# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve %s -run-pass=arm-low-overhead-loops -o - --verify-machineinstrs | FileCheck %s

--- |
  define dso_local arm_aapcs_vfpcc zeroext i8 @non_masked_load(i8* nocapture readonly %a, i8* nocapture readonly %b, i32 %N) {
  entry:
    %cmp11 = icmp eq i32 %N, 0
    %0 = add i32 %N, 15
    %1 = lshr i32 %0, 4
    %2 = shl nuw i32 %1, 4
    %3 = add i32 %2, -16
    %4 = lshr i32 %3, 4
    %5 = add nuw nsw i32 %4, 1
    br i1 %cmp11, label %for.cond.cleanup, label %vector.ph

  vector.ph:                                        ; preds = %entry
    %start = call i32 @llvm.start.loop.iterations.i32(i32 %5)
    %6 = shl i32 %4, 3
    %7 = sub i32 %N, %6
    br label %vector.body

  vector.body:                                      ; preds = %vector.body, %vector.ph
    %lsr.iv20 = phi i8* [ %scevgep21, %vector.body ], [ %b, %vector.ph ]
    %lsr.iv = phi i8* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
    %vec.phi = phi <16 x i8> [ zeroinitializer, %vector.ph ], [ %13, %vector.body ]
    %8 = phi i32 [ %start, %vector.ph ], [ %14, %vector.body ]
    %9 = phi i32 [ %N, %vector.ph ], [ %11, %vector.body ]
    %lsr.iv2022 = bitcast i8* %lsr.iv20 to <16 x i8>*
    %lsr.iv19 = bitcast i8* %lsr.iv to <16 x i8>*
    %10 = call <16 x i1> @llvm.arm.mve.vctp8(i32 %9)
    %11 = sub i32 %9, 16
    %wide.masked.load = call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %lsr.iv19, i32 1, <16 x i1> %10, <16 x i8> undef)
    %wide.load16 = load <16 x i8>, <16 x i8>* %lsr.iv2022
    %12 = add <16 x i8> %wide.masked.load, %vec.phi
    %13 = add <16 x i8> %12, %wide.load16
    %scevgep = getelementptr i8, i8* %lsr.iv, i32 16
    %scevgep21 = getelementptr i8, i8* %lsr.iv20, i32 16
    %14 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %8, i32 1)
    %15 = icmp ne i32 %14, 0
    br i1 %15, label %vector.body, label %middle.block

  middle.block:                                     ; preds = %vector.body
    %vec.phi.lcssa = phi <16 x i8> [ %vec.phi, %vector.body ]
    %.lcssa = phi <16 x i8> [ %13, %vector.body ]
    %16 = call <16 x i1> @llvm.arm.mve.vctp8(i32 %7)
    %17 = select <16 x i1> %16, <16 x i8> %.lcssa, <16 x i8> %vec.phi.lcssa
    %18 = call i8 @llvm.vector.reduce.add.v16i8(<16 x i8> %17)
    br label %for.cond.cleanup

  for.cond.cleanup:                                 ; preds = %middle.block, %entry
    %res.0.lcssa = phi i8 [ 0, %entry ], [ %18, %middle.block ]
    ret i8 %res.0.lcssa
  }

  declare <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>*, i32 immarg, <16 x i1>, <16 x i8>) #1
  declare i8 @llvm.vector.reduce.add.v16i8(<16 x i8>) #2
  declare i32 @llvm.start.loop.iterations.i32(i32) #3
  declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
  declare <16 x i1> @llvm.arm.mve.vctp8(i32) #4

