[crankshaft] Fix constant folding of HDiv instruction.

src/crankshaft/hydrogen-instructions.cc

Index: src/crankshaft/hydrogen-instructions.cc
diff --git a/src/crankshaft/hydrogen-instructions.cc b/src/crankshaft/hydrogen-instructions.cc
index 465a18ae46e6145d08cb35d5156306cc3ab378d3..8e1d891b47824a0533b93968d1d7ae20ee69df39 100644
--- a/src/crankshaft/hydrogen-instructions.cc
+++ b/src/crankshaft/hydrogen-instructions.cc
@@ -3572,7 +3572,10 @@ HInstruction* HDiv::New(Isolate* isolate, Zone* zone, HValue* context,
     HConstant* c_left = HConstant::cast(left);
     HConstant* c_right = HConstant::cast(right);
     if ((c_left->HasNumberValue() && c_right->HasNumberValue())) {
-      if (c_right->DoubleValue() != 0) {
+      if (std::isnan(c_left->DoubleValue()) ||
+          std::isnan(c_right->DoubleValue())) {
+        return H_CONSTANT_DOUBLE(std::numeric_limits<double>::quiet_NaN());
+      } else if (c_right->DoubleValue() != 0) {
         double double_res = c_left->DoubleValue() / c_right->DoubleValue();
         if (IsInt32Double(double_res)) {
           return H_CONSTANT_INT(double_res);