Today helpers are inlined only by SD2_OPT JIT. We can add helpers inlining to SD1_OPT too, but helpers classes are initialized only from VMStart class - so there will be ~1k methods compiled by SD1_OPT without helpers inlined and we will have a problem to differentiate them.
On 06 Dec 2006 16:52:12 +0600, Egor Pasko <[EMAIL PROTECTED]> wrote:
On the 0x237 day of Apache Harmony Mikhail Fursov wrote: > On 06 Dec 2006 13:13:51 +0600, Egor Pasko <[EMAIL PROTECTED]> wrote: > > > > Jitrino.OPT relies on edge profile. The most probable edges are > > fallthrough. > > The only problem here is that vmhelpers are never recompiled and their IR > is estimated with heuristic based profiler. So, as JIT developer, I'm not > sure if a branch in Java code will be layouted as fallthrough or as jump. That's interesting! I see no serious reasons that can stop us from profiling VM helpers. Just need the right .emconf. Or am I missing something? -- Egor Pasko
-- Mikhail Fursov
