| ; RUN: llc -march=hexagon < %s |
| ; REQUIRES: asserts |
| |
| ; This code causes multiple endloop instructions to be generated for the |
| ; same loop. The findLoopInstr would encounter for one endloop would encounter |
| ; the other endloop, and return null in response. This resulted in a crash. |
| ; |
| ; Check that with the fix we are able to compile this code successfully. |
| |
| target triple = "hexagon" |
| |
| ; Function Attrs: norecurse |
| define void @fred() local_unnamed_addr #0 align 2 { |
| b0: |
| br label %b7 |
| |
| b1: ; preds = %b9 |
| br i1 undef, label %b4, label %b2 |
| |
| b2: ; preds = %b1 |
| %v3 = sub i32 undef, undef |
| br label %b4 |
| |
| b4: ; preds = %b2, %b1 |
| %v5 = phi i32 [ undef, %b1 ], [ %v3, %b2 ] |
| br i1 undef, label %b14, label %b6 |
| |
| b6: ; preds = %b4 |
| br label %b10 |
| |
| b7: ; preds = %b0 |
| br i1 undef, label %b9, label %b8 |
| |
| b8: ; preds = %b7 |
| unreachable |
| |
| b9: ; preds = %b7 |
| br label %b1 |
| |
| b10: ; preds = %b21, %b6 |
| %v11 = phi i32 [ %v22, %b21 ], [ %v5, %b6 ] |
| br i1 undef, label %b21, label %b12 |
| |
| b12: ; preds = %b10 |
| br label %b15 |
| |
| b13: ; preds = %b21 |
| br label %b14 |
| |
| b14: ; preds = %b13, %b4 |
| ret void |
| |
| b15: ; preds = %b12 |
| br i1 undef, label %b16, label %b17 |
| |
| b16: ; preds = %b15 |
| store i32 0, i32* undef, align 4 |
| br label %b21 |
| |
| b17: ; preds = %b15 |
| br label %b18 |
| |
| b18: ; preds = %b17 |
| br i1 undef, label %b19, label %b20 |
| |
| b19: ; preds = %b18 |
| br label %b21 |
| |
| b20: ; preds = %b18 |
| store i32 0, i32* undef, align 4 |
| br label %b21 |
| |
| b21: ; preds = %b20, %b19, %b16, %b10 |
| %v22 = add i32 %v11, -8 |
| %v23 = icmp eq i32 %v22, 0 |
| br i1 %v23, label %b13, label %b10 |
| } |
| |
| attributes #0 = { norecurse "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" } |
