3 ms·
Whether or not the build may already be optimised depends on your source for the JDK. Looks like the Arch build of the OpenJDK is already using -O3.
by this_user 7y ago
Whether or not the build may already be optimised depends on your source for the JDK. Looks like the Arch build of the OpenJDK is already using -O3.
- mumblemumble 7y agoIt's not about what level of optimization is used, so much as what particular CPU generation the target is being optimized toward. The public binary distributions have to limit themselves to what X86-64 looked like when it first came out in 2003, which means they can't take advantage of any new instructions that were introduced in the past 16 years.