Added the skeleton for the implementation of the X86

target-specific AsmLexer, and added the appropriate
registration calls.

llvm-svn: 94275

llvm/lib/Target/X86/AsmParser/X86AsmLexer.cpp

@@ -0,0 +1,43 @@
+//===-- X86AsmLexer.cpp - Tokenize X86 assembly to AsmTokens --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Target/TargetAsmLexer.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "X86.h"
+
+using namespace llvm;
+
+namespace {
+  
+class X86AsmLexer : public TargetAsmLexer {
+  const MCAsmInfo &AsmInfo;
+protected:
+  AsmToken LexToken();
+public:
+  X86AsmLexer(const Target &T, const MCAsmInfo &MAI)
+    : TargetAsmLexer(T), AsmInfo(MAI) {
+  }
+};
+
+}
+
+AsmToken X86AsmLexer::LexToken() {
+  return AsmToken(AsmToken::Error, "", 0);
+}
+
+extern "C" void LLVMInitializeX86AsmLexer() {
+  RegisterAsmLexer<X86AsmLexer> X(TheX86_32Target);
+  RegisterAsmLexer<X86AsmLexer> Y(TheX86_64Target);
+}
+
+//#define REGISTERS_ONLY
+//#include "../X86GenAsmMatcher.inc"
+//#undef REGISTERS_ONLY

llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp

@@ -488,10 +488,13 @@ bool X86ATTAsmParser::ParseDirectiveWord(unsigned Size, SMLoc L) {
   return false;
 }
 
+extern "C" void LLVMInitializeX86AsmLexer();
+
 // Force static initialization.
 extern "C" void LLVMInitializeX86AsmParser() {
   RegisterAsmParser<X86ATTAsmParser> X(TheX86_32Target);
   RegisterAsmParser<X86ATTAsmParser> Y(TheX86_64Target);
+  LLVMInitializeX86AsmLexer();
 }
 
 #include "X86GenAsmMatcher.inc"