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Re: [PATCH]: Clear SSA_NAME_DEF_STMT on released SSA names

From: "Daniel Berlin" <dberlin at dberlin dot org>
To: law at redhat dot com
Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>, "Diego Novillo" <dnovillo at redhat dot com>
Date: Fri, 29 Sep 2006 22:45:53 -0400
Subject: Re: [PATCH]: Clear SSA_NAME_DEF_STMT on released SSA names
References: <4aca3dc20609291924s5856be18pda97fbe2f7ebe129@mail.gmail.com> <1159584246.2746.18.camel@fuel98.slc.redhat.com>

Bad idea unless something has changed.

SSA_NAME_DEF_STMT uses the tree chain field.  WHen we release an
SSA_NAME we use the chain field to link together all the free SSA_NAME
nodes.


Interesting. It survived bootstrap and regtesting here.
It must be reset later on again to chain them together.

jeff

Follow-Ups:
- Re: [PATCH]: Clear SSA_NAME_DEF_STMT on released SSA names
  - From: Daniel Berlin

References:
- [PATCH]: Clear SSA_NAME_DEF_STMT on released SSA names
  - From: Daniel Berlin
- Re: [PATCH]: Clear SSA_NAME_DEF_STMT on released SSA names
  - From: Jeffrey Law

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