| Dan Gohman | f2f6ce6 | 2009-09-11 18:01:28 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -loop-reduce | llvm-dis |
| Evan Cheng | 5a6c1a8 | 2009-02-17 00:13:06 +0000 | [diff] [blame] | 2 | ; PR3399 |
| 3 | |
| 4 | @g_53 = external global i32 ; <i32*> [#uses=1] |
| 5 | |
| 6 | define i32 @foo() nounwind { |
| 7 | bb5.thread: |
| 8 | br label %bb |
| 9 | |
| 10 | bb: ; preds = %bb5, %bb5.thread |
| 11 | %indvar = phi i32 [ 0, %bb5.thread ], [ %indvar.next, %bb5 ] ; <i32> [#uses=2] |
| 12 | br i1 false, label %bb5, label %bb1 |
| 13 | |
| 14 | bb1: ; preds = %bb |
| 15 | %l_2.0.reg2mem.0 = sub i32 0, %indvar ; <i32> [#uses=1] |
| 16 | %0 = volatile load i32* @g_53, align 4 ; <i32> [#uses=1] |
| 17 | %1 = trunc i32 %l_2.0.reg2mem.0 to i16 ; <i16> [#uses=1] |
| 18 | %2 = trunc i32 %0 to i16 ; <i16> [#uses=1] |
| 19 | %3 = mul i16 %2, %1 ; <i16> [#uses=1] |
| 20 | %4 = icmp eq i16 %3, 0 ; <i1> [#uses=1] |
| 21 | br i1 %4, label %bb7, label %bb2 |
| 22 | |
| 23 | bb2: ; preds = %bb2, %bb1 |
| 24 | br label %bb2 |
| 25 | |
| 26 | bb5: ; preds = %bb |
| 27 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| 28 | br label %bb |
| 29 | |
| 30 | bb7: ; preds = %bb1 |
| 31 | ret i32 1 |
| 32 | } |