| ; RUN: llc -march=hexagon -fp-contract=fast -enable-pipeliner < %s |
| ; REQUIRES: asserts |
| |
| ; A Phi that depends on another Phi is loop carried. |
| |
| define void @f0() #0 { |
| b0: |
| br label %b1 |
| |
| b1: ; preds = %b1, %b0 |
| br i1 undef, label %b1, label %b2 |
| |
| b2: ; preds = %b1 |
| br i1 undef, label %b3, label %b8 |
| |
| b3: ; preds = %b2 |
| br i1 undef, label %b4, label %b5 |
| |
| b4: ; preds = %b4, %b3 |
| %v0 = phi i32 [ %v5, %b4 ], [ 2, %b3 ] |
| %v1 = phi float [ %v4, %b4 ], [ undef, %b3 ] |
| %v2 = phi float [ %v1, %b4 ], [ undef, %b3 ] |
| %v3 = fsub float 0.000000e+00, %v2 |
| %v4 = fadd float %v3, undef |
| %v5 = add nsw i32 %v0, 1 |
| %v6 = icmp eq i32 %v5, undef |
| br i1 %v6, label %b5, label %b4 |
| |
| b5: ; preds = %b4, %b3 |
| %v7 = phi float [ undef, %b3 ], [ %v1, %b4 ] |
| br i1 false, label %b6, label %b7 |
| |
| b6: ; preds = %b5 |
| br label %b7 |
| |
| b7: ; preds = %b6, %b5 |
| br label %b9 |
| |
| b8: ; preds = %b2 |
| ret void |
| |
| b9: ; preds = %b9, %b7 |
| br label %b9 |
| } |
| |
| attributes #0 = { nounwind "target-cpu"="hexagonv55" } |
