Add an intel syntax MCInstPrinter implementation.  You can now
transcode from AT&T to intel syntax with "llvm-mc foo.s -output-asm-variant=1"



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82385 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index fad1dd1..329efe9 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -44,6 +44,10 @@
 static cl::opt<bool>
 ShowEncoding("show-encoding", cl::desc("Show instruction encodings"));
 
+static cl::opt<unsigned>
+OutputAsmVariant("output-asm-variant",
+                 cl::desc("Syntax variant to use for output printing"));
+
 enum OutputFileType {
   OFT_AssemblyFile,
   OFT_ObjectFile
@@ -252,9 +256,7 @@
   assert(MAI && "Unable to create target asm info!");
 
   if (FileType == OFT_AssemblyFile) {
-    // FIXME: Syntax Variant should be selectable somehow?
-    unsigned SyntaxVariant = 0;
-    IP.reset(TheTarget->createMCInstPrinter(SyntaxVariant, *MAI, *Out));
+    IP.reset(TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *Out));
     if (ShowEncoding)
       CE.reset(TheTarget->createCodeEmitter(*TM));
     Str.reset(createAsmStreamer(Ctx, *Out, *MAI, IP.get(), CE.get()));