test/CodeGen/AArch64/rvmarker-pseudo-expansion-and-outlining.mir

# RUN: llc -enable-machine-outliner -start-before=aarch64-expand-pseudo -mtriple=arm64-apple-ios -o - %s | FileCheck %s
#
#  The calls to _cb1 & _cb2 should be followed by the marker instruction
#  'mov x29, x29'. The marker should not get outlined.
#
# CHECK-LABEL: _fn1:
# CHECK:       bb.0:
# CHECK:        bl _cb1
# CHECK-NEXT:   mov x29, x29
# CHECK-NEXT:   bl _OUTLINED_FUNCTION_0
#
# CHECK-LABEL: _fn2:
# CHECK:       bb.0:
# CHECK:        bl _cb2
# CHECK-NEXT:   mov x29, x29
# CHECK-NEXT:   bl _OUTLINED_FUNCTION_0
#
# CHECK-LABEL: _OUTLINED_FUNCTION_0:
# CHECK:       bb.0:
# CHECK-NEXT:    orr w12, wzr, #0x3
# CHECK-NEXT:    orr w12, wzr, #0x3
# CHECK-NEXT:    orr w12, wzr, #0x3
# CHECK-NEXT:    orr w12, wzr, #0x3
# CHECK-NEXT:    ret

--- |
  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
  target triple = "arm64-apple-ios"

  define void @fn1() {
    ret void
  }

  define void @fn2() {
    ret void
  }

  declare void @cb1()

  declare void @cb2()
...
---
name:            fn1
tracksRegLiveness: true
machineFunctionInfo:
  hasRedZone:      false
body:             |
  bb.0:
    liveins: $lr

    BLR_RVMARKER @cb1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $x0
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $lr = ORRXri $xzr, 1

    RET undef $lr
...
---
name:            fn2
tracksRegLiveness: true
machineFunctionInfo:
  hasRedZone:      false
body:             |
  bb.0:
    liveins: $lr, $x19, $x20, $lr

    BLR_RVMARKER @cb2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $x0
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $w12 = ORRWri $wzr, 1
    $lr = ORRXri $xzr, 1

    RET undef $lr
...