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1; This testcase contains a entire loop that should be removed. The only thing2; left is the store instruction in BB0. The problem this testcase was running3; into was that when the reg109 PHI was getting zero predecessors, it was4; removed even though there were uses still around. Now the uses are filled5; in with a dummy value before the PHI is deleted.6;7; RUN: opt < %s -S -passes=adce | grep bb18; RUN: opt < %s -S -passes=adce -adce-remove-loops | FileCheck %s9 10 %node_t = type { ptr, ptr, ptr, ptr, ptr, i32, i32 }11 12define void @localize_local(ptr %nodelist) {13bb0:14 %nodelist.upgrd.1 = alloca ptr ; <ptr> [#uses=2]15 store ptr %nodelist, ptr %nodelist.upgrd.116 br label %bb117 18bb1: ; preds = %bb019 %reg107 = load ptr, ptr %nodelist.upgrd.1 ; <ptr> [#uses=2]20 %cond211 = icmp eq ptr %reg107, null ; <i1> [#uses=1]21; CHECK: br label %bb322 br i1 %cond211, label %bb3, label %bb223 24bb2: ; preds = %bb2, %bb125 %reg109 = phi ptr [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <ptr> [#uses=1]26 %reg212 = getelementptr %node_t, ptr %reg109, i64 0, i32 1 ; <ptr> [#uses=1]27 %reg110 = load ptr, ptr %reg212 ; <ptr> [#uses=2]28 %cond213 = icmp ne ptr %reg110, null ; <i1> [#uses=1]29; CHECK: br label %bb330 br i1 %cond213, label %bb2, label %bb331 32bb3: ; preds = %bb2, %bb133 ret void34}35 36