> The support for Link Time Optimization in the JDK's make system could do with > some cleaning up, at the moment it simply assumes the compiler is gcc and > sets the flags as such. Instead of introducing changes in bulk, as a first > step, it would be good to simply supply the appropriate flags depending on > the compiler and refine the flags for the one existing compiler with support > for it. In practice the latter just means adding the proper > -fuse-linker-plugin to gcc compile step when link-time-opt is specified, as > without it the compiler generates both native code and information rich > representation for Link Time Optimization. With this flag, native code > generation is disabled and object files will contain only code required for > Link Time Optimization, thus speeding up compile times as well.
Julian Waters has updated the pull request incrementally with one additional commit since the last revision: Set optimization via JVM_OPTIMIZATION ------------- Changes: - all: https://git.openjdk.org/jdk/pull/9829/files - new: https://git.openjdk.org/jdk/pull/9829/files/9b6195a0..4921c220 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=9829&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9829&range=02-03 Stats: 8 lines in 1 file changed: 0 ins; 5 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/9829.diff Fetch: git fetch https://git.openjdk.org/jdk pull/9829/head:pull/9829 PR: https://git.openjdk.org/jdk/pull/9829
