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Diffstat (limited to 'test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll')
| -rw-r--r-- | test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll | 22 |
1 files changed, 22 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..bcc124d --- /dev/null +++ b/test/Analysis/ScalarEvolution/2008-05-25-NegativeStepToZero.ll @@ -0,0 +1,22 @@ +; RUN: opt < %s -analyze -scalar-evolution \ +; RUN: -scalar-evolution-max-iterations=0 | grep {backedge-taken count is 61} +; PR2364 + +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 +} |