| Evan Cheng | 81ebdcf | 2009-11-10 21:14:05 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-reduce -S | FileCheck %s |
| 2 | ; rdar://7382068 |
| 3 | |
| 4 | define void @t(i32 %c) nounwind optsize { |
| 5 | entry: |
| 6 | br label %bb6 |
| 7 | |
| 8 | bb1: ; preds = %bb6 |
| 9 | %tmp = icmp eq i32 %c_addr.1, 20 ; <i1> [#uses=1] |
| 10 | br i1 %tmp, label %bb2, label %bb3 |
| 11 | |
| 12 | bb2: ; preds = %bb1 |
| 13 | %tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1] |
| 14 | br label %bb7 |
| 15 | |
| 16 | bb3: ; preds = %bb1 |
| 17 | %tmp2 = icmp slt i32 %c_addr.1, 10 ; <i1> [#uses=1] |
| 18 | %tmp3 = add nsw i32 %c_addr.1, 1 ; <i32> [#uses=1] |
| 19 | %tmp4 = add i32 %c_addr.1, -1 ; <i32> [#uses=1] |
| 20 | %c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1] |
| 21 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| Dan Gohman | 572645c | 2010-02-12 10:34:29 +0000 | [diff] [blame^] | 22 | ; CHECK: add i32 %lsr.iv, -1 |
| Evan Cheng | 81ebdcf | 2009-11-10 21:14:05 +0000 | [diff] [blame] | 23 | br label %bb6 |
| 24 | |
| 25 | bb6: ; preds = %bb3, %entry |
| 26 | %indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2] |
| 27 | %c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7] |
| 28 | %tmp5 = icmp eq i32 %indvar, 9999 ; <i1> [#uses=1] |
| 29 | ; CHECK: icmp eq i32 %lsr.iv, 0 |
| 30 | %tmp6 = icmp eq i32 %c_addr.1, 100 ; <i1> [#uses=1] |
| 31 | %or.cond = or i1 %tmp5, %tmp6 ; <i1> [#uses=1] |
| 32 | br i1 %or.cond, label %bb7, label %bb1 |
| 33 | |
| 34 | bb7: ; preds = %bb6, %bb2 |
| 35 | %c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1] |
| 36 | tail call void @bar(i32 %c_addr.0) nounwind |
| 37 | ret void |
| 38 | } |
| 39 | |
| 40 | declare i32 @f20(i32) |
| 41 | |
| 42 | declare void @bar(i32) |