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view test/CodeGen/X86/volatile.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 95c75e76d11b
children 803732b1fca8
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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, double* @x
  store volatile double 0.0, double* @x
  store volatile double 0.0, double* @x
  %b = load volatile double, double* @x
  ret void
}

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