[turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

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 7aa8254fac41952188c1b798a2fdad7510599885..06f8e9bcd3b6d2d708c7ab1483da5ec2fb8861ad 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -1237,8 +1237,20 @@ void InstructionSelector::VisitChangeFloat64ToUint32(Node* node) {
 }
 
 
-void InstructionSelector::VisitTruncateFloat32ToInt64(Node* node) {
-  VisitRR(this, kArm64Float32ToInt64, node);
+void InstructionSelector::VisitTryTruncateFloat32ToInt64(Node* node) {
+  Arm64OperandGenerator g(this);
+
+  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(kArm64Float32ToInt64, output_count, outputs, 1, inputs);
 }