[turbofan] Change TruncateFloat32ToInt64 to TryTruncateFloat32ToInt64.

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 0591c955b158020a8eae98262cc12c7772980bf6..c66ff1d22f3edfd8f26d5c6b8fcafcbf20aec59b 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -1039,6 +1039,13 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       break;
     case kArm64Float32ToInt64:
       __ Fcvtzs(i.OutputRegister64(), i.InputFloat32Register(0));
+      if (i.OutputCount() > 1) {
+        __ Cmp(i.OutputRegister(0), 1);
+        __ Ccmp(i.OutputRegister(0), -1, VFlag, vc);
+        __ Fccmp(i.InputFloat32Register(0), i.InputFloat32Register(0), VFlag,
+                 vc);
+        __ Cset(i.OutputRegister(1), vc);
+      }
       break;
     case kArm64Float64ToInt64:
       __ Fcvtzs(i.OutputRegister(0), i.InputDoubleRegister(0));