From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeffrey A Law <law@cygnus.com>
To: mark@markmitchell.com
Cc: egcs@cygnus.com
Subject: Alias code
Date: Mon, 29 Jun 1998 03:22:00 -0000
Message-id: <12751.899115510@hurl.cygnus.com>
X-SW-Source: 1998-06/msg01044.html

We've got a little problem.

While the machine independent code is mostly free of gen_rtx (MEM)
calls, many of the target files, and some of the front-ends that we 
want to interoperate (but possibly do not control) with are not free
of such calls.

I think we need to handle these cases in a clean manner.  ie, we
have to initialize the alias set field when we allocate the MEM or
REG expression

Thoughts?

jeff

ps.  i just spent 3hrs tracking down a case where the compiler would
mis-compile a testcase, but not if you turned on -g or certain debug
dumps -- it was tracked down to a call to gen_rtx (MEM) in a target
config file.  I don't want to have to do this very often :(