diff --git a/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll b/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll new file mode 100644 index 00000000000..4ddb3f15147 --- /dev/null +++ b/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll @@ -0,0 +1,33 @@ +; This testcase contains a entire loop that should be removed. The only thing +; left is the store instruction in BB0. The problem this testcase was running +; into was that when the reg109 PHI was getting zero predecessors, it was +; removed even though there were uses still around. Now the uses are filled +; in with a dummy value before the PHI is deleted. +; +; RUN: as < %s | opt -adce + +%node_t = type { double*, %node_t*, %node_t**, double**, double*, int, int } + +implementation ; Functions: + +void %localize_local(%node_t* %nodelist) { +bb0: ;[#uses=0] + %nodelist = alloca %node_t* ; <%node_t**> [#uses=2] + store %node_t* %nodelist, %node_t** %nodelist + br label %bb1 + +bb1: ;[#uses=2] + %reg107 = load %node_t** %nodelist, uint 0 ; <%node_t*> [#uses=2] + %cond211 = seteq %node_t* %reg107, null ; [#uses=1] + br bool %cond211, label %bb3, label %bb2 + +bb2: ;[#uses=3] + %reg109 = phi %node_t* [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <%node_t*> [#uses=1] + %reg212 = getelementptr %node_t* %reg109, uint 0, ubyte 1 ; <%node_t**> [#uses=1] + %reg110 = load %node_t** %reg212 ; <%node_t*> [#uses=2] + %cond213 = setne %node_t* %reg110, null ; [#uses=1] + br bool %cond213, label %bb2, label %bb3 + +bb3: ;[#uses=2] + ret void +}