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  1. JDK
  2. JDK-8129551

aarch64: some regressions introduced by addition of vectorisation code

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Environment:

      aarch64 development platform

    • Subcomponent:
    • Resolved In Build:
      b71
    • CPU:
      arm
    • OS:
      linux

      Backports

        Description

        The recent addition of vectorisation code introduced a number of regressions

        java/math/BigInteger/BigIntegerTest.java

        fails with an assertion failure when run with fastdebug or slowdebug builds

        # Internal Error (/home/alexander/build-open-jdk/dev/jdk9/baseline/dev/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp:2078), pid=8124, tid=0x0000007ec61eb1f0
        # assert(op == 0 && 0 == 0) failed: must be MOVI

        and also in test

        java/math/BigInteger/ModPow.java

        java.math.BigInteger::add([I[I)[I gets miscompiled. There is a

                ldr q16, [x17,x10,lsl #4]

        which should be a

                ldr q16, [x17,x10]

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                Assignee:
                enevill Ed Nevill
                Reporter:
                enevill Ed Nevill
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