Lines Matching refs:MFence
19197 // Use mfence if we have SSE2 or we're on x86-64 (even if we asked for
19209 // harmful as it introduces a mfence.
19231 // lowered to just a load without a fence. A mfence flushes the store buffer,
19245 // is probably a small win, and x86 processors without mfence are rare
19249 Function *MFence =
19251 Builder.CreateCall(MFence, {});
19274 return DAG.getNode(X86ISD::MFENCE, dl, MVT::Other, Op.getOperand(0));
20585 case X86ISD::MFENCE: return "X86ISD::MFENCE";
