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-rw-r--r--compiler/GHC/Core/Coercion/Opt.hs14
1 files changed, 7 insertions, 7 deletions
diff --git a/compiler/GHC/Core/Coercion/Opt.hs b/compiler/GHC/Core/Coercion/Opt.hs
index fb0a6b0cc0..76ffde9c4d 100644
--- a/compiler/GHC/Core/Coercion/Opt.hs
+++ b/compiler/GHC/Core/Coercion/Opt.hs
@@ -335,7 +335,7 @@ opt_co4 env _sym rep r (NthCo _r n co)
| Just (ty, _) <- isReflCo_maybe co
, n == 0
- , Just (tv, _) <- splitForAllTy_maybe ty
+ , Just (tv, _) <- splitForAllTyCoVar_maybe ty
-- works for both tyvar and covar
= liftCoSubst (chooseRole rep r) env (varType tv)
@@ -531,8 +531,8 @@ opt_univ env sym prov role oty1 oty2
-- can't optimize the AppTy case because we can't build the kind coercions.
- | Just (tv1, ty1) <- splitForAllTy_ty_maybe oty1
- , Just (tv2, ty2) <- splitForAllTy_ty_maybe oty2
+ | Just (tv1, ty1) <- splitForAllTyVar_maybe oty1
+ , Just (tv2, ty2) <- splitForAllTyVar_maybe oty2
-- NB: prov isn't interesting here either
= let k1 = tyVarKind tv1
k2 = tyVarKind tv2
@@ -544,8 +544,8 @@ opt_univ env sym prov role oty1 oty2
in
mkForAllCo tv1' eta' (opt_univ env' sym prov' role ty1 ty2')
- | Just (cv1, ty1) <- splitForAllTy_co_maybe oty1
- , Just (cv2, ty2) <- splitForAllTy_co_maybe oty2
+ | Just (cv1, ty1) <- splitForAllCoVar_maybe oty1
+ , Just (cv2, ty2) <- splitForAllCoVar_maybe oty2
-- NB: prov isn't interesting here either
= let k1 = varType cv1
k2 = varType cv2
@@ -1121,7 +1121,7 @@ etaForAllCo_ty_maybe co
= Just (tv, kind_co, r)
| Pair ty1 ty2 <- coercionKind co
- , Just (tv1, _) <- splitForAllTy_ty_maybe ty1
+ , Just (tv1, _) <- splitForAllTyVar_maybe ty1
, isForAllTy_ty ty2
, let kind_co = mkNthCo Nominal 0 co
= Just ( tv1, kind_co
@@ -1137,7 +1137,7 @@ etaForAllCo_co_maybe co
= Just (cv, kind_co, r)
| Pair ty1 ty2 <- coercionKind co
- , Just (cv1, _) <- splitForAllTy_co_maybe ty1
+ , Just (cv1, _) <- splitForAllCoVar_maybe ty1
, isForAllTy_co ty2
= let kind_co = mkNthCo Nominal 0 co
r = coVarRole cv1