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  1. JDK
  2. JDK-8229977

Shenandoah: save/restore FPU state aroud LRB runtime call

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    • Subcomponent:
      gc
    • Resolved In Build:
      b11
    • CPU:
      x86
    • OS:
      generic

      Description

      Nightlies show failures in CAS/CAE related jcstress tests, and they only seem to affect float/double variants.
      The root cause is JDK-8228369 which removed save_vector_registers()/restore_vector_registers() around the LRB runtime call. It turns out that we actually need them, because the LRB stub is used by C1/C2 CAS intrinsics.

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          relates to

          Enhancement - null JDK-8228369 Shenandoah: Refactor LRB C1 stubs

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              Assignee:
              rkennke Roman Kennke
              Reporter:
              rkennke Roman Kennke
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                Resolved: