[Turbofan]: Add integer multiplication with overflow to typed lowering.

src/compiler/js-graph.cc

Index: src/compiler/js-graph.cc
diff --git a/src/compiler/js-graph.cc b/src/compiler/js-graph.cc
index 3f20daa3d174540aed830a7597ba2fde251e8ff3..2157572f26b5d22c184366e6b49e35f01bd0bd73 100644
--- a/src/compiler/js-graph.cc
+++ b/src/compiler/js-graph.cc
@@ -92,6 +92,10 @@ Node* JSGraph::ZeroConstant() {
   return CACHED(kZeroConstant, NumberConstant(0.0));
 }
 
+Node* JSGraph::MinusZeroConstant() {
+  return CACHED(kMinusZeroConstant,

[Benedikt Meurer, 2016/07/14 11:41:35]

Remove this one.

+                HeapConstant(factory()->minus_zero_value()));
+}
 
 Node* JSGraph::OneConstant() {
   return CACHED(kOneConstant, NumberConstant(1.0));