Refactor the ARM target parsing to use a def file with macros to expand

[oota-llvm.git] / lib / AsmParser / LLLexer.cpp

diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp
index a72f713c49000934e26e09658c5fd2ad0ff566fa..6d62584577abc033837256ee09d1709972d90c9b 100644 (file)
--- a/lib/AsmParser/LLLexer.cpp
+++ b/lib/AsmParser/LLLexer.cpp
@@ -252,7 +252,7 @@ void LLLexer::SkipLineComment() {
   }
 }
 
-/// LexAt - Lex all tokens that start with an @ character:
+/// Lex all tokens that start with an @ character.
 ///   GlobalVar   @\"[^\"]*\"
 ///   GlobalVar   @[-a-zA-Z$._][-a-zA-Z$._0-9]*
 ///   GlobalVarID @[0-9]+
@@ -375,7 +375,7 @@ lltok::Kind LLLexer::LexVar(lltok::Kind Var, lltok::Kind VarID) {
   return lltok::Error;
 }
 
-/// LexPercent - Lex all tokens that start with a % character:
+/// Lex all tokens that start with a % character.
 ///   LocalVar   ::= %\"[^\"]*\"
 ///   LocalVar   ::= %[-a-zA-Z$._][-a-zA-Z$._0-9]*
 ///   LocalVarID ::= %[0-9]+
@@ -383,7 +383,7 @@ lltok::Kind LLLexer::LexPercent() {
   return LexVar(lltok::LocalVar, lltok::LocalVarID);
 }
 
-/// LexQuote - Lex all tokens that start with a " character:
+/// Lex all tokens that start with a " character.
 ///   QuoteLabel        "[^"]+":
 ///   StringConstant    "[^"]*"
 lltok::Kind LLLexer::LexQuote() {
@@ -404,7 +404,7 @@ lltok::Kind LLLexer::LexQuote() {
   return kind;
 }
 
-/// LexExclaim:
+/// Lex all tokens that start with a ! character.
 ///    !foo
 ///    !
 lltok::Kind LLLexer::LexExclaim() {
@@ -425,7 +425,7 @@ lltok::Kind LLLexer::LexExclaim() {
   return lltok::exclaim;
 }
 
-/// LexHash - Lex all tokens that start with a # character:
+/// Lex all tokens that start with a # character.
 ///    AttrGrpID ::= #[0-9]+
 lltok::Kind LLLexer::LexHash() {
   // Handle AttrGrpID: #[0-9]+
@@ -443,7 +443,7 @@ lltok::Kind LLLexer::LexHash() {
   return lltok::Error;
 }
 
-/// LexIdentifier: Handle several related productions:
+/// Lex a label, integer type, keyword, or hexadecimal integer constant.
 ///    Label           [-a-zA-Z$._0-9]+:
 ///    IntegerType     i[0-9]+
 ///    Keyword         sdiv, float, ...
@@ -524,6 +524,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(undef);
   KEYWORD(null);
   KEYWORD(to);
+  KEYWORD(caller);
   KEYWORD(tail);
   KEYWORD(musttail);
   KEYWORD(target);
@@ -593,10 +594,12 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(attributes);
 
   KEYWORD(alwaysinline);
+  KEYWORD(argmemonly);
   KEYWORD(builtin);
   KEYWORD(byval);
   KEYWORD(inalloca);
   KEYWORD(cold);
+  KEYWORD(convergent);
   KEYWORD(dereferenceable);
   KEYWORD(dereferenceable_or_null);
   KEYWORD(inlinehint);
@@ -627,6 +630,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(ssp);
   KEYWORD(sspreq);
   KEYWORD(sspstrong);
+  KEYWORD(safestack);
   KEYWORD(sanitize_address);
   KEYWORD(sanitize_thread);
   KEYWORD(sanitize_memory);
@@ -687,6 +691,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   TYPEKEYWORD("label",     Type::getLabelTy(Context));
   TYPEKEYWORD("metadata",  Type::getMetadataTy(Context));
   TYPEKEYWORD("x86_mmx",   Type::getX86_MMXTy(Context));
+  TYPEKEYWORD("token",     Type::getTokenTy(Context));
 #undef TYPEKEYWORD
 
   // Keywords for instructions.
@@ -746,6 +751,12 @@ lltok::Kind LLLexer::LexIdentifier() {
   INSTKEYWORD(extractvalue,   ExtractValue);
   INSTKEYWORD(insertvalue,    InsertValue);
   INSTKEYWORD(landingpad,     LandingPad);
+  INSTKEYWORD(cleanupret,     CleanupRet);
+  INSTKEYWORD(catchret,       CatchRet);
+  INSTKEYWORD(catchpad,     CatchPad);
+  INSTKEYWORD(terminatepad, TerminatePad);
+  INSTKEYWORD(cleanuppad,   CleanupPad);
+  INSTKEYWORD(catchendpad,  CatchEndPad);
 #undef INSTKEYWORD
 
 #define DWKEYWORD(TYPE, TOKEN)                                                 \
@@ -799,9 +810,8 @@ lltok::Kind LLLexer::LexIdentifier() {
   return lltok::Error;
 }
 
-
-/// Lex0x: Handle productions that start with 0x, knowing that it matches and
-/// that this is not a label:
+/// Lex all tokens that start with a 0x prefix, knowing they match and are not
+/// labels.
 ///    HexFPConstant     0x[0-9A-Fa-f]+
 ///    HexFP80Constant   0xK[0-9A-Fa-f]+
 ///    HexFP128Constant  0xL[0-9A-Fa-f]+
@@ -859,7 +869,7 @@ lltok::Kind LLLexer::Lex0x() {
   }
 }
 
-/// LexIdentifier: Handle several related productions:
+/// Lex tokens for a label or a numeric constant, possibly starting with -.
 ///    Label             [-a-zA-Z$._0-9]+:
 ///    NInteger          -[0-9]+
 ///    FPConstant        [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
@@ -902,20 +912,7 @@ lltok::Kind LLLexer::LexDigitOrNegative() {
   if (CurPtr[0] != '.') {
     if (TokStart[0] == '0' && TokStart[1] == 'x')
       return Lex0x();
-    unsigned Len = CurPtr-TokStart;
-    uint32_t numBits = ((Len * 64) / 19) + 2;
-    APInt Tmp(numBits, StringRef(TokStart, Len), 10);
-    if (TokStart[0] == '-') {
-      uint32_t minBits = Tmp.getMinSignedBits();
-      if (minBits > 0 && minBits < numBits)
-        Tmp = Tmp.trunc(minBits);
-      APSIntVal = APSInt(Tmp, false);
-    } else {
-      uint32_t activeBits = Tmp.getActiveBits();
-      if (activeBits > 0 && activeBits < numBits)
-        Tmp = Tmp.trunc(activeBits);
-      APSIntVal = APSInt(Tmp, true);
-    }
+    APSIntVal = APSInt(StringRef(TokStart, CurPtr - TokStart));
     return lltok::APSInt;
   }
 
@@ -937,6 +934,7 @@ lltok::Kind LLLexer::LexDigitOrNegative() {
   return lltok::APFloat;
 }
 
+/// Lex a floating point constant starting with +.
 ///    FPConstant  [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
 lltok::Kind LLLexer::LexPositive() {
   // If the letter after the negative is a number, this is probably not a