Hello, I think it would be better if I put my question in context. In order to tell the processor that we are in a loop, the pause instruction could be used (also I think the "rep nop" produces the same opcode). This tells the processor that we are in a loop so it improves the access to the cache and the branching mechanism. My question is if the compiler is doing any improvement of this kind in a loop or I should write my own "pause" procedure/macro. For more info https://software.intel.com/en-us/articles/benefitting-power-and-performance-sleep-loops
Cheers! 2017-10-29 16:59 GMT+01:00 Matias Vara <matiasev...@gmail.com>: > Hello everyone, > > I want to implement the cpu_relax() function in order to use it inside > loops. However before, I would like to know if the fpc compiler is doing an > optimization of this kind. > > Kinds regards, Matias. >
_______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
