[fpc-devel] Experimentation: "Branch stitching"
lazarus at mfriebe.de
Mon Nov 28 16:37:27 CET 2022
On 28/11/2022 16:19, J. Gareth Moreton via fpc-devel wrote:
> I admit I can be disorganised sometimes and lose documents, so I
> apologise if you have sent them already and I mislaid them in my mess
> of a directory tree. Believe me though, I want to swallow all of this
> up if it means squeezing out every cycle I can out of the generated
> machine code!
> Curious to know... at which point did it become favourable to do a
> 32-byte align rather than a 16-byte align on x86 processors? Should
> the compiler start favouring 32-byte aligns for loops, say?
I couldn't find the 32byte align in that doc though. I must have picked
that up elsewhere. (I think).
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