| //@ compile-flags: -Copt-level=3 |
| //@ min-llvm-version: 20 |
| #![crate_type = "lib"] |
| |
| /// Ensure the function is properly optimized |
| /// In the issue #133528, the function was not getting optimized |
| /// whereas, a version with `bytes` wrapped into a `black_box` was optimized |
| /// It was probably a LLVM bug that was fixed in LLVM 20 |
| |
| // CHECK-LABEL: @looping_over_ne_bytes |
| // CHECK: icmp eq i64 %input, -1 |
| // CHECK-NEXT: ret i1 |
| #[no_mangle] |
| fn looping_over_ne_bytes(input: u64) -> bool { |
| let bytes = input.to_ne_bytes(); |
| bytes.iter().all(|x| *x == !0) |
| } |
