Never hchange nan-hole to hole or hole to nan-hole.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index d22bcb59100ddf6abd751288c422dbca189ff285..9087d678ef3546fa431d3a6e1d245621c3cea6e8 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -4844,7 +4844,7 @@ void LCodeGen::DoNumberTagD(LNumberTagD* instr) {
     // If not the hole NaN, force the NaN to be canonical.
     __ VFPCanonicalizeNaN(input_reg, ne);
     __ b(ne, &no_special_nan_handling);
-    __ Move(reg, factory()->the_hole_value());
+    __ Move(reg, factory()->undefined_value());
     __ b(&done);
   }