[turbofan] Effect linearization after representation inference.

src/compiler/graph-reducer.cc

Index: src/compiler/graph-reducer.cc
diff --git a/src/compiler/graph-reducer.cc b/src/compiler/graph-reducer.cc
index 6f583d6b6ac4e3f59a2c94ed847c8b600b2f8c75..2ef1ba137dd4a2ebbc914a2cef9f4221c2da9774 100644
--- a/src/compiler/graph-reducer.cc
+++ b/src/compiler/graph-reducer.cc
@@ -222,7 +222,11 @@ void GraphReducer::ReplaceWithValue(Node* node, Node* value, Node* effect,
         edge.UpdateTo(dead_);
         Revisit(user);
       } else {
-        UNREACHABLE();
+        DCHECK_NOT_NULL(control);
+        edge.UpdateTo(control);
+        Revisit(user);
+        // TODO(jarin) Check that the node cannot throw (otherwise, it
+        // would have to be connected via IfSuccess/IfException).
       }
     } else if (NodeProperties::IsEffectEdge(edge)) {
       DCHECK_NOT_NULL(effect);