I've been playing with this a bit and it's still a significant win on Speedometer (> 5%), Google Docs (5-10%) etc. SunSpider, Kraken, Octane are either unaffected or show an improvement. This only tunes inlining options - we could probably get more speedups by making more IonBuilder code or expensive optimization passes run at the highest optimization level.
Bug 1382650 Comment 5 Edit History
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I've been playing with this a bit and it's still a significant win on Speedometer (> 5%), Google Docs (5-10%) etc. SunSpider, Kraken, Octane are either unaffected or show an improvement. This only tunes inlining options - we could probably get more speedups by making more IonBuilder code or expensive optimization passes run only at the highest optimization level.