| ; 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 | |
| } |