On Wed, Apr 27, 2011 at 10:03 PM, Kai Tietz <ktiet...@googlemail.com> wrote: > Hello, > > this patch adds the ability to gimple-fold to operate for truth and/or > operations > on folded binary-and/or optimized truth trees - as done by fold-const. As > fold > converts trivial operations like (A && B) to (A & B) != 0, in most cases > further > folding of truth and/or trees wasn't done. > folding will be again detected. > > ChangeLog gcc/ > > 2011-04-27 Kai Tietz > > * gimple-fold.c (is_bit_ior_and): New helper function. > (fold_equal_and_or): New helper function for truth && > and || logic folding with treating binary optimization. > (maybe_fold_and_comparisons): Folding for and. > (maybe_fold_or_comparisons): Folding for or. > > ChangeLog gcc/testsuite/ > > 2011-04-27 Kai Tietz > > * gcc.dg/binop-tand1.c: New. > * gcc.dg/binop-tand2.c: New. > * gcc.dg/binop-tor1.c: New. > * gcc.dg/binop-tor2.c: New. > > Tested for x86_64-pc-linux-gnu and x86_64-w64-mingw32. Ok for apply?
No. This is certainly the wrong place to do tree combining. Richard. > Regards, > Kai >
