[LLVMdev] RFC: Recursive inlining

[Chandler Carruth]

On Wed, Feb 18, 2015 at 12:57 PM, Pablo Barrio <Pablo.Barrio at arm.com> wrote:

> Also, virtually all processors beyond a certain level of sophistication
> (let's say, meant to run an OS) feature a return-stack prediction
> mechanism. This results in highly-efficient branch prediction for
> calls+returns. Since we are transforming the "call jumps" into "switch
> jumps", we are probably misusing that piece of hardware.


Yes, it will be critical to use a branching pattern that similarly fits
modern predictors. I don't think this will be hard though. Again, I'm
continuing to work on a prototype actual pass.
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