[turbofan] Add Int64(Add|Sub)WithOverflow support.

src/compiler/raw-machine-assembler.h

Index: src/compiler/raw-machine-assembler.h
diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h
index bb2f3cd23239fcab77557cf61e9dcfadfdbd1080..5c232ed1d124f3f600aac12259bec0fbb129376c 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -280,9 +280,15 @@ class RawMachineAssembler {
   Node* Int64Add(Node* a, Node* b) {
     return AddNode(machine()->Int64Add(), a, b);
   }
+  Node* Int64AddWithOverflow(Node* a, Node* b) {
+    return AddNode(machine()->Int64AddWithOverflow(), a, b);
+  }
   Node* Int64Sub(Node* a, Node* b) {
     return AddNode(machine()->Int64Sub(), a, b);
   }
+  Node* Int64SubWithOverflow(Node* a, Node* b) {
+    return AddNode(machine()->Int64SubWithOverflow(), a, b);
+  }
   Node* Int64Mul(Node* a, Node* b) {
     return AddNode(machine()->Int64Mul(), a, b);
   }