> I try to change the front-end tree structure of a c/c++ program as a > side effect of execution of a pragma. The operations that are involved > is to walk through in a tree (i.e "C" block), insertion of a tree > (i.e. statement, block, declaration) in the abstract syntax tree and > deletion of a tree (i.e. statement, block, declaration).
You can access the function's tree through it's call-graph node. (the call-graph node has a pointer to the function's tree declaration), than use block_stmt_iterator (bsi) to iterate through the function's basic blocks; each statement in the basic block can be recursively traversed via walk_tree () function. (see cgraph_create_edges () in cgraphunit.c). build1 () function (tree.h) can be used to construct a new tree node. Hope it helps, Revital
