RFR: 8365581: Optimize Java implementation of P256 arithmetic [v3]
Ben Perez
bperez at openjdk.org
Thu Aug 21 23:30:08 UTC 2025
> There are several places where MontgomeryIntegerPolynomialP256.mult() can be optimized. In particular, since modulus[2] = 0 several multiplications can be removed. Other multiplications can be replaced by shifts, which also saves time. Preliminary tests indicate an improvement between 5-10%.
Ben Perez has updated the pull request incrementally with one additional commit since the last revision:
minor edit
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/26792/files
- new: https://git.openjdk.org/jdk/pull/26792/files/46680f9d..a3ddd412
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=26792&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=26792&range=01-02
Stats: 6 lines in 1 file changed: 1 ins; 0 del; 5 mod
Patch: https://git.openjdk.org/jdk/pull/26792.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/26792/head:pull/26792
PR: https://git.openjdk.org/jdk/pull/26792
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