| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon -fp-contract=fast -enable-pipeliner < %s |
| 2 | ; REQUIRES: asserts |
| 3 | |
| 4 | ; A Phi that depends on another Phi is loop carried. |
| 5 | |
| 6 | define void @f0() #0 { |
| 7 | b0: |
| 8 | br label %b1 |
| 9 | |
| 10 | b1: ; preds = %b1, %b0 |
| 11 | br i1 undef, label %b1, label %b2 |
| 12 | |
| 13 | b2: ; preds = %b1 |
| 14 | br i1 undef, label %b3, label %b8 |
| 15 | |
| 16 | b3: ; preds = %b2 |
| 17 | br i1 undef, label %b4, label %b5 |
| 18 | |
| 19 | b4: ; preds = %b4, %b3 |
| 20 | %v0 = phi i32 [ %v5, %b4 ], [ 2, %b3 ] |
| 21 | %v1 = phi float [ %v4, %b4 ], [ undef, %b3 ] |
| 22 | %v2 = phi float [ %v1, %b4 ], [ undef, %b3 ] |
| 23 | %v3 = fsub float 0.000000e+00, %v2 |
| 24 | %v4 = fadd float %v3, undef |
| 25 | %v5 = add nsw i32 %v0, 1 |
| 26 | %v6 = icmp eq i32 %v5, undef |
| 27 | br i1 %v6, label %b5, label %b4 |
| 28 | |
| 29 | b5: ; preds = %b4, %b3 |
| 30 | %v7 = phi float [ undef, %b3 ], [ %v1, %b4 ] |
| 31 | br i1 false, label %b6, label %b7 |
| 32 | |
| 33 | b6: ; preds = %b5 |
| 34 | br label %b7 |
| 35 | |
| 36 | b7: ; preds = %b6, %b5 |
| 37 | br label %b9 |
| 38 | |
| 39 | b8: ; preds = %b2 |
| 40 | ret void |
| 41 | |
| 42 | b9: ; preds = %b9, %b7 |
| 43 | br label %b9 |
| 44 | } |
| 45 | |
| 46 | attributes #0 = { nounwind "target-cpu"="hexagonv55" } |