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      1 ; RUN: llc -march=hexagon -O2 -enable-pipeliner=false < %s | FileCheck %s
      2 ; RUN: llc -march=hexagon -O2 -debug-only=pipeliner < %s -o - 2>&1 | FileCheck %s --check-prefix=CHECK-SWP
      3 ; REQUIRES: asserts
      4 
      5 ; CHECK: {
      6 ; CHECK-DAG: v{{[0-9]*}} = vmem(r{{[0-9]*}}++#1)
      7 ; CHECK-DAG: vmem(r{{[0-9]*}}++#1) = v{{[0-9]*}}.new
      8 ; CHECK: }{{[ \t]*}}:endloop0
      9 
     10 ; CHECK-SWP: Schedule Found? 1
     11 ; CHECK-SWP: {
     12 ; CHECK-DAG-SWP: v{{[0-9]*}}.cur = vmem(r{{[0-9]*}}++#1)
     13 ; CHECK-DAG-SWP: vmem(r{{[0-9]*}}++#1) = v{{[0-9]*}}.new
     14 ; CHECK-SWP: }{{[ \t]*}}:endloop0
     15 
     16 target triple = "hexagon"
     17 
     18 ; Function Attrs: nounwind
     19 define void @f0(i16* nocapture readonly %a0, i32 %a1, i32 %a2, i16* nocapture %a3) #0 {
     20 b0:
     21   %v0 = mul i32 %a2, -2
     22   %v1 = add i32 %v0, 64
     23   %v2 = tail call <16 x i32> @llvm.hexagon.V6.vsubw(<16 x i32> undef, <16 x i32> undef)
     24   %v3 = bitcast i16* %a3 to <16 x i32>*
     25   %v4 = sdiv i32 %a1, 32
     26   %v5 = icmp sgt i32 %a1, 31
     27   br i1 %v5, label %b1, label %b4
     28 
     29 b1:                                               ; preds = %b0
     30   %v6 = bitcast i16* %a0 to <16 x i32>*
     31   %v7 = icmp sgt i32 %a1, 63
     32   %v8 = mul i32 %v4, 32
     33   %v9 = select i1 %v7, i32 %v8, i32 32
     34   %v10 = getelementptr i16, i16* %a3, i32 %v9
     35   br label %b2
     36 
     37 b2:                                               ; preds = %b2, %b1
     38   %v11 = phi i32 [ 0, %b1 ], [ %v19, %b2 ]
     39   %v12 = phi <16 x i32> [ %v2, %b1 ], [ %v16, %b2 ]
     40   %v13 = phi <16 x i32>* [ %v3, %b1 ], [ %v18, %b2 ]
     41   %v14 = phi <16 x i32>* [ %v6, %b1 ], [ %v15, %b2 ]
     42   %v15 = getelementptr inbounds <16 x i32>, <16 x i32>* %v14, i32 1
     43   %v16 = load <16 x i32>, <16 x i32>* %v14, align 64, !tbaa !0
     44   %v17 = tail call <16 x i32> @llvm.hexagon.V6.valignb(<16 x i32> %v16, <16 x i32> %v12, i32 %v1)
     45   %v18 = getelementptr inbounds <16 x i32>, <16 x i32>* %v13, i32 1
     46   store <16 x i32> %v17, <16 x i32>* %v13, align 64, !tbaa !0
     47   %v19 = add nsw i32 %v11, 1
     48   %v20 = icmp slt i32 %v19, %v4
     49   br i1 %v20, label %b2, label %b3
     50 
     51 b3:                                               ; preds = %b2
     52   %v21 = bitcast i16* %v10 to <16 x i32>*
     53   br label %b4
     54 
     55 b4:                                               ; preds = %b3, %b0
     56   %v22 = phi <16 x i32> [ %v16, %b3 ], [ %v2, %b0 ]
     57   %v23 = phi <16 x i32>* [ %v21, %b3 ], [ %v3, %b0 ]
     58   %v24 = tail call <16 x i32> @llvm.hexagon.V6.valignb(<16 x i32> %v2, <16 x i32> %v22, i32 %v1)
     59   store <16 x i32> %v24, <16 x i32>* %v23, align 64, !tbaa !0
     60   ret void
     61 }
     62 
     63 ; Function Attrs: nounwind readnone
     64 declare <16 x i32> @llvm.hexagon.V6.vsubw(<16 x i32>, <16 x i32>) #1
     65 
     66 ; Function Attrs: nounwind readnone
     67 declare <16 x i32> @llvm.hexagon.V6.valignb(<16 x i32>, <16 x i32>, i32) #1
     68 
     69 attributes #0 = { nounwind "target-cpu"="hexagonv60" "target-features"="+hvxv60,+hvx-length64b" }
     70 attributes #1 = { nounwind readnone }
     71 
     72 !0 = !{!1, !1, i64 0}
     73 !1 = !{!"omnipotent char", !2, i64 0}
     74 !2 = !{!"Simple C/C++ TBAA"}
     75