| Dan Gohman | a13c92f | 2009-07-21 00:50:52 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -analyze -scalar-evolution -disable-output \ |
| 2 | ; RUN: | FileCheck %s |
| 3 | ; PR4569 |
| 4 | |
| 5 | define i16 @main() nounwind { |
| 6 | entry: |
| 7 | br label %bb.i |
| 8 | |
| 9 | bb.i: ; preds = %bb1.i, %bb.nph |
| 10 | %l_95.0.i1 = phi i8 [ %tmp1, %bb.i ], [ 0, %entry ] |
| 11 | |
| 12 | ; This cast shouldn't be folded into the addrec. |
| 13 | ; CHECK: %tmp = zext i8 %l_95.0.i1 to i16 |
| 14 | ; CHECK: --> (zext i8 {0,+,-1}<bb.i> to i16) Exits: 2 |
| 15 | |
| 16 | %tmp = zext i8 %l_95.0.i1 to i16 |
| 17 | |
| 18 | %tmp1 = add i8 %l_95.0.i1, -1 |
| 19 | %phitmp = icmp eq i8 %tmp1, 1 |
| 20 | br i1 %phitmp, label %bb1.i.func_36.exit_crit_edge, label %bb.i |
| 21 | |
| 22 | bb1.i.func_36.exit_crit_edge: |
| 23 | ret i16 %tmp |
| 24 | } |