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1; RUN: opt < %s -loop-reduce -disable-output2 3define void @try_swap() {4entry:5 br i1 false, label %cond_continue.0.i, label %cond_false.0.i6cond_false.0.i: ; preds = %entry7 ret void8cond_continue.0.i: ; preds = %entry9 br i1 false, label %cond_continue.1.i, label %cond_false.1.i10cond_false.1.i: ; preds = %cond_continue.0.i11 ret void12cond_continue.1.i: ; preds = %cond_continue.0.i13 br i1 false, label %endif.3.i, label %else.0.i14endif.3.i: ; preds = %cond_continue.1.i15 br i1 false, label %my_irand.exit82, label %endif.0.i6216else.0.i: ; preds = %cond_continue.1.i17 ret void18endif.0.i62: ; preds = %endif.3.i19 ret void20my_irand.exit82: ; preds = %endif.3.i21 br i1 false, label %else.2, label %then.422then.4: ; preds = %my_irand.exit8223 ret void24else.2: ; preds = %my_irand.exit8225 br i1 false, label %find_affected_nets.exit, label %loopentry.1.i107.outer.preheader26loopentry.1.i107.outer.preheader: ; preds = %else.227 ret void28find_affected_nets.exit: ; preds = %else.229 br i1 false, label %save_region_occ.exit, label %loopentry.130save_region_occ.exit: ; preds = %find_affected_nets.exit31 br i1 false, label %no_exit.1.preheader, label %loopexit.132loopentry.1: ; preds = %find_affected_nets.exit33 ret void34no_exit.1.preheader: ; preds = %save_region_occ.exit35 ret void36loopexit.1: ; preds = %save_region_occ.exit37 br i1 false, label %then.10, label %loopentry.338then.10: ; preds = %loopexit.139 ret void40loopentry.3: ; preds = %endif.16, %loopexit.141 %indvar342 = phi i32 [ %indvar.next343, %endif.16 ], [ 0, %loopexit.1 ] ; <i32> [#uses=2]42 br i1 false, label %loopexit.3, label %endif.1643endif.16: ; preds = %loopentry.344 %indvar.next343 = add i32 %indvar342, 1 ; <i32> [#uses=1]45 br label %loopentry.346loopexit.3: ; preds = %loopentry.347 br label %loopentry.448loopentry.4: ; preds = %loopentry.4, %loopexit.349 %indvar340 = phi i32 [ 0, %loopexit.3 ], [ %indvar.next341, %loopentry.4 ] ; <i32> [#uses=2]50 %tmp. = add i32 %indvar340, %indvar342 ; <i32> [#uses=1]51 %tmp.526 = load ptr, ptr null ; <ptr> [#uses=1]52 %gep.upgrd.1 = zext i32 %tmp. to i64 ; <i64> [#uses=1]53 %tmp.528 = getelementptr i32, ptr %tmp.526, i64 %gep.upgrd.1 ; <ptr> [#uses=1]54 store i32 0, ptr %tmp.52855 %indvar.next341 = add i32 %indvar340, 1 ; <i32> [#uses=1]56 br label %loopentry.457}58