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Re: [patch] alias.c: Replace "return NULL_RTX" with "return 0".

From: Kazu Hirata <kazu at cs dot umass dot edu>
To: fjh at cs dot mu dot oz dot au
Cc: zack at codesourcery dot com, gcc-patches at gcc dot gnu dot org
Date: Thu, 12 Jun 2003 15:25:28 -0400 (EDT)
Subject: Re: [patch] alias.c: Replace "return NULL_RTX" with "return 0".
References: <20030612184112.GD8506@mars.cs.mu.oz.au><87of133zoz.fsf@egil.codesourcery.com><20030612185541.GE8506@mars.cs.mu.oz.au>

Hi Fergus,

> The use of 0 is not universal -- a `grep -w' for NULL returns nearly
> 4,000 hits.  Adding in all the occurrences of NULL_RTX would bring it
> to about 5,500.  Admittedly `grep -w' for 0 returns nearly 10 times as
> many hits, but very many of those will be for integers rather than pointers.

The numbers sound a bit daunting, but IMHO we should settle on one
way, whether that is 0 or NULL_RTX.  (I am willing to work on the
actual conversion process.)  Having many ways of saying one thing is
confusing.

Kazu Hirata

References:
- Re: [patch] alias.c: Replace "return NULL_RTX" with "return 0".
  - From: Fergus Henderson
- Re: [patch] alias.c: Replace "return NULL_RTX" with "return 0".
  - From: Zack Weinberg
- Re: [patch] alias.c: Replace "return NULL_RTX" with "return 0".
  - From: Fergus Henderson

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