A few days ago I tweeted a C# code snippet, showing a FizzBuzz implementation using some of the new features in C# 8.0. The tweet “went viral”, as the kids say, with several people admiring the terse

define i64 @_ZN7example3pow17hc017ca9caec19b5eE(i32 %pow, i64 %num) unnamed_addr #0 {
start:
 %_54 = icmp sgt i32 %pow, 0
 br i1 %_54, label %bb3.preheader, label %bb2

bb3.preheader:                                    ; preds = %start
 %0 = add nsw i32 %pow, -1
 %xtraiter = and i32 %pow, 7
 %1 = icmp ult i32 %0, 7
 br i1 %1, label %bb2.loopexit.unr-lcssa, label %bb3.preheader.new

bb3.preheader.new:                                ; preds = %bb3.preheader
 %unroll_iter = sub i32 %pow, %xtraiter
 br label %bb3

bb2.loopexit.unr-lcssa:                           ; preds = %bb3, %bb3.preheader
 %.lcssa.ph = phi i64 [ undef, %bb3.preheader ], [ %10, %bb3 ]
 %result.06.unr = phi i64 [ 1, %bb3.preheader ], [ %10, %bb3 ]
 %lcmp.mod = icmp eq i32 %xtraiter, 0
 br i1 %lcmp.mod, label %bb2, label %bb3.epil

bb3.epil:                                         ; preds = %bb2.loopexit.unr-lcssa, %bb3.epil
 %result.06.epil = phi i64 [ %2, %bb3.epil ], [ %result.06.unr, %bb2.loopexit.unr-lcssa ]
 %epil.iter = phi…