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Diffstat (limited to 'test/Transforms/ADCE/2002-07-17-PHIAssertion.ll')
| -rw-r--r-- | test/Transforms/ADCE/2002-07-17-PHIAssertion.ll | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/test/Transforms/ADCE/2002-07-17-PHIAssertion.ll b/test/Transforms/ADCE/2002-07-17-PHIAssertion.ll new file mode 100644 index 0000000..2f0df67 --- /dev/null +++ b/test/Transforms/ADCE/2002-07-17-PHIAssertion.ll @@ -0,0 +1,48 @@ +; This testcase was extracted from the gzip SPEC benchmark +; +; RUN: opt < %s -adce + +@bk = external global i32 ; <i32*> [#uses=2] +@hufts = external global i32 ; <i32*> [#uses=1] + +define i32 @inflate() { +bb0: + br label %bb2 + +bb2: ; preds = %bb6, %bb0 + %reg128 = phi i32 [ %reg130, %bb6 ], [ 0, %bb0 ] ; <i32> [#uses=2] + br i1 true, label %bb4, label %bb3 + +bb3: ; preds = %bb2 + br label %UnifiedExitNode + +bb4: ; preds = %bb2 + %reg117 = load i32* @hufts ; <i32> [#uses=2] + %cond241 = icmp ule i32 %reg117, %reg128 ; <i1> [#uses=1] + br i1 %cond241, label %bb6, label %bb5 + +bb5: ; preds = %bb4 + br label %bb6 + +bb6: ; preds = %bb5, %bb4 + %reg130 = phi i32 [ %reg117, %bb5 ], [ %reg128, %bb4 ] ; <i32> [#uses=1] + br i1 false, label %bb2, label %bb7 + +bb7: ; preds = %bb6 + %reg126 = load i32* @bk ; <i32> [#uses=1] + %cond247 = icmp ule i32 %reg126, 7 ; <i1> [#uses=1] + br i1 %cond247, label %bb9, label %bb8 + +bb8: ; preds = %bb8, %bb7 + %reg119 = load i32* @bk ; <i32> [#uses=1] + %cond256 = icmp ugt i32 %reg119, 7 ; <i1> [#uses=1] + br i1 %cond256, label %bb8, label %bb9 + +bb9: ; preds = %bb8, %bb7 + br label %UnifiedExitNode + +UnifiedExitNode: ; preds = %bb9, %bb3 + %UnifiedRetVal = phi i32 [ 7, %bb3 ], [ 0, %bb9 ] ; <i32> [#uses=1] + ret i32 %UnifiedRetVal +} + |