# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=thumbv8.1m.main-none-eabi -mattr=+mve %s -run-pass=arm-mve-vpt-opts --verify-machineinstrs -o - | FileCheck %s

--- |
  target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
  target triple = "thumbv8.1m.main-none-eabi"

  define i32 @test(i64* nocapture %x, i32 %n, i64 %a, i32 %m) {
  entry:
    %cmp.not = icmp eq i32 %n, 0
    %0 = call { i32, i1 } @llvm.test.start.loop.iterations.i32(i32 %n)
    %1 = extractvalue { i32, i1 } %0, 1
    %2 = extractvalue { i32, i1 } %0, 0
    br i1 %1, label %if.then, label %if.end

  if.then:                                          ; preds = %entry
    %conv = sext i32 %m to i64
    %div = sdiv i64 %a, %conv
    %scevgep = getelementptr i64, i64* %x, i32 %m
    br label %do.body

  do.body:                                          ; preds = %do.body, %if.then
    %lsr.iv = phi i64* [ %scevgep1, %do.body ], [ %scevgep, %if.then ]
    %3 = phi i32 [ %2, %if.then ], [ %4, %do.body ]
    store i64 %div, i64* %lsr.iv, align 8
    %scevgep1 = getelementptr i64, i64* %lsr.iv, i32 1
    %4 = call i32 @llvm.loop.decrement.reg.i32(i32 %3, i32 1)
    %5 = icmp ne i32 %4, 0
    br i1 %5, label %do.body, label %if.end

  if.end:                                           ; preds = %do.body, %entry
    ret i32 undef
  }

  declare { i32, i1 } @llvm.test.start.loop.iterations.i32(i32)
  declare i32 @llvm.loop.decrement.reg.i32(i32, i32)

...
---
name:            test
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
  - { id: 2, class: gpr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gprnopc, preferred-register: '' }
  - { id: 5, class: gprlr, preferred-register: '' }
  - { id: 6, class: gpr, preferred-register: '' }
  - { id: 7, class: gpr, preferred-register: '' }
  - { id: 8, class: gprnopc, preferred-register: '' }
  - { id: 9, class: rgpr, preferred-register: '' }
  - { id: 10, class: gpr, preferred-register: '' }
  - { id: 11, class: gpr, preferred-register: '' }
  - { id: 12, class: gpr, preferred-register: '' }
  - { id: 13, class: gpr, preferred-register: '' }
  - { id: 14, class: rgpr, preferred-register: '' }
  - { id: 15, class: gprlr, preferred-register: '' }
  - { id: 16, class: rgpr, preferred-register: '' }
  - { id: 17, class: gpr, preferred-register: '' }
  - { id: 18, class: gpr, preferred-register: '' }
  - { id: 19, class: gprnopc, preferred-register: '' }
  - { id: 20, class: rgpr, preferred-register: '' }
  - { id: 21, class: gprlr, preferred-register: '' }
  - { id: 22, class: gprlr, preferred-register: '' }
  - { id: 23, class: gpr, preferred-register: '' }
liveins:
  - { reg: '$r0', virtual-reg: '%8' }
  - { reg: '$r1', virtual-reg: '%9' }
  - { reg: '$r2', virtual-reg: '%10' }
  - { reg: '$r3', virtual-reg: '%11' }
fixedStack:
  - { id: 0, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
      isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
body:             |
  ; CHECK-LABEL: name: test
  ; CHECK: bb.0.entry:
  ; CHECK:   successors: %bb.1(0x40000000), %bb.3(0x40000000)
  ; CHECK:   liveins: $r0, $r1, $r2, $r3
  ; CHECK:   [[COPY:%[0-9]+]]:gpr = COPY $r3
  ; CHECK:   [[COPY1:%[0-9]+]]:gpr = COPY $r2
  ; CHECK:   [[COPY2:%[0-9]+]]:rgpr = COPY $r1
  ; CHECK:   [[COPY3:%[0-9]+]]:gprnopc = COPY $r0
  ; CHECK:   t2CMPri [[COPY2]], 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
  ; CHECK:   t2Bcc %bb.3, 0 /* CC::eq */, $cpsr
  ; CHECK:   t2B %bb.1, 14 /* CC::al */, $noreg
  ; CHECK: bb.1.if.then:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   [[COPY4:%[0-9]+]]:gpr = COPY [[COPY]]
  ; CHECK:   [[COPY5:%[0-9]+]]:gpr = COPY [[COPY1]]
  ; CHECK:   [[t2LDRi12_:%[0-9]+]]:rgpr = t2LDRi12 %fixed-stack.0, 0, 14 /* CC::al */, $noreg :: (load (s32) from %fixed-stack.0, align 8)
  ; CHECK:   [[t2ASRri:%[0-9]+]]:rgpr = t2ASRri [[t2LDRi12_]], 31, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
  ; CHECK:   $r0 = COPY [[COPY5]]
  ; CHECK:   $r1 = COPY [[COPY4]]
  ; CHECK:   $r2 = COPY [[t2LDRi12_]]
  ; CHECK:   $r3 = COPY [[t2ASRri]]
  ; CHECK:   tBL 14 /* CC::al */, $noreg, &__aeabi_ldivmod, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit $r3, implicit-def $sp, implicit-def $r0, implicit-def $r1
  ; CHECK:   ADJCALLSTACKUP 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
  ; CHECK:   [[COPY6:%[0-9]+]]:gpr = COPY $r0
  ; CHECK:   [[COPY7:%[0-9]+]]:gpr = COPY $r1
  ; CHECK:   [[COPY8:%[0-9]+]]:gpr = COPY [[COPY7]]
  ; CHECK:   [[COPY9:%[0-9]+]]:gpr = COPY [[COPY6]]
  ; CHECK:   [[t2ADDrs:%[0-9]+]]:gprnopc = t2ADDrs [[COPY3]], [[t2LDRi12_]], 26, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   [[COPY10:%[0-9]+]]:gpr = COPY [[t2ADDrs]]
  ; CHECK:   [[t2DoLoopStart:%[0-9]+]]:gprlr = t2DoLoopStart killed [[COPY2]]
  ; CHECK: bb.2.do.body:
  ; CHECK:   successors: %bb.2(0x7c000000), %bb.3(0x04000000)
  ; CHECK:   [[PHI:%[0-9]+]]:gprnopc = PHI [[COPY10]], %bb.1, %6, %bb.2
  ; CHECK:   [[PHI1:%[0-9]+]]:gprlr = PHI [[t2DoLoopStart]], %bb.1, %21, %bb.2
  ; CHECK:   t2STRi12 [[COPY9]], [[PHI]], 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.lsr.iv, align 8)
  ; CHECK:   t2STRi12 [[COPY8]], [[PHI]], 4, 14 /* CC::al */, $noreg :: (store (s32) into %ir.lsr.iv + 4, basealign 8)
  ; CHECK:   [[t2ADDri:%[0-9]+]]:rgpr = t2ADDri [[PHI]], 8, 14 /* CC::al */, $noreg, $noreg
  ; CHECK:   [[COPY11:%[0-9]+]]:gpr = COPY [[t2ADDri]]
  ; CHECK:   [[t2LoopEndDec:%[0-9]+]]:gprlr = t2LoopEndDec [[PHI1]], %bb.2, implicit-def $cpsr
  ; CHECK:   t2B %bb.3, 14 /* CC::al */, $noreg
  ; CHECK: bb.3.if.end:
  ; CHECK:   [[DEF:%[0-9]+]]:gpr = IMPLICIT_DEF
  ; CHECK:   $r0 = COPY [[DEF]]
  ; CHECK:   tBX_RET 14 /* CC::al */, $noreg, implicit $r0
  bb.0.entry:
    successors: %bb.1(0x40000000), %bb.3(0x40000000)
    liveins: $r0, $r1, $r2, $r3

