third_party/llvm-project/llvm/test/CodeGen/AArch64/machine-outliner-calls.mir

# RUN: llc -mtriple=aarch64--- -run-pass=prologepilog -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
--- |
  define void @baz() #0 {
    ret void
  }
  
  define void @bar(i32 %a) #0 {
    ret void
  }
  
  attributes #0 = { noredzone }
...
---

name:            bar
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $lr, $w8
    $sp = frame-setup SUBXri $sp, 32, 0
    $fp = frame-setup ADDXri $sp, 16, 0

  bb.1:
    BL @baz, implicit-def dead $lr, implicit $sp
    $w17 = ORRWri $wzr, 1
    $w17 = ORRWri $wzr, 1
    $w0 = ORRWri $wzr, 4

    BL @baz, implicit-def dead $lr, implicit $sp
    $w17 = ORRWri $wzr, 1
    $w17 = ORRWri $wzr, 1
    $w0 = ORRWri $wzr, 3
    
    BL @baz, implicit-def dead $lr, implicit $sp
    $w17 = ORRWri $wzr, 1
    $w17 = ORRWri $wzr, 1
    $w0 = ORRWri $wzr, 2

    BL @baz, implicit-def dead $lr, implicit $sp
    $w17 = ORRWri $wzr, 1
    $w17 = ORRWri $wzr, 1
    $w0 = ORRWri $wzr, 1
    

  bb.2:
    $fp, $lr = LDPXi $sp, 2
    RET undef $lr
...
---
name:            baz
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $lr, $w8
    RET undef $lr

# CHECK: name:            OUTLINED_FUNCTION_0
# CHECK-DAG: bb.0:
# CHECK-DAG: frame-setup CFI_INSTRUCTION def_cfa_offset -16
# CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $w30, 16
# CHECK-NEXT: early-clobber $sp = STRXpre $lr, $sp, -16
# CHECK-NEXT: BL @baz, implicit-def dead $lr, implicit $sp
# CHECK-NEXT: $w17 = ORRWri $wzr, 1
# CHECK-NEXT: $w17 = ORRWri $wzr, 1
# CHECK-NEXT: early-clobber $sp, $lr = LDRXpost $sp, 16
# CHECK-NEXT: RET undef $lr