Initial checkin of X86 backend.

We can instruction select exactly one instruction 'ret void'.  Wow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4284 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/Printer.cpp

@@ -0,0 +1,21 @@
+//===-- X86/Printer.cpp - Convert X86 code to human readable rep. ---------===//
+//
+// This file contains a printer that converts from our internal representation
+// of LLVM code to a nice human readable form that is suitable for debuggging.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86.h"
+#include <iostream>
+
+/// X86PrintCode - Print out the specified machine code function to the
+/// specified stream.  This function should work regardless of whether or not
+/// the function is in SSA form or not, although when in SSA form, we obviously
+/// don't care about being consumable by an assembler.
+///
+void X86PrintCode(const MFunction *MF, std::ostream &O) {
+  O << "x86 printing not implemented yet!\n";
+
+  // This should use the X86InstructionInfo::print method to print assembly for
+  // each instruction
+}