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From: Andrew Haley <aph@redhat.com>
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Date: Thu, 27 Nov 2003 09:21:00 -0000
To: Zack Weinberg <zack@codesourcery.com>
Cc: Chris Lattner <sabre@nondot.org>, Richard.Earnshaw@arm.com,
   Jim Wilson <wilson@specifixinc.com>, <gcc-patches@gcc.gnu.org>
Subject: Re: avoid unnecessary register saves for setjmp
In-Reply-To: <Pine.LNX.4.44.0311270301180.28662-100000@nondot.org>
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X-SW-Source: 2003-11/txt/msg02142.txt.bz2

Chris Lattner writes:
 > 
 > Zack Weinberg said:

 > > I'm going to take this opportunity to throw in a suggestion I've
 > > made before, which is that setjmp/longjmp should - always, not
 > > just when special variants are used - be converted by the front
 > > end into invocations of the exception-unwinding facility, which
 > > gives us tons more control.

True.  But the obvious problem with this is that it places a burden on
small applications (boot ROMs, say) that might only have a single
setjmp/longjmp.  These would be forced to include the unwinder and all
its baggage just for that.

Andrew.