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Re: [Bug tree-optimization/13761] [tree-ssa] component refs to thesame struct should not alias
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: gcc-bugzilla at gcc dot gnu dot org
- Cc: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 23 Apr 2005 14:41:16 -0400
- Subject: Re: [Bug tree-optimization/13761] [tree-ssa] component refs to thesame struct should not alias
- References: <20040120070316.13761.dann@godzilla.ics.uci.edu> <20050423165213.26807.qmail@sourceware.org>
On Sat, 2005-04-23 at 16:52 +0000, steven at gcc dot gnu dot org wrote:
> ------- Additional Comments From steven at gcc dot gnu dot org 2005-04-23 16:52 -------
> Will the second part of the struct alias merge fix Dann's original
> test case? ("http://gcc.gnu.org/wiki/Structure Aliasing Part II")
>
Yes, but not immediately.
structure aliasing part ii is really two parts
First, is a new alias analyzer to handle structure fields, allow
inteprocedural analysis.
Second is improving our representation to handle base+offset
dereferences.
The second is a lot harder than one would think.