diff --git a/test/Transforms/TailCallElim/tail_call_with_branch.ll b/test/Transforms/TailCallElim/tail_call_with_branch.ll new file mode 100644 index 00000000000..de606fc2314 --- /dev/null +++ b/test/Transforms/TailCallElim/tail_call_with_branch.ll @@ -0,0 +1,31 @@ +; This testcase is due to tail-duplication not wanting to copy the return +; instruction into the terminating blocks because there was other code +; optimized out of the function after the taildup happened. + +; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call + +int %t4(int %a) { +entry: + %tmp.1 = and int %a, 1 + %tmp.2 = cast int %tmp.1 to bool + br bool %tmp.2, label %then.0, label %else.0 + +then.0: + %tmp.5 = add int %a, -1 + %tmp.3 = call int %t4( int %tmp.5 ) + br label %return + +else.0: + %tmp.7 = setne int %a, 0 + br bool %tmp.7, label %then.1, label %return + +then.1: + %tmp.11 = add int %a, -2 + %tmp.9 = call int %t4( int %tmp.11 ) + br label %return + +return: + %result.0 = phi int [ 0, %else.0 ], [ %tmp.3, %then.0 ], [ %tmp.9, %then.1 ] + ret int %result.0 +} +