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Re: RFC: kill ORIGINAL_REGNO
- From: Richard Henderson <rth at redhat dot com>
- To: Steven Bosscher <stevenb at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 29 Apr 2004 20:38:55 -0700
- Subject: Re: RFC: kill ORIGINAL_REGNO
- References: <6620348.1083061867030.SLOX.WebMail.wwwrun@extimap.suse.de> <4837279.1083073939743.SLOX.WebMail.wwwrun@extimap.suse.de>
On Tue, Apr 27, 2004 at 03:52:19PM +0200, Steven Bosscher wrote:
> In the only major ORIGINAL_REGNO user, regrename.c, we seem to be only
> interested in testing if ORIGINAL_REGNO (reg) == REGNO (reg), in which
> case it must have been a hard reg from an asm statement.
I think originally this was going to be used for var-tracking,
but that wound up inventing a new REG_ATTRS thing instead.
Patch is ok if it passes regression testing, and builds cc1 for
all targets touched.
r~