[turbofan] Add TruncateFloat64ToInt32 machine operator.

src/compiler/machine-node-factory.h

Index: src/compiler/machine-node-factory.h
diff --git a/src/compiler/machine-node-factory.h b/src/compiler/machine-node-factory.h
index 014dbda06ad8e1da93649bca26387b0293df5031..1d5b7fe428a95aa4f939fc214b4ad65737e9ab9d 100644
--- a/src/compiler/machine-node-factory.h
+++ b/src/compiler/machine-node-factory.h
@@ -358,6 +358,9 @@ class MachineNodeFactory {
   Node* ChangeUint32ToUint64(Node* a) {
     return NEW_NODE_1(MACHINE()->ChangeUint32ToUint64(), a);
   }
+  Node* TruncateFloat64ToInt32(Node* a) {
+    return NEW_NODE_1(MACHINE()->TruncateFloat64ToInt32(), a);
+  }
   Node* TruncateInt64ToInt32(Node* a) {
     return NEW_NODE_1(MACHINE()->TruncateInt64ToInt32(), a);
   }