File: select-atomic-load-store.mir

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llvm-toolchain-11 1%3A11.0.1-2
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# 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(i8* %ptr) {
    %v = load atomic i8, i8* %ptr acquire, align 8
    ret i8 %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: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
    ; CHECK: [[LDARB:%[0-9]+]]:gpr32 = LDARB [[COPY]] :: (load acquire 1 from %ir.ptr, align 8)
    ; CHECK: $w0 = COPY [[LDARB]]
    ; CHECK: RET_ReallyLR implicit $w0
    %0:gpr(p0) = COPY $x0
    %2:gpr(s32) = G_LOAD %0(p0) :: (load acquire 1 from %ir.ptr, align 8)
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

...