| Krzysztof Parzyszek | d67ab62 | 2017-02-02 19:36:37 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon < %s |
| 2 | ; REQUIRES: asserts |
| 3 | |
| 4 | ; This code causes multiple endloop instructions to be generated for the |
| 5 | ; same loop. The findLoopInstr would encounter for one endloop would encounter |
| 6 | ; the other endloop, and return null in response. This resulted in a crash. |
| 7 | ; |
| 8 | ; Check that with the fix we are able to compile this code successfully. |
| 9 | |
| 10 | target triple = "hexagon" |
| 11 | |
| 12 | ; Function Attrs: norecurse |
| 13 | define void @fred() local_unnamed_addr #0 align 2 { |
| 14 | b0: |
| 15 | br label %b7 |
| 16 | |
| 17 | b1: ; preds = %b9 |
| 18 | br i1 undef, label %b4, label %b2 |
| 19 | |
| 20 | b2: ; preds = %b1 |
| 21 | %v3 = sub i32 undef, undef |
| 22 | br label %b4 |
| 23 | |
| 24 | b4: ; preds = %b2, %b1 |
| 25 | %v5 = phi i32 [ undef, %b1 ], [ %v3, %b2 ] |
| 26 | br i1 undef, label %b14, label %b6 |
| 27 | |
| 28 | b6: ; preds = %b4 |
| 29 | br label %b10 |
| 30 | |
| 31 | b7: ; preds = %b0 |
| 32 | br i1 undef, label %b9, label %b8 |
| 33 | |
| 34 | b8: ; preds = %b7 |
| 35 | unreachable |
| 36 | |
| 37 | b9: ; preds = %b7 |
| 38 | br label %b1 |
| 39 | |
| 40 | b10: ; preds = %b21, %b6 |
| 41 | %v11 = phi i32 [ %v22, %b21 ], [ %v5, %b6 ] |
| 42 | br i1 undef, label %b21, label %b12 |
| 43 | |
| 44 | b12: ; preds = %b10 |
| 45 | br label %b15 |
| 46 | |
| 47 | b13: ; preds = %b21 |
| 48 | br label %b14 |
| 49 | |
| 50 | b14: ; preds = %b13, %b4 |
| 51 | ret void |
| 52 | |
| 53 | b15: ; preds = %b12 |
| 54 | br i1 undef, label %b16, label %b17 |
| 55 | |
| 56 | b16: ; preds = %b15 |
| 57 | store i32 0, i32* undef, align 4 |
| 58 | br label %b21 |
| 59 | |
| 60 | b17: ; preds = %b15 |
| 61 | br label %b18 |
| 62 | |
| 63 | b18: ; preds = %b17 |
| 64 | br i1 undef, label %b19, label %b20 |
| 65 | |
| 66 | b19: ; preds = %b18 |
| 67 | br label %b21 |
| 68 | |
| 69 | b20: ; preds = %b18 |
| 70 | store i32 0, i32* undef, align 4 |
| 71 | br label %b21 |
| 72 | |
| 73 | b21: ; preds = %b20, %b19, %b16, %b10 |
| 74 | %v22 = add i32 %v11, -8 |
| 75 | %v23 = icmp eq i32 %v22, 0 |
| 76 | br i1 %v23, label %b13, label %b10 |
| 77 | } |
| 78 | |
| Sumanth Gundapaneni | e1983bc | 2017-10-18 18:07:07 +0000 | [diff] [blame] | 79 | attributes #0 = { norecurse "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" } |