| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon -machine-sink-split < %s |
| 2 | ; REQUIRES: asserts |
| 3 | ; MachineSink should not sink an MI which is used in a non-phi instruction |
| 4 | ; in an MBB with multiple predecessors. |
| 5 | |
| 6 | target triple = "hexagon-unknown--elf" |
| 7 | |
| 8 | ; Function Attrs: nounwind |
| 9 | define void @f0() #0 { |
| 10 | b0: |
| 11 | br i1 undef, label %b1, label %b2 |
| 12 | |
| 13 | b1: ; preds = %b0 |
| 14 | unreachable |
| 15 | |
| 16 | b2: ; preds = %b0 |
| 17 | %v0 = load i8*, i8** undef, align 4 |
| 18 | %v1 = getelementptr inbounds i8, i8* %v0, i32 1 |
| 19 | %v2 = load i8, i8* %v0, align 1, !tbaa !0 |
| 20 | %v3 = zext i8 %v2 to i32 |
| 21 | %v4 = shl nuw nsw i32 %v3, 8 |
| 22 | br i1 undef, label %b3, label %b5 |
| 23 | |
| 24 | b3: ; preds = %b2 |
| 25 | br i1 undef, label %b15, label %b4 |
| 26 | |
| 27 | b4: ; preds = %b3 |
| 28 | br label %b5 |
| 29 | |
| 30 | b5: ; preds = %b4, %b2 |
| 31 | %v5 = phi i8* [ undef, %b4 ], [ %v1, %b2 ] |
| 32 | %v6 = load i8, i8* %v5, align 1, !tbaa !0 |
| 33 | %v7 = zext i8 %v6 to i32 |
| 34 | %v8 = add nsw i32 %v7, %v4 |
| 35 | %v9 = add nsw i32 %v8, -2 |
| 36 | br label %b6 |
| 37 | |
| 38 | b6: ; preds = %b8, %b5 |
| 39 | br i1 false, label %b7, label %b8 |
| 40 | |
| 41 | b7: ; preds = %b6 |
| 42 | unreachable |
| 43 | |
| 44 | b8: ; preds = %b6 |
| 45 | br i1 undef, label %b6, label %b9 |
| 46 | |
| 47 | b9: ; preds = %b8 |
| 48 | br i1 undef, label %b10, label %b14 |
| 49 | |
| 50 | b10: ; preds = %b9 |
| 51 | br i1 undef, label %b11, label %b13 |
| 52 | |
| 53 | b11: ; preds = %b10 |
| 54 | br i1 undef, label %b12, label %b13 |
| 55 | |
| 56 | b12: ; preds = %b11 |
| 57 | unreachable |
| 58 | |
| 59 | b13: ; preds = %b11, %b10 |
| 60 | store i32 %v9, i32* undef, align 4, !tbaa !3 |
| 61 | unreachable |
| 62 | |
| 63 | b14: ; preds = %b9 |
| 64 | unreachable |
| 65 | |
| 66 | b15: ; preds = %b3 |
| 67 | ret void |
| 68 | } |
| 69 | |
| 70 | attributes #0 = { nounwind } |
| 71 | |
| 72 | !0 = !{!1, !1, i64 0} |
| 73 | !1 = !{!"omnipotent char", !2, i64 0} |
| 74 | !2 = !{!"Simple C/C++ TBAA"} |
| 75 | !3 = !{!4, !4, i64 0} |
| 76 | !4 = !{!"int", !1, i64 0} |