third_party/LLVM/test/CodeGen/X86/atomic-load-store.ll

; RUN: llc < %s -mtriple=x86_64-apple-macosx10.7.0 -verify-machineinstrs | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-apple-macosx10.7.0 -O0 | FileCheck %s

define void @test1(i32* %ptr, i32 %val1) {
; CHECK: test1
; CHECK: xchgl	%esi, (%rdi)
  store atomic i32 %val1, i32* %ptr seq_cst, align 4
  ret void
}

define void @test2(i32* %ptr, i32 %val1) {
; CHECK: test2
; CHECK: movl	%esi, (%rdi)
  store atomic i32 %val1, i32* %ptr release, align 4
  ret void
}

define i32 @test3(i32* %ptr) {
; CHECK: test3
; CHECK: movl	(%rdi), %eax
  %val = load atomic i32* %ptr seq_cst, align 4
  ret i32 %val
}