Implement global variable support

llvm-svn: 530
diff --git a/llvm/lib/AsmParser/Lexer.l b/llvm/lib/AsmParser/Lexer.l
index 9c3f947..6a650a3 100644
--- a/llvm/lib/AsmParser/Lexer.l
+++ b/llvm/lib/AsmParser/Lexer.l
@@ -122,6 +122,7 @@
 true            { return TRUE;  }
 false           { return FALSE; }
 declare         { return DECLARE; }
+global          { return GLOBAL; }
 implementation  { return IMPLEMENTATION; }
 \.\.\.          { return DOTDOTDOT; }
 string          { return STRING; }