[Turbofan] run load elimination concurrently.

src/compiler/dead-code-elimination.cc

Index: src/compiler/dead-code-elimination.cc
diff --git a/src/compiler/dead-code-elimination.cc b/src/compiler/dead-code-elimination.cc
index 81bf2997e670262b8e6bf26955b86f0af3bc86ac..c346c8d85652887220583d63c43f6352f91dda5b 100644
--- a/src/compiler/dead-code-elimination.cc
+++ b/src/compiler/dead-code-elimination.cc
@@ -18,8 +18,9 @@ DeadCodeElimination::DeadCodeElimination(Editor* editor, Graph* graph,
     : AdvancedReducer(editor),
       graph_(graph),
       common_(common),
-      dead_(graph->NewNode(common->Dead())) {}
-
+      dead_(graph->NewNode(common->Dead())) {
+  NodeProperties::SetType(dead_, Type::None());
+}
 
 Reduction DeadCodeElimination::Reduce(Node* node) {
   switch (node->opcode()) {