| Dan Gohman | 3c7d308 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -analyze -scalar-evolution -disable-output |& not grep smax |
| Nick Lewycky | 1b020bf | 2008-07-12 07:41:32 +0000 | [diff] [blame] | 2 | ; PR2070 |
| 3 | |
| 4 | define i32 @a(i32 %x) nounwind { |
| 5 | entry: |
| 6 | icmp sgt i32 %x, 1 ; <i1>:0 [#uses=1] |
| 7 | br i1 %0, label %bb.nph, label %bb2 |
| 8 | |
| 9 | bb.nph: ; preds = %entry |
| 10 | br label %bb |
| 11 | |
| 12 | bb: ; preds = %bb1, %bb.nph |
| 13 | %z.02 = phi i32 [ %1, %bb1 ], [ 1, %bb.nph ] ; <i32> [#uses=1] |
| 14 | %i.01 = phi i32 [ %2, %bb1 ], [ 1, %bb.nph ] ; <i32> [#uses=2] |
| 15 | mul i32 %z.02, %i.01 ; <i32>:1 [#uses=2] |
| 16 | add i32 %i.01, 1 ; <i32>:2 [#uses=2] |
| 17 | br label %bb1 |
| 18 | |
| 19 | bb1: ; preds = %bb |
| 20 | icmp slt i32 %2, %x ; <i1>:3 [#uses=1] |
| 21 | br i1 %3, label %bb, label %bb1.bb2_crit_edge |
| 22 | |
| 23 | bb1.bb2_crit_edge: ; preds = %bb1 |
| 24 | %.lcssa = phi i32 [ %1, %bb1 ] ; <i32> [#uses=1] |
| 25 | br label %bb2 |
| 26 | |
| 27 | bb2: ; preds = %bb1.bb2_crit_edge, %entry |
| 28 | %z.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ 1, %entry ] ; <i32> [#uses=1] |
| 29 | ret i32 %z.0.lcssa |
| 30 | } |