Move tests from tests/ghc-regress/* to just tests/*

1 files changed, 40 insertions, 0 deletions

diff --git a/testsuite/tests/eyeball/inline2.hs b/testsuite/tests/eyeball/inline2.hs
new file mode 100644
index 0000000000..45bb04bf8b
--- /dev/null
+++ b/testsuite/tests/eyeball/inline2.hs
@@ -0,0 +1,40 @@
+{-# OPTIONS -fglasgow-exts -O -dshow-passes #-}
+
+module Foo where
+import GHC.Base
+
+foo :: Int -> Int
+foo (I# n#) = bar i i
+   where i# = n# +# 1#
+         i  = I# i#
+
+bar :: Int -> Int -> Int
+{-# INLINE [0] bar #-}
+bar _ n = n
+
+{-   The trouble here was 
+
+    *** Simplify:
+         Result size = 25
+         Result size = 25
+         Result size = 25
+         Result size = 25
+         Result size = 25
+    *** Simplify:
+         Result size = 25
+         Result size = 25
+         Result size = 25
+         Result size = 25
+         Result size = 25
+
+
+    etc.  
+
+The reason was this:
+	x = n# +# 1#
+ 	i = I# x
+
+Being an unboxed value, we were treating the argument context of x
+as intersting, and hence inlining x in the arg of I#. But then we just
+float it out again, giving an infinite loop.
+-}