[hydrogen] optimize switch with string clauses

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 6f46509cac2a61018c9b824f96dd76dedfc846f7..2ea197d6fc198ed12d8fa77b1e1a137ec95cea88 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -1345,6 +1345,13 @@ void HCompareGeneric::PrintDataTo(StringStream* stream) {
 }
 
 
+void HCompareGenericAndBranch::PrintDataTo(StringStream* stream) {
+  stream->Add(Token::Name(token()));
+  stream->Add(" ");
+  HControlInstruction::PrintDataTo(stream);
+}
+
+
 void HCompareIDAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add(Token::Name(token()));
   stream->Add(" ");