>>>>> Matt Lee writes:
Date: Thu, 06 Sep 2007 15:02:52 -0400
From: David Edelsohn <[EMAIL PROTECTED]>
Matt> There is no point trying to minimize usage of volatile hard registers,
Matt> is there? They are precisely there to be used up as much as needed.
Matt> The function is a leaf procedure as well, so there are no other
Matt> considerations. Lastly, architectures like PPC do make use of more
Matt> registers (without -frename-registers), so there has to be something
Matt> in the PPC back-end that allows for the liberal use or in mine that
Matt> prevents such.
GCC RA mostly is tuned for IA-32 with very few registers.
The rs6000 port defines the movmemsi pattern calling
expand_block_move() which generates many intermediate pseudos.
David
