register reload problem in global register allocation

[Seongbae Park]

On 3/21/07, wonsubkim <wskim@optimizer.snu.ac.kr> wrote:
> I have some problems in global register allocation phase.
>
> I have described some simple architecture using machine description and target
> macro file. I use gnu GCC version 4.1.1.
>
> But, "can't combine" message is printed out in *.c.37.greg file in global
> register allocation phase. After i have traced the error message, i have
> found out the message reload_as_needed. But, I do not recognize the reason
> about this problem. I really can't know the relationship between register
> reload and my description.

What is your REAL problem ?
I doubt "can't combine" is the real immediate symptom,
as it's most likely just a dump of rld[].nocombine.
Show us at least your error message and the rtl
that you think is causing the problem.
-- 
#pragma ident "Seongbae Park, compiler, http://seongbae.blogspot.com"