Remove unused tokens from AsmParser.

[mewmew]

Summary

The tokens hash and backslash seems to be historical artefacts and are not used anywhere else in the LLVM code base. The LLVM tree (rev 227402) builds just fine with this patch applied and the test cases pass:

Testing Time: 1921.21s

Expected Passes    : 12203
Expected Failures  : 87
Unsupported Tests  : 73

Reference discussion: https://groups.google.com/forum/#!topic/llvm-dev/CcJZnpRXWdE

[silvas]

Thanks! Committed r227442

lib/AsmParser/LLLexer.cpp

lltok::Kind LLLexer::LexToken() {
   case '{': return lltok::lbrace;
   case '}': return lltok::rbrace;
   case '<': return lltok::less;
   case '>': return lltok::greater;
   case '(': return lltok::lparen;
   case ')': return lltok::rparen;
   case ',': return lltok::comma;
   case '*': return lltok::star;
-  case '\\': return lltok::backslash;
   }
 }
 
 void LLLexer::SkipLineComment() {
   while (1) {
     if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF)
       return;
   }

lib/AsmParser/LLToken.h

enum Kind {
     // Tokens with no info.
     dotdotdot,         // ...
     equal, comma,      // =  ,
     star,              // *
     lsquare, rsquare,  // [  ]
     lbrace, rbrace,    // {  }
     less, greater,     // <  >
     lparen, rparen,    // (  )
-    backslash,         // \    (not /)
     exclaim,           // !
-    hash,              // #
 
     kw_x,
     kw_true,    kw_false,
     kw_declare, kw_define,
     kw_global,  kw_constant,
 
     kw_private,
     kw_internal,