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authorMagnus Lång <[email protected]>2017-03-09 16:59:55 +0100
committerMagnus Lång <[email protected]>2017-03-16 20:49:42 +0100
commit040f6e240a80cb8576ddb3e7b2b49fd7f98aa3dc (patch)
treee6aceca5f90b76d44838c9fb9a13d8d07f5eda8b /lib/hipe/test
parentf9263b9173905d4e7a53350d4f374c5020c52738 (diff)
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hipe: Add basic_edge_cases test case
Two tests are added, primarily aimed at the range splitters. * test_float_spills, which exercises the rare case of high floating point register pressure, including spill slot move coalescing. * test_infinite_loops, which tests that various infinite loops are properly compiled and do contain reduction tests (otherwise they would permanently hog their scheduler and not notice being sent an exit signal).
Diffstat (limited to 'lib/hipe/test')
-rw-r--r--lib/hipe/test/basic_SUITE_data/basic_edge_cases.erl142
1 files changed, 142 insertions, 0 deletions
diff --git a/lib/hipe/test/basic_SUITE_data/basic_edge_cases.erl b/lib/hipe/test/basic_SUITE_data/basic_edge_cases.erl
new file mode 100644
index 0000000000..9bf5cf52cd
--- /dev/null
+++ b/lib/hipe/test/basic_SUITE_data/basic_edge_cases.erl
@@ -0,0 +1,142 @@
+%%% -*- erlang-indent-level: 2 -*-
+%%%----------------------------------------------------------------------
+%%% Contains
+%%%----------------------------------------------------------------------
+-module(basic_edge_cases).
+
+-export([test/0]).
+
+test() ->
+ ok = test_float_spills(),
+ ok = test_infinite_loops(),
+ ok.
+
+%% Contains more float temps live at a single point than there are float
+%% registers in any backend
+
+test_float_spills() ->
+ {{{2942.0,4670.0,3198.0,4926.0,2206.0,4734.0},
+ {3118.0,2062.0,5174.0,3038.0,3618.0,3014.0},
+ {2542.0,2062.0,4934.0,2590.0,3098.0,3062.0},
+ {2950.0,3666.0,2574.0,5038.0,1866.0,2946.0},
+ {3126.0,3050.0,3054.0,5070.0,2258.0,2714.0},
+ {4734.0,2206.0,4926.0,3198.0,4670.0,2942.0}},
+ 58937.0} =
+ mat66_flip_sum(35.0,86.0,32.0,88.0,33.0,57.0,
+ 22.0,77.0,91.0,80.0,14.0,33.0,
+ 51.0,28.0,87.0,20.0,91.0,11.0,
+ 68.0,83.0,64.0,82.0,10.0,86.0,
+ 74.0,18.0,08.0,52.0,10.0,14.0,
+ 89.0,34.0,64.0,66.0,58.0,55.0,
+ 0.0, 5),
+ ok.
+
+mat66_flip_sum(M11, M12, M13, M14, M15, M16,
+ M21, M22, M23, M24, M25, M26,
+ M31, M32, M33, M34, M35, M36,
+ M41, M42, M43, M44, M45, M46,
+ M51, M52, M53, M54, M55, M56,
+ M61, M62, M63, M64, M65, M66,
+ Acc, Ctr)
+ when is_float(M11), is_float(M12), is_float(M13),
+ is_float(M14), is_float(M15), is_float(M16),
+ is_float(M21), is_float(M22), is_float(M23),
+ is_float(M24), is_float(M25), is_float(M26),
+ is_float(M31), is_float(M32), is_float(M33),
+ is_float(M34), is_float(M35), is_float(M36),
+ is_float(M41), is_float(M42), is_float(M43),
+ is_float(M44), is_float(M45), is_float(M46),
+ is_float(M51), is_float(M52), is_float(M53),
+ is_float(M54), is_float(M55), is_float(M56),
+ is_float(M61), is_float(M62), is_float(M63),
+ is_float(M64), is_float(M65), is_float(M66),
+ is_float(Acc) ->
+ R11 = M66+M11, R12 = M65+M12, R13 = M64+M13,
