// This test case tests the incremental compilation hash (ICH) implementation
// for if expressions.

// The general pattern followed here is: Change one thing between rev1 and rev2
// and make sure that the hash has changed, then change nothing between rev2 and
// rev3 and make sure that the hash has not changed.

//@ build-pass (FIXME(62277): could be check-pass?)
//@ revisions: cfail1 cfail2 cfail3 cfail4 cfail5 cfail6
//@ compile-flags: -Z query-dep-graph -O
//@ [cfail1]compile-flags: -Zincremental-ignore-spans
//@ [cfail2]compile-flags: -Zincremental-ignore-spans
//@ [cfail3]compile-flags: -Zincremental-ignore-spans
//@ ignore-backends: gcc

#![allow(warnings)]
#![feature(rustc_attrs)]
#![crate_type="rlib"]

// Change condition (if)
#[cfg(any(cfail1,cfail4))]
pub fn change_condition(x: bool) -> u32 {
    if  x {
        return 1
    }

    return 0
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail6")]
pub fn change_condition(x: bool) -> u32 {
    if !x {
        return 1
    }

    return 0
}

// Change then branch (if)
#[cfg(any(cfail1,cfail4))]
pub fn change_then_branch(x: bool) -> u32 {
    if x {
        return 1
    }

    return 0
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail6")]
pub fn change_then_branch(x: bool) -> u32 {
    if x {
        return 2
    }

    return 0
}


// Change else branch (if)
#[cfg(any(cfail1,cfail4))]
pub fn change_else_branch(x: bool) -> u32 {
    if x {
        1
    } else {
        2
    }
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail6")]
pub fn change_else_branch(x: bool) -> u32 {
    if x {
        1
    } else {
        3
    }
}


// Add else branch (if)
#[cfg(any(cfail1,cfail4))]
pub fn add_else_branch(x: bool) -> u32 {
    let mut ret = 1;

    if x {
        ret = 2;
    /*----*/
    }

    ret
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,typeck")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,typeck")]
#[rustc_clean(cfg="cfail6")]
pub fn add_else_branch(x: bool) -> u32 {
    let mut ret = 1;

    if x {
        ret = 2;
    } else {
    }

    ret
}


// Change condition (if let)
#[cfg(any(cfail1,cfail4))]
pub fn change_condition_if_let(x: Option<u32>) -> u32 {
    if let Some(_x) = x {
        return 1
    }

    0
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail6")]
pub fn change_condition_if_let(x: Option<u32>) -> u32 {
    if let Some(_ ) = x {
        return 1
    }

    0
}


// Change then branch (if let)
#[cfg(any(cfail1,cfail4))]
pub fn change_then_branch_if_let(x: Option<u32>) -> u32 {
    if let Some(x) = x {
        return x //-
    }

    0
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir,typeck")]
#[rustc_clean(cfg="cfail6")]
pub fn change_then_branch_if_let(x: Option<u32>) -> u32 {
    if let Some(x) = x {
        return x + 1
    }

    0
}


// Change else branch (if let)
#[cfg(any(cfail1,cfail4))]
pub fn change_else_branch_if_let(x: Option<u32>) -> u32 {
    if let Some(x) = x {
        x
    } else {
        1
    }
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,optimized_mir")]
#[rustc_clean(cfg="cfail6")]
pub fn change_else_branch_if_let(x: Option<u32>) -> u32 {
    if let Some(x) = x {
        x
    } else {
        2
    }
}


// Add else branch (if let)
#[cfg(any(cfail1,cfail4))]
pub fn add_else_branch_if_let(x: Option<u32>) -> u32 {
    let mut ret = 1;

    if let Some(x) = x {
        ret = x;
    /*----*/
    }

    ret
}

#[cfg(not(any(cfail1,cfail4)))]
#[rustc_clean(cfg="cfail2", except="opt_hir_owner_nodes,typeck")]
#[rustc_clean(cfg="cfail3")]
#[rustc_clean(cfg="cfail5", except="opt_hir_owner_nodes,typeck,optimized_mir")]
#[rustc_clean(cfg="cfail6")]
pub fn add_else_branch_if_let(x: Option<u32>) -> u32 {
    let mut ret = 1;

    if let Some(x) = x {
        ret = x;
    } else {
    }

    ret
}