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authorKostis Sagonas <[email protected]>2015-11-30 00:54:40 +0100
committerKostis Sagonas <[email protected]>2015-12-16 22:08:34 +0100
commit664cfa9f9c0676bdc949b2fd8c92dabcb3f75a09 (patch)
treec9a5fb698e5b9c68e1de7379c6e4abc8f31b2776 /lib
parentc3e5a1ea98d2dae23aa6d050f93b7912dbe6f43c (diff)
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Two more tests added
- A test for proper handling of negative numbers in binary search key tables - A test for HiPE's ICode range analysis
Diffstat (limited to 'lib')
-rw-r--r--lib/hipe/test/basic_SUITE_data/basic_bugs_hipe.erl102
1 files changed, 101 insertions, 1 deletions
diff --git a/lib/hipe/test/basic_SUITE_data/basic_bugs_hipe.erl b/lib/hipe/test/basic_SUITE_data/basic_bugs_hipe.erl
index e70c25c905..caa0e71d0b 100644
--- a/lib/hipe/test/basic_SUITE_data/basic_bugs_hipe.erl
+++ b/lib/hipe/test/basic_SUITE_data/basic_bugs_hipe.erl
@@ -16,6 +16,8 @@ test() ->
ok = test_unsafe_bsl(),
ok = test_unsafe_bsr(),
ok = test_R12B5_seg_fault(),
+ ok = test_switch_neg_int(),
+ ok = test_icode_range_anal(),
ok.
%%-----------------------------------------------------------------------
@@ -338,7 +340,7 @@ do_bsr(X, Y) ->
%% # Some message to be printed here each loop iteration
%% Segmentation fault
%%
-%% Diagnozed and fixed by Mikael Petterson (22 Jan 2009):
+%% Diagnosed and fixed by Mikael Pettersson (22 Jan 2009):
%%
%% I've analysed the recently posted HiPE bug report on erlang-bugs
%% <http://www.erlang.org/pipermail/erlang-bugs/2009-January/001162.html>.
@@ -361,3 +363,101 @@ repeat(N, Fun) ->
%% io:format("# Some message to be printed here each loop iteration\n"),
Fun(),
repeat(N - 1, Fun).
+
+%%-----------------------------------------------------------------------
+%% From: Jon Meredith
+%% Date: July 9, 2009
+%%
+%% Binary search key tables are sorted by the loader based on the
+%% runtime representations of the keys as unsigned words. However,
+%% the code generated for the binary search used signed comparisons.
+%% That worked for atoms and non-negative fixnums, but not for
+%% negative fixnums. Fixed by Mikael Pettersson July 10, 2009.
+%%-----------------------------------------------------------------------
+
+test_switch_neg_int() ->
+ ok = f(-80, 8).
+
+f(10, -1) -> ok;
+f(X, Y) ->
+ Y = g(X),
+ f(X + 10, Y - 1).
+
+g(X) -> % g(0) should be 0 but became -1
+ case X of
+ 0 -> 0;
+ -10 -> 1;
+ -20 -> 2;
+ -30 -> 3;
+ -40 -> 4;
+ -50 -> 5;
+ -60 -> 6;
+ -70 -> 7;
+ -80 -> 8;
+ _ -> -1
+ end.
+
+%%-----------------------------------------------------------------------
+%% From: Paul Guyot
+%% Date: Jan 31, 2011
+%%
+%% There is a bug in HiPE compilation with the comparison of floats
+%% with integers. This bug happens in functions f/1 and g/2 below.
+%% BEAM will evaluate f_eq(42) and f_eq(42.0) to true, while HiPE
+%% will evaluate them to false.
+%%
+%% The culprit was the Icode range analysis which was buggy. (On the
+%% other hand, HiPE properly evaluated these calls to true if passed
+%% the option 'no_icode_range'.) Fixed by Kostis Sagonas.
+%% --------------------------------------------------------------------
+
+test_icode_range_anal() ->
+ true = f_eq(42),
+ true = f_eq(42.0),
+ false = f_ne(42),
+ false = f_ne(42.0),
+ false = f_eq_ex(42),
+ false = f_eq_ex(42.0),
+ true = f_ne_ex(42),
+ true = f_ne_ex(42.0),
+ false = f_gt(42),
+ false = f_gt(42.0),
+ true = f_le(42),
+ true = f_le(42.0),
+ zero_test = g(0, test),
+ zero_test = g(0.0, test),
+ non_zero_test = g(42, test),
+ other = g(42, other),
+ ok.
+
+f_eq(X) ->
+ Y = X / 2,
+ Y == 21.
+
+f_ne(X) ->
+ Y = X / 2,
+ Y /= 21.
+
+f_eq_ex(X) ->
+ Y = X / 2,
+ Y =:= 21.
+
+f_ne_ex(X) ->
+ Y = X / 2,
+ Y =/= 21.
+
+f_gt(X) ->
+ Y = X / 2,
+ Y > 21.
+
+f_le(X) ->
+ Y = X / 2,
+ Y =< 21.
+
+g(X, Z) ->
+ Y = X / 2,
+ case Z of
+ test when Y == 0 -> zero_test;
+ test -> non_zero_test;
+ other -> other
+ end.