...
---
name:            non_masked_load
alignment:       2
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
registers:       []
liveins:
  - { reg: '$r0', virtual-reg: '' }
  - { reg: '$r1', virtual-reg: '' }
  - { reg: '$r2', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       8
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:
  - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:       []
constants:       []
machineFunctionInfo: {}
body:             |
  ; CHECK-LABEL: name: non_masked_load
  ; CHECK: bb.0.entry:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   liveins: $lr, $r0, $r1, $r2, $r7
  ; CHECK:   tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   t2IT 0, 2, implicit-def $itstate
  ; CHECK:   renamable $r0 = tMOVi8 $noreg, 0, 0 /* CC::eq */, $cpsr, implicit killed $r0, implicit $itstate
  ; CHECK:   renamable $r0 = tUXTB killed renamable $r0, 0 /* CC::eq */, $cpsr, implicit killed $r0, implicit $itstate
  ; CHECK:   tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $r0, implicit killed $itstate
  ; CHECK: bb.1.vector.ph:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   liveins: $lr, $r0, $r1, $r2
  ; CHECK:   frame-setup tPUSH 14 /* CC::al */, $noreg, killed $lr, implicit-def $sp, implicit $sp
  ; CHECK:   frame-setup CFI_INSTRUCTION def_cfa_offset 8
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $lr, -4
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $r7, -8
  ; CHECK:   dead $r7 = frame-setup tMOVr $sp, 14 /* CC::al */, $noreg
  ; CHECK:   frame-setup CFI_INSTRUCTION def_cfa_register $r7
  ; CHECK:   renamable $r3 = t2ADDri renamable $r2, 15, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
  ; CHECK:   renamable $r3 = t2BICri killed renamable $r3, 15, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r12 = t2SUBri killed renamable $r3, 16, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $lr = nuw nsw t2ADDrs killed renamable $r3, renamable $r12, 35, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r3 = t2LSRri killed renamable $r12, 4, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r3 = t2SUBrs renamable $r2, killed renamable $r3, 34, 14 /* CC::al */, $noreg, $noreg
  ; CHECK: bb.2.vector.body:
  ; CHECK:   successors: %bb.2(0x7c000000), %bb.3(0x04000000)
  ; CHECK:   liveins: $lr, $q0, $r0, $r1, $r2, $r3
  ; CHECK:   renamable $vpr = MVE_VCTP8 renamable $r2, 0, $noreg
  ; CHECK:   $q1 = MVE_VORR killed $q0, killed $q0, 0, $noreg, undef $q1
  ; CHECK:   MVE_VPST 2, implicit $vpr
  ; CHECK:   renamable $r1, renamable $q0 = MVE_VLDRBU8_post killed renamable $r1, 16, 1, killed renamable $vpr :: (load 16 from %ir.lsr.iv2022, align 1)
  ; CHECK:   renamable $r0, renamable $q2 = MVE_VLDRBU8_post killed renamable $r0, 16, 1, $noreg :: (load 16 from %ir.lsr.iv19, align 1)
  ; CHECK:   renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 16, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $q2 = MVE_VADDi8 killed renamable $q2, renamable $q1, 0, $noreg, undef renamable $q2
  ; CHECK:   renamable $q0 = MVE_VADDi8 killed renamable $q2, killed renamable $q0, 0, $noreg, undef renamable $q0
  ; CHECK:   $lr = t2LEUpdate killed renamable $lr, %bb.2
  ; CHECK: bb.3.middle.block:
  ; CHECK:   liveins: $q0, $q1, $r3
  ; CHECK:   renamable $vpr = MVE_VCTP8 killed renamable $r3, 0, $noreg
  ; CHECK:   renamable $q0 = MVE_VPSEL killed renamable $q0, killed renamable $q1, 0, killed renamable $vpr
  ; CHECK:   renamable $r0 = MVE_VADDVu8no_acc killed renamable $q0, 0, $noreg
  ; CHECK:   $sp = t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
  ; CHECK:   renamable $r0 = tUXTB killed renamable $r0, 14 /* CC::al */, $noreg
  ; CHECK:   tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0
  bb.0.entry:
    successors: %bb.1(0x80000000)
    liveins: $r0, $r1, $r2, $lr

