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Re: [tree-ssa] RFC: Dropping INDIRECT_REF variables

From: Daniel Berlin <dberlin at dberlin dot org>
To: Andrew MacLeod <amacleod at redhat dot com>
Cc: Diego Novillo <dnovillo at redhat dot com>,gcc mailing list <gcc at gcc dot gnu dot org>
Date: Wed, 14 May 2003 12:24:48 -0400
Subject: Re: [tree-ssa] RFC: Dropping INDIRECT_REF variables

All you were doing were taking unaliased dereferences, and replacing them with a variable. It was basically a simple expression replacement based on a single simple case... a dereference of a memory location that wasn't alasied with anything.
I find it hard to beleive that this isn't going to be caught by some
other optimization that handles expressions and looks at loads and
stores.

This is the job of SSAPRE load PRE. As I said, as long as i have the PTA/alias info, i can do the right thing.

Andrew

References:
- Re: [tree-ssa] RFC: Dropping INDIRECT_REF variables
  - From: Andrew MacLeod

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