; RUN: llvm-as < %s | opt -jump-threading -simplifycfg -mem2reg | llvm-dis | grep {ret i32 %v1} ; There should be no uncond branches left. ; RUN: llvm-as < %s | opt -jump-threading -simplifycfg -mem2reg | llvm-dis | not grep {br label} declare i32 @f1() declare i32 @f2() declare void @f3() define i32 @test(i1 %cond) { 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] br i1 %A, label %T2, label %F2 T2: call void @f3() ret i32 %B F2: ret i32 %B } ;; cond is known false on Entry -> F1 edge! define i32 @test2(i1 %cond) { Entry: br i1 %cond, label %T1, label %F1 T1: %v1 = call i32 @f1() br label %Merge F1: br i1 %cond, label %Merge, label %F2 Merge: %B = phi i32 [47, %T1], [192, %F1] ret i32 %B F2: call void @f3() ret i32 12 }