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  1. JDK
  2. JDK-8024070

C2 needs some form of type speculation

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: hs25
    • Fix Version/s: hs25
    • Component/s: hotspot
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    • Resolved In Build:
      b56

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        Description

        We drop some profiling data because it's of no immediate use. Rather than dropping it, we should register it with the type system and let it flow in the graph. At points where the static type or the local profiling doesn't help, we could then query the type system for speculative type data and if there's some emit a guard so it becomes the current type.

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                • Assignee:
                  roland Roland Westrelin
                  Reporter:
                  roland Roland Westrelin
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