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Diffstat (limited to 'test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll b/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll new file mode 100644 index 0000000..3c1f141 --- /dev/null +++ b/test/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll @@ -0,0 +1,18 @@ +; Test merging of blocks with phi nodes. +; +; RUN: llvm-upgrade < %s | llvm-as | opt -simplifycfg | llvm-dis | not grep N: +; + +int %test(bool %a) { +Q: + br bool %a, label %N, label %M +N: + br label %M +M: + ; It's ok to merge N and M because the incoming values for W are the + ; same for both cases... + %W = phi int [2, %N], [2, %Q] + %R = add int %W, 1 + ret int %R +} + |