GraphReducer here for better unit testing.
+ GraphReducer graph_reducer(zone(), graph());
+ JSCreateLowering reducer(&graph_reducer, &deps_, &jsgraph,
+ MaybeHandle<LiteralsArray>(), zone());
+ return reducer.Reduce(node);
+ }
+
+ Node* FrameState(Handle<SharedFunctionInfo> shared, Node* outer_frame_state) {
+ Node* state_values = graph()->NewNode(common()->StateValues(0));
+ return graph()->NewNode(
+ common()->FrameState(
+ BailoutId::None(), OutputFrameStateCombine::Ignore(),
+ common()->CreateFrameStateFunctionInfo(
+ FrameStateType::kJavaScriptFunction, 1, 0, shared)),
+ state_values, state_values, state_values, NumberConstant(0),
+ UndefinedConstant(), outer_frame_state);
+ }
+
+ JSOperatorBuilder* javascript() { return &javascript_; }
+
+ private:
+ JSOperatorBuilder javascript_;
+ CompilationDependencies deps_;
+};
+
+TEST_F(JSCreateLoweringTest, JSCreate) {
+ Handle<JSFunction> function = isolate()->object_function();
+ Node* const target = Parameter(Type::Constant(function, graph()->zone()));
+ Node* const context = Parameter(Type::Any());
+ Node* const effect = graph()->start();
+ Reduction r = Reduce(graph()->NewNode(javascript()->Create(), target, target,
+ context, EmptyFrameState(), effect));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(
+ r.replacement(),
+ IsFinishRegion(
+ IsAllocate(IsNumberConstant(function->initial_map()->instance_size()),
+ IsBeginRegion(effect), _),
+ _));
+}
+
+// -----------------------------------------------------------------------------
+// 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));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(
+ IsAllocate(IsNumberConstant(JSSloppyArgumentsObject::kSize),
+ _, control),
+ _));
+}
+
+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));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(
+ IsAllocate(IsNumberConstant(JSStrictArgumentsObject::kSize),
+ _, control),
+ _));
+}
+
+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));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(
+ IsAllocate(IsNumberConstant(JSArray::kSize), _, control), _));
+}
+
+// -----------------------------------------------------------------------------
+// JSCreateFunctionContext
+
+TEST_F(JSCreateLoweringTest, JSCreateFunctionContextViaInlinedAllocation) {
+ Node* const closure = Parameter(Type::Any());
+ Node* const context = Parameter(Type::Any());
+ Node* const effect = graph()->start();
+ Node* const control = graph()->start();
+ Reduction const r =
+ Reduce(graph()->NewNode(javascript()->CreateFunctionContext(8), closure,
+ context, effect, control));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
+ 8 + Context::MIN_CONTEXT_SLOTS)),
+ IsBeginRegion(_), control),
+ _));
+}
+
+// -----------------------------------------------------------------------------
+// JSCreateWithContext
+
+TEST_F(JSCreateLoweringTest, JSCreateWithContext) {
+ Node* const object = Parameter(Type::Receiver());
+ Node* const closure = Parameter(Type::Function());
+ Node* const context = Parameter(Type::Any());
+ Node* const effect = graph()->start();
+ Node* const control = graph()->start();
+ Reduction r =
+ Reduce(graph()->NewNode(javascript()->CreateWithContext(), object,
+ closure, context, effect, control));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
+ Context::MIN_CONTEXT_SLOTS)),
+ IsBeginRegion(_), control),
+ _));
+}
+
+// -----------------------------------------------------------------------------
+// JSCreateCatchContext
+
+TEST_F(JSCreateLoweringTest, JSCreateCatchContext) {
+ Handle<String> name = factory()->length_string();
+ Node* const exception = Parameter(Type::Receiver());
+ Node* const closure = Parameter(Type::Function());
+ Node* const context = Parameter(Type::Any());
+ Node* const effect = graph()->start();
+ Node* const control = graph()->start();
+ Reduction r =
+ Reduce(graph()->NewNode(javascript()->CreateCatchContext(name), exception,
+ closure, context, effect, control));
+ ASSERT_TRUE(r.Changed());
+ EXPECT_THAT(r.replacement(),
+ IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
+ Context::MIN_CONTEXT_SLOTS + 1)),
+ IsBeginRegion(_), control),
+ _));
+}
+
+} // namespace compiler
+} // namespace internal
+} // namespace v8
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