On Tue, 6 Jan 2026 08:47:56 GMT, Emanuel Peter <[email protected]> wrote:
>> Srinivas Vamsi Parasa has updated the pull request incrementally with one >> additional commit since the last revision: >> >> cleanup code related to labels > > And since this is a regression ... why not also plot the performance from > before [JDK-8275047](https://bugs.openjdk.org/browse/JDK-8275047), so we have > a more complete picture? Hi Emanuel (@eme64), Please see the updated data as you suggested. This PR (ArrayFill intrinsic with unmasked stores) only applies for: - Arrays of data type `byte`, `short` and `int` only - size <= 128 bytes for `MaxVectorSize=32` or `AVX3Threshold > 0` - size <=192 bytes for `MaxVectorSize=64` or `AVX3Threshold = 0` Thus, the performance data using your vector bulk operations JMH micro was obtained for sizes upto 200. Below are the plots for array fill with a variable value starting from a variable offset for `MaxVectorSize=32` @Benchmark @OperationsPerInvocation(REPETITIONS) public void fill_var_byte_arrays_fill() { for (int r = 0; r < REPETITIONS; r++) { int offset_store = offsetStore(r) + REGION_SIZE + REGION_2_BYTE_OFFSET; Arrays.fill(aB, offset_store, offset_store + NUM_ACCESS_ELEMENTS, varB); } } <img width="752" height="454" alt="image" src="https://github.com/user-attachments/assets/c4f2370b-979b-4714-a126-c44f9faedfb7"; /> <img width="752" height="455" alt="image" src="https://github.com/user-attachments/assets/0fc2fe84-0f9c-435f-aacd-fe3ea350aff7"; /> <img width="752" height="455" alt="image" src="https://github.com/user-attachments/assets/29d29ea0-cedc-4931-8bd1-e915d27744eb"; /> [continued below with more data] ------------- PR Comment: https://git.openjdk.org/jdk/pull/28442#issuecomment-3761659799