    %11:gpr = COPY $r3
    %10:gpr = COPY $r2
    %9:rgpr = COPY $r1
    %8:gprnopc = COPY $r0
    %15:gprlr = t2WhileLoopSetup killed %9
    t2WhileLoopStart %15, %bb.3, implicit-def dead $cpsr
    t2B %bb.1, 14 /* CC::al */, $noreg

  bb.1.if.then:
    successors: %bb.2(0x80000000)

    %13:gpr = COPY %11
    %12:gpr = COPY %10
    %14:rgpr = t2LDRi12 %fixed-stack.0, 0, 14 /* CC::al */, $noreg :: (load (s32) from %fixed-stack.0, align 8)
    %0:gpr = COPY %15
    %16:rgpr = t2ASRri %14, 31, 14 /* CC::al */, $noreg, $noreg
    ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    $r0 = COPY %12
    $r1 = COPY %13
    $r2 = COPY %14
    $r3 = COPY %16
    tBL 14 /* CC::al */, $noreg, &__aeabi_ldivmod, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit $r3, implicit-def $sp, implicit-def $r0, implicit-def $r1
    ADJCALLSTACKUP 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp
    %17:gpr = COPY $r0
    %18:gpr = COPY $r1
    %2:gpr = COPY %18
    %1:gpr = COPY %17
    %19:gprnopc = t2ADDrs %8, %14, 26, 14 /* CC::al */, $noreg, $noreg
    %3:gpr = COPY %19

  bb.2.do.body:
    successors: %bb.2(0x7c000000), %bb.3(0x04000000)

    %4:gprnopc = PHI %3, %bb.1, %6, %bb.2
    %5:gprlr = PHI %0, %bb.1, %7, %bb.2
    t2STRi12 %1, %4, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.lsr.iv, align 8)
    t2STRi12 %2, %4, 4, 14 /* CC::al */, $noreg :: (store (s32) into %ir.lsr.iv + 4, basealign 8)
    %20:rgpr = t2ADDri %4, 8, 14 /* CC::al */, $noreg, $noreg
    %6:gpr = COPY %20
    %21:gprlr = t2LoopDec %5, 1
    %7:gpr = COPY %21
    t2LoopEnd %21, %bb.2, implicit-def dead $cpsr
    t2B %bb.3, 14 /* CC::al */, $noreg

  bb.3.if.end:
    %23:gpr = IMPLICIT_DEF
    $r0 = COPY %23
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...