File: atomic.ll

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llvm-toolchain-9 1%3A9.0.1-16.1
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; RUN: opt < %s -sccp -S | FileCheck %s

define i1 @test_cmpxchg(i32* %addr, i32 %desired, i32 %new) {
; CHECK-LABEL: @test_cmpxchg
; CHECK: cmpxchg i32* %addr, i32 %desired, i32 %new seq_cst seq_cst
  %val = cmpxchg i32* %addr, i32 %desired, i32 %new seq_cst seq_cst
  %res = extractvalue { i32, i1 } %val, 1
  ret i1 %res
}