[Bug target/33049] [avr] bit extraction non optimal, inversing logic solves problem

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33049

--- Comment #18 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-06-21 
17:30:57 UTC ---
Author: gjl
Date: Tue Jun 21 17:30:54 2011
New Revision: 175269

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175269
Log:
    PR target/33049
    * config/avr/avr.md (extzv): New expander.
    (*extzv): New insn.
    (*extzv.qihi1, *extzv.qihi2): New insn-and-split.
    * config/avr/constraints.md (C04): New constraint.
    * doc/md.texi (Machine Constraints): Document it.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.md
    trunk/gcc/config/avr/constraints.md
    trunk/gcc/doc/md.texi