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From: "hjl at lucon dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/34001] Incorrect x86 fastcall behavior
Date: Tue, 27 Nov 2007 02:36:00 -0000	[thread overview]
Message-ID: <20071127023601.5695.qmail@sourceware.org> (raw)
In-Reply-To: <bug-34001-15308@http.gcc.gnu.org/bugzilla/>



------- Comment #7 from hjl at lucon dot org  2007-11-27 02:36 -------
(In reply to comment #6)
> We have changed fastcall behavior from gcc 3.4 to 4.1. For
> 
> ---
> #define FASTCALL __attribute((fastcall))
> 
> double FASTCALL  f_dii( double p1d, int p2i, int p3i ){  return p1d +
> (double)p2
> i + (double)p3i;  }
> 
> int    test_x;
> int    test_y;
> double test_d1;
> 
> void caller( void ){
>   f_dii( test_d1, test_x, test_y );
> }
> ---
> 
> Gcc 3.4 doesn't pass the first 2 integral parameters in ecx/edx and gcc
> 4.1 does.
> 

This patch

http://gcc.gnu.org/ml/gcc-patches/2005-01/msg00541.html

fixes this fast call bug by changing the abi.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34001


  parent reply	other threads:[~2007-11-27  2:36 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-05 23:40 [Bug c/34001] New: Incorrect __attribute__ " zia at aracnet dot com
2007-11-05 23:58 ` [Bug target/34001] " pinskia at gcc dot gnu dot org
2007-11-08 17:12 ` hjl at lucon dot org
2007-11-09 16:55 ` hjl at lucon dot org
2007-11-09 17:34 ` hjl at lucon dot org
2007-11-12  3:27 ` [Bug target/34001] Incorrect x86 " hjl at lucon dot org
2007-11-16  4:52 ` hjl at lucon dot org
2007-11-26 23:19 ` hjl at lucon dot org
2007-11-27  2:36 ` hjl at lucon dot org [this message]
2007-11-28  1:20 ` hjl at gcc dot gnu dot org
2007-11-28  1:25 ` hjl at lucon dot org

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