| Dan Gohman | 1b4c2777 | 2009-09-08 16:50:01 +0000 | [diff] [blame^] | 1 | ; RUN: opt %s -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 | } | ||||