[turbofan] Change TruncateFloat64ToUint64 to TryTruncateFloatToUint64.

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 8d9d782e71ae72d7bf76e2106ec9ed0f8460ce2a..af10ce5c2af43aa6b40b01492df437ed494eab3f 100644
--- a/src/compiler/mips64/instruction-selector-mips64.cc
+++ b/src/compiler/mips64/instruction-selector-mips64.cc
@@ -842,7 +842,11 @@ void InstructionSelector::VisitTruncateFloat32ToUint64(Node* node) {
 }
 
 
-void InstructionSelector::VisitTruncateFloat64ToUint64(Node* node) {
+void InstructionSelector::VisitTryTruncateFloat64ToUint64(Node* node) {
+  if (NodeProperties::FindProjection(node, 1)) {
+    // TODO(mips): implement the second return value.
+    UNIMPLEMENTED();
+  }
   VisitRR(this, kMips64TruncUlD, node);
 }