[vectorIntrinsics] RFR: 8264321: Create a separate library for x86 Intel SVML assembly intrinsics

[Sandhya Viswanathan]

On Mon, 29 Mar 2021 20:48:05 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>> Intel Short Vector Math Library (SVML) based intrinsics in native x86 assembly provide optimized implementation for Vector API transcendental and trigonometric methods.
>> These methods can be built into a separate library instead of being part of libjvm.so or jvm.dll.
>> 
>> The following changes are made:
>>    The source for these methods is placed in the jdk.incubator.vector module under src/jdk.incubator.vector/linux/native/libsvml and src/jdk.incubator.vector/windows/native/libsvml.
>>    The assembly source files are named as “*.S” and include files are named as “*.S.inc”.
>>    The corresponding build script is placed at make/modules/jdk.incubator.vector/Lib.gmk.
>>    Changes are made to build system to support dependency tracking for assembly files with includes.
>>    The built native libraries (libsvml.so/svml.dll) are placed in bin directory of JDK on Windows and lib directory of JDK on Linux.
>>    The C2 JIT uses the dll_load and dll_lookup to get the addresses of optimized methods from this library.
>> 
>> Build system changes and module library build scripts are contributed by Magnus Ihse Bursie (ihse at openjdk.org).
>
> I presume this is partially related to https://github.com/openjdk/jdk/pull/3198 ?

@PaulSandoz  Yes openjdk/jdk#3198 is related to this.

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PR: https://git.openjdk.java.net/panama-vector/pull/53