llvm.org GIT mirror llvm / testing test / CodeGen / AArch64 / cfi_restore.mir
testing

Tree @testing (Download .tar.gz)

cfi_restore.mir @testingraw · history · blame

# RUN: llc -mtriple=aarch64-- -start-after prologepilog -o - %s | FileCheck %s
---
name:            fun
# CHECK: .cfi_startproc
tracksRegLiveness: true
frameInfo:
  stackSize:       16
  maxAlignment:    8
  hasCalls:        true
stack:
  - { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: 0,
      callee-saved-register: '%lr' }
  - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: 0,
      callee-saved-register: '%fp' }
body:             |
  bb.0:
    liveins: %fp, %lr

    %sp = frame-setup SUBXri %sp, 16, 0
    frame-setup STRXui killed %fp, %sp, 0 :: (store 8 into %stack.1)
    frame-setup CFI_INSTRUCTION offset %w29, -16
    ; CHECK: .cfi_offset w29, -16
    frame-setup STRXui killed %lr, %sp, 1 :: (store 8 into %stack.0)
    frame-setup CFI_INSTRUCTION offset %w30, -8
    ; CHECK: .cfi_offset w30, -8
    %fp = frame-setup ADDXri %sp, 0, 0
    frame-setup CFI_INSTRUCTION def_cfa %w29, 16
    %lr = LDRXui %sp, 1 :: (load 8 from %stack.0)
    CFI_INSTRUCTION restore %w30
    ; CHECK: .cfi_restore w30
    %fp = LDRXui %sp, 0 :: (load 8 from %stack.1)
    CFI_INSTRUCTION restore %w29
    ; CHECK: .cfi_restore w29
    %sp = ADDXri %sp, 16, 0
    RET_ReallyLR
    ; CHECK: .cfi_endproc
...