1 ; RUN: llc -march=hexagon -enable-pipeliner -stats -o /dev/null < %s 2>&1 | FileCheck %s --check-prefix=STATS 2 ; REQUIRES: asserts 3 4 ; Test that we don't pipeline, incorrectly, the swap operation. 5 6 ; STATS-NOT: 1 pipeliner - Number of loops software pipelined 7 8 @g0 = common global i32* null, align 4 9 10 ; Function Attrs: nounwind 11 define void @f0(i32 %a0, i32 %a1, i32 %a2) #0 { 12 b0: 13 %v0 = icmp sgt i32 %a2, 0 14 br i1 %v0, label %b1, label %b4 15 16 b1: ; preds = %b0 17 %v1 = load i32*, i32** @g0, align 4, !tbaa !0 18 br label %b2 19 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 35 36 b3: ; preds = %b2 37 br label %b4 38 39 b4: ; preds = %b3, %b0 40 ret void 41 } 42 43 attributes #0 = { nounwind "target-cpu"="hexagonv55" } 44 45 !0 = !{!1, !1, i64 0} 46 !1 = !{!"any pointer", !2, i64 0} 47 !2 = !{!"omnipotent char", !3, i64 0} 48 !3 = !{!"Simple C/C++ TBAA"} 49 !4 = !{!5, !5, i64 0} 50 !5 = !{!"int", !2, i64 0} 51
