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      1 ; RUN: opt < %s | opt -S | FileCheck %s
      2 ; Basic smoke test for atomic operations.
      3 
      4 define void @f(i32* %x) {
      5   ; CHECK: load atomic i32* %x unordered, align 4
      6   load atomic i32* %x unordered, align 4
      7   ; CHECK: load atomic volatile i32* %x singlethread acquire, align 4
      8   load atomic volatile i32* %x singlethread acquire, align 4
      9   ; CHECK: store atomic i32 3, i32* %x release, align 4
     10   store atomic i32 3, i32* %x release, align 4
     11   ; CHECK: store atomic volatile i32 3, i32* %x singlethread monotonic, align 4
     12   store atomic volatile i32 3, i32* %x singlethread monotonic, align 4
     13   ; CHECK: cmpxchg i32* %x, i32 1, i32 0 singlethread monotonic
     14   cmpxchg i32* %x, i32 1, i32 0 singlethread monotonic
     15   ; CHECK: cmpxchg volatile i32* %x, i32 0, i32 1 acq_rel
     16   cmpxchg volatile i32* %x, i32 0, i32 1 acq_rel
     17   ; CHECK: atomicrmw add i32* %x, i32 10 seq_cst
     18   atomicrmw add i32* %x, i32 10 seq_cst
     19   ; CHECK: atomicrmw volatile xchg  i32* %x, i32 10 monotonic
     20   atomicrmw volatile xchg i32* %x, i32 10 monotonic
     21   ; CHECK: fence singlethread release
     22   fence singlethread release
     23   ; CHECK: fence seq_cst
     24   fence seq_cst
     25   ret void
     26 }
     27