Contribution of PowerPC port.

src/hydrogen-bch.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/hydrogen-bch.h"
 
 namespace v8 {
 namespace internal {
 
 /*
@@ skipping 156 matching lines @@
           break;
         }
       }
 
       current = next;
     }
 
     return unsafe ? OPTIMISTICALLY_HOISTABLE : HOISTABLE;
   }
 
+// Work around for GCC 4.4.6 at -O3 reporting
+// warning: may be used uninitialized in this function
+#pragma GCC diagnostic ignored "-Wuninitialized"
   explicit InductionVariableBlocksTable(HGraph* graph)
     : graph_(graph), loop_header_(NULL),
       elements_(graph->blocks()->length(), graph->zone()) {
     for (int i = 0; i < graph->blocks()->length(); i++) {
       Element element;
       element.set_block(graph->blocks()->at(i));
       elements_.Add(element, graph->zone());
       ASSERT(at(i)->block()->block_id() == i);
     }
   }
@@ skipping 183 matching lines @@
 
 void HBoundsCheckHoistingPhase::HoistRedundantBoundsChecks() {
   InductionVariableBlocksTable table(graph());
   table.CollectInductionVariableData(graph()->entry_block());
   for (int i = 0; i < graph()->blocks()->length(); i++) {
     table.EliminateRedundantBoundsChecks(graph()->blocks()->at(i));
   }
 }
 
 } }  // namespace v8::internal