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| author | Nick Lewycky <nicholas@mxc.ca> | 2008-05-25 23:43:32 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2008-05-25 23:43:32 +0000 |
| commit | 96b3801ab4f71d98cde21255df4f16366ce6cc6c (patch) | |
| tree | 639a4770a7e6192387b9ab0cf06ab96d0c11547d /test/Analysis | |
| parent | adb679290b68c250b2c9dc869e6c60d38cf919a7 (diff) | |
| download | external_llvm-96b3801ab4f71d98cde21255df4f16366ce6cc6c.zip external_llvm-96b3801ab4f71d98cde21255df4f16366ce6cc6c.tar.gz external_llvm-96b3801ab4f71d98cde21255df4f16366ce6cc6c.tar.bz2 | |
Don't treat values as signed when looking at loop steppings in HowForToNonZero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51560 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis')
| -rw-r--r-- | test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll b/test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll new file mode 100644 index 0000000..922d9a9 --- /dev/null +++ b/test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll @@ -0,0 +1,20 @@ +; RUN: llvm-as < %s | opt -analyze -scalar-evolution | grep {61 iterations} + +define i32 @func_6() nounwind { +entry: + br label %bb5 + +bb: ; preds = %bb5 + %tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1] + %tmp4 = add i8 %x.0, -4 ; <i8> [#uses=1] + br label %bb5 + +bb5: ; preds = %bb, %entry + %x.0 = phi i8 [ 0, %entry ], [ %tmp4, %bb ] ; <i8> [#uses=2] + %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=2] + %tmp7 = icmp eq i8 %x.0, 12 ; <i1> [#uses=1] + br i1 %tmp7, label %return, label %bb + +return: ; preds = %bb5 + ret i32 %i.0 +} |