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  1. JDK
  2. JDK-8154537

AArch64: some integer rotate instructions are never emitted

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b120
    • CPU:
      aarch64

      Description

      (src >>> shift) | (src << (32 - shift)) and (src >>> shift) | (src << (0 - shift)) with src an int have some support in the aarch64.ad ad file: rorI_rReg_Var_C_32 and rorI_rReg_Var_C0 but their definitions is broken and never match any ideal graph subtree.

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              • Assignee:
                roland Roland Westrelin
                Reporter:
                roland Roland Westrelin
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                Dates

                • Created:
                  Updated:
                  Resolved: