File: volatile.ll

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llvm-toolchain-3.5 1%3A3.5-10
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; RUN: llc < %s -march=x86 -mattr=sse2 | grep movsd | count 5
; RUN: llc < %s -march=x86 -mattr=sse2 -O0 | grep -v esp | grep movsd | count 5

@x = external global double

define void @foo() nounwind  {
  %a = load volatile double* @x
  store volatile double 0.0, double* @x
  store volatile double 0.0, double* @x
  %b = load volatile double* @x
  ret void
}

define void @bar() nounwind  {
  %c = load volatile double* @x
  ret void
}