diff options
Diffstat (limited to 'llvm/test/Transforms/LevelRaise/2002-03-14-ConvertableToGEPHang.ll')
| -rw-r--r-- | llvm/test/Transforms/LevelRaise/2002-03-14-ConvertableToGEPHang.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LevelRaise/2002-03-14-ConvertableToGEPHang.ll b/llvm/test/Transforms/LevelRaise/2002-03-14-ConvertableToGEPHang.ll new file mode 100644 index 00000000000..895d5ae1109 --- /dev/null +++ b/llvm/test/Transforms/LevelRaise/2002-03-14-ConvertableToGEPHang.ll @@ -0,0 +1,24 @@ +; This testcase found a bug in ConvertableToGEP that could cause an infinite loop +; Note that this code is actually miscompiled from the input source, but despite +; that, level raise should not hang! +; +; RUN: llvm-upgrade < %s | llvm-as | opt -raise + + %Disjunct = type { \2 *, short, sbyte, sbyte *, { short, short, sbyte, sbyte, \2, sbyte * } *, { short, short, sbyte, sbyte, \2, sbyte * } * } +%chosen_disjuncts = uninitialized global %Disjunct * * ; <%Disjunct * * *> [#uses=1] +implementation + +void "build_image_array"() +begin +bb0: ;[#uses=0] + %reg109 = getelementptr %Disjunct * * * %chosen_disjuncts, long 7 ; <%Disjunct * * *> [#uses=1] + %reg108 = load %Disjunct * * * %reg109 ; <%Disjunct * *> [#uses=1] + %reg1000 = getelementptr %Disjunct * * %reg108, long 3 ; <%Disjunct * *> [#uses=1] + %cast1007 = cast %Disjunct * * %reg1000 to sbyte * * ; <sbyte * *> [#uses=1] + %reg110 = load sbyte * * %cast1007 ; <sbyte *> [#uses=1] + %cast1008 = cast ulong 4 to sbyte * ; <sbyte *> [#uses=1] + %A = cast sbyte * %reg110 to ulong + %B = cast sbyte * %cast1008 to ulong + %reg1001 = add ulong %A, %B ; <sbyte *> [#uses=0] + ret void +end |
