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From: jdl@purdue.UUCP (Jon Loeliger)
Newsgroups: net.lang.c
Subject: Re: icky C code
Message-ID: <688@mordred.purdue.UUCP>
Date: Wed, 30-Jul-86 12:56:59 EDT
Article-I.D.: mordred.688
Posted: Wed Jul 30 12:56:59 1986
Date-Received: Sat, 2-Aug-86 19:47:59 EDT
References: <2239@brl-smoke.ARPA> <2446@umcp-cs.UUCP> <3117@utcsri.UUCP>
Organization: Prude University
Lines: 26

In article <3117@utcsri.UUCP>, greg@utcsri.UUCP (Gregory Smith) writes:
> From a code efficiency
> standpoint, for example, a 68000 should return int's in D0 and all pointer
> types in A0, which would break the above. ( Somebody pointed out that a
> certain 68K compiler has an option to return both types in *both* regs ).
> Or am I wrong, and there is a non-unwritten ( i.e. official ) rule that
> says everything should return in the same reg whenever possible?


I am in the process of writing a 68000 backend and just
this problem arose.  As of now, I resolved it by postponing
the critical decision, and left everything in D0 upon return.
------------------------------------------------------------------------------
Jon Loeliger		I *think* these are my opinions, let me ask my boss...
jdl@Purdue.ARPA					Dept Computer Science
jdl@Purdue.Edu					W. Lafayette, IN 47907
jdl@mordred.cs.purdue.edu			(317) 494-6180
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------------------------------------------------------------------------------
Jon Loeliger		I *think* these are my opinions, let me ask my boss...

jdl@Purdue.ARPA					Dept Computer Science
jdl@Purdue.Edu					W. Lafayette, IN 47907
jdl@mordred.cs.purdue.edu			(317) 494-6180
{ihnp4, decvax, ucbvax, pur-ee}!purdue!jdl