Merged r16150, r16174, r16175 into 3.19 branch.

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 3617 matching lines @@
   for (int i = 0; i < OperandCount(); ++i) {
     HConstant* operand = HConstant::cast(OperandAt(i));
     if (operand->HasInteger32Value()) {
       continue;
     } else if (operand->HasDoubleValue()) {
       HConstant* integer_input =
           new(graph->zone()) HConstant(DoubleToInt32(operand->DoubleValue()),
                                        Representation::Integer32());
       integer_input->InsertAfter(operand);
       SetOperandAt(i, integer_input);
-    } else if (operand == graph->GetConstantTrue()) {
-      SetOperandAt(i, graph->GetConstant1());
-    } else {
-      // This catches |false|, |undefined|, strings and objects.
+    } else if (operand->HasBooleanValue()) {
+      SetOperandAt(i, operand->BooleanValue() ? graph->GetConstant1()
+                                              : graph->GetConstant0());
+    } else if (operand->ImmortalImmovable()) {
       SetOperandAt(i, graph->GetConstant0());
     }
   }
   // Overwrite observed input representations because they are likely Tagged.
   for (HUseIterator it(uses()); !it.Done(); it.Advance()) {
     HValue* use = it.value();
     if (use->IsBinaryOperation()) {
       HBinaryOperation::cast(use)->set_observed_input_representation(
           it.index(), Representation::Integer32());
     }
@@ skipping 208 matching lines @@
     case kBackingStore:
       if (!name_.is_null()) stream->Add(*String::cast(*name_)->ToCString());
       stream->Add("[backing-store]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal