79   StringRef Comment(CommentText);  in HandleComment()  local
80   if (Comment.empty())  in HandleComment()
84   unsigned Position = Comment.find_first_not_of(" \t");  in HandleComment()
85   if (Position >= Comment.size())  in HandleComment()
89   Comment = Comment.drop_front(Position);  in HandleComment()
90   if (Comment.consume_front("LLVM-MCA-END")) {  in HandleComment()
96   if (!Comment.consume_front("LLVM-MCA-BEGIN"))  in HandleComment()
100   Position = Comment.find_first_not_of(" \t");  in HandleComment()
101   if (Position < Comment.size())  in HandleComment()
102     Comment = Comment.drop_front(Position);  in HandleComment()
104   Regions.beginRegion(Comment, Loc);  in HandleComment()