[turbofan] Implement tail calls with differing stack parameter counts

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 6a5bdfd69219dda85d691a80e6238fded8603a19..fe8f061d630a490ee5a5e9ad4ecebcc071bbf97e 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -62,7 +62,9 @@ size_t hash_value(CallRuntimeParameters const& p) {
 
 
 std::ostream& operator<<(std::ostream& os, CallRuntimeParameters const& p) {
-  return os << p.id() << ", " << p.arity();
+  return os << p.id() << ", " << p.arity() << ", "
+            << ((p.mode() == ALLOW_TAIL_CALLS) ? "ALLOW_TAIL_CALLS"
+                                               : "NO_TAIL_CALLS");
 }
 
 
@@ -538,8 +540,9 @@ const Operator* JSOperatorBuilder::CallFunction(size_t arity,
 
 
 const Operator* JSOperatorBuilder::CallRuntime(Runtime::FunctionId id,
-                                               size_t arity) {
-  CallRuntimeParameters parameters(id, arity);
+                                               size_t arity,
+                                               TailCallMode mode) {
+  CallRuntimeParameters parameters(id, arity, mode);
   const Runtime::Function* f = Runtime::FunctionForId(parameters.id());
   DCHECK(f->nargs == -1 || f->nargs == static_cast<int>(parameters.arity()));
   return new (zone()) Operator1<CallRuntimeParameters>(   // --