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  1. JDK
  2. JDK-8192070

Deoptimization performance degraded on x86 after AVX-512 support was added

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      Deoptimization performance degraded on x86 after AVX-512 support was added.

      Test case reported in JDK-8188133 triggers pathological behavior (continuous deoptimization) in the JVM and it's >50% slower in 9 vs 8.

      Profiling shows that deoptimization-related logic slowed down 2-3x and dominated by vframeArray::fill_in() where callee-saved registers are copied.

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              Assignee:
              sviswanathan Sandhya Viswanathan
              Reporter:
              vlivanov Vladimir Ivanov
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