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| -rw-r--r-- | llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll b/llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll new file mode 100644 index 00000000000..904194d9973 --- /dev/null +++ b/llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll @@ -0,0 +1,39 @@ +; REQUIRES: asserts +; RUN: opt -regions -analyze < %s | FileCheck %s +; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s + +; While working on improvements to region info analysis, this test +; case caused an incorrect region bb2 => bb3 to be detected. + +define internal i8 @main_read() nounwind { +bb: + br label %bb1 + +bb1: + br i1 true, label %bb2, label %bb7 + +bb2: + br i1 true, label %bb4, label %bb3 + +bb3: + br i1 true, label %bb4, label %bb8 + +bb4: + br label %bb5 + +bb5: + br label %bb6 + +bb6: + br label %bb1 + +bb7: + br label %bb5 + +bb8: + ret i8 1 +} + +; CHECK: [0] bb => <Function Return> +; CHECK-NEXT: [1] bb1 => bb8 +; CHECK-NEXT: End Region tree |
