Can Ahead of Time code benefit regular Java applications too?

[Andrew Haley]

On 6/1/22 06:07, Julian Waters wrote:
> Likewise, perhaps working in a similar fashion to
> intrinsics, you could have certain sections of regularly compiled Java code
> within jars replaced by native code compiled by C1 (or C2?) if the JVM it
> was compiled by and the target OS/CPU match the current running JVM and
> OS/CPU

The problem there would be that of jaotc: it worked, but because the pre-
compiled code was not patchable, it had to use indirection for all accesses.
So, every field offset, method reference, etc. went through a writable
section. All of these had to be fixed up, and of course it bulked out
the runtime. The whole process, in the end, wasn't much quicker than
C1 compilation.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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