[turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

src/compiler/x64/instruction-selector-x64.cc

Index: src/compiler/x64/instruction-selector-x64.cc
diff --git a/src/compiler/x64/instruction-selector-x64.cc b/src/compiler/x64/instruction-selector-x64.cc
index d41eb7a4902c4b9fe56b24b51067b955ff591948..e5773c39aa8676e6ee08115a8ab5bc3b2380e026 100644
--- a/src/compiler/x64/instruction-selector-x64.cc
+++ b/src/compiler/x64/instruction-selector-x64.cc
@@ -865,9 +865,19 @@ void InstructionSelector::VisitTryTruncateFloat64ToInt64(Node* node) {
 }
 
 
-void InstructionSelector::VisitTruncateFloat32ToUint64(Node* node) {
+void InstructionSelector::VisitTryTruncateFloat32ToUint64(Node* node) {
   X64OperandGenerator g(this);
-  Emit(kSSEFloat32ToUint64, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
+  InstructionOperand inputs[] = {g.UseRegister(node->InputAt(0))};
+  InstructionOperand outputs[2];
+  size_t output_count = 0;
+  outputs[output_count++] = g.DefineAsRegister(node);
+
+  Node* success_output = NodeProperties::FindProjection(node, 1);
+  if (success_output) {
+    outputs[output_count++] = g.DefineAsRegister(success_output);
+  }
+
+  Emit(kSSEFloat32ToUint64, output_count, outputs, 1, inputs);
 }