From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jim Wilson <wilson@cygnus.com>
To: Weiwen Liu <liu@hepvms.physics.yale.edu>
Cc: egcs@cygnus.com
Subject: Re: complex support on alpha 
Date: Thu, 02 Oct 1997 20:35:00 -0000
Message-id: <199710030335.UAA16564@cygnus.com>
References: <Pine.OSF.3.96.971002000152.22469A-100000@hepunix1.physics.yale.edu>
X-SW-Source: 1997-10/msg00142.html

	egcs on alpha-dec-osf4.0 fails to generate correct code for
	gcc.c-torture/execute/complex-5.c 
	in the testsuite, because gcc does not calculate correctly the number of
	registers needed for 'float __complex__'.  Instead of 2 registers, gcc
	says only one register is needed. 

It has been broken ever since the initial implementation.  There is a general
problem that __complex__ X fails if X is half the word size or smaller.
For instance, __complex__ short will fail on any 32 bit machine in the same
way that __complex__ float fails on the alpha.  It would be nice to see this
fixed.

Hopefully it can be fixed in a way that doesn't require changes to
every target.  If the alpha.h file requires fixes to make __complex__ float
work, then that implies that every tm.h file needs fixes to fix the general
__complex__ problem.

Jim