[Bug tree-optimization/13761] [tree-ssa] component refs to the same struct should not alias

[dberlin at dberlin dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2005-04-23 18:41 -------
Subject: Re:  [tree-ssa] component refs to the
	same struct should not alias

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.




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13761