[cfe-dev] Adding constant optimizations to Clang AST

[David Blaikie]

On Wed, Feb 6, 2013 at 2:18 PM, dmanatunga <manatunga at gmail.com> wrote:
> David Blaikie wrote
>> Why? LLVM optimizations will already do the right thing with this sort of
>> code.
>
> It is for an assignment that has been given to me. The Professor wants it
> done it for the Clang AST as opposed to the llvm IR.
>
> David Blaikie wrote
>> Are you trying to transform the user's code for them? (ie: do you
>> expect to modify the original source files or otherwise give this
>> source back to the user in some form) Or just produce better binaries?
>
> I am not modifying the original source file, or expect to give the source
> back to the user in some form. Just producing a better binary. I understand
> Clang tries to retain as much of the original code specification in the AST
> as possible, but I am basically ignoring that.

In short: the AST is not designed to be mutated so this may not be an
easy task. I don't really have any particularly useful pointers on how
you might achieve it.