mips-sgi-irix6.2 RTL check testsuite failures

[Kaveh R. Ghazi]

 > From: Clinton Popetz <cpopetz@cygnus.com>
 > 
 > > An mips-sgi-irix6.2 rtl-checking bootstrap is in progress, but it will
 > > take several hours.
 > > 
 > > 				-Clint
 > > 
 > > Thu Jul 13 09:22:48 CDT 2000  Clinton Popetz  <cpopetz@cygnus.com>
 > > 
 > > 	* mips.c (mips_expand_prologue): Don't calculate the last 
 > >         argument register unless we need it.  When we are calculating 
 > > 	  this, make sure FUNCTION_ARG is giving us a REG. 
 > 
 > 
 > The bootstrap completed ok...I await an ack.
 > 			-Clint


FYI, this patch to mips.c plus the other to mips.md bootstraped fine
and cured all RTL checking failures I saw on Irix6.2.

		Thanks!
		--Kaveh
--
Kaveh R. Ghazi			Engagement Manager / Project Services
ghazi@caip.rutgers.edu		Qwest Internet Solutions