diff options
| -rw-r--r-- | test/Transforms/CondProp/phisimplify.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/Transforms/CondProp/phisimplify.ll b/test/Transforms/CondProp/phisimplify.ll new file mode 100644 index 0000000..818bcab --- /dev/null +++ b/test/Transforms/CondProp/phisimplify.ll @@ -0,0 +1,33 @@ +; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi + +int %test(uint %C, bool %Val) { + switch uint %C, label %T1 [ + uint 4, label %T2 + uint 17, label %T3 + ] +T1: + call void %a() + br label %Cont +T2: + call void %b() + br label %Cont +T3: + call void %c() + br label %Cont + +Cont: + ;; PHI becomes dead after threading T2 + %C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3] + br bool %C2, label %L2, label %F2 +L2: + call void %d() + ret int 17 +F2: + call void %e() + ret int 1 +} +declare void %a() +declare void %b() +declare void %c() +declare void %d() +declare void %e() |