[Bug target/50566] New: [avr]: Add support for better logging similar to -mdeb

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50566

             Bug #: 50566
           Summary: [avr]: Add support for better logging similar to -mdeb
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: target
        AssignedTo: g...@gcc.gnu.org
        ReportedBy: g...@gcc.gnu.org
                CC: eric.wedding...@atmel.com
            Target: avr


-mdeb lets avr-gcc print log information as a file is being compiled but it's
hard to depict from the information

- what function is just being compiled
- what pass gcc is in
- ...

Forover, it would be nice to have a printf-like function to print formatted
output together with trees, RTXes, register classes, rtx codes, etc.