RFR: 8294262: AArch64: compiler/vectorapi/TestReverseByteTransforms.java test failed on SVE machine [v2]

Eric Liu eliu at openjdk.org
Sat Oct 1 00:21:24 UTC 2022


> This test failed at cases test_reversebytes_short/int/long_transform2, which expected the ReversBytesV node, but nothing was finally found. On SVE system, we have a specific optimization, `ReverseBytesV (ReverseBytesV X MASK) MASK => X`, which eliminates both ReverseBytesV nodes. This optimization rule is specifically on hardware with native predicate support. See https://github.com/openjdk/jdk/pull/9623 for more details.
> 
> As there is an SVE specific case TestReverseByteTransformsSVE.java, this patch simply marks TestReverseByteTransforms.java as non-SVE only.
> 
> [TEST]
> jdk/incubator/vector, hotspot/compiler/vectorapi pass on SVE machine

Eric Liu has updated the pull request incrementally with one additional commit since the last revision:

  add comment
  
  Change-Id: I4c17256ff656528bbcfcacd2ee2380df6ae14bf1

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/10442/files
  - new: https://git.openjdk.org/jdk/pull/10442/files/cf4d967d..d3aa14e6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10442&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10442&range=00-01

  Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/10442.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10442/head:pull/10442

PR: https://git.openjdk.org/jdk/pull/10442


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