Ensure consistent result of transcendental functions.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index ee02b68ec30217af13d6bdd2b681b5eb0ed3c4ea..b271e490d115595df0b37f68baa33d1dba70705d 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -5420,6 +5420,7 @@ bool HGraphBuilder::TryInlineBuiltinFunctionCall(Call* expr, bool drop_extra) {
     case kMathLog:
     case kMathSin:
     case kMathCos:
+    case kMathTan:
       if (expr->arguments()->length() == 1) {
         HValue* argument = Pop();
         HValue* context = environment()->LookupContext();
@@ -5480,6 +5481,7 @@ bool HGraphBuilder::TryInlineBuiltinMethodCall(Call* expr,
     case kMathLog:
     case kMathSin:
     case kMathCos:
+    case kMathTan:
       if (argument_count == 2 && check_type == RECEIVER_MAP_CHECK) {
         AddCheckConstantFunction(expr, receiver, receiver_map, true);
         HValue* argument = Pop();