From: David Edelsohn <dje@watson.ibm.com>
To: dpitts@cozx.com
Cc: gcc@gcc.gnu.org
Subject: Re: Optimizer questions/issues with EBCDIC i370/s390 modes.
Date: Wed, 21 Aug 2002 19:03:00 -0000 [thread overview]
Message-ID: <200208220202.WAA27956@makai.watson.ibm.com> (raw)
In-Reply-To: <3D64287F.9070408@cozx.com>
>>>>> Dave Pitts writes:
Dave> The s390 mode doesn't have any longlong.h entries. I'll have to think
Dave> about this one.
Dave> Any idea who wrote these macros? They may have some insight.
Maybe Kenner or Marist or MKS or whoever did the original i370
port. I would not look to the original author for help.
Inline asm is very similar to the MD file patterns. I didn't mean
look at longlong.h for S/390, I meant look at s390.md and i370.md to see
how they handled the "MR" multiply instruction constraints.
Maybe it just needs "d" DATA_REGS constraints instead of "r"?
David
next prev parent reply other threads:[~2002-08-21 19:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-21 13:51 Dave Pitts
2002-08-21 14:12 ` David Edelsohn
2002-08-21 16:58 ` Dave Pitts
2002-08-21 19:03 ` David Edelsohn [this message]
2002-08-22 7:41 ` Kaveh R. Ghazi
2002-08-22 8:11 ` Dave Pitts
2002-08-22 8:15 ` Dave Pitts
2002-08-22 8:27 ` Kaveh R. Ghazi
2002-08-22 8:31 ` Dave Pitts
2002-08-22 8:48 Ulrich Weigand
2002-08-22 9:05 ` Dave Pitts
2002-08-22 10:21 Ulrich Weigand
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