[Bug tree-optimization/18463] [4.0 Regression] suboptimal use of fancy x86 addressing modes
rakdver at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Wed Sep 14 11:04:00 GMT 2005
------- Additional Comments From rakdver at gcc dot gnu dot org 2005-09-14 11:04 -------
Auch; that patch is actually a very bad idea. Pretending that complex
addressing modes are cheaper, when they are not, is just confusing. If there
are optimizers that indeed want to prefer complex addressing modes (like cse and
combine, I suppose), they should reflect that in the cost function they are
using, rather than forcing this missconception to every other optimizer.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18463
More information about the Gcc-bugs
mailing list