Hi, this patch soves the missed-optimization reported in
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27663 to a certain degree. It works atop of the adjust_len insn attribute. With this patch it is the same trouble as with the 1-bit optimization stuff: Every single case of some algebra is handled by some insn. This can tune the code in some very specual situation, but there are thousands of other expressions out in the world... BTW: How can I generate a patch against the mentioned "adjust_len insn attribute"?. I think that would be more handy? Georg-Johann
avr-27663.patch
Description: Binary data
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