Does Julia have "unlikely" hint similar to in C++ or a way to fix code generation here

General Usage
4

This at least does something as you say on Julia 1.5.1 (with this modification), not on 1.6, and I’m not sure where to apply it (or fix for 1.6):

julia> @inline function expect(b::Bool)
                  Core.Intrinsics.llvmcall(("declare i1 @llvm.expect.i1(i1, i1)", """
                  %b = trunc i8 %0 to i1
                  %actual = call i1 @llvm.expect.i1(i1 %b, i1 true)
                  %byte = zext i1 %actual to i8
                  ret i8 %byte
                  """), Bool, Tuple{Bool}, b)
              end
expect (generic function with 1 method)

julia> expect(true)
ERROR: Module IR does not contain specified entry function
Stacktrace:
 [1] expect(b::Bool)
   @ Main ./REPL[112]:2
 [2] top-level scope
   @ REPL[113]:1

Anyway, ifelse, seemed to work, while the division wasn’t the exact first instruction 8maybe a good choice). It’s good to know, while it didn’t really help me optimize in this case.