; RUN: llc < %s -march=x86 -mattr=+sse2 | not grep sfence ; RUN: llc < %s -march=x86 -mattr=+sse2 | not grep lfence ; RUN: llc < %s -march=x86 -mattr=+sse2 | grep mfence define void @test() { fence seq_cst ret void }