| ; RUN: opt -S -licm -loop-unroll < %s |
| ; |
| ; This test contains a carefully rotated set of three nested loops. The middle |
| ; loop can be unrolled leaving one copy of the inner loop inside the outer |
| ; loop. Because of how LICM works, when this middle loop is unrolled and |
| ; removed, its alias set tracker is destroyed and no longer available when LICM |
| ; runs on the outer loop. |
| |
| define void @f() { |
| entry: |
| br label %l1 |
| |
| l2.l1.loopexit_crit_edge: |
| br label %l1.loopexit |
| |
| l1.loopexit: |
| br label %l1.backedge |
| |
| l1: |
| br i1 undef, label %l1.backedge, label %l2.preheader |
| |
| l1.backedge: |
| br label %l1 |
| |
| l2.preheader: |
| br i1 true, label %l1.loopexit, label %l3.preheader.lr.ph |
| |
| l3.preheader.lr.ph: |
| br label %l3.preheader |
| |
| l2.loopexit: |
| br i1 true, label %l2.l1.loopexit_crit_edge, label %l3.preheader |
| |
| l3.preheader: |
| br label %l3 |
| |
| l3: |
| br i1 true, label %l3, label %l2.loopexit |
| } |
