llvm/test/Transforms/LoopVectorize/RISCV/pointer-induction.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
; RUN: opt -p loop-vectorize -S %s | FileCheck %s

target triple = "riscv64-unknown-linux-gnu"

define void @ptr_induction(ptr %p, ptr noalias %q, ptr noalias %p.end) #0 {
; CHECK-LABEL: define void @ptr_induction(
; CHECK-SAME: ptr [[P:%.*]], ptr noalias [[Q:%.*]], ptr noalias [[P_END:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[P2:%.*]] = ptrtoint ptr [[P]] to i64
; CHECK-NEXT:    [[P_END1:%.*]] = ptrtoint ptr [[P_END]] to i64
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[P_END1]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[TMP0]], [[P2]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 2 x ptr> poison, ptr [[Q]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 2 x ptr> [[BROADCAST_SPLATINSERT]], <vscale x 2 x ptr> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT3:%.*]] = insertelement <vscale x 2 x ptr> poison, ptr [[P]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT4:%.*]] = shufflevector <vscale x 2 x ptr> [[BROADCAST_SPLATINSERT3]], <vscale x 2 x ptr> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = call <vscale x 2 x i64> @llvm.stepvector.nxv2i64()
; CHECK-NEXT:    [[TMP3:%.*]] = mul <vscale x 2 x i64> [[TMP2]], splat (i64 1)
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <vscale x 2 x i64> zeroinitializer, [[TMP3]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 2 x i64> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[POINTER_PHI:%.*]] = phi ptr [ [[P]], %[[VECTOR_PH]] ], [ [[PTR_IND7:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[AVL:%.*]] = phi i64 [ [[TMP1]], %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VECTOR_GEP:%.*]] = getelementptr i8, ptr [[POINTER_PHI]], <vscale x 2 x i64> [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 2, i1 true)
; CHECK-NEXT:    [[TMP5:%.*]] = zext i32 [[TMP4]] to i64
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT5:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[TMP5]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT6:%.*]] = shufflevector <vscale x 2 x i64> [[BROADCAST_SPLATINSERT5]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP6:%.*]] = ptrtoint <vscale x 2 x ptr> [[VECTOR_GEP]] to <vscale x 2 x i64>
; CHECK-NEXT:    call void @llvm.vp.scatter.nxv2i64.nxv2p0(<vscale x 2 x i64> [[TMP6]], <vscale x 2 x ptr> align 8 [[BROADCAST_SPLAT]], <vscale x 2 x i1> splat (i1 true), i32 [[TMP4]])
; CHECK-NEXT:    call void @llvm.vp.scatter.nxv2i64.nxv2p0(<vscale x 2 x i64> [[VEC_IND]], <vscale x 2 x ptr> align 8 [[BROADCAST_SPLAT4]], <vscale x 2 x i1> splat (i1 true), i32 [[TMP4]])
; CHECK-NEXT:    [[AVL_NEXT]] = sub nuw i64 [[AVL]], [[TMP5]]
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT6]]
; CHECK-NEXT:    [[PTR_IND7]] = getelementptr i8, ptr [[POINTER_PHI]], i64 [[TMP5]]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i64 [[AVL_NEXT]], 0
; CHECK-NEXT:    br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %ptr.ind = phi ptr [ %p, %entry ], [ %ptr.ind.next, %loop ]
  %ptri64 = ptrtoint ptr %ptr.ind to i64
  store i64 %ptri64, ptr %q
  store i64 %iv, ptr %p
  %iv.next = add i64 %iv, 1
  %ptr.ind.next = getelementptr i8, ptr %ptr.ind, i64 1
  %ec = icmp eq ptr %ptr.ind, %p.end
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

attributes #0 = { "target-features"="+v" }