Make HTypeofIsAndBranch accept any representation input

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1298 matching lines @@
 
 HValue* HWrapReceiver::Canonicalize() {
   if (HasNoUses()) return NULL;
   if (receiver()->type().IsJSObject()) {
     return receiver();
   }
   return this;
 }
 
 
+HValue* HTypeofIsAndBranch::Canonicalize() {
+  if (value()->representation().IsSpecialization()) {
+    AllowHandleDereference allow_deref;

[Jakob Kummerow, 2013/11/05 14:42:49]

No way!

If you absolutely need this information during optimization phases, set a bit at
HInstruction construction time.

[Weiliang, 2013/11/07 11:53:30]

Done.

+    if (type_literal()->Equals(isolate()->heap()->number_string())) {
+      state_ = kAlwaysTrue;
+    } else {
+      state_ = kAlwaysFalse;
+    }
+  }
+
+  return this;
+}
+
+
 void HTypeof::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
 }
 
 
 void HForceRepresentation::PrintDataTo(StringStream* stream) {
   stream->Add("%s ", representation().Mnemonic());
   value()->PrintNameTo(stream);
 }
 
@@ skipping 2969 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal