RFR: 8378312: [VectorAPI] libraryUnaryOp/libraryBinaryOp failed to intrinsify

Yasumasa Suenaga ysuenaga at openjdk.org
Fri Feb 20 07:46:40 UTC 2026


I ran following code with `-Djdk.incubator.vector.DEBUG=true`, however it was not intrinsified.


  public static void cos(){
    var rand = new Random();
    for(int i = 0; i < 1_000_000; i++){
      var vec = DoubleVector.fromArray(DoubleVector.SPECIES_256, rand.doubles().limit(4).toArray(), 0);

      vec.lanewise(VectorOperators.COS);
    }
  }


I knew `__jsvml_cos4_ha_l9()` in libjsvml.so should be called in this case (via vector debug log), but it was not hitted even though I set breakpoint in it.

`LaneType` has been introduced in [JDK-8376187](https://bugs.openjdk.org/browse/JDK-8376187), and `LibraryCallKit::inline_vector_call()` was updated to handle lane type rather than class of element type. However `VectorMathLibrary` wasn't modified.

I confirmed `__jsvml_cos4_ha_l9()` is called with this fix, and also all jdk/jdk/incubator/vector jtreg tests passed on Linux AMD64.

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

Commit messages:
 - 8378312: [VectorAPI] libraryUnaryOp/libraryBinaryOp failed to intrinsify

Changes: https://git.openjdk.org/jdk/pull/29835/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29835&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378312
  Stats: 9 lines in 3 files changed: 2 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/29835.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29835/head:pull/29835

PR: https://git.openjdk.org/jdk/pull/29835


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