third_party/llvm-7.0/llvm/test/CodeGen/AArch64/GlobalISel/select-blockaddress.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select %s | FileCheck %s
# RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select -code-model=large %s | FileCheck %s --check-prefix=LARGE
--- |
  ; ModuleID = 'blockaddress.ll'
  source_filename = "blockaddress.ll"
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-none-linux-gnu"

  @addr = global i8* null

  define void @test_blockaddress() {
    store i8* blockaddress(@test_blockaddress, %block), i8** @addr
    indirectbr i8* blockaddress(@test_blockaddress, %block), [label %block]

  block:                                            ; preds = %0
    ret void
  }

...
---
name:            test_blockaddress
alignment:       2
legalized:       true
regBankSelected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gpr }
  - { id: 1, class: gpr }
body:             |
  ; CHECK-LABEL: name: test_blockaddress
  ; CHECK: bb.0 (%ir-block.0):
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   [[MOVaddrBA:%[0-9]+]]:gpr64 = MOVaddrBA target-flags(aarch64-page) blockaddress(@test_blockaddress, %ir-block.block), target-flags(aarch64-pageoff, aarch64-nc) blockaddress(@test_blockaddress, %ir-block.block)
  ; CHECK:   [[MOVaddr:%[0-9]+]]:gpr64common = MOVaddr target-flags(aarch64-page) @addr, target-flags(aarch64-pageoff, aarch64-nc) @addr
  ; CHECK:   STRXui [[MOVaddrBA]], [[MOVaddr]], 0 :: (store 8 into @addr)
  ; CHECK:   BR [[MOVaddrBA]]
  ; CHECK: bb.1.block (address-taken):
  ; CHECK:   RET_ReallyLR
  ; LARGE-LABEL: name: test_blockaddress
  ; LARGE: bb.0 (%ir-block.0):
  ; LARGE:   successors: %bb.1(0x80000000)
  ; LARGE:   [[MOVZXi:%[0-9]+]]:gpr64 = MOVZXi target-flags(aarch64-g0, aarch64-nc) blockaddress(@test_blockaddress, %ir-block.block), 0
  ; LARGE:   [[MOVKXi:%[0-9]+]]:gpr64 = MOVKXi [[MOVZXi]], target-flags(aarch64-g1, aarch64-nc) blockaddress(@test_blockaddress, %ir-block.block), 16
  ; LARGE:   [[MOVKXi1:%[0-9]+]]:gpr64 = MOVKXi [[MOVKXi]], target-flags(aarch64-g2, aarch64-nc) blockaddress(@test_blockaddress, %ir-block.block), 32
  ; LARGE:   [[MOVKXi2:%[0-9]+]]:gpr64 = MOVKXi [[MOVKXi1]], target-flags(aarch64-g3) blockaddress(@test_blockaddress, %ir-block.block), 48
  ; LARGE:   [[MOVZXi1:%[0-9]+]]:gpr64 = MOVZXi target-flags(aarch64-g0, aarch64-nc) @addr, 0
  ; LARGE:   [[MOVKXi3:%[0-9]+]]:gpr64 = MOVKXi [[MOVZXi1]], target-flags(aarch64-g1, aarch64-nc) @addr, 16
  ; LARGE:   [[MOVKXi4:%[0-9]+]]:gpr64 = MOVKXi [[MOVKXi3]], target-flags(aarch64-g2, aarch64-nc) @addr, 32
  ; LARGE:   [[MOVKXi5:%[0-9]+]]:gpr64common = MOVKXi [[MOVKXi4]], target-flags(aarch64-g3) @addr, 48
  ; LARGE:   STRXui [[MOVKXi2]], [[MOVKXi5]], 0 :: (store 8 into @addr)
  ; LARGE:   BR [[MOVKXi2]]
  ; LARGE: bb.1.block (address-taken):
  ; LARGE:   RET_ReallyLR
  bb.1 (%ir-block.0):
    %0:gpr(p0) = G_BLOCK_ADDR blockaddress(@test_blockaddress, %ir-block.block)
    %1:gpr(p0) = G_GLOBAL_VALUE @addr
    G_STORE %0(p0), %1(p0) :: (store 8 into @addr)
    G_BRINDIRECT %0(p0)

  bb.2.block (address-taken):
    RET_ReallyLR

...