Bob Rossi wrote: > Hi Ian, > > Basically, I want to use GCC with C,C++. I want to walk a tree that GCC > creates for the translation units. I would like to know if for these two > languages if I should use a language dependent tree, the generic tree or > the gimple tree. In general, I would like to use the tree that most closely > resembles the source language, and that is documented best. > > For starters, can you recommend which tree structure I should use in > GCC? If so, would it be to much to ask to point me to the object in the > source code that represents the tree after the tree has been populated? > > If I should be using gimple, I found this paper. > ftp://gcc.gnu.org/pub/gcc/summit/2003/GENERIC%20and%20GIMPLE.pdf > Is there any other good documentation on this?
I cant help much as i have only been fumbling around in the GCC source for a short time now and still have no idea about a lot of stuff. However I did want to also look at the full tree for the C++ front end. I did this from the parser.c: cp_parser_translation_unit() function just after the call to: finish_translation_unit() and I was looking at the tree defined globally elsewhere in the variable: global_namespace This is probably not the best spot to look at the tree but it seemed to work for me. However i have recently been changing the way i do things as working with the full tree was VERY in-efficient for my task. I now look at the trees for individual functions as they pass through: gimplify.c: gimplify_function_tree() It sped my code up by over 100x. I guess it really depends on what you wish to do and I am sure someone else on this list can help a lot more than i can. Brendon.
