llvm-6502/test/CodeGen/X86/volatile.ll

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