Add missing file

testsuite/tests/codeGen/should_run/setByteArray.hs

+{-# LANGUAGE BangPatterns, MagicHash, UnboxedTuples #-}
+{-# OPTIONS_GHC -Wall #-}
+
+module Main ( main ) where
+
+import GHC.Base
+
+data BA = BA ByteArray#
+
+-- Checks that setByteArray# works
+main :: IO ()
+main = do BA ba <- IO $ \s0 ->
+                        case newByteArray# 8# s0 of
+                        (# !s1, !mba #) ->
+                            case setByteArray# mba 0# 8# 65# s1 of
+                            !s2 ->
+                                case setByteArray# mba 1# 6# 67# s2 of
+                                !s3 ->
+                                    case unsafeFreezeByteArray# mba s3 of
+                                    (# s4, ba #) -> (# s4, BA ba #)
+          let f (I# i) = putStrLn [C# (indexCharArray# ba i)]
+          mapM_ f [0..7]
+