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Re: rename x86 pic register

From: Richard Henderson <rth at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Wed, 29 May 2002 14:32:09 -0700
Subject: Re: rename x86 pic register
References: <20020529140035.A14452@redhat.com> <20020529172637.M13411@devserv.devel.redhat.com>

On Wed, May 29, 2002 at 05:26:37PM -0400, Jakub Jelinek wrote:
> Shouldn't it apply to non-leaf functions which call only static/module local
> functions as well?

No.  The pic register may be alive across that call, which would make it
require a call-saved register.  At which point we might as well use ebx.

Note that functions with sibcalls are still considered leaf functions.

r~

References:
- rename x86 pic register
  - From: Richard Henderson
- Re: rename x86 pic register
  - From: Jakub Jelinek

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