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| author | Chris Lattner <sabre@nondot.org> | 2003-03-05 20:22:50 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-03-05 20:22:50 +0000 |
| commit | a8bda21c8d6a0f6552414d99fe6213855f584a2d (patch) | |
| tree | 5216a4513d2b664df0f8291de777dfcbc9209072 /test/Transforms/SimplifyCFG/PhiBlockMerge.ll | |
| parent | 9f6487563c0ea0e80b8c18a0e68fed4ade43f269 (diff) | |
| download | external_llvm-a8bda21c8d6a0f6552414d99fe6213855f584a2d.zip external_llvm-a8bda21c8d6a0f6552414d99fe6213855f584a2d.tar.gz external_llvm-a8bda21c8d6a0f6552414d99fe6213855f584a2d.tar.bz2 | |
Add testcase for new feature for simplifycfg pass
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5697 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyCFG/PhiBlockMerge.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/PhiBlockMerge.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/PhiBlockMerge.ll b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll new file mode 100644 index 0000000..d1df2a1 --- /dev/null +++ b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll @@ -0,0 +1,26 @@ +; Test merging of blocks that only have PHI nodes in them +; +; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:' +; RUN: then exit 1 +; RUN: else exit 0 +; RUN: fi +; + +int %test(bool %a, bool %b) { + br bool %a, label %M, label %O + +O: + br bool %b, label %N, label %Q +Q: + br label %N +N: + %Wp = phi int [0, %O], [1, %Q] + ; This block should be foldable into M + br label %M + +M: + %W = phi int [%Wp, %N], [2, %0] + %R = add int %W, 1 + ret int %R +} + |