72 lines
3.3 KiB
LLVM
72 lines
3.3 KiB
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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; One of the loads is only used in a PHI instruction. Make sure the PHI use
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; still counts as a user of the load (and that the load is not removed).
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; CHECK-LABEL: f0:
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; CHECK: = vmem({{.*}})
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; CHECK: = vmem({{.*}})
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target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
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target triple = "hexagon"
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declare <16 x i32> @llvm.hexagon.V6.vmux(<64 x i1>, <16 x i32>, <16 x i32>) #0
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declare <16 x i32> @llvm.hexagon.V6.vmpyiewuh.acc(<16 x i32>, <16 x i32>, <16 x i32>) #0
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declare <16 x i32> @llvm.hexagon.V6.vand(<16 x i32>, <16 x i32>) #0
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declare <64 x i1> @llvm.hexagon.V6.vgtuw.and(<64 x i1>, <16 x i32>, <16 x i32>) #0
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declare <64 x i1> @llvm.hexagon.V6.pred.or(<64 x i1>, <64 x i1>) #0
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define <16 x i32> @f0(i8* %a0, i32 %a1) local_unnamed_addr #1 {
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b0:
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%v0 = getelementptr inbounds i8, i8* %a0, i32 576
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%v1 = bitcast i8* %a0 to <16 x i32>*
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%v2 = bitcast i8* %v0 to <16 x i32>*
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br label %b1
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b1: ; preds = %b4, %b0
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%v3 = phi i32 [ 0, %b0 ], [ %v23, %b4 ]
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%v4 = phi <16 x i32> [ poison, %b0 ], [ %v22, %b4 ]
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br i1 poison, label %b2, label %b3
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b2: ; preds = %b1
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%v5 = getelementptr inbounds <16 x i32>, <16 x i32>* %v1, i32 %v3
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%v6 = load <16 x i32>, <16 x i32>* %v5, align 64
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%v7 = getelementptr inbounds <16 x i32>, <16 x i32>* %v2, i32 %v3
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%v8 = load <16 x i32>, <16 x i32>* %v7, align 64
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%v9 = tail call <16 x i32> @llvm.hexagon.V6.vmpyiewuh.acc(<16 x i32> poison, <16 x i32> %v6, <16 x i32> %v6)
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br label %b4
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b3: ; preds = %b1
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br label %b4
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b4: ; preds = %b3, %b2
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%v10 = phi <16 x i32> [ %v9, %b2 ], [ poison, %b3 ]
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%v11 = phi <16 x i32> [ %v8, %b2 ], [ poison, %b3 ]
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%v12 = tail call <16 x i32> @llvm.hexagon.V6.vmux(<64 x i1> poison, <16 x i32> %v10, <16 x i32> %v4)
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%v13 = tail call <16 x i32> @llvm.hexagon.V6.vmux(<64 x i1> poison, <16 x i32> %v11, <16 x i32> poison)
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%v14 = or i32 %v3, 1
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%v15 = getelementptr inbounds <16 x i32>, <16 x i32>* %v2, i32 %v14
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%v16 = load <16 x i32>, <16 x i32>* %v15, align 64
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%v17 = tail call <16 x i32> @llvm.hexagon.V6.vmpyiewuh.acc(<16 x i32> poison, <16 x i32> %v13, <16 x i32> poison)
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%v18 = tail call <16 x i32> @llvm.hexagon.V6.vand(<16 x i32> %v12, <16 x i32> poison)
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%v19 = tail call <64 x i1> @llvm.hexagon.V6.vgtuw.and(<64 x i1> poison, <16 x i32> %v17, <16 x i32> poison)
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%v20 = tail call <64 x i1> @llvm.hexagon.V6.pred.or(<64 x i1> %v19, <64 x i1> poison)
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%v21 = tail call <64 x i1> @llvm.hexagon.V6.pred.or(<64 x i1> %v20, <64 x i1> poison)
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%v22 = tail call <16 x i32> @llvm.hexagon.V6.vmux(<64 x i1> %v21, <16 x i32> poison, <16 x i32> %v12)
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%v23 = add nuw nsw i32 %v3, 2
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%v24 = icmp slt i32 %v23, %a1
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br i1 %v24, label %b1, label %b5, !llvm.loop !1
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b5: ; preds = %b4
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ret <16 x i32> %v22
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}
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attributes #0 = { nocallback nofree nosync nounwind willreturn memory(none) }
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attributes #1 = { "target-features"="+hvx-length64b,+hvxv65,+v65,-long-calls" }
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!llvm.linker.options = !{!0}
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!0 = !{!"$.str.3", !".rodata.str1.1"}
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!1 = distinct !{!1, !2}
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!2 = !{!"llvm.loop.mustprogress"}
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