[turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index c66ff1d22f3edfd8f26d5c6b8fcafcbf20aec59b..06509e896650c34eff8b29eb3f806cb0ef30511d 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -1058,6 +1058,11 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       break;
     case kArm64Float32ToUint64:
       __ Fcvtzu(i.OutputRegister64(), i.InputFloat32Register(0));
+      if (i.OutputCount() > 1) {
+        __ Fcmp(i.InputFloat32Register(0), 0.0);
+        __ Ccmp(i.OutputRegister(0), -1, ZFlag, ge);
+        __ Cset(i.OutputRegister(1), ne);
+      }
       break;
     case kArm64Float64ToUint64:
       __ Fcvtzu(i.OutputRegister64(), i.InputDoubleRegister(0));