I have been using note_stores to modify selected assignments. Now when I try to move this code to gcc 4.4, I find that I get a warning because my walker function takes a non-const rtx - and if I make it take a const rtx, there will be a warning somewhere inside because there is a code path where a SET_SRC is modified. data is in use to point to a libiberty hash table.
So, am I supposed to ignore the warning? Roll my own copy of the original note_stores? Resurrect the original note_stores in rtlanal.c (by whatever name)?
