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

--- |
  define dso_local arm_aapcs_vfpcc void @remove_mov_lr_chain(float* nocapture readonly %pSrc, float* nocapture %pDst, i32 %blockSize) #0 {
  entry:
    %cmp5 = icmp eq i32 %blockSize, 0
    br i1 %cmp5, label %while.end, label %while.body.preheader

  while.body.preheader:                             ; preds = %entry
    %min.iters.check = icmp ult i32 %blockSize, 4
    br i1 %min.iters.check, label %while.body.preheader19, label %vector.memcheck

  vector.memcheck:                                  ; preds = %while.body.preheader
    %scevgep = getelementptr float, float* %pDst, i32 %blockSize
    %scevgep12 = getelementptr float, float* %pSrc, i32 %blockSize
    %bound0 = icmp ugt float* %scevgep12, %pDst
    %bound1 = icmp ugt float* %scevgep, %pSrc
    %found.conflict = and i1 %bound0, %bound1
    %0 = lshr i32 %blockSize, 2
    %1 = shl nuw i32 %0, 2
    %2 = add i32 %1, -4
    %3 = lshr i32 %2, 2
    %4 = add nuw nsw i32 %3, 1
    br i1 %found.conflict, label %while.body.preheader19, label %vector.ph

  vector.ph:                                        ; preds = %vector.memcheck
    %n.vec = and i32 %blockSize, -4
    %ind.end = sub i32 %blockSize, %n.vec
    %ind.end15 = getelementptr float, float* %pSrc, i32 %n.vec
    %ind.end17 = getelementptr float, float* %pDst, i32 %n.vec
    %scevgep9 = getelementptr float, float* %pDst, i32 -4
    %scevgep14 = getelementptr float, float* %pSrc, i32 -4
    %start1 = call i32 @llvm.start.loop.iterations.i32(i32 %4)
    br label %vector.body

  vector.body:                                      ; preds = %vector.body, %vector.ph
    %lsr.iv15 = phi float* [ %scevgep16, %vector.body ], [ %scevgep14, %vector.ph ]
    %lsr.iv10 = phi float* [ %scevgep11, %vector.body ], [ %scevgep9, %vector.ph ]
    %5 = phi i32 [ %start1, %vector.ph ], [ %7, %vector.body ]
    %lsr.iv1517 = bitcast float* %lsr.iv15 to <4 x float>*
    %lsr.iv1012 = bitcast float* %lsr.iv10 to <4 x float>*
    %scevgep18 = getelementptr <4 x float>, <4 x float>* %lsr.iv1517, i32 1
    %wide.load = load <4 x float>, <4 x float>* %scevgep18, align 4
    %6 = call fast <4 x float> @llvm.fabs.v4f32(<4 x float> %wide.load)
    %scevgep13 = getelementptr <4 x float>, <4 x float>* %lsr.iv1012, i32 1
    store <4 x float> %6, <4 x float>* %scevgep13, align 4
    %scevgep11 = getelementptr float, float* %lsr.iv10, i32 4
    %scevgep16 = getelementptr float, float* %lsr.iv15, i32 4
    %7 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %5, i32 1)
    %8 = icmp ne i32 %7, 0
    br i1 %8, label %vector.body, label %middle.block

  middle.block:                                     ; preds = %vector.body
    %cmp.n = icmp eq i32 %n.vec, %blockSize
    br i1 %cmp.n, label %while.end, label %while.body.preheader19

  while.body.preheader19:                           ; preds = %middle.block, %vector.memcheck, %while.body.preheader
    %blkCnt.08.ph = phi i32 [ %blockSize, %vector.memcheck ], [ %blockSize, %while.body.preheader ], [ %ind.end, %middle.block ]
    %pSrc.addr.07.ph = phi float* [ %pSrc, %vector.memcheck ], [ %pSrc, %while.body.preheader ], [ %ind.end15, %middle.block ]
    %pDst.addr.06.ph = phi float* [ %pDst, %vector.memcheck ], [ %pDst, %while.body.preheader ], [ %ind.end17, %middle.block ]
    %scevgep1 = getelementptr float, float* %pSrc.addr.07.ph, i32 -1
    %scevgep4 = getelementptr float, float* %pDst.addr.06.ph, i32 -1
    %start2 = call i32 @llvm.start.loop.iterations.i32(i32 %blkCnt.08.ph)
    br label %while.body

