Revert of [turbofan] Introduce proper JSCreateLiteralRegExp operator.

src/compiler/js-generic-lowering.cc

Index: src/compiler/js-generic-lowering.cc
diff --git a/src/compiler/js-generic-lowering.cc b/src/compiler/js-generic-lowering.cc
index aa70f5279a851d9bb29490bd850b75bc85739a5e..58522dbf6e168362af81e19bbf89dc98ea44010b 100644
--- a/src/compiler/js-generic-lowering.cc
+++ b/src/compiler/js-generic-lowering.cc
@@ -506,7 +506,7 @@
 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);
 }
@@ -515,23 +515,9 @@
 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);
 }