lean4-htt/tests/lean/updateExprIssue.lean
Henrik Böving 32fb1ccf1c
refactor: port IR elim_dead_vars to LCNF (#12356)
This PR moves the IR elim_dead_vars pass to LCNF. It cannot delete the
pass yet as it is still used
in later IR passes.
2026-02-06 17:01:59 +00:00

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Text

import Lean
open Lean
unsafe def tst1 : MetaM Unit := do
let e := mkApp (mkSort levelZero) (mkSort levelZero)
let e' := e.updateApp! (mkSort levelZero) (mkSort levelZero)
assert! ptrAddrUnsafe e == ptrAddrUnsafe e'
let e' := e.replace fun _ => none
assert! ptrAddrUnsafe e == ptrAddrUnsafe e'
#eval tst1
set_option trace.Compiler.saveMono true
def sefFn (e : Expr) (f : Expr) : Expr :=
match e with
| .app _ a => e.updateApp! f a
| _ => e