  while.body:                                       ; preds = %while.body, %while.body.preheader19
    %lsr.iv5 = phi float* [ %scevgep6, %while.body ], [ %scevgep4, %while.body.preheader19 ]
    %lsr.iv = phi float* [ %scevgep2, %while.body ], [ %scevgep1, %while.body.preheader19 ]
    %9 = phi i32 [ %start2, %while.body.preheader19 ], [ %12, %while.body ]
    %scevgep3 = getelementptr float, float* %lsr.iv, i32 1
    %scevgep7 = getelementptr float, float* %lsr.iv5, i32 1
    %10 = load float, float* %scevgep3, align 4
    %11 = tail call fast float @llvm.fabs.f32(float %10)
    store float %11, float* %scevgep7, align 4
    %scevgep2 = getelementptr float, float* %lsr.iv, i32 1
    %scevgep6 = getelementptr float, float* %lsr.iv5, i32 1
    %12 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %9, i32 1)
    %13 = icmp ne i32 %12, 0
    br i1 %13, label %while.body, label %while.end

  while.end:                                        ; preds = %while.body, %middle.block, %entry
    ret void
  }
  declare float @llvm.fabs.f32(float)
  declare <4 x float> @llvm.fabs.v4f32(<4 x float>)
  declare i32 @llvm.start.loop.iterations.i32(i32)
  declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)

...
---
name:            remove_mov_lr_chain
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: '$r2', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       16
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:
  - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
      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: '$r7', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:       []
constants:       []
machineFunctionInfo: {}
body:             |
  ; CHECK-LABEL: name: remove_mov_lr_chain
  ; CHECK: bb.0.entry:
  ; CHECK:   successors: %bb.9(0x30000000), %bb.1(0x50000000)
  ; CHECK:   liveins: $lr, $r0, $r1, $r2, $r4, $r5, $r7
  ; CHECK:   frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
  ; CHECK:   frame-setup CFI_INSTRUCTION def_cfa_offset 16
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $lr, -4
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $r7, -8
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $r5, -12
  ; CHECK:   frame-setup CFI_INSTRUCTION offset $r4, -16
  ; CHECK:   tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   tBcc %bb.9, 0 /* CC::eq */, killed $cpsr
  ; CHECK: bb.1.while.body.preheader:
  ; CHECK:   successors: %bb.6(0x40000000), %bb.2(0x40000000)
  ; CHECK:   liveins: $r0, $r1, $r2
  ; CHECK:   tCMPi8 renamable $r2, 4, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   tBcc %bb.6, 3 /* CC::lo */, killed $cpsr
  ; CHECK: bb.2.vector.memcheck:
  ; CHECK:   successors: %bb.3(0x40000000), %bb.6(0x40000000)
  ; CHECK:   liveins: $r0, $r1, $r2
  ; CHECK:   renamable $r3 = t2ADDrs renamable $r0, renamable $r2, 18, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   tCMPr killed renamable $r3, renamable $r1, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   t2IT 8, 4, implicit-def $itstate
  ; CHECK:   renamable $r3 = t2ADDrs renamable $r1, renamable $r2, 18, 8 /* CC::hi */, $cpsr, $noreg, implicit $itstate
  ; CHECK:   tCMPr killed renamable $r3, renamable $r0, 8 /* CC::hi */, killed $cpsr, implicit-def $cpsr, implicit killed $itstate
  ; CHECK:   tBcc %bb.6, 8 /* CC::hi */, killed $cpsr
  ; CHECK: bb.3.vector.ph:
  ; CHECK:   successors: %bb.4(0x80000000)
  ; CHECK:   liveins: $r0, $r1, $r2
