| Owen Anderson | f41fcbb | 2009-04-01 01:20:45 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep {br i1 false} |
| 2 | |
| 3 | @a = external global i32 ; <i32*> [#uses=7] |
| 4 | |
| 5 | define i32 @foo() nounwind { |
| 6 | entry: |
| 7 | %0 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 8 | %1 = icmp eq i32 %0, 4 ; <i1> [#uses=1] |
| 9 | br i1 %1, label %bb, label %bb1 |
| 10 | |
| 11 | bb: ; preds = %entry |
| 12 | br label %bb8 |
| 13 | |
| 14 | bb1: ; preds = %entry |
| 15 | %2 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 16 | %3 = icmp eq i32 %2, 5 ; <i1> [#uses=1] |
| 17 | br i1 %3, label %bb2, label %bb3 |
| 18 | |
| 19 | bb2: ; preds = %bb1 |
| 20 | br label %bb8 |
| 21 | |
| 22 | bb3: ; preds = %bb1 |
| 23 | %4 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 24 | %5 = icmp eq i32 %4, 4 ; <i1> [#uses=1] |
| 25 | br i1 %5, label %bb4, label %bb5 |
| 26 | |
| 27 | bb4: ; preds = %bb3 |
| 28 | %6 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 29 | %7 = add i32 %6, 5 ; <i32> [#uses=1] |
| 30 | br label %bb8 |
| 31 | |
| 32 | bb5: ; preds = %bb3 |
| 33 | %8 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 34 | %9 = icmp eq i32 %8, 5 ; <i1> [#uses=1] |
| 35 | br i1 %9, label %bb6, label %bb7 |
| 36 | |
| 37 | bb6: ; preds = %bb5 |
| 38 | %10 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 39 | %11 = add i32 %10, 4 ; <i32> [#uses=1] |
| 40 | br label %bb8 |
| 41 | |
| 42 | bb7: ; preds = %bb5 |
| 43 | %12 = load i32* @a, align 4 ; <i32> [#uses=1] |
| 44 | br label %bb8 |
| 45 | |
| 46 | bb8: ; preds = %bb7, %bb6, %bb4, %bb2, %bb |
| 47 | %.0 = phi i32 [ %12, %bb7 ], [ %11, %bb6 ], [ %7, %bb4 ], [ 4, %bb2 ], [ 5, %bb ] ; <i32> [#uses=1] |
| 48 | br label %return |
| 49 | |
| 50 | return: ; preds = %bb8 |
| 51 | ret i32 %.0 |
| 52 | } |