ARM: ISB cannot be passed the same options as DMB

ISB should only accepts full system sync, other options are reserved

llvm-svn: 183656

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
index fd665b4c21b..7fef795b23e 100644
--- a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+++ b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
@@ -674,6 +674,12 @@ void ARMInstPrinter::printMemBOption(const MCInst *MI, unsigned OpNum,
   O << ARM_MB::MemBOptToString(val);
 }
 
+void ARMInstPrinter::printInstSyncBOption(const MCInst *MI, unsigned OpNum,
+                                          raw_ostream &O) {
+  unsigned val = MI->getOperand(OpNum).getImm();
+  O << ARM_ISB::InstSyncBOptToString(val);
+}
+
 void ARMInstPrinter::printShiftImmOperand(const MCInst *MI, unsigned OpNum,
                                           raw_ostream &O) {
   unsigned ShiftOp = MI->getOperand(OpNum).getImm();