Function is_adjusted 

pub fn is_adjusted(cx: &LateContext<'_>, e: &Expr<'_>) -> bool

Returns true if the given Expr has been coerced before.

Examples of coercions can be found in the Nomicon at https://doc.rust-lang.org/nomicon/coercions.html.

See rustc_middle::ty::adjustment::Adjustment and rustc_hir_analysis::check::coercion for more information on adjustments and coercions.