------- Comment #10 from dave at hiauly1 dot hia dot nrc dot ca  2007-07-07 
23:30 -------
Subject: Re:  [4.3 Regression] checking for suffix of object files...
configure: error: cannot compute suffix of f obje

> suggest a way that we could accommodate this?

Prior to reload being completed, I don't see that it matters whether
the argument pointer is fixed or not.  See df_get_entry_block_def_set().
After reload, I believe that we also need to mark the register in
entry_block_defs.

There may be refinements to this depending on whether the argument
pointer is used or not.  This might improve register allocation.
The argument pointer is always copied when it isn't fixed.  See
default_internal_arg_pointer().

For now, I would suggest being conservative.  For example, we aren't
fussy as to whether argument registers are actually used or not.

Dave


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32398

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