[Bug rtl-optimization/34791] [avr] optimisation of 8-bit logic sometimes fails

2011-10-09 Thread gjl at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34791 Georg-Johann Lay changed: What|Removed |Added Target|avr-*-* |avr Status|NEW

[Bug rtl-optimization/34791] [avr] optimisation of 8-bit logic sometimes fails

2011-07-09 Thread gjl at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34791 Georg-Johann Lay changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|

[Bug rtl-optimization/34791] [avr] optimisation of 8-bit logic sometimes fails

2010-02-16 Thread david at westcontrol dot com
--- Comment #1 from david at westcontrol dot com 2010-02-16 10:46 --- There are many other cases where 8-bit optimisation is missing - C's integer promotion gets in the way. This is particularly common when dealing with a compile-time constant - there is no way in C to say that "0x3f" i