search for: r4td2

...s are in two separate blocks, and I guess that it must be the reason for the optimisation not taking place. This seems to be proven by using an even loop count like 0xFFFFFFF0 to avoid a middle check. In this case the optimisation works just fine. Here are the IR samples: https://ghostbin.com/paste/r4td2 <https://ghostbin.com/paste/r4td2>. At this point the thoughts arising on my side are: — Should this be considered a bug and reported to llvm-bugs or a desired behaviour? — If this is considered a bug, how is one supposed to fix it? With the exact sample provided the compiler could generally...