MIPS64: [turbofan] Implemented the TruncateFloat64ToUint64 TurboFan operator.

src/compiler/mips64/instruction-selector-mips64.cc

Index: src/compiler/mips64/instruction-selector-mips64.cc
diff --git a/src/compiler/mips64/instruction-selector-mips64.cc b/src/compiler/mips64/instruction-selector-mips64.cc
index 779ebfdfc870f9bb6a13ed217ee76357ed0856f1..8bfc523bf38dc35fd2a11a5ea5f5c8aeb6eaaa72 100644
--- a/src/compiler/mips64/instruction-selector-mips64.cc
+++ b/src/compiler/mips64/instruction-selector-mips64.cc
@@ -713,7 +713,7 @@ void InstructionSelector::VisitTruncateFloat64ToInt64(Node* node) {
 
 
 void InstructionSelector::VisitTruncateFloat64ToUint64(Node* node) {
-  UNIMPLEMENTED();
+  VisitRR(this, kMips64TruncUlD, node);
 }