File: load64.ll

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llvm-toolchain-11 1%3A11.0.1-2
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; RUN: llc -mattr=avr6 < %s -march=avr | FileCheck %s

; CHECK-LABEL: atomic_load64
; CHECK: call __sync_val_compare_and_swap_8
define i64 @atomic_load64(i64* %foo) {
  %val = load atomic i64, i64* %foo unordered, align 8
  ret i64 %val
}

; CHECK-LABEL: atomic_load_sub64
; CHECK: call __sync_fetch_and_sub_8
define i64 @atomic_load_sub64(i64* %foo) {
  %val = atomicrmw sub i64* %foo, i64 13 seq_cst
  ret i64 %val
}