Start incorporating the ARM integrated assembler.

src/IceAssembler.cpp

Index: src/IceAssembler.cpp
diff --git a/src/IceAssembler.cpp b/src/IceAssembler.cpp
index 9c77dce75ef6747631300d818058b309faa2e736..7eb8b61aa13258aa770d1517f30b37a812cbdfee 100644
--- a/src/IceAssembler.cpp
+++ b/src/IceAssembler.cpp
@@ -119,7 +119,7 @@ llvm::StringRef Assembler::getBufferView() const {
                          Buffer.size());
 }
 
-void Assembler::emitIASBytes(GlobalContext *Ctx) const {
+void Assembler::emitIASBytes() const {
   Ostream &Str = Ctx->getStrEmit();
   intptr_t EndPosition = Buffer.size();
   intptr_t CurPosition = 0;