// Copyright (c) 2016 Amanieu d'Antras
// Modifications Copyright 2026 PingCAP, Inc.
//
// Branch prediction helpers. Adapted from the hashbrown crate
// (https://github.com/rust-lang/hashbrown/blob/64bd7db1d1b148594edfde112cdb6d6260e2cfc3/src/util.rs),
// which is dual-licensed under Apache-2.0 and MIT. Once
// `core::hint::{likely, unlikely}` is stable with the necessary fixes, we can
// delete this module and use the std helpers directly.
//
// The toolchain being used is outdated, so we cannot use std intrinsics with
// its bugfixes or crates. So we adapted from hashbrown.
// TODO: after updating the toolchain, use intrinsics from std.

#[inline(always)]
#[cold]
fn cold_path() {}

#[inline(always)]
pub fn likely(b: bool) -> bool {
    if b {
        true
    } else {
        cold_path();
        false
    }
}

#[inline(always)]
pub fn unlikely(b: bool) -> bool {
    if b {
        cold_path();
        true
    } else {
        false
    }
}