  ; CHECK:   renamable $r4 = t2BICri renamable $r2, 3, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $r12 = t2SUBri renamable $r4, 4, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r7, dead $cpsr = tSUBrr renamable $r2, renamable $r4, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r12 = t2ADDrs renamable $r0, renamable $r4, 18, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r0, dead $cpsr = tSUBi8 killed renamable $r0, 16, 14 /* CC::al */, $noreg
  ; CHECK:   $r5 = tMOVr killed $r3, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $r3 = t2ADDrs renamable $r1, renamable $r4, 18, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   renamable $r1, dead $cpsr = tSUBi8 killed renamable $r1, 16, 14 /* CC::al */, $noreg
  ; CHECK: bb.4.vector.body:
  ; CHECK:   successors: %bb.4(0x7c000000), %bb.5(0x04000000)
  ; CHECK:   liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $r12
  ; CHECK:   renamable $r0, renamable $q0 = MVE_VLDRWU32_pre killed renamable $r0, 16, 0, $noreg :: (load 16 from %ir.scevgep18, align 4)
  ; CHECK:   $lr = tMOVr killed $r5, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $q0 = nnan ninf nsz arcp contract afn reassoc MVE_VABSf32 killed renamable $q0, 0, $noreg, undef renamable $q0
  ; CHECK:   renamable $r1 = MVE_VSTRBU8_pre killed renamable $q0, killed renamable $r1, 16, 0, $noreg :: (store 16 into %ir.scevgep13, align 4)
  ; CHECK:   $lr = t2SUBri killed renamable $lr, 1, 14 /* CC::al */, $noreg, def $cpsr
  ; CHECK:   $r5 = tMOVr killed $lr, 14 /* CC::al */, $noreg
  ; CHECK:   tBcc %bb.4, 1 /* CC::ne */, killed $cpsr
  ; CHECK:   tB %bb.5, 14 /* CC::al */, $noreg
  ; CHECK: bb.5.middle.block:
  ; CHECK:   successors: %bb.7(0x80000000)
  ; CHECK:   liveins: $r2, $r3, $r4, $r7, $r12
  ; CHECK:   tCMPr killed renamable $r4, killed renamable $r2, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   $lr = tMOVr killed $r7, 14 /* CC::al */, $noreg
  ; CHECK:   t2IT 0, 8, implicit-def $itstate
  ; CHECK:   tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r4, def $r5, def $r7, def $pc, implicit killed $itstate
  ; CHECK:   tB %bb.7, 14 /* CC::al */, $noreg
  ; CHECK: bb.6:
  ; CHECK:   successors: %bb.7(0x80000000)
  ; CHECK:   liveins: $r0, $r1, $r2
  ; CHECK:   $lr = tMOVr killed $r2, 14 /* CC::al */, $noreg
  ; CHECK:   $r12 = tMOVr killed $r0, 14 /* CC::al */, $noreg
  ; CHECK:   $r3 = tMOVr killed $r1, 14 /* CC::al */, $noreg
  ; CHECK: bb.7.while.body.preheader19:
  ; CHECK:   successors: %bb.8(0x80000000)
  ; CHECK:   liveins: $lr, $r3, $r12
  ; CHECK:   renamable $r0, dead $cpsr = tSUBi3 killed renamable $r3, 4, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $r1 = t2SUBri killed renamable $r12, 4, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   $lr = t2DLS killed renamable $lr
  ; CHECK: bb.8.while.body:
  ; CHECK:   successors: %bb.8(0x7c000000), %bb.9(0x04000000)
  ; CHECK:   liveins: $lr, $r0, $r1
  ; CHECK:   renamable $s0 = VLDRS renamable $r1, 1, 14 /* CC::al */, $noreg :: (load 4 from %ir.scevgep3)
  ; CHECK:   renamable $r1, dead $cpsr = tADDi8 killed renamable $r1, 4, 14 /* CC::al */, $noreg
  ; CHECK:   renamable $s0 = nnan ninf nsz arcp contract afn reassoc VABSS killed renamable $s0, 14 /* CC::al */, $noreg
  ; CHECK:   VSTRS killed renamable $s0, renamable $r0, 1, 14 /* CC::al */, $noreg :: (store 4 into %ir.scevgep7)
  ; CHECK:   renamable $r0, dead $cpsr = tADDi8 killed renamable $r0, 4, 14 /* CC::al */, $noreg
  ; CHECK:   $lr = t2LEUpdate killed renamable $lr, %bb.8
  ; CHECK: bb.9.while.end:
  ; CHECK:   tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $r5, def $r7, def $pc
  bb.0.entry:
    successors: %bb.9(0x30000000), %bb.1(0x50000000)
    liveins: $r0, $r1, $r2, $r4, $r5, $r7, $lr

    frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
    frame-setup CFI_INSTRUCTION def_cfa_offset 16
    frame-setup CFI_INSTRUCTION offset $lr, -4
    frame-setup CFI_INSTRUCTION offset $r7, -8
    frame-setup CFI_INSTRUCTION offset $r5, -12
    frame-setup CFI_INSTRUCTION offset $r4, -16
    tCMPi8 renamable $r2, 0, 14, $noreg, implicit-def $cpsr
    tBcc %bb.9, 0, killed $cpsr

  bb.1.while.body.preheader:
    successors: %bb.6(0x40000000), %bb.2(0x40000000)
    liveins: $r0, $r1, $r2

    tCMPi8 renamable $r2, 4, 14, $noreg, implicit-def $cpsr
    tBcc %bb.6, 3, killed $cpsr

  bb.2.vector.memcheck:
    successors: %bb.3(0x40000000), %bb.6(0x40000000)
    liveins: $r0, $r1, $r2

    renamable $r3 = t2ADDrs renamable $r0, renamable $r2, 18, 14, $noreg, $noreg
    tCMPr killed renamable $r3, renamable $r1, 14, $noreg, implicit-def $cpsr
    t2IT 8, 4, implicit-def $itstate
    renamable $r3 = t2ADDrs renamable $r1, renamable $r2, 18, 8, $cpsr, $noreg, implicit $itstate
    tCMPr killed renamable $r3, renamable $r0, 8, killed $cpsr, implicit-def $cpsr, implicit killed $itstate
    tBcc %bb.6, 8, killed $cpsr

  bb.3.vector.ph:
    successors: %bb.4(0x80000000)
    liveins: $r0, $r1, $r2

    renamable $r4 = t2BICri renamable $r2, 3, 14, $noreg, $noreg
    renamable $r3, dead $cpsr = tMOVi8 1, 14, $noreg
    renamable $r12 = t2SUBri renamable $r4, 4, 14, $noreg, $noreg
    renamable $r7, dead $cpsr = tSUBrr renamable $r2, renamable $r4, 14, $noreg
    renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14, $noreg, $noreg
    renamable $r12 = t2ADDrs renamable $r0, renamable $r4, 18, 14, $noreg, $noreg
    $lr = t2DoLoopStart renamable $r3
    renamable $r0, dead $cpsr = tSUBi8 killed renamable $r0, 16, 14, $noreg
    $r5 = tMOVr killed $r3, 14, $noreg
    renamable $r3 = t2ADDrs renamable $r1, renamable $r4, 18, 14, $noreg, $noreg
    renamable $r1, dead $cpsr = tSUBi8 killed renamable $r1, 16, 14, $noreg

  bb.4.vector.body:
    successors: %bb.4(0x7c000000), %bb.5(0x04000000)
    liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $r12

    renamable $r0, renamable $q0 = MVE_VLDRWU32_pre killed renamable $r0, 16, 0, $noreg :: (load 16 from %ir.scevgep18, align 4)
    $lr = tMOVr killed $r5, 14, $noreg
    renamable $q0 = nnan ninf nsz arcp contract afn reassoc MVE_VABSf32 killed renamable $q0, 0, $noreg, undef renamable $q0
    renamable $r1 = MVE_VSTRBU8_pre killed renamable $q0, killed renamable $r1, 16, 0, $noreg :: (store 16 into %ir.scevgep13, align 4)
    renamable $lr = t2LoopDec killed renamable $lr, 1
    $r5 = tMOVr $lr, 14, $noreg
    t2LoopEnd killed renamable $lr, %bb.4, implicit-def dead $cpsr
    tB %bb.5, 14, $noreg

  bb.5.middle.block:
    successors: %bb.7(0x80000000)
    liveins: $r2, $r3, $r4, $r7, $r12

    tCMPr killed renamable $r4, killed renamable $r2, 14, $noreg, implicit-def $cpsr
    $lr = tMOVr killed $r7, 14, $noreg
    t2IT 0, 8, implicit-def $itstate
    tPOP_RET 0, killed $cpsr, def $r4, def $r5, def $r7, def $pc, implicit killed $itstate
    tB %bb.7, 14, $noreg

  bb.6:
    successors: %bb.7(0x80000000)
    liveins: $r0, $r1, $r2

    $lr = tMOVr killed $r2, 14, $noreg
    $r12 = tMOVr killed $r0, 14, $noreg
    $r3 = tMOVr killed $r1, 14, $noreg

  bb.7.while.body.preheader19:
    successors: %bb.8(0x80000000)
    liveins: $lr, $r3, $r12

    renamable $r0, dead $cpsr = tSUBi3 killed renamable $r3, 4, 14, $noreg
    renamable $r1 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
    $lr = t2DoLoopStart renamable $lr

  bb.8.while.body:
    successors: %bb.8(0x7c000000), %bb.9(0x04000000)
    liveins: $lr, $r0, $r1

    renamable $s0 = VLDRS renamable $r1, 1, 14, $noreg :: (load 4 from %ir.scevgep3)
    renamable $r1, dead $cpsr = tADDi8 killed renamable $r1, 4, 14, $noreg
    renamable $s0 = nnan ninf nsz arcp contract afn reassoc VABSS killed renamable $s0, 14, $noreg
    VSTRS killed renamable $s0, renamable $r0, 1, 14, $noreg :: (store 4 into %ir.scevgep7)
    renamable $r0, dead $cpsr = tADDi8 killed renamable $r0, 4, 14, $noreg
    renamable $lr = t2LoopDec killed renamable $lr, 1
    t2LoopEnd renamable $lr, %bb.8, implicit-def dead $cpsr
    tB %bb.9, 14, $noreg

  bb.9.while.end:
    tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc

...