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| author | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
| commit | cbb70ce070d220642b038ea101d9c0f9fbf860d6 (patch) | |
| tree | d2b61ce94e654cb01a254d2195259db5f9cc3f3c /test/Transforms/JumpThreading/degenerate-phi.ll | |
| parent | 4ace901e87dac5bbbac78ed325e75462e48e386e (diff) | |
| download | FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.zip FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.tar.gz | |
Vendor import of llvm trunk r126079:
http://llvm.org/svn/llvm-project/llvm/trunk@126079
Diffstat (limited to 'test/Transforms/JumpThreading/degenerate-phi.ll')
| -rw-r--r-- | test/Transforms/JumpThreading/degenerate-phi.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/JumpThreading/degenerate-phi.ll b/test/Transforms/JumpThreading/degenerate-phi.ll new file mode 100644 index 0000000..35d9fde --- /dev/null +++ b/test/Transforms/JumpThreading/degenerate-phi.ll @@ -0,0 +1,24 @@ +; RUN: opt -jump-threading -disable-output %s +; PR9112 + +; This is actually a test for value tracking. Jump threading produces +; "%phi = phi i16" when it removes all edges leading to %unreachable. +; The .ll parser won't let us write that directly since it's invalid code. + +define void @func() nounwind { +entry: + br label %bb + +bb: + br label %bb + +unreachable: + %phi = phi i16 [ %add, %unreachable ], [ 0, %next ] + %add = add i16 0, %phi + %cmp = icmp slt i16 %phi, 0 + br i1 %cmp, label %unreachable, label %next + +next: + br label %unreachable +} + |
