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-rw-r--r--testsuite/tests/perf/compiler/T11545.hs12
-rw-r--r--testsuite/tests/perf/compiler/all.T4
2 files changed, 16 insertions, 0 deletions
diff --git a/testsuite/tests/perf/compiler/T11545.hs b/testsuite/tests/perf/compiler/T11545.hs
new file mode 100644
index 0000000000..d35e21c2e8
--- /dev/null
+++ b/testsuite/tests/perf/compiler/T11545.hs
@@ -0,0 +1,12 @@
+module T11545 where
+
+data A = A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A deriving (Eq)
+
+data QuadTree a = QuadTree !Int [a] (QuadTree a) (QuadTree a) (QuadTree a) (QuadTree a)
+
+foldQuadTree :: (a -> b -> b) -> Int -> b -> QuadTree a -> b
+foldQuadTree f maxSize = go
+ where
+ go z (QuadTree size elems t1 t2 t3 t4)
+ | size <= maxSize = foldr f z elems
+ | otherwise = go (go (go (go z t4) t3) t2) t1
diff --git a/testsuite/tests/perf/compiler/all.T b/testsuite/tests/perf/compiler/all.T
index 937858c2a7..b09c418698 100644
--- a/testsuite/tests/perf/compiler/all.T
+++ b/testsuite/tests/perf/compiler/all.T
@@ -452,3 +452,7 @@ test ('T9198',
[ collect_compiler_stats('bytes allocated',2) ],
compile,
[''])
+
+test('T11545',
+ [ expect_broken(11545) ],
+ compile, ['-O +RTS -M50M -RTS'])