Revert r114340 (improvements in Darwin function prologue/epilogue), as it broke

assumptions about stack layout. Specifically, LR must be saved next to FP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118026 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeEmitterGen.cpp

@@ -17,9 +17,15 @@
 #include "CodeGenTarget.h"
 #include "Record.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 using namespace llvm;
 
+static cl::opt<bool>
+MCEmitter("mc-code-emitter",
+          cl::desc("Generate CodeEmitter for use with the MC library."),
+          cl::init(false));
+
 void CodeEmitterGen::reverseBits(std::vector<Record*> &Insts) {
   for (std::vector<Record*>::iterator I = Insts.begin(), E = Insts.end();
        I != E; ++I) {