Add various forms of LDREX/STREX to ARM integrated assembler.

src/IceInstARM32.cpp

 //===- subzero/src/IceInstARM32.cpp - ARM32 instruction implementation ----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 1156 matching lines @@
   Variable *Dest = getDest();
   Type DestTy = Dest->getType();
   assert(isScalarIntegerType(DestTy));
   const char *WidthString = getWidthString(DestTy);
   Str << "\t" << Opcode << WidthString << getPredicate() << "\t";
   getDest()->emit(Func);
   Str << ", ";
   getSrc(0)->emit(Func);
 }
 
+template <> void InstARM32Ldrex::emitIAS(const Cfg *Func) const {
+  assert(getSrcSize() == 1);
+  assert(getDest()->hasReg());
+  Variable *Dest = getDest();
+  assert(isScalarIntegerType(Dest->getType()));
+  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Asm->ldrex(Dest, getSrc(0), getPredicate(), Func->getTarget());
+  if (Asm->needsTextFixup())
+    emitUsingTextFixup(Func);
+}
+
 template <InstARM32::InstKindARM32 K>
 void InstARM32TwoAddrGPR<K>::emitIAS(const Cfg *Func) const {
   emitUsingTextFixup(Func);
 }
 
 template <InstARM32::InstKindARM32 K, bool Nws>
 void InstARM32UnaryopGPR<K, Nws>::emitIAS(const Cfg *Func) const {
   emitUsingTextFixup(Func);
 }
 
@@ skipping 373 matching lines @@
   Variable *Dest = getDest();
   Ostream &Str = Func->getContext()->getStrEmit();
   static constexpr char Opcode[] = "strex";
   const char *WidthString = getWidthString(Ty);
   Str << "\t" << Opcode << WidthString << getPredicate() << "\t";
   Dest->emit(Func);
   Str << ", ";
   emitSources(Func);
 }
 
+void InstARM32Strex::emitIAS(const Cfg *Func) const {
+  assert(getSrcSize() == 2);
+  const Operand *Src0 = getSrc(0);
+  assert(isScalarIntegerType(Src0->getType()));
+  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
+  Asm->strex(Dest, Src0, getSrc(1), getPredicate(), Func->getTarget());
+  if (Asm->needsTextFixup())
+    emitUsingTextFixup(Func);
+}
+
 void InstARM32Strex::dump(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   Ostream &Str = Func->getContext()->getStrDump();
   Variable *Dest = getDest();
   Dest->dump(Func);
   Str << " = ";
   Type Ty = getSrc(0)->getType();
   dumpOpcodePred(Str, "strex", Ty);
   Str << " ";
@@ skipping 440 matching lines @@
 template class InstARM32UnaryopFP<InstARM32::Vsqrt>;
 
 template class InstARM32FourAddrGPR<InstARM32::Mla>;
 template class InstARM32FourAddrGPR<InstARM32::Mls>;
 
 template class InstARM32CmpLike<InstARM32::Cmn>;
 template class InstARM32CmpLike<InstARM32::Cmp>;
 template class InstARM32CmpLike<InstARM32::Tst>;
 
 } // end of namespace Ice