| Dan Gohman | fc4d071 | 2009-06-13 16:25:49 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep trunc | count 1 |
| 2 | |
| 3 | ; Indvars should do the IV arithmetic in the canonical IV type (i64), |
| 4 | ; and only use one truncation. |
| 5 | |
| 6 | define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind { |
| 7 | entry: |
| 8 | %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1] |
| 9 | br i1 %t0, label %bb.preheader, label %return |
| 10 | |
| 11 | bb.preheader: ; preds = %entry |
| 12 | br label %bb |
| 13 | |
| 14 | bb: ; preds = %bb, %bb.preheader |
| 15 | %i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ] ; <i64> [#uses=3] |
| 16 | %t1 = and i64 %i.01, 255 ; <i64> [#uses=1] |
| 17 | %t2 = getelementptr i64* %A, i64 %t1 ; <i64*> [#uses=1] |
| 18 | store i64 %i.01, i64* %t2, align 8 |
| 19 | %t6 = add i64 %i.01, %s ; <i64> [#uses=1] |
| 20 | br label %bb |
| 21 | |
| 22 | return: ; preds = %entry |
| 23 | ret void |
| 24 | } |