Let NaN flow as double into HBranch

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 84aa2a61dd7f0faf93de0a4fdbacdc8a9f2d2ed4..7cadec5c9aff51da9b51e81e612f0a47a6485b91 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1002,7 +1002,9 @@ LInstruction* LChunkBuilder::DoBranch(HBranch* instr) {
   // deoptimization environment.
   Representation rep = value->representation();
   HType type = value->type();
-  if (rep.IsTagged() && !type.IsSmi() && !type.IsBoolean()) {
+  ToBooleanStub::Types expected = instr->expected_input_types();
+  if (rep.IsTagged() && !type.IsSmi() && !type.IsBoolean() &&
+      expected != ToBooleanStub::all_types()) {
     return AssignEnvironment(result);
   }
   return result;