[MCAsmParser] Move AltMacroMode tracking out of MCAsmLexer

The Lexer doesn't use this state itself. It is only set and used by AsmParser so it seems like it should just be part of AsmParser.

Differential Revision: https://reviews.llvm.org/D52515

llvm-svn: 343027

llvm/include/llvm/MC/MCParser/MCAsmLexer.h

@@ -52,7 +52,6 @@ protected: // Can only create subclasses.
   bool IsAtStartOfStatement = true;
   AsmCommentConsumer *CommentConsumer = nullptr;
 
-  bool AltMacroMode;
   MCAsmLexer();
 
   virtual AsmToken LexToken() = 0;
@@ -67,14 +66,6 @@ public:
   MCAsmLexer &operator=(const MCAsmLexer &) = delete;
   virtual ~MCAsmLexer();
 
-  bool IsaAltMacroMode() {
-    return AltMacroMode;
-  }
-
-  void SetAltMacroMode(bool AltMacroSet) {
-    AltMacroMode = AltMacroSet;
-  }
-
   /// Consume the next token from the input stream and return it.
   ///
   /// The lexer will continuously return the end-of-file token once the end of

llvm/lib/MC/MCParser/AsmParser.cpp

@@ -180,6 +180,9 @@ private:
   /// Did we already inform the user about inconsistent MD5 usage?
   bool ReportedInconsistentMD5 = false;
 
+  // Is alt macro mode enabled.
+  bool AltMacroMode = false;
+
 public:
   AsmParser(SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
             const MCAsmInfo &MAI, unsigned CB);
@@ -2443,14 +2446,13 @@ bool AsmParser::expandMacro(raw_svector_ostream &OS, StringRef Body,
             // Here, we identify the integer token which is the result of the
             // absolute expression evaluation and replace it with its string
             // representation.
-            if (Lexer.IsaAltMacroMode() && Token.getString().front() == '%' &&
+            if (AltMacroMode && Token.getString().front() == '%' &&
                 Token.is(AsmToken::Integer))
               // Emit an integer value to the buffer.
               OS << Token.getIntVal();
             // Only Token that was validated as a string and begins with '<'
             // is considered altMacroString!!!
-            else if (Lexer.IsaAltMacroMode() &&
-                     Token.getString().front() == '<' &&
+            else if (AltMacroMode && Token.getString().front() == '<' &&
                      Token.is(AsmToken::String)) {
               OS << altMacroString(Token.getStringContents());
             }
@@ -2634,7 +2636,7 @@ bool AsmParser::parseMacroArguments(const MCAsmMacro *M,
 
     SMLoc StrLoc = Lexer.getLoc();
     SMLoc EndLoc;
-    if (Lexer.IsaAltMacroMode() && Lexer.is(AsmToken::Percent)) {
+    if (AltMacroMode && Lexer.is(AsmToken::Percent)) {
       const MCExpr *AbsoluteExp;
       int64_t Value;
       /// Eat '%'
@@ -2649,7 +2651,7 @@ bool AsmParser::parseMacroArguments(const MCAsmMacro *M,
       AsmToken newToken(AsmToken::Integer,
                         StringRef(StrChar, EndChar - StrChar), Value);
       FA.Value.push_back(newToken);
-    } else if (Lexer.IsaAltMacroMode() && Lexer.is(AsmToken::Less) &&
+    } else if (AltMacroMode && Lexer.is(AsmToken::Less) &&
                isAltmacroString(StrLoc, EndLoc)) {
       const char *StrChar = StrLoc.getPointer();
       const char *EndChar = EndLoc.getPointer();
@@ -4186,10 +4188,7 @@ bool AsmParser::parseDirectiveCFIUndefined(SMLoc DirectiveLoc) {
 bool AsmParser::parseDirectiveAltmacro(StringRef Directive) {
   if (getLexer().isNot(AsmToken::EndOfStatement))
     return TokError("unexpected token in '" + Directive + "' directive");
-  if (Directive == ".altmacro")
-    getLexer().SetAltMacroMode(true);
-  else
-    getLexer().SetAltMacroMode(false);
+  AltMacroMode = (Directive == ".altmacro");
   return false;
 }
 

llvm/lib/MC/MCParser/MCAsmLexer.cpp

@@ -15,7 +15,7 @@
 
 using namespace llvm;
 
-MCAsmLexer::MCAsmLexer() : AltMacroMode(false) {
+MCAsmLexer::MCAsmLexer() {
   CurTok.emplace_back(AsmToken::Space, StringRef());
 }