File: extra-callee-save.mir

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#RUN: llc -mtriple=aarch64-- -run-pass prologepilog %s -o - | FileCheck %s
# Check that we spill a scratch register, but not also an additional
# emergency spill slot.
---
name: big_stack
# CHECK-LABEL: name: big_stack
# CHECK: frame-setup STPXi killed $x20, killed $x19
# CHECK: $sp = frame-setup SUBXri $sp, 8, 12
# CHECK-NOT: frame-setup SUBXri $sp, 16, 0
tracksRegLiveness: true
stack:
  - { id: 0, name: '', size: 32761, alignment: 8 }
body: |
  bb.0:
    $x19 = IMPLICIT_DEF
  ; $x20 can be used as scratch register.
    $x21 = IMPLICIT_DEF
    $x22 = IMPLICIT_DEF
    $x23 = IMPLICIT_DEF
    $x24 = IMPLICIT_DEF
    $x25 = IMPLICIT_DEF
    $x26 = IMPLICIT_DEF
    $x27 = IMPLICIT_DEF
    $x28 = IMPLICIT_DEF
    $lr  = IMPLICIT_DEF
    $fp  = IMPLICIT_DEF
    RET_ReallyLR
...