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

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 92909d4dbaaaa501cb5da6b729d4153a2b6116ed..5918f50e4d3a54008143becabc0a4bb045c7232c 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1733,6 +1733,13 @@ LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
 }
 
 
+LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
+    HCompareHoleAndBranch* instr) {
+  LOperand* object = UseRegisterAtStart(instr->object());
+  return new(zone()) LCmpHoleAndBranch(object);
+}
+
+
 LInstruction* LChunkBuilder::DoIsObjectAndBranch(HIsObjectAndBranch* instr) {
   ASSERT(instr->value()->representation().IsTagged());
   LOperand* value = UseRegisterAtStart(instr->value());