| Cameron Zwarich | c4f3d51 | 2011-02-22 22:25:39 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -loop-deletion -S | FileCheck %s |
| 2 | |
| 3 | ; Checks whether dead loops with multiple exits can be eliminated |
| 4 | |
| 5 | ; CHECK: entry: |
| 6 | ; CHECK-NEXT: br label %return |
| 7 | |
| 8 | ; CHECK: return: |
| 9 | ; CHECK-NEXT: ret void |
| 10 | |
| 11 | define void @foo(i64 %n, i64 %m) nounwind { |
| 12 | entry: |
| 13 | br label %bb |
| 14 | |
| 15 | bb: |
| 16 | %x.0 = phi i64 [ 0, %entry ], [ %t0, %bb2 ] |
| 17 | %t0 = add i64 %x.0, 1 |
| 18 | %t1 = icmp slt i64 %x.0, %n |
| 19 | br i1 %t1, label %bb2, label %return |
| 20 | bb2: |
| 21 | %t2 = icmp slt i64 %x.0, %m |
| 22 | br i1 %t1, label %bb, label %return |
| 23 | |
| 24 | return: |
| 25 | ret void |
| 26 | } |