+ R14 = M63+M14, R15 = M62+M15, R16 = M61+M16,
+ R21 = M56+M21, R22 = M55+M22, R23 = M54+M23,
+ R24 = M53+M24, R25 = M52+M25, R26 = M51+M26,
+ R31 = M46+M31, R32 = M45+M32, R33 = M44+M33,
+ R34 = M43+M34, R35 = M42+M35, R36 = M41+M36,
+ R41 = M26+M41, R42 = M25+M42, R43 = M24+M43,
+ R44 = M23+M44, R45 = M22+M45, R46 = M21+M46,
+ R51 = M36+M51, R52 = M35+M52, R53 = M34+M53,
+ R54 = M33+M54, R55 = M32+M55, R56 = M31+M56,
+ R61 = M16+M61, R62 = M15+M62, R63 = M14+M63,
+ R64 = M13+M64, R65 = M12+M65, R66 = M11+M66,
+ case Ctr of
+ 0 ->
+ {{{R11, R12, R13, R14, R15, R16},
+ {R21, R22, R23, R24, R25, R26},
+ {R31, R32, R33, R34, R35, R36},
+ {R41, R42, R43, R44, R45, R46},
+ {R51, R52, R53, R54, R55, R56},
+ {R61, R62, R63, R64, R65, R66}},
+ Acc};
+ _ ->
+ NewAcc = 0.0 + M11 + M12 + M13 + M14 + M15 + M16 +
+ + M21 + M22 + M23 + M24 + M25 + M26
+ + M31 + M32 + M33 + M34 + M35 + M36
+ + M41 + M42 + M43 + M44 + M45 + M46
+ + M51 + M52 + M53 + M54 + M55 + M56
+ + M61 + M62 + M63 + M64 + M65 + M66
+ + Acc,
+ mat66_flip_sum(R11+1.0, R12+1.0, R13+1.0, R14+1.0, R15+1.0, R16+1.0,
+ R21+1.0, R22+1.0, R23+1.0, R24+1.0, R25+1.0, R26+1.0,
+ R31+1.0, R32+1.0, R33+1.0, R34+1.0, R35+1.0, R36+1.0,
+ R41+1.0, R42+1.0, R43+1.0, R44+1.0, R45+1.0, R46+1.0,
+ R51+1.0, R52+1.0, R53+1.0, R54+1.0, R55+1.0, R56+1.0,
+ R61+1.0, R62+1.0, R63+1.0, R64+1.0, R65+1.0, R66+1.0,
+ NewAcc, Ctr-1)
+ end.
+
+%% Infinite loops must receive reduction tests, and might trip up basic block
+%% weighting, leading to infinite weights and/or divisions by zero.
+
+test_infinite_loops() ->
+ OldTrapExit = process_flag(trap_exit, true),
+ ok = test_infinite_loop(fun infinite_recursion/0),
+ ok = test_infinite_loop(fun infinite_corecursion/0),
+ RecursiveFun = fun RecursiveFun() -> RecursiveFun() end,
+ ok = test_infinite_loop(RecursiveFun),
+ CorecursiveFunA = fun CorecursiveFunA() ->
+ CorecursiveFunA1 = fun () -> CorecursiveFunA() end,
+ CorecursiveFunA1()
+ end,
+ ok = test_infinite_loop(CorecursiveFunA),
+ CorecursiveFunB1 = fun(CorecursiveFunB) -> CorecursiveFunB() end,
+ CorecursiveFunB = fun CorecursiveFunB() ->
+ CorecursiveFunB1(CorecursiveFunB)
+ end,
+ ok = test_infinite_loop(CorecursiveFunB),
+ CorecursiveFunC1 = fun CorecursiveFunC1(Other) ->
+ Other(CorecursiveFunC1)
+ end,
+ CorecursiveFunC = fun CorecursiveFunC(Other) ->
+ Other(CorecursiveFunC)
+ end,
+ ok = test_infinite_loop(fun() -> CorecursiveFunC(CorecursiveFunC1) end),
+ ok = test_infinite_loop(fun() -> CorecursiveFunC(CorecursiveFunC) end),
+ true = process_flag(trap_exit, OldTrapExit),
+ ok.
+
+-define(INFINITE_LOOP_TIMEOUT, 100).
+test_infinite_loop(Fun) ->
+ Tester = spawn_link(Fun),
+ kill_soon(Tester),
+ receive {'EXIT', Tester, awake} ->
+ undefined = process_info(Tester),
+ ok
+ after ?INFINITE_LOOP_TIMEOUT -> error(timeout)
+ end.
+
+infinite_recursion() -> infinite_recursion().
+
+infinite_corecursion() -> infinite_corecursion_1().
+infinite_corecursion_1() -> infinite_corecursion().
+
+kill_soon(Pid) ->
+ _ = spawn_link(fun() ->
+ timer:sleep(1),
+ erlang:exit(Pid, awake)
+ end),
+ ok.