Flambda2_simplify.Simplify_extcallSimplification of external calls
type t = | Unchanged of {return_types : Flambda2_types.t list Flambda2_lattices.Or_unknown.t;}| Specialised of Downwards_acc.t
* Flambda2_terms.Flambda.Expr.t
* Flambda2_terms.Removed_operations.t| Invalidval simplify_extcall :
Downwards_acc.t ->
Flambda2_terms.Flambda.Apply.t ->
callee_ty:Flambda2_types.t ->
arg_types:Flambda2_types.t list ->
t