[turbofan] Implemented the TruncateFloat64ToUint64 TurboFan operator.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index 479c039e9a9a5424c9101c308e160ccff554bdc1..7c81aa308466ff7278813bffe797c5402b25505a 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -1242,6 +1242,11 @@ void InstructionSelector::VisitChangeFloat64ToInt64(Node* node) {
 }
 
 
+void InstructionSelector::VisitTruncateFloat64ToUint64(Node* node) {
+  VisitRR(this, kArm64Float64ToUint64, node);
+}
+
+
 void InstructionSelector::VisitChangeInt32ToInt64(Node* node) {
   VisitRR(this, kArm64Sxtw, node);
 }