Test for #7162: RULES that never fire automatically

testsuite/tests/simplCore/should_compile/T7162.hs

+import Data.Char
+
+{-# RULES "map-loop" [~] forall f . map' f = map' (id . f) #-}
+
+{-# NOINLINE map' #-}
+map' f [] = []
+map' f (x:xs) = f x : map' f xs
+
+main = print (map' toUpper "Hello, World")

testsuite/tests/simplCore/should_compile/all.T

@@ -35,6 +35,7 @@ test('spec003', normal, compile, [''])
 
 test('rule1', normal, compile, [''])
 test('rule2', only_ways(['optasm']), compile, ['-dsuppress-uniques'])
+test('T7162', normal, compile, [''])
 
 test('dfun-loop', normal, compile, [''])
 test('strict-float', normal, compile, [''])