| ; RUN: opt -passes='print<loopnest>' %s 2>&1 | FileCheck %s |
| @global = external dso_local global [1000 x [1000 x i32]], align 16 |
| |
| ; CHECK: IsPerfect=true, Depth=1, OutermostLoop: inner.header, Loops: ( inner.header ) |
| ; CHECK-NEXT: IsPerfect=true, Depth=2, OutermostLoop: outer.header, Loops: ( outer.header inner.header ) |
| |
| define void @foo1(i1 %cmp) { |
| entry: |
| br i1 %cmp, label %bb1, label %bb1 |
| |
| bb1: ; preds = %entry, %entry |
| br i1 %cmp, label %outer.header.preheader, label %outer.header.preheader |
| |
| outer.header.preheader: ; preds = %bb1, %bb1 |
| br label %outer.header |
| |
| outer.header: ; preds = %outer.header.preheader, %outer.latch |
| %outer.iv = phi i64 [ %outer.iv.next, %outer.latch ], [ 0, %outer.header.preheader ] |
| br i1 %cmp, label %inner.header.preheader, label %inner.header.preheader |
| |
| inner.header.preheader: ; preds = %outer.header, %outer.header |
| br label %inner.header |
| |
| inner.header: ; preds = %inner.header.preheader, %inner.header |
| %inner.iv = phi i64 [ %inner.iv.next, %inner.header ], [ 5, %inner.header.preheader ] |
| %ptr = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* @global, i64 0, i64 %inner.iv, i64 %outer.iv |
| %lv = load i32, i32* %ptr, align 4 |
| %v = mul i32 %lv, 100 |
| store i32 %v, i32* %ptr, align 4 |
| %inner.iv.next = add nsw i64 %inner.iv, 1 |
| %cond1 = icmp eq i64 %inner.iv.next, 1000 |
| br i1 %cond1, label %outer.latch, label %inner.header |
| |
| outer.latch: ; preds = %inner.header |
| %outer.iv.next = add nuw nsw i64 %outer.iv, 1 |
| %cond2 = icmp eq i64 %outer.iv.next, 1000 |
| br i1 %cond2, label %bb9, label %outer.header |
| |
| bb9: ; preds = %outer.latch |
| br label %bb10 |
| |
| bb10: ; preds = %bb9 |
| ret void |
| } |