------- Comment #14 from dcb314 at hotmail dot com 2009-06-11 12:57 ------- (In reply to comment #13)
> We need someone to write the patch. Just that. I've got some spare time now, so I'd like to have a go. I can see that used_flag bitfield can be expanded from 1 bit to 2 bits. I can see that TREE_USED macro can be reworked to match. What concerns me is all the different places (currently 170) that the text pattern "TREE_USED.*=" occurs. I suspect a manual review of each of those 170 places would be prone to failure. Even without considering the various languages in sub directories, there are still 84 uses of "TREE_USED.*=" left. Considering solely the test program I originally posted, how would I go about finding which subset of the 84 places get visited by the test program ? gdb with 84 breakpoints doesn't sound feasible to me. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18624
