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  1. JDK
  2. JDK-4814905

PhiNodes idealized prematurely.

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      Bugs 4781451 and 4799512 would be better fixed if compiler2 allowed TOP nodes to remain as inputs to PhiNodes.

      Currently, PhiNodes are idealized to a single input when all other inputs are Type::TOP. If the inputs to the corresponding RegionNode are not also eliminated, then C2 may have a node which does not dominate its uses.

            rasbold Chuck Rasbold
            rasbold Chuck Rasbold
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