1 ; RUN: llc -march=hexagon -mno-pairing -mno-compound < %s
4 ; Test that the SWP doesn't assert when generating new phis. In this example, a
5 ; phi references another phi and phi as well as the phi loop value are all
6 ; defined in different stages.
8 ; v2 = phi(vb, v3) stage 1
9 ; v1 = phi(va, v2) stage 0
11 ; Function Attrs: nounwind
12 define void @f0() #0 {
16 b1: ; preds = %b1, %b0
17 br i1 undef, label %b2, label %b1
22 b3: ; preds = %b3, %b2
23 br i1 undef, label %b3, label %b4
25 b4: ; preds = %b4, %b3
26 %v0 = phi i32 [ %v17, %b4 ], [ undef, %b3 ]
27 %v1 = phi i64 [ %v13, %b4 ], [ undef, %b3 ]
28 %v2 = phi i32 [ %v19, %b4 ], [ undef, %b3 ]
29 %v3 = phi i32 [ %v4, %b4 ], [ undef, %b3 ]
30 %v4 = phi i32 [ %v14, %b4 ], [ undef, %b3 ]
31 %v5 = phi i32 [ %v18, %b4 ], [ undef, %b3 ]
32 %v6 = tail call i64 @llvm.hexagon.A2.combinew(i32 %v3, i32 %v3)
33 %v7 = tail call i64 @llvm.hexagon.A2.combinew(i32 %v0, i32 undef)
34 %v8 = tail call i64 @llvm.hexagon.S2.valignib(i64 %v7, i64 undef, i32 2)
35 %v9 = inttoptr i32 %v5 to ptr
36 %v10 = load i16, ptr %v9, align 2, !tbaa !0
37 %v11 = sext i16 %v10 to i32
38 %v12 = add nsw i32 %v5, -8
39 %v13 = tail call i64 @llvm.hexagon.M2.vdmacs.s0(i64 %v1, i64 %v6, i64 %v8)
40 %v14 = tail call i32 @llvm.hexagon.A2.combine.ll(i32 %v11, i32 %v0)
41 %v15 = inttoptr i32 %v12 to ptr
42 %v16 = load i16, ptr %v15, align 2, !tbaa !0
43 %v17 = sext i16 %v16 to i32
44 %v18 = add nsw i32 %v5, -16
45 %v19 = add nsw i32 %v2, 1
46 %v20 = icmp eq i32 %v19, 0
47 br i1 %v20, label %b5, label %b4
50 %v21 = phi i64 [ %v13, %b4 ]
54 ; Function Attrs: nounwind readnone
55 declare i32 @llvm.hexagon.A2.combine.ll(i32, i32) #1
57 ; Function Attrs: nounwind readnone
58 declare i64 @llvm.hexagon.A2.combinew(i32, i32) #1
60 ; Function Attrs: nounwind readnone
61 declare i64 @llvm.hexagon.M2.vdmacs.s0(i64, i64, i64) #1
63 ; Function Attrs: nounwind readnone
64 declare i64 @llvm.hexagon.S2.valignib(i64, i64, i32) #1
66 attributes #0 = { nounwind "target-cpu"="hexagonv60" }
67 attributes #1 = { nounwind readnone }
70 !1 = !{!"short", !2, i64 0}
71 !2 = !{!"omnipotent char", !3, i64 0}
72 !3 = !{!"Simple C/C++ TBAA"}