[