1; RUN: opt -passes='print<loopnest>' %s 2>&1 | FileCheck %s 2@global = external dso_local global [1000 x [1000 x i32]], align 16 3 4; CHECK: IsPerfect=true, Depth=1, OutermostLoop: inner.header, Loops: ( inner.header ) 5; CHECK-NEXT: IsPerfect=true, Depth=2, OutermostLoop: outer.header, Loops: ( outer.header inner.header ) 6 7define void @foo1(i1 %cmp) { 8entry: 9 br i1 %cmp, label %bb1, label %bb1 10 11bb1: ; preds = %entry, %entry 12 br i1 %cmp, label %outer.header.preheader, label %outer.header.preheader 13 14outer.header.preheader: ; preds = %bb1, %bb1 15 br label %outer.header 16 17outer.header: ; preds = %outer.header.preheader, %outer.latch 18 %outer.iv = phi i64 [ %outer.iv.next, %outer.latch ], [ 0, %outer.header.preheader ] 19 br i1 %cmp, label %inner.header.preheader, label %inner.header.preheader 20 21inner.header.preheader: ; preds = %outer.header, %outer.header 22 br label %inner.header 23 24inner.header: ; preds = %inner.header.preheader, %inner.header 25 %inner.iv = phi i64 [ %inner.iv.next, %inner.header ], [ 5, %inner.header.preheader ] 26 %ptr = getelementptr inbounds [1000 x [1000 x i32]], ptr @global, i64 0, i64 %inner.iv, i64 %outer.iv 27 %lv = load i32, ptr %ptr, align 4 28 %v = mul i32 %lv, 100 29 store i32 %v, ptr %ptr, align 4 30 %inner.iv.next = add nsw i64 %inner.iv, 1 31 %cond1 = icmp eq i64 %inner.iv.next, 1000 32 br i1 %cond1, label %outer.latch, label %inner.header 33 34outer.latch: ; preds = %inner.header 35 %outer.iv.next = add nuw nsw i64 %outer.iv, 1 36 %cond2 = icmp eq i64 %outer.iv.next, 1000 37 br i1 %cond2, label %bb9, label %outer.header 38 39bb9: ; preds = %outer.latch 40 br label %bb10 41 42bb10: ; preds = %bb9 43 ret void 44} 45