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| author | Bob Wilson <bob.wilson@apple.com> | 2010-03-31 21:38:43 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-03-31 21:38:43 +0000 |
| commit | 368454976cf75369e78fb4c24e78e4bc6b15def2 (patch) | |
| tree | a7c5397b7c5befadcab6db3334447a8435f919d6 /test/Transforms/GVN | |
| parent | a88cb38d0220d5b0e4394f3280e1cec5f30ef4fc (diff) | |
| download | llvm-368454976cf75369e78fb4c24e78e4bc6b15def2.tar.gz llvm-368454976cf75369e78fb4c24e78e4bc6b15def2.tar.bz2 llvm-368454976cf75369e78fb4c24e78e4bc6b15def2.tar.xz | |
Add a redundant PHI testcase for SSAUpdater to go with svn r100047.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100050 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GVN')
| -rw-r--r-- | test/Transforms/GVN/2010-03-31-RedundantPHIs.ll | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll b/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll new file mode 100644 index 0000000000..066e3038b0 --- /dev/null +++ b/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll @@ -0,0 +1,46 @@ +; RUN: opt < %s -gvn -enable-full-load-pre -S | FileCheck %s + +define i8* @cat(i8* %s1, ...) nounwind { +entry: + br i1 undef, label %bb, label %bb3 + +bb: ; preds = %entry + unreachable + +bb3: ; preds = %entry + store i8* undef, i8** undef, align 4 + br i1 undef, label %bb5, label %bb6 + +bb5: ; preds = %bb3 + unreachable + +bb6: ; preds = %bb3 + br label %bb12 + +bb8: ; preds = %bb12 + br i1 undef, label %bb9, label %bb10 + +bb9: ; preds = %bb8 + %0 = load i8** undef, align 4 ; <i8*> [#uses=0] + %1 = load i8** undef, align 4 ; <i8*> [#uses=0] + br label %bb11 + +bb10: ; preds = %bb8 + br label %bb11 + +bb11: ; preds = %bb10, %bb9 +; CHECK: bb11: +; CHECK: phi +; CHECK-NOT: phi + br label %bb12 + +bb12: ; preds = %bb11, %bb6 +; CHECK: bb12: +; CHECK: phi +; CHECK-NOT: phi + br i1 undef, label %bb8, label %bb13 + +bb13: ; preds = %bb12 +; CHECK: bb13: + ret i8* undef +} |