[turbofan] Better and more sane support for tail calls

src/compiler/js-intrinsic-lowering.h

Index: src/compiler/js-intrinsic-lowering.h
diff --git a/src/compiler/js-intrinsic-lowering.h b/src/compiler/js-intrinsic-lowering.h
index 057f19ad413620c5a7c6068fccbb02c2ff247020..12bd88c83be22693320c495333c57d20909a5279 100644
--- a/src/compiler/js-intrinsic-lowering.h
+++ b/src/compiler/js-intrinsic-lowering.h
@@ -70,6 +70,7 @@ class JSIntrinsicLowering final : public AdvancedReducer {
   Reduction ReduceToPrimitive(Node* node);
   Reduction ReduceToString(Node* node);
   Reduction ReduceCall(Node* node);
+  Reduction ReduceTailCall(Node* node);
 
   Reduction Change(Node* node, const Operator* op);
   Reduction Change(Node* node, const Operator* op, Node* a, Node* b);