    tCMPi8 renamable $r2, 0, 14, $noreg, implicit-def $cpsr
    t2IT 0, 2, implicit-def $itstate
    renamable $r0 = tMOVi8 $noreg, 0, 0, $cpsr, implicit killed $r0, implicit $itstate
    renamable $r0 = tUXTB killed renamable $r0, 0, $cpsr, implicit killed $r0, implicit $itstate
    tBX_RET 0, killed $cpsr, implicit $r0, implicit killed $itstate

  bb.1.vector.ph:
    successors: %bb.2(0x80000000)
    liveins: $r0, $r1, $r2, $lr

    frame-setup tPUSH 14, $noreg, killed $lr, implicit-def $sp, implicit $sp
    frame-setup CFI_INSTRUCTION def_cfa_offset 8
    frame-setup CFI_INSTRUCTION offset $lr, -4
    frame-setup CFI_INSTRUCTION offset $r7, -8
    $r7 = frame-setup tMOVr $sp, 14, $noreg
    frame-setup CFI_INSTRUCTION def_cfa_register $r7
    renamable $r3 = t2ADDri renamable $r2, 15, 14, $noreg, $noreg
    renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
    renamable $r3 = t2BICri killed renamable $r3, 15, 14, $noreg, $noreg
    renamable $r12 = t2SUBri killed renamable $r3, 16, 14, $noreg, $noreg
    renamable $r3, dead $cpsr = tMOVi8 1, 14, $noreg
    renamable $lr = nuw nsw t2ADDrs killed renamable $r3, renamable $r12, 35, 14, $noreg, $noreg
    renamable $r3 = t2LSRri killed renamable $r12, 4, 14, $noreg, $noreg
    renamable $r3 = t2SUBrs renamable $r2, killed renamable $r3, 34, 14, $noreg, $noreg
    $lr = t2DoLoopStart renamable $lr

  bb.2.vector.body:
    successors: %bb.2(0x7c000000), %bb.3(0x04000000)
    liveins: $lr, $q0, $r0, $r1, $r2, $r3

    renamable $vpr = MVE_VCTP8 renamable $r2, 0, $noreg
    $q1 = MVE_VORR killed $q0, $q0, 0, $noreg, undef $q1
    MVE_VPST 2, implicit $vpr
    renamable $r1, renamable $q0 = MVE_VLDRBU8_post killed renamable $r1, 16, 1, renamable $vpr :: (load 16 from %ir.lsr.iv2022, align 1)
    renamable $r0, renamable $q2 = MVE_VLDRBU8_post killed renamable $r0, 16, 1, $noreg :: (load 16 from %ir.lsr.iv19, align 1)
    renamable $r2, dead $cpsr = tSUBi8 killed renamable $r2, 16, 14, $noreg
    renamable $q2 = MVE_VADDi8 killed renamable $q2, renamable $q1, 0, $noreg, undef renamable $q2
    renamable $lr = t2LoopDec killed renamable $lr, 1
    renamable $q0 = MVE_VADDi8 killed renamable $q2, killed renamable $q0, 0, $noreg, undef renamable $q0
    t2LoopEnd renamable $lr, %bb.2, implicit-def dead $cpsr
    tB %bb.3, 14, $noreg

  bb.3.middle.block:
    liveins: $q0, $q1, $r3

    renamable $vpr = MVE_VCTP8 killed renamable $r3, 0, $noreg
    renamable $q0 = MVE_VPSEL killed renamable $q0, killed renamable $q1, 0, killed renamable $vpr
    renamable $r0 = MVE_VADDVu8no_acc killed renamable $q0, 0, $noreg
    $sp = t2LDMIA_UPD $sp, 14, $noreg, def $r7, def $lr
    renamable $r0 = tUXTB killed renamable $r0, 14, $noreg
    tBX_RET 14, $noreg, implicit killed $r0

...