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  1. JDK
  2. JDK-8203215

IdealLoopTree::split_outer_loop leaves phi-nodes with only one input

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        IdealLoopTree::split_outer_loop leaves behind phi-nodes with only one input. When moving phis to outer loops, it needs to register the old_phis for transform, so that we can get rid of them. These phis will otherwise keep pinning other ops to a loop.

        This issue was reproduced in the ZGC repo running SPECjvm98/mpegaudio compiling "spec.benchmarks._222_mpegaudio.p::g"

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                • Assignee:
                  neliasso Nils Eliasson
                  Reporter:
                  neliasso Nils Eliasson
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