Add support for uint64 compares to TurboFan.

src/compiler/simplified-lowering.cc

Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
index 7ab20f5d24e346f7026205fa6288b8ddaf942545..b0a168bb0bf55a4defc44728c1630b5c40847676 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -673,6 +673,9 @@ class RepresentationSelector {
       case IrOpcode::kInt64LessThanOrEqual:
         return VisitInt64Cmp(node);
 
+      case IrOpcode::kUint64LessThan:
+        return VisitUint64Cmp(node);
+
       case IrOpcode::kInt64UDiv:
       case IrOpcode::kInt64UMod:
         return VisitUint64Binop(node);