P4
8319372 removed a transformation that tries to narrow the type of a CastII node at an If if the test is a comparison between the input of the CastII and some other node. The motivation for this removal was stability issues. JDK-8349479 should solve these issues. So it should be safe to add the code back. The question is whether it is beneficial or not.
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JDK-8349479 C2: when a Type node becomes dead, make CFG path that uses it unreachable
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- Resolved
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- Closed
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