[string] Widen StringIndexOf fast path

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 cdfa5c7ee33053ac56af914e6e8c33c9650708ff..cc1ef804d9b69a8381953717c5ce42fadf111708 100644
--- a/src/compiler/code-assembler.cc
+++ b/src/compiler/code-assembler.cc
@@ -733,6 +733,16 @@ Node* CodeAssembler::CallCFunction3(MachineType return_type,
                                          arg2_type, function, arg0, arg1, arg2);
 }
 
+Node* CodeAssembler::CallCFunction6(
+    MachineType return_type, MachineType arg0_type, MachineType arg1_type,
+    MachineType arg2_type, MachineType arg3_type, MachineType arg4_type,
+    MachineType arg5_type, Node* function, Node* arg0, Node* arg1, Node* arg2,
+    Node* arg3, Node* arg4, Node* arg5) {
+  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);
+}
+
 void CodeAssembler::Goto(Label* label) {
   label->MergeVariables();
   raw_assembler()->Goto(label->label_);