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 79 attributes #0 = { norecurse "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" } 80
