diff options
Diffstat (limited to 'test/Transforms/JumpThreading/and-cond.ll')
-rw-r--r-- | test/Transforms/JumpThreading/and-cond.ll | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/Transforms/JumpThreading/and-cond.ll b/test/Transforms/JumpThreading/and-cond.ll new file mode 100644 index 0000000..b01c4ba --- /dev/null +++ b/test/Transforms/JumpThreading/and-cond.ll @@ -0,0 +1,32 @@ +; RUN: llvm-as < %s | opt -jump-threading -mem2reg -instcombine -simplifycfg | llvm-dis | grep {ret i32 %v1} +; There should be no uncond branches left. +; RUN: llvm-as < %s | opt -jump-threading -mem2reg -instcombine -simplifycfg | llvm-dis | not grep {br label} + +declare i32 @f1() +declare i32 @f2() +declare void @f3() + +define i32 @test(i1 %cond, i1 %cond2) { + br i1 %cond, label %T1, label %F1 + +T1: + %v1 = call i32 @f1() + br label %Merge + +F1: + %v2 = call i32 @f2() + br label %Merge + +Merge: + %A = phi i1 [true, %T1], [false, %F1] + %B = phi i32 [%v1, %T1], [%v2, %F1] + %C = and i1 %A, %cond2 + br i1 %C, label %T2, label %F2 + +T2: + call void @f3() + ret i32 %B + +F2: + ret i32 %B +} |