# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \
# RUN:   -stop-after=prologepilog | FileCheck %s
# Check save_reg_x, save_reg

# CHECK:      early-clobber $sp = frame-setup STRXpre killed $x19, $sp, -16
# CHECK-NEXT: frame-setup SEH_SaveReg_X 19, -16
# CHECK-NEXT: frame-setup STRXui killed $x22, $sp, 1
# CHECK-NEXT: frame-setup SEH_SaveReg 22, 8
# CHECK-NEXT: frame-setup SEH_PrologEnd
# CHECK:      frame-destroy SEH_EpilogStart
# CHECK-NEXT: $x22 = frame-destroy LDRXui $sp, 1
# CHECK-NEXT: frame-destroy SEH_SaveReg 22, 8
# CHECK-NEXT: early-clobber $sp, $x19 = frame-destroy LDRXpost $sp, 16
# CHECK-NEXT: frame-destroy SEH_SaveReg_X 19, -16
# CHECK-NEXT: frame-destroy SEH_EpilogEnd
# CHECK-NEXT: RET_ReallyLR implicit $x0
...
---
name:            test
alignment:       4
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       true
registers:
liveins:
  - { reg: '$w0', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       112
  offsetAdjustment: 0
  maxAlignment:    8
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 0
  hasOpaqueSPAdjustment: true
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
stack:
constants:
body:             |
  bb.0.entry:
    liveins: $x0, $x1
    $x19 = ADDXrr $x0, killed $x1
    $x22 = ADDXrr killed $x19, $x0
    $x0 = COPY killed $x22
    RET_ReallyLR implicit $x0
...