966279 - One-line function not inlined

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Marco Castelluccio [:marco]]

Attachment: prova.js

The function maxHeapify calls the function left, that is a one-liner.
If I remove the function call and substitute its code in its caller, the performance improves slightly. So I guess the function isn't inlined.

I'm running this snippet in the IE console and in the Firefox console, and IE is a lot faster here (40 ms vs 600 ms).

Comment 1

[Benjamin Bouvier [:bbouvier] (inactive)]

Baseline is faster than Ion on this one (55ms vs 250ms without parallel compilation). Except maxHeapify being not inlined as it's recursive, I don't see anything particular Ion flags logs (no bailouts nor OSI).

Comment 2

[Marco Castelluccio [:marco]]

The performance in the Developer Tools console is quite different than in normal web pages. Firefox is faster than IE and the function |left| is actually inlined.