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-rw-r--r--backend/RTLgenproof.v4
1 files changed, 1 insertions, 3 deletions
diff --git a/backend/RTLgenproof.v b/backend/RTLgenproof.v
index 072db138..b003eb10 100644
--- a/backend/RTLgenproof.v
+++ b/backend/RTLgenproof.v
@@ -12,7 +12,7 @@
(** Correctness proof for RTL generation. *)
-Require Import Coqlib Maps AST Linking.
+Require Import Wellfounded Coqlib Maps AST Linking.
Require Import Integers Values Memory Events Smallstep Globalenvs.
Require Import Switch Registers Cminor Op CminorSel RTL.
Require Import RTLgen RTLgenspec.
@@ -1147,8 +1147,6 @@ Qed.
Ltac Lt_state :=
apply lt_state_intro; simpl; try omega.
-Require Import Wellfounded.
-
Lemma lt_state_wf:
well_founded lt_state.
Proof.