micro-optimization
Why are loops always compiled into “do…while” style (tail jump)?
Related: asm loop basics: While, Do While, For loops in Assembly Language (emu8086) Fewer instructions / uops inside the loop = better. Structuring the code outside the loop to achieve this is very often a good idea. Sometimes this requires “loop rotation” (peeling part of the first iteration so the actual loop body has the … Read more