Auto-sandboxing: add support for a few missing ARM opcodes

lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.cpp

 //===- ARMMCNaClExpander.cpp ------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the ARMMCNaClExpander class, the ARM specific
@@ skipping 338 matching lines @@
 
 void ARM::ARMMCNaClExpander::expandLoadStore(const MCInst &Inst,
                                              MCStreamer &Out,
                                              const MCSubtargetInfo &STI) {
   switch (Inst.getOpcode()) {
   case ARM::STMIA_UPD:
   case ARM::STMDA_UPD:
   case ARM::STMDB_UPD:
   case ARM::STMIB_UPD:
 
+  case ARM::VSTMDIA:
   case ARM::VSTMDIA_UPD:
   case ARM::VSTMDDB_UPD:
+  case ARM::VSTMSIA:
   case ARM::VSTMSIA_UPD:
   case ARM::VSTMSDB_UPD:
 
   case ARM::LDMIA_UPD:
   case ARM::LDMDA_UPD:
   case ARM::LDMDB_UPD:
   case ARM::LDMIB_UPD:
 
+  case ARM::VLDMDIA:
   case ARM::VLDMDIA_UPD:
   case ARM::VLDMDDB_UPD:
+  case ARM::VLDMSIA:
   case ARM::VLDMSIA_UPD:
   case ARM::VLDMSDB_UPD:
 
   case ARM::STMIA:
   case ARM::STMDA:
   case ARM::STMDB:
   case ARM::STMIB:
 
   case ARM::LDMIA:
   case ARM::LDMDA:
   case ARM::LDMDB:
   case ARM::LDMIB:
     return sandboxBaseDisp(Inst, *InstInfo, Inst.getOperand(0).getReg(), Out,
                            STI);
+  case ARM::DMB:
+    // DMB is mayLoad but has no memory operands and needs no sandboxing
+    return Out.EmitInstruction(Inst, STI);
   }
 
   int MemIdx = getMemIdx(Inst, *InstInfo);
   assert(MemIdx != -1);
 
   unsigned BaseReg = Inst.getOperand(MemIdx).getReg();
   bool PostIncrement = false;
 
   switch (Inst.getOpcode()) {
   case ARM::PLDi12:
@@ skipping 91 matching lines @@
                                         const MCSubtargetInfo &STI) {
   if (Guard)
     return false;
   Guard = true;
 
   doExpandInst(Inst, Out, STI);
 
   Guard = false;
   return true;
 }