Reland of [turbofan] Introduce proper JSCreateLiteralRegExp operator.

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index f1634eae0f155dcf3e5b18ea6c019fc18e493e5b..6ca1a956dccd3f38d4b09da23372a572895ace4e 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -1696,12 +1696,9 @@
   Node* closure = GetFunctionClosure();
 
   // Create node to materialize a regular expression literal.
-  Node* literal_index = jsgraph()->Constant(expr->literal_index());
-  Node* pattern = jsgraph()->Constant(expr->pattern());
-  Node* flags = jsgraph()->Constant(expr->flags());
-  const Operator* op =
-      javascript()->CallRuntime(Runtime::kCreateRegExpLiteral, 4);
-  Node* literal = NewNode(op, closure, literal_index, pattern, flags);
+  const Operator* op = javascript()->CreateLiteralRegExp(
+      expr->pattern(), expr->flags(), expr->literal_index());
+  Node* literal = NewNode(op, closure);
   PrepareFrameState(literal, expr->id(), ast_context()->GetStateCombine());
   ast_context()->ProduceValue(literal);
 }