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1; This testcase was extracted from the gzip SPEC benchmark2;3; RUN: opt < %s -passes=adce | FileCheck %s4 5@bk = external global i32 ; <ptr> [#uses=2]6@hufts = external global i32 ; <ptr> [#uses=1]7 8define i32 @inflate() {9bb0:10 br label %bb211 12bb2: ; preds = %bb6, %bb013 %reg128 = phi i32 [ %reg130, %bb6 ], [ 0, %bb0 ] ; <i32> [#uses=2]14 br i1 true, label %bb4, label %bb315 16bb3: ; preds = %bb217 br label %UnifiedExitNode18 19; CHECK-NOT: bb4:20; CHECK-NOT: bb5:21bb4: ; preds = %bb222 %reg117 = load i32, ptr @hufts ; <i32> [#uses=2]23 %cond241 = icmp ule i32 %reg117, %reg128 ; <i1> [#uses=1]24 br i1 %cond241, label %bb6, label %bb525 26bb5: ; preds = %bb427 br label %bb628 29bb6: ; preds = %bb5, %bb430 %reg130 = phi i32 [ %reg117, %bb5 ], [ %reg128, %bb4 ] ; <i32> [#uses=1]31 br i1 false, label %bb2, label %bb732 33bb7: ; preds = %bb634 %reg126 = load i32, ptr @bk ; <i32> [#uses=1]35 %cond247 = icmp ule i32 %reg126, 7 ; <i1> [#uses=1]36 br i1 %cond247, label %bb9, label %bb837 38bb8: ; preds = %bb8, %bb739 %reg119 = load i32, ptr @bk ; <i32> [#uses=1]40 %cond256 = icmp ugt i32 %reg119, 7 ; <i1> [#uses=1]41 br i1 %cond256, label %bb8, label %bb942 43bb9: ; preds = %bb8, %bb744 br label %UnifiedExitNode45 46UnifiedExitNode: ; preds = %bb9, %bb347 %UnifiedRetVal = phi i32 [ 7, %bb3 ], [ 0, %bb9 ] ; <i32> [#uses=1]48 ret i32 %UnifiedRetVal49}50 51