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

18 lines
445 B
LLVM

; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 | grep movsd | count 5
; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 -fast | 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
}