| Bill Wendling | dc17270 | 2013-08-05 23:43:18 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s |
| Dan Gohman | 52e14d2 | 2009-07-21 00:50:52 +0000 | [diff] [blame] | 2 | ; PR4569 |
| 3 | |
| 4 | define i16 @main() nounwind { |
| 5 | entry: |
| 6 | br label %bb.i |
| 7 | |
| 8 | bb.i: ; preds = %bb1.i, %bb.nph |
| Michael Zolotukhin | 99de88d | 2017-03-16 21:07:38 +0000 | [diff] [blame] | 9 | ; We should be able to find the range for this expression. |
| 10 | ; CHECK: %l_95.0.i1 = phi i8 |
| 11 | ; CHECK: --> {0,+,-1}<%bb.i> U: [2,1) S: [2,1){{ *}}Exits: 2 |
| 12 | |
| Dan Gohman | 52e14d2 | 2009-07-21 00:50:52 +0000 | [diff] [blame] | 13 | %l_95.0.i1 = phi i8 [ %tmp1, %bb.i ], [ 0, %entry ] |
| 14 | |
| 15 | ; This cast shouldn't be folded into the addrec. |
| 16 | ; CHECK: %tmp = zext i8 %l_95.0.i1 to i16 |
| Sanjoy Das | b174f9a | 2015-09-25 23:53:50 +0000 | [diff] [blame] | 17 | ; CHECK: --> (zext i8 {0,+,-1}<nw><%bb.i> to i16){{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 2 |
| Dan Gohman | 52e14d2 | 2009-07-21 00:50:52 +0000 | [diff] [blame] | 18 | |
| 19 | %tmp = zext i8 %l_95.0.i1 to i16 |
| 20 | |
| 21 | %tmp1 = add i8 %l_95.0.i1, -1 |
| 22 | %phitmp = icmp eq i8 %tmp1, 1 |
| 23 | br i1 %phitmp, label %bb1.i.func_36.exit_crit_edge, label %bb.i |
| 24 | |
| 25 | bb1.i.func_36.exit_crit_edge: |
| 26 | ret i16 %tmp |
| 27 | } |