RFR: 8360934: Add AVX-512 intrinsics for ML-KEM - enhancement on AVX512_VBMI [v3]
Shawn M Emery
duke at openjdk.org
Thu Jan 8 00:24:11 UTC 2026
> This change allows use of the AVX512_VBMI/VMBI2 instruction set to further optimize decompression/parsing of polynomial coefficients for ML-KEM. The speedup gained in the ML-KEM benchmarks for key generation is between 0.3 to 0.6%, encapsulation is 0.4 to 1.7%, and decapsulation is 0.1 to 0.9%.
>
> Thank you to @sviswa7 and @ferakocz for their help in working through the early stages of this code with me.
Shawn M Emery has updated the pull request incrementally with one additional commit since the last revision:
8360934: Add AVX-512 intrinsics for ML-KEM - enhancement on AVX512_VBMI
Change Swap to Dup named function/variable
Check for only VBMI support (not VBMI2)
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/28815/files
- new: https://git.openjdk.org/jdk/pull/28815/files/7cd8de53..4af75963
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=28815&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=28815&range=01-02
Stats: 5 lines in 1 file changed: 0 ins; 0 del; 5 mod
Patch: https://git.openjdk.org/jdk/pull/28815.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/28815/head:pull/28815
PR: https://git.openjdk.org/jdk/pull/28815
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