J. Gareth Moreton <gar...@moreton-family.com> schrieb am Mi., 27. Nov. 2019, 18:08:
> Hi everyone, > > Specifically to Florian, Jonas and Pierre, I would like to remove the > "movz-> and" family of optimisations from the x86 peephole optimiser > because the zero-extension commands no longer have the performance > penalty that they had back in the 90s. Both instructions have a > read/write dependency, but movzx uses fewer bytes. > In my opinion that should depend on the selected optimization processor (-OpX) as one might still want generate code for older processors. Regards, Sven >
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