From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Meissner <meissner@cygnus.com>
To: law@cygnus.com
Cc: egcs@cygnus.com
Subject: Re: Alias code
Date: Mon, 29 Jun 1998 19:43:00 -0000
Message-id: <199806291940.PAA03093@tiktok.cygnus.com>
X-SW-Source: 1998-06/msg01068.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

We could always have the generic gen_rtx complain when it builds a MEM,
possibly under flag/ifdef control.

| 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 :(
|
|
|
|