1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp b/llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp
index 75273114d62..be729d360e3 100644
--- a/llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp
@@ -260,6 +260,11 @@ void SystemZAsmPrinter::EmitInstruction(const MachineInstr *MI) {
         .addImm(15).addReg(SystemZ::R0D);
     break;
 
+  // Emit nothing here but a comment if we can.
+  case SystemZ::MemBarrier:
+    OutStreamer->emitRawComment("MEMBARRIER");
+    return;
+
   default:
     Lower.lower(MI, LoweredMI);
     break;