[Bug target/31110] Problem while compiling gcc for mn10300-elf

[law at redhat dot com]

------- Comment #4 from law at redhat dot com  2008-03-25 21:54 -------
Subject: Re:  Problem while compiling gcc for mn10300-elf

mstein dot lists at googlemail dot com wrote:
> ------- Comment #3 from mstein dot lists at googlemail dot com  2008-03-20 13:55 -------
> patch:
> http://gcc.gnu.org/ml/gcc-patches/2008-01/msg01458.html
> 
> 
I haven't worked with the mn103 in a long time, a little refreshment 
would go a long way.

What does CLASS, MODE and IN look like?  And more interesting, what are 
all the forms IN, CLASS & MODE might be at this point?  Given the way 
the code is written, we must have thought one particular case required a 
secondary register that was a DATA_REG, presumably because an 
ADDRESS_REG wouldn't work.  Your change would likely break that case.


It's also unclear to me that this really solves the problem as opposed 
to just papering over the problem.

Aren't DATA_OR_EXTENDED_REGS and DATA_REGS subclasses of GENERAL_REGS 
and thus ought to work just fine given the constraints of reload_insi's 
clobber operand? "=&r"

I think this needs further discusssion

Jeff


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31110