68 lines
2.2 KiB
LLVM
68 lines
2.2 KiB
LLVM
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; RUN: llc -march=hexagon < %s -pipeliner-experimental-cg=true | FileCheck %s
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; Test that when we order instructions in a packet we check for
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; order dependences so that the source of an order dependence
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; appears before the destination.
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; CHECK: loop0(.LBB0_[[LOOP:.]],
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; CHECK: .LBB0_[[LOOP]]:
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; CHECK: = memw
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; CHECK: = memw
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; CHECK: memw({{.*}}) =
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; CHECK: = memw
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; CHECK: = memw
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; CHECK: endloop0
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@g0 = external hidden unnamed_addr constant [19 x i8], align 1
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; Function Attrs: nounwind optsize
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declare i32 @f0(i8* nocapture readonly, ...) #0
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; Function Attrs: nounwind optsize
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declare void @f1(i32*, i32*, i32* nocapture readnone) #0
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; Function Attrs: argmemonly nounwind
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declare i8* @llvm.hexagon.circ.stw(i8*, i32, i32, i32) #1
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; Function Attrs: nounwind optsize
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define void @f2(i32* %a0, i32* %a1, i32* %a2) #0 {
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b0:
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%v0 = alloca i32, align 4
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call void @f1(i32* %a2, i32* %a0, i32* %v0) #2
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%v1 = bitcast i32* %a1 to i8*
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br label %b1
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b1: ; preds = %b1, %b0
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%v2 = phi i32 [ 0, %b0 ], [ %v13, %b1 ]
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%v3 = phi i32* [ %a2, %b0 ], [ %v16, %b1 ]
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%v4 = phi i32 [ 0, %b0 ], [ %v14, %b1 ]
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%v5 = load i32, i32* %a1, align 4, !tbaa !0
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%v6 = add nsw i32 %v2, %v5
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%v7 = load i32, i32* %v3, align 4, !tbaa !0
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%v8 = tail call i8* @llvm.hexagon.circ.stw(i8* %v1, i32 %v7, i32 150995968, i32 4) #3
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%v9 = bitcast i8* %v8 to i32*
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%v10 = load i32, i32* %v3, align 4, !tbaa !0
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%v11 = add nsw i32 %v6, %v10
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%v12 = load i32, i32* %v9, align 4, !tbaa !0
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%v13 = add nsw i32 %v11, %v12
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%v14 = add nsw i32 %v4, 1
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%v15 = icmp eq i32 %v14, 2
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%v16 = getelementptr i32, i32* %v3, i32 1
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br i1 %v15, label %b2, label %b1
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b2: ; preds = %b1
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%v17 = tail call i32 (i8*, ...) @f0(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @g0, i32 0, i32 0), i32 %v13) #4
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ret void
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}
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attributes #0 = { nounwind optsize "target-cpu"="hexagonv55" }
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attributes #1 = { argmemonly nounwind }
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attributes #2 = { optsize }
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attributes #3 = { nounwind }
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attributes #4 = { nounwind optsize }
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!0 = !{!1, !1, i64 0}
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!1 = !{!"int", !2, i64 0}
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!2 = !{!"omnipotent char", !3, i64 0}
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!3 = !{!"Simple C/C++ TBAA"}
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