llvm/test/CodeGen/AArch64/GlobalISel/select-atomic-load-store.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
--- |
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64"

  define i8 @load_acq_i8(ptr %ptr) {
    %v = load atomic i8, ptr %ptr acquire, align 8
    ret i8 %v
  }

  define i32 @anyext_load_monotonic_i32() {
    %v = load atomic i32, ptr null monotonic, align 4
    ret i32 %v
  }

...
---
name:            load_acq_i8
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
liveins:
  - { reg: '$x0' }
machineFunctionInfo: {}
body:             |
  bb.1:
    liveins: $x0

    ; CHECK-LABEL: name: load_acq_i8
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
    ; CHECK-NEXT: [[LDARB:%[0-9]+]]:gpr32 = LDARB [[COPY]] :: (load acquire (s8) from %ir.ptr, align 8)
    ; CHECK-NEXT: $w0 = COPY [[LDARB]]
    ; CHECK-NEXT: RET_ReallyLR implicit $w0
    %0:gpr(p0) = COPY $x0
    %2:gpr(s32) = G_LOAD %0(p0) :: (load acquire (s8) from %ir.ptr, align 8)
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...
---
name:            anyext_load_monotonic_i32
legalized:       true
regBankSelected: true
tracksRegLiveness: true
body:             |
  bb.1:
    ; CHECK-LABEL: name: anyext_load_monotonic_i32
    ; CHECK: [[COPY:%[0-9]+]]:gpr64common = COPY $xzr
    ; CHECK-NEXT: [[LDRWui:%[0-9]+]]:gpr32 = LDRWui [[COPY]], 0 :: (load monotonic (s32) from `ptr null`)
    ; CHECK-NEXT: %ld:gpr64all = SUBREG_TO_REG 0, [[LDRWui]], %subreg.sub_32
    ; CHECK-NEXT: $x0 = COPY %ld
    ; CHECK-NEXT: RET_ReallyLR implicit $x0
    %1:gpr(p0) = G_CONSTANT i64 0
    %ld:gpr(s64) = G_LOAD %1(p0) :: (load monotonic (s32) from `ptr null`)
    $x0 = COPY %ld(s64)
    RET_ReallyLR implicit $x0

...