Re: [PATCH v2 0/7] Implement inline static calls on PPC32 - v2

[Benjamin Gray]

On Thu, 2022-09-01 at 16:46 +0000, Christophe Leroy wrote:
> Surprisingly, I get worst performance with inline static call than
> with 
> out of line static call:

I'm not sure what hackbench is doing, but when microbenchmarking 64 bit
out-of-line calls in a loop I saw a similar thing where adding more
indirection improved the performance despite doing more work. The cause
seemed to be a combination of using older hardware and the target being
too short (just an integer increment). Moving to a newer machine and
adding a lot of NOPs to the target made the performance make sense.

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