[Bug other/53375] [AVR] internal compiler error: in propagate_rtx, at fwprop.c:684

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53375

Georg-Johann Lay <gjl at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |avr
             Status|UNCONFIRMED                 |RESOLVED
          Component|c                           |other
         Resolution|                            |WORKSFORME
            Summary|[AVR] Internal compiler     |[AVR] internal compiler
                   |error when O1 or Os are     |error: in propagate_rtx, at
                   |active                      |fwprop.c:684

--- Comment #2 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-09-23 17:42:46 UTC ---
This bug look similar to PR46409 closed in 4.6.0 and I can compile the test
case with avr-gcc 4.6.2 without a problem.

Please notice that register allocation is a matter of the compiler; I don't
know what you try to achieve with the register asm declarations.  Just remove
them and clean up your code.

If you cannot switch to a supported version of the compiler (the oldest
supported release series is 4.6) then you can also compile with
-fno-forward-propagate.