RFR: 8312425: [vectorapi] AArch64: Optimize vector math operations with SLEEF [v9]

[Hamlin Li]

On Fri, 5 Jul 2024 17:44:14 GMT, Andrew Haley <aph at openjdk.org> wrote:

> I also had problems with javac running out of heap space, which was very odd. I fixed it with this:
> 
> ```
> diff --git a/make/autoconf/boot-jdk.m4 b/make/autoconf/boot-jdk.m4
> index 8d272c28ad5..617ccfd8fff 100644
> --- a/make/autoconf/boot-jdk.m4
> +++ b/make/autoconf/boot-jdk.m4
> @@ -470,7 +470,7 @@ AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS],
>    # Maximum amount of heap memory.
>    JVM_HEAP_LIMIT_32="768"
>    # Running a 64 bit JVM allows for and requires a bigger heap
> -  JVM_HEAP_LIMIT_64="1600"
> +  JVM_HEAP_LIMIT_64="6400"
> ```

For the command to run the tests, I use `make test TEST=org.openjdk.bench.jdk.incubator.vector.operation.Float" MICRO="FORK=1;ITER=10;WARMUP_ITER=10;JAVA_OPTIONS=-XX:+UnlockExperimentalVMOptions -XX:UseSVE=1 -XX:+EnableVectorSupport -XX:+UseVectorStubs"`.
I just copy and run Double/Float benchmark tests (without copying other tests under `org.openjdk.bench.jdk.incubator.vector.operation`), in which way I think it will not have this OOM issue.

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PR Comment: https://git.openjdk.org/jdk/pull/18605#issuecomment-2213280630