683039 - IonMonkey: delayed compilation

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Brian Hackett [Laid off!]]

Code needs to warm up a little before TI can provide good information for property accesses etc. in a script.  IonMonkey should support delayed compilation in a similar manner to JM, though for now will only enter scripts at function entry rather than at loop heads.

Comment 1

[David Anderson [:dvander] - inactive, e-mail if emergency]

Attachment: patch

Introduces delayed compilation and --ion-eager to get around it.

Comment 2

[David Anderson [:dvander] - inactive, e-mail if emergency]

This potentially makes testing more annoying right now, since we'll have to type --ion-eager all the time, so if anyone would rather see --ion-lazy instead, let me know and I'll change it. (Though, in theory, we'd like to be testing with type inference which will need lazy compilation.)

Comment 3

[David Anderson [:dvander] - inactive, e-mail if emergency]

http://hg.mozilla.org/projects/ionmonkey/rev/4ceb3e9961e4

Comment 4

[Nicholas Nethercote [inactive]]

This made a huge difference for JM's memory consumption, so it's good to see IonMonkey getting the same treatment.