| Dan Gohman | fa54069 | 2009-09-08 22:57:49 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -indvars -S > %t |
| Dan Gohman | dae43a2 | 2009-06-18 16:54:06 +0000 | [diff] [blame] | 2 | ; RUN: not grep trunc %t |
| 3 | ; RUN: grep and %t | count 1 |
| Dan Gohman | fc4d071 | 2009-06-13 16:25:49 +0000 | [diff] [blame] | 4 | |
| 5 | ; Indvars should do the IV arithmetic in the canonical IV type (i64), |
| 6 | ; and only use one truncation. |
| 7 | |
| 8 | define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind { |
| 9 | entry: |
| 10 | %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1] |
| 11 | br i1 %t0, label %bb.preheader, label %return |
| 12 | |
| 13 | bb.preheader: ; preds = %entry |
| 14 | br label %bb |
| 15 | |
| 16 | bb: ; preds = %bb, %bb.preheader |
| 17 | %i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ] ; <i64> [#uses=3] |
| 18 | %t1 = and i64 %i.01, 255 ; <i64> [#uses=1] |
| 19 | %t2 = getelementptr i64* %A, i64 %t1 ; <i64*> [#uses=1] |
| 20 | store i64 %i.01, i64* %t2, align 8 |
| 21 | %t6 = add i64 %i.01, %s ; <i64> [#uses=1] |
| 22 | br label %bb |
| 23 | |
| 24 | return: ; preds = %entry |
| 25 | ret void |
| 26 | } |