hi, i have a some what similar confusion . i am trying to implement reference count algo for c. i need to knw how to manupulate pionters and which file i need to alter. for example if i have some statements like int *p,*q,a; p=&a; q=p;
and i need to change the pointer assignments so that i can increment the assignmnets for reference counting.... can anybody suggest me or guide me regarding this -- deepak On 11/14/07, Diego Novillo <[EMAIL PROTECTED]> wrote: > On Nov 13, 2007 1:38 PM, Fran Baena <[EMAIL PROTECTED]> wrote: > > > 1. Convert the function into GIMPLE form. Implemented in gimplify.c > > and c-simplify.c. > > 2. Find variable references in the code. Implemented in tree-dfa.c. > > 3. Build a control-flow graph (CFG). Implemented in tree-cfg.c. > > This implementation uses the same basic_block structure used by the > > RTL optimizers. This allows us to share most of the existing CFG code. > > 4. Rewrite the tree in SSA form. Implemented in tree-ssa.c. > > [....] > > > > But i still doubt about the process, in some ways: > > > > * Is the step #2 related to the alias analysis? > > Yes, though this documentation is fairly old. Finding referenced > variables is needed to determine what symbols are of interest. > > > That is hold with the > > def-use chains, and SMT / NMT structures. And, make any sense doing > > these step before the SSA variable versioning? If positive answer, > > why? > > Sorry, I don't understand this question. > > > Diego. >
