| Dan Gohman | e93b1ee | 2009-06-17 20:56:26 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -scalar-evolution -analyze -disable-output | grep {Loop header: backedge-taken count is (0 smax %n)} |
| Wojciech Matyjewicz | ffba5f8 | 2008-02-11 18:37:34 +0000 | [diff] [blame] | 2 | |
| 3 | define void @foo(i32 %n) { |
| 4 | entry: |
| 5 | br label %header |
| 6 | header: |
| 7 | %i = phi i32 [ 0, %entry ], [ %i.inc, %next ] |
| 8 | %cond = icmp sgt i32 %n, %i |
| 9 | br i1 %cond, label %next, label %return |
| 10 | next: |
| 11 | %i.inc = add i32 %i, 1 |
| 12 | br label %header |
| 13 | return: |
| 14 | ret void |
| 15 | } |