1 ; RUN: llc -march=hexagon -enable-pipeliner -stats -o /dev/null < %s 2>&1 -pipeliner-experimental-cg=true | FileCheck %s --check-prefix=STATS
4 ; Test that we don't pipeline, incorrectly, the swap operation.
6 ; STATS-NOT: 1 pipeliner - Number of loops software pipelined
8 @g0 = common global i32* null, align 4
10 ; Function Attrs: nounwind
11 define void @f0(i32 %a0, i32 %a1, i32 %a2) #0 {
13 %v0 = icmp sgt i32 %a2, 0
14 br i1 %v0, label %b1, label %b4
17 %v1 = load i32*, i32** @g0, align 4, !tbaa !0
20 b2: ; preds = %b2, %b1
21 %v2 = phi i32 [ %a0, %b1 ], [ %v9, %b2 ]
22 %v3 = phi i32 [ %a2, %b1 ], [ %v11, %b2 ]
23 %v4 = phi i32 [ %a1, %b1 ], [ %v10, %b2 ]
24 %v5 = getelementptr inbounds i32, i32* %v1, i32 %v2
25 %v6 = load i32, i32* %v5, align 4, !tbaa !4
26 %v7 = getelementptr inbounds i32, i32* %v1, i32 %v4
27 %v8 = load i32, i32* %v7, align 4, !tbaa !4
28 store i32 %v8, i32* %v5, align 4, !tbaa !4
29 store i32 %v6, i32* %v7, align 4, !tbaa !4
30 %v9 = add nsw i32 %v2, 1
31 %v10 = add nsw i32 %v4, 1
32 %v11 = add nsw i32 %v3, -1
33 %v12 = icmp sgt i32 %v11, 0
34 br i1 %v12, label %b2, label %b3
39 b4: ; preds = %b3, %b0
43 attributes #0 = { nounwind "target-cpu"="hexagonv55" }
46 !1 = !{!"any pointer", !2, i64 0}
47 !2 = !{!"omnipotent char", !3, i64 0}
48 !3 = !{!"Simple C/C++ TBAA"}
50 !5 = !{!"int", !2, i64 0}