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Re: [tree-ssa][ GC, Virtual operands, and GCing between passes
- From: law at redhat dot com
- To: Andrew MacLeod <amacleod at redhat dot com>
- Cc: Geoff Keating <geoffk at geoffk dot org>, gcc mailing list <gcc at gcc dot gnu dot org>
- Date: Thu, 11 Dec 2003 12:30:33 -0700
- Subject: Re: [tree-ssa][ GC, Virtual operands, and GCing between passes
- Reply-to: law at redhat dot com
In message <1071016677.17667.2918.camel@p4>, Andrew MacLeod writes:
>
>I have array of pointers to trees.
>
>so
>
>tree **defs;
Really pointers to pointers to trees.
>I don't want what defs points to to be marked, since they are marked
>otherwise, I just need the defs vector itself collected:
Is that really the reason why you're going through these contortions? Does
it really buy us any measurable improvement?
I wouldn't expect a huge overhead to check the mark on an object that we
marked via some other chain of pointers. But hey, maybe I'm wrong :-)
jeff