Charles Oliver Nutter created JRUBY-6500:
--------------------------------------------
Summary: Compiler improvements
Key: JRUBY-6500
URL: https://jira.codehaus.org/browse/JRUBY-6500
Project: JRuby
Issue Type: Improvement
Components: Compiler
Reporter: Charles Oliver Nutter
Fix For: JRuby 1.7
Catch-all for upcoming compiler improvements, aiming for 1.7.
* backref and lastline currently cause a full scope to be created for a given
method. This slows any code that calls innocuous methods like []. However, only
a NoVars scope should be necessary, to just have room for the backref/lastline
slots.
* backref and lastline could be shunted to some other stack or thread-local
structure, instead of requiring a scope. This would greatly reduce the impact
of methods as described above (no scope at all would be neccessary; worst case,
an int would need to be incremented/decremented in ThreadContext.
* Constant accesses currently require a dummy scope to be pushed/popped for any
methods that contain them. This could be eliminated by making sure the method
has access to its own StaticScope, which is the only additional structure
needed to lookup constants. Combined with invokedynamic constant lookup, this
would make constant access essentially free.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://jira.codehaus.org/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
