1 ; RUN: llc -march=hexagon < %s -pipeliner-experimental-cg=true | FileCheck %s
3 ; Test that when we order instructions in a packet we check for
4 ; order dependences so that the source of an order dependence
5 ; appears before the destination.
7 ; CHECK: loop0(.LBB0_[[LOOP:.]],
8 ; CHECK: .LBB0_[[LOOP]]:
11 ; CHECK: memw({{.*}}) =
16 @g0 = external hidden unnamed_addr constant [19 x i8], align 1
18 ; Function Attrs: nounwind optsize
19 declare i32 @f0(ptr nocapture readonly, ...) #0
21 ; Function Attrs: nounwind optsize
22 declare void @f1(ptr, ptr, ptr nocapture readnone) #0
24 ; Function Attrs: argmemonly nounwind
25 declare ptr @llvm.hexagon.circ.stw(ptr, i32, i32, i32) #1
27 ; Function Attrs: nounwind optsize
28 define void @f2(ptr %a0, ptr %a1, ptr %a2) #0 {
30 %v0 = alloca i32, align 4
31 call void @f1(ptr %a2, ptr %a0, ptr %v0) #2
34 b1: ; preds = %b1, %b0
35 %v2 = phi i32 [ 0, %b0 ], [ %v13, %b1 ]
36 %v3 = phi ptr [ %a2, %b0 ], [ %v16, %b1 ]
37 %v4 = phi i32 [ 0, %b0 ], [ %v14, %b1 ]
38 %v5 = load i32, ptr %a1, align 4, !tbaa !0
39 %v6 = add nsw i32 %v2, %v5
40 %v7 = load i32, ptr %v3, align 4, !tbaa !0
41 %v8 = tail call ptr @llvm.hexagon.circ.stw(ptr %a1, i32 %v7, i32 150995968, i32 4) #3
42 %v10 = load i32, ptr %v3, align 4, !tbaa !0
43 %v11 = add nsw i32 %v6, %v10
44 %v12 = load i32, ptr %v8, align 4, !tbaa !0
45 %v13 = add nsw i32 %v11, %v12
46 %v14 = add nsw i32 %v4, 1
47 %v15 = icmp eq i32 %v14, 2
48 %v16 = getelementptr i32, ptr %v3, i32 1
49 br i1 %v15, label %b2, label %b1
52 %v17 = tail call i32 (ptr, ...) @f0(ptr @g0, i32 %v13) #4
56 attributes #0 = { nounwind optsize "target-cpu"="hexagonv55" }
57 attributes #1 = { argmemonly nounwind }
58 attributes #2 = { optsize }
59 attributes #3 = { nounwind }
60 attributes #4 = { nounwind optsize }
63 !1 = !{!"int", !2, i64 0}
64 !2 = !{!"omnipotent char", !3, i64 0}
65 !3 = !{!"Simple C/C++ TBAA"}