llvm-project

d6e20c42 - [flang] Clean-up for fir.do_loop generation in lowering. (#160630)

[flang] Clean-up for fir.do_loop generation in lowering. (#160630) This patch changes two things: 1. We do not need to use the loop counter's last value for regular do-loops in Lowering. 2. The loop counter's increment is implied by fir.do_loop operation, so there is no need to increment it explicitly. The last point has been especially confusing to me, because it was unclear why we have an explicit increment if it is implied. It looks like CFGConversion somehow still makes the final code correct, i.e. the counter is not incremented twice. Anyway, the new lowering should look more concise.