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Re: about alias analysis
> i wonder whether there exists or not alias analysis for scalar variable,
> array variable, even pointers.
> thank you.
Yes. See alias.c for alias analysis on RTL. See also tree-ssa-alias.c
for alias analysis on trees. The latter is much more sophisticated.
The latter hasn't been in a release yet. You need to look at either
gcc-4.0 prerelease, or the mainline development sources.
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com