Hello there, My name is Rodolfo Wottrich and I am currently beginning to work with GCC, so I can implement a new idea for my master's. Somewhere I saw that this e-mail address might be a suitable place to ask for help in regard to understanding GCC internals, so please disregard this message in case it doesn't fit here. During compilation of a C file, I need to be able to create a global function definition, with whatever a body I may have forged. I mean, the function is not going to be present in the source file and I got to create the respective tree structure so it can be lated gimplified and further compiled like any other function present in the source. I would only need to create that function in case some OpenMP directive is encountered, so my latest and unsuccessful try to do so was to create the tree structures for a FUNCTION_DECL and, say, a variable declared inside the scope of that function, after the parsing of a #pragma omp parallel in c_parser_omp_parallel() in file c-parser.c. I followed and tried to re-create the steps I found in the function create_omp_child_function(), in file omp-low.c, and http://gcc.gnu.org/onlinedocs/gccint/Function-Basics.html#Function-Basics. Summarizing: I tried to forge a function in parsing time, but couldn't. What am I doing wrong, and how can one do such a thing? Maybe the problem is that I create no calls to that new function, what do you think? Anyway, I'm compiling with no active optimizations, so I guess no optimization pass would remove my function just because it is not being used (and I use the macro TREE_USED to set that the function is not unused). I hope I was clear enough and everything I said made sense. =) Kind regards and thanks in advance, --- Rodolfo Guilherme Wottrich MSc. student in Computer Science Universidade Estadual de Campinas - Unicamp
