> Please review this change that makes AccessFlags and modifier_flags u2 types > and removes the last remnants of Hotspot adding internal access flags. This > change moves AccessFlags and modifier_flags in Klass to alignment gaps saving > 16 bytes. From pahole: so it's a bit better. > > before: > > /* size: 216, cachelines: 4, members: 25, static members: 17 */ > /* sum members: 194, holes: 3, sum holes: 18 */ > > > after: > > /* size: 200, cachelines: 4, members: 25, static members: 17 */ > /* sum members: 188, holes: 4, sum holes: 12 */ > > > We may eventually move the modifiers to java.lang.Class but that's WIP. > > Tested with tier1-7 on oracle platforms. Did test builds on other platforms > (please try these changes ppc/arm32 and s390). Also requires minor Graal > changes.
Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision: Adopt @sspitsyn suggestion and strengthen field/method/class flag retrieval. ------------- Changes: - all: https://git.openjdk.org/jdk/pull/22246/files - new: https://git.openjdk.org/jdk/pull/22246/files/c60e96b4..8682a778 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=22246&range=09 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22246&range=08-09 Stats: 36 lines in 9 files changed: 11 ins; 5 del; 20 mod Patch: https://git.openjdk.org/jdk/pull/22246.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22246/head:pull/22246 PR: https://git.openjdk.org/jdk/pull/22246
