Fix ARM integrated assembler to be able to compile spec2k examples.

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 671 matching lines @@
 
   if (isMultiSource()) {
     emitSingleDestMultiSource(Func);
     return;
   }
 
   emitSingleDestSingleSource(Func);
 }
 
 void InstARM32Mov::emitIAS(const Cfg *Func) const {
-  assert(getSrcSize() == 1);
   (void)Func;
   assert(!(isMultiDest() && isMultiSource()) && "Invalid vmov type.");
   ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   if (!(isMultiDest() || isMultiSource())) {
     // Must be single source/dest.
     emitIASSingleDestSingleSource(Func);
   }
   if (Asm->needsTextFixup())
     emitUsingTextFixup(Func);
 }
@@ skipping 42 matching lines @@
 void InstARM32Br::emitIAS(const Cfg *Func) const {
   ARM32::AssemblerARM32 *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   if (Label) {
     Asm->b(Asm->getOrCreateLocalLabel(Label->getNumber()), getPredicate());
   } else if (isUnconditionalBranch()) {
     Asm->b(Asm->getOrCreateCfgNodeLabel(getTargetFalse()->getIndex()),
            getPredicate());
   } else {
     Asm->b(Asm->getOrCreateCfgNodeLabel(getTargetTrue()->getIndex()),
            getPredicate());
-    Asm->b(Asm->getOrCreateCfgNodeLabel(getTargetFalse()->getIndex()),
-           CondARM32::AL);
+    if (const CfgNode *False = getTargetFalse())
+      Asm->b(Asm->getOrCreateCfgNodeLabel(False->getIndex()), CondARM32::AL);
   }
   if (Asm->needsTextFixup())
     emitUsingTextFixup(Func);
 }
 
 void InstARM32Br::dump(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   Ostream &Str = Func->getContext()->getStrDump();
   Str << "br ";
@@ skipping 682 matching lines @@
 template class InstARM32ThreeAddrGPR<InstARM32::Udiv>;
 
 template class InstARM32ThreeAddrFP<InstARM32::Vadd>;
 template class InstARM32ThreeAddrFP<InstARM32::Vdiv>;
 template class InstARM32ThreeAddrFP<InstARM32::Vmul>;
 template class InstARM32ThreeAddrFP<InstARM32::Vsub>;
 
 template class InstARM32TwoAddrGPR<InstARM32::Movt>;
 
 } // end of namespace Ice