Revert of [regexp] Remove remainder of native RegExpExecStub

src/compiler/code-assembler.cc

Index: src/compiler/code-assembler.cc
diff --git a/src/compiler/code-assembler.cc b/src/compiler/code-assembler.cc
index 9e528dd015cb4c112cf94ee064436e3377c5e5ee..cc1ef804d9b69a8381953717c5ce42fadf111708 100644
--- a/src/compiler/code-assembler.cc
+++ b/src/compiler/code-assembler.cc
@@ -741,18 +741,6 @@
   return raw_assembler()->CallCFunction6(
       return_type, arg0_type, arg1_type, arg2_type, arg3_type, arg4_type,
       arg5_type, function, arg0, arg1, arg2, arg3, arg4, arg5);
-}
-
-Node* CodeAssembler::CallCFunction9(
-    MachineType return_type, MachineType arg0_type, MachineType arg1_type,
-    MachineType arg2_type, MachineType arg3_type, MachineType arg4_type,
-    MachineType arg5_type, MachineType arg6_type, MachineType arg7_type,
-    MachineType arg8_type, Node* function, Node* arg0, Node* arg1, Node* arg2,
-    Node* arg3, Node* arg4, Node* arg5, Node* arg6, Node* arg7, Node* arg8) {
-  return raw_assembler()->CallCFunction9(
-      return_type, arg0_type, arg1_type, arg2_type, arg3_type, arg4_type,
-      arg5_type, arg6_type, arg7_type, arg8_type, function, arg0, arg1, arg2,
-      arg3, arg4, arg5, arg6, arg7, arg8);
 }
 
 void CodeAssembler::Goto(Label* label) {