Revert of [turbofan] Introduce proper JSCreateLiteralRegExp operator.

src/compiler/js-generic-lowering.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/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 488 matching lines @@
   node->InsertInput(zone(), 0, jsgraph()->HeapConstant(p.shared_info()));
   ReplaceWithRuntimeCall(node, (p.pretenure() == TENURED)
                                    ? Runtime::kNewClosure_Tenured
                                    : Runtime::kNewClosure);
 }
 
 
 void JSGenericLowering::LowerJSCreateLiteralArray(Node* node) {
   CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
   node->InsertInput(zone(), 1, jsgraph()->SmiConstant(p.index()));
-  node->InsertInput(zone(), 2, jsgraph()->HeapConstant(p.constant()));
+  node->InsertInput(zone(), 2, jsgraph()->HeapConstant(p.constants()));
   node->InsertInput(zone(), 3, jsgraph()->SmiConstant(p.flags()));
   ReplaceWithRuntimeCall(node, Runtime::kCreateArrayLiteral);
 }
 
 
 void JSGenericLowering::LowerJSCreateLiteralObject(Node* node) {
   CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
   node->InsertInput(zone(), 1, jsgraph()->SmiConstant(p.index()));
-  node->InsertInput(zone(), 2, jsgraph()->HeapConstant(p.constant()));
+  node->InsertInput(zone(), 2, jsgraph()->HeapConstant(p.constants()));
   node->InsertInput(zone(), 3, jsgraph()->SmiConstant(p.flags()));
   ReplaceWithRuntimeCall(node, Runtime::kCreateObjectLiteral);
 }
 
 
-void JSGenericLowering::LowerJSCreateLiteralRegExp(Node* node) {
-  CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
-  CallDescriptor::Flags flags = AdjustFrameStatesForCall(node);
-  Callable callable = CodeFactory::FastCloneRegExp(isolate());
-  Node* literal_index = jsgraph()->SmiConstant(p.index());
-  Node* literal_flags = jsgraph()->SmiConstant(p.flags());
-  Node* pattern = jsgraph()->HeapConstant(p.constant());
-  node->InsertInput(graph()->zone(), 1, literal_index);
-  node->InsertInput(graph()->zone(), 2, pattern);
-  node->InsertInput(graph()->zone(), 3, literal_flags);
-  ReplaceWithStubCall(node, callable, flags);
-}
-
-
 void JSGenericLowering::LowerJSCreateCatchContext(Node* node) {
   Handle<String> name = OpParameter<Handle<String>>(node);
   node->InsertInput(zone(), 0, jsgraph()->HeapConstant(name));
   ReplaceWithRuntimeCall(node, Runtime::kPushCatchContext);
 }
 
 
 void JSGenericLowering::LowerJSCreateBlockContext(Node* node) {
   Handle<ScopeInfo> scope_info = OpParameter<Handle<ScopeInfo>>(node);
   node->InsertInput(zone(), 0, jsgraph()->HeapConstant(scope_info));
@@ skipping 341 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8