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Re: GCC ssa and alias info

From: Diego Novillo <dnovillo at google dot com>
To: Dasarath Weeratunge <dasarath at gmail dot com>
Cc: gcc <gcc at gcc dot gnu dot org>
Date: Tue, 12 Feb 2008 19:54:01 -0500
Subject: Re: GCC ssa and alias info
References: <610adb5f0802120951i63aa7e90mc0d5145cc9c20ca2@mail.gmail.com>

2008/2/12 Dasarath Weeratunge <dasarath@gmail.com <mailto:dasarath@gmail.com>>:

> Is it possible to dump the ssa representation and alias information
> generated by the compiler to a file?

Yes. If you are using 4.3+, alias analysis is a TODO item, so it's run if a pass requests it. If you use -fdump-tree-salias-vops, you'll get the very first dump of alias analysis (after the creation of structure vars). Otherwise, just use -fdump-tree-all-vops. You can grep which passes requested alias analysis by grepping for 'points-to' in the dumps.

If you are using pre 4.3, then -fdump-tree-alias-vops will work.

Diego.

References:
- GCC ssa and alias info
  - From: Dasarath Weeratunge

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