Emulator vs simulator performance

[J-F Garnier]

(06-06-2020 04:37 AM)Thomas Okken Wrote:  When built for 32-bit targets, the 64-bit integer operations are compiled into multiple 32-bit operations, and that might benefit from coding it in assembly instead to eliminate duplicate operations (e.g. a 64-bit integer multiplication requires four 32-bit multiplications in general, but the special case of squaring a 64-bit number can be done using only three 32-bit multiplications), but this was not done. Free42 for Windows is a 32-bit app, and the Android and iOS versions contain 32-bit and 64-bit code, running the 32-bit code on 32-bit platforms and running 64-bit code otherwise.

This may explain the observation from Valentin:

(06-05-2020 04:24 PM)Valentin Albillo Wrote:  Also, your Free42 BCD is running only ~75% faster on your hardware than mine on my mid-range Samsung tablet. Frankly, I would expect it to run much faster in your system (say, at least 4x).

Also I'm using a modest 1.8MHz core-i3 machine, more powerful machines may give significantly better performances.

J-F