[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.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18463



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