| Rafael Espindola | dd48931 | 2012-04-30 03:53:06 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-reduce -S | FileCheck %s |
| 2 | |
| 3 | @d = common global i32 0, align 4 |
| 4 | |
| 5 | define void @fn2(i32 %x) nounwind uwtable { |
| 6 | entry: |
| 7 | br label %for.cond |
| 8 | |
| 9 | for.cond: |
| 10 | %g.0 = phi i32 [ 0, %entry ], [ %dec, %for.cond ] |
| 11 | %tobool = icmp eq i32 %x, 0 |
| 12 | %dec = add nsw i32 %g.0, -1 |
| 13 | br i1 %tobool, label %for.cond, label %for.end |
| 14 | |
| 15 | for.end: |
| 16 | ; CHECK: %tmp1 = load i32* @d, align 4 |
| 17 | ; CHECK-NEXT: %tmp2 = load i32* @d, align 4 |
| 18 | ; CHECK-NEXT: %0 = sub i32 %tmp1, %tmp2 |
| 19 | |
| 20 | %tmp1 = load i32* @d, align 4 |
| 21 | %add = add nsw i32 %tmp1, %g.0 |
| 22 | %tmp2 = load i32* @d, align 4 |
| 23 | %tobool26 = icmp eq i32 %x, 0 |
| 24 | br i1 %tobool26, label %for.end5, label %for.body.lr.ph |
| 25 | |
| 26 | for.body.lr.ph: |
| 27 | %tobool3 = icmp ne i32 %tmp2, %add |
| 28 | br label %for.end5 |
| 29 | |
| 30 | for.end5: |
| 31 | ret void |
| 32 | } |
| 33 | |
| 34 | |