[turbofan] Also lower JSCreateCatchContext in typed lowering.

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

 // Copyright 2014 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/code-factory.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 1122 matching lines @@
   ASSERT_TRUE(r.Changed());
   EXPECT_THAT(r.replacement(),
               IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
                                             Context::MIN_CONTEXT_SLOTS)),
                                         IsBeginRegion(_), control),
                              _));
 }
 
 
 // -----------------------------------------------------------------------------
+// JSCreateCatchContext
+
+
+TEST_F(JSTypedLoweringTest, 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),
+                             _));
+}
+
+
+// -----------------------------------------------------------------------------
 // JSInstanceOf
 // Test that instanceOf is reduced if and only if the right-hand side is a
 // function constant. Functional correctness is ensured elsewhere.
 
 
 TEST_F(JSTypedLoweringTest, JSInstanceOfSpecializationWithoutSmiCheck) {
   Node* const context = Parameter(Type::Any());
   Node* const frame_state = EmptyFrameState();
   Node* const effect = graph()->start();
   Node* const control = graph()->start();
@@ skipping 45 matching lines @@
   Node* dummy = graph()->NewNode(javascript()->ToObject(), instanceOf, context,
                                  frame_state, effect, control);
   Reduction r = Reduce(instanceOf);
   ASSERT_FALSE(r.Changed());
   ASSERT_EQ(instanceOf, dummy->InputAt(0));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8