[avr-gcc-list] RE: [Bug target/31786] error: unable to find a register to spill in class 'BASE_POINTER_REGS'

[Eric Weddington]

> -----Original Message-----
> From: Ralf Corsepius [mailto:address@hidden 
> Sent: Thursday, May 03, 2007 9:58 AM
> To: Eric Weddington
> Cc: address@hidden; 'Joel Sherrill'; address@hidden
> Subject: RE: [Bug target/31786] error: unable to find a 
> register to spill in class 'BASE_POINTER_REGS'
> 
> 
> Seems to me as if -O2 is not reliable on the avr ...

There are a number of issues, mainly with going to 4.x. There has been a lot
of effort recently in fixing bugs, but still there are more to fix.

I keep an updated list of all bugs affecting the AVR here:
<http://www.nongnu.org/avr-libc/bugs.html>

Also, if you find any more bugs in the AVR port, please feel free to put my
email address in the CC list.
 
> 
> Well, newlib implements a lot of what RTEMS uses, e.g. printf, string
> ops and other functions. I.e. "OS in newlib" has not been 
> 100% correct,
> but "RTEMS and newlib are pretty much woven" would have 
> matched better 

> True, it's a while since I looked into it ... the version I 
> have around
> (1.0.4) contains GPL'ed code ;)

I would strongly suggest that you and Joel take a look at avr-libc again: it
has printf, many string functions, etc.

Eric