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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.

        Activity

        Hide
        hgupdate HG Updates added a comment -
        URL: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/52cfeb90ea8b
        User: kvn
        Date: 2016-04-20 03:46:14 +0000
        Show
        hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/52cfeb90ea8b User: kvn Date: 2016-04-20 03:46:14 +0000
        Hide
        hgupdate HG Updates added a comment -
        URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/52cfeb90ea8b
        User: lana
        Date: 2016-05-25 17:36:48 +0000
        Show
        hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/52cfeb90ea8b User: lana Date: 2016-05-25 17:36:48 +0000

          People

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

            • Created:
              Updated:
              Resolved: