Add multi-source/dest VMOV to the integrated ARM 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 1293 matching lines @@
 
   if (isMultiSource()) {
     emitSingleDestMultiSource(Func);
     return;
   }
 
   emitSingleDestSingleSource(Func);
 }
 
 void InstARM32Mov::emitIAS(const Cfg *Func) const {
+  // TODO(kschimpf) Flatten this to a switch statement of dest type. That is,
+  // combine code of emitIASSingleDestSingleSource, emitIASCoreVFPMove,
+  // emitIASScalarVFPMove, emitDoubleToI64Move, and emitI64ToDoubleMove.
+  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   assert(!(isMultiDest() && isMultiSource()) && "Invalid vmov type.");
-  auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
-  if (!(isMultiDest() || isMultiSource()))
-    // Must be single source/dest.
+  if (isMultiDest())
+    Asm->vmovrrd(getDest(), getDestHi(), getSrc(0), getPredicate());
+  else if (isMultiSource())
+    Asm->vmovdrr(getDest(), getSrc(0), getSrc(1), getPredicate());
+  else
     emitIASSingleDestSingleSource(Func);
-  else
-    Asm->setNeedsTextFixup();
   if (Asm->needsTextFixup())
     emitUsingTextFixup(Func);
 }
 
 void InstARM32Mov::dump(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   assert(getSrcSize() == 1 || getSrcSize() == 2);
   Ostream &Str = Func->getContext()->getStrDump();
   Variable *Dest = getDest();
@@ skipping 1091 matching lines @@
 
 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 ARM32
 } // end of namespace Ice