782432 - IonMonkey: Compile small functions more aggressively

Status: RESOLVED WONTFIX

(Core :: JavaScript Engine, defect)

Description

[Kannan Vijayan [:djvj]]

Current compile heuristics use Ion to compile a function after roughly 10K uses.

Intuition and experimentation indicates that compiling "small" functions more aggressively (i.e. with lower use count) is worthwhile.

Reasoning:
1. Small functions are likely to be called more often on average.
2. Even when they're not, their compile cost is low, so we don't lose much if we're wrong.

Implementation:
Compile small functions with a lower use count.

Comment 1

[Kannan Vijayan [:djvj]]

Attachment: Patch.

Comment 2

[Kannan Vijayan [:djvj]]

https://hg.mozilla.org/projects/ionmonkey/rev/a8235a2a29c2

Comment 3

[Kannan Vijayan [:djvj]]

https://hg.mozilla.org/projects/ionmonkey/rev/a258b96b94ea

Rolled back patch as it significantly regressed a few benches in 32-bit SS, namely, access-binary-tree, crypto-md5, and bitops-bits-in-byte.

Comment 4

[Kannan Vijayan [:djvj]]

Cleaning up old bugs that are defunct.