1 files changed, 40 insertions, 0 deletions
diff --git a/testsuite/tests/eyeball/inline4.hs b/testsuite/tests/eyeball/inline4.hs
new file mode 100644
index 0000000000..2648c9e039
--- /dev/null
+++ b/testsuite/tests/eyeball/inline4.hs
@@ -0,0 +1,40 @@
+module CmmTx where
+
+data TxRes a = TxRes Bool a
+
+instance Monad TxRes where
+    return = TxRes False
+
+{-  Here you can get a simplifier loop thus:
+NOTE: Simplifier still going after 4 iterations; bailing out.  Size = 52
+NOTE: Simplifier still going after 4 iterations; bailing out.  Size = 52
+NOTE: Simplifier still going after 4 iterations; bailing out.  Size = 52
+NOTE: Simplifier still going after 4 iterations; bailing out.  Size = 52
+
+Reason: 'a' is inline (not pre/post unconditionally; just ordinary inlining)
+Then, since ($dm>>) has arity 3, the rhs of (>>) is a PAP, so the arg is
+floated out, past the big lambdas.
+
+See Note [Unsaturated functions] in SimplUtils 
+
+------------------------------------------------------------
+a_s9f{v} [lid] =
+  base:GHC.Base.:DMonad{v r5} [gid]
+    @ main:CmmTx.TxRes{tc rd}
+    >>={v a6E} [lid]
+    >>{v a6H} [lid]
+    return{v a6J} [lid]
+    fail{v a6M} [lid]
+>>{v a6H} [lid] [ALWAYS LoopBreaker Nothing] :: forall a{tv a6F} [tv]
+                                                       b{tv a6G} [tv].
+                                                main:CmmTx.TxRes{tc rd} a{tv a6F} [tv]
+                                                -> main:CmmTx.TxRes{tc rd} b{tv a6G} [tv]
+                                                -> main:CmmTx.TxRes{tc rd} b{tv a6G} [tv]
+[Arity 2
+ Str: DmdType LL]
+>>{v a6H} [lid] =
+  \ (@ a{tv a78} [sk] :: ghc-prim:GHC.Prim.*{(w) tc 34d})
+    (@ b{tv a79} [sk] :: ghc-prim:GHC.Prim.*{(w) tc 34d}) ->
+    base:GHC.Base.$dm>>{v r5f} [gid]
+      @ main:CmmTx.TxRes{tc rd} a_s9f{v} [lid] @ a{tv a78} [sk] @ b{tv a79} [sk]
+ -}