[turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

src/compiler/machine-operator.cc

Index: src/compiler/machine-operator.cc
diff --git a/src/compiler/machine-operator.cc b/src/compiler/machine-operator.cc
index 7a104a2ab02d9c93647560985d2892e1938e5557..1cac6166863eb59f8a473632426d0dd8590245e9 100644
--- a/src/compiler/machine-operator.cc
+++ b/src/compiler/machine-operator.cc
@@ -137,6 +137,7 @@ CheckedStoreRepresentation CheckedStoreRepresentationOf(Operator const* op) {
   V(ChangeFloat64ToUint32, Operator::kNoProperties, 1, 0, 1)                  \
   V(TruncateFloat32ToInt64, Operator::kNoProperties, 1, 0, 1)                 \
   V(TruncateFloat64ToInt64, Operator::kNoProperties, 1, 0, 1)                 \
+  V(TruncateFloat32ToUint64, Operator::kNoProperties, 1, 0, 1)                \
   V(TruncateFloat64ToUint64, Operator::kNoProperties, 1, 0, 1)                \
   V(ChangeInt32ToFloat64, Operator::kNoProperties, 1, 0, 1)                   \
   V(RoundInt64ToFloat32, Operator::kNoProperties, 1, 0, 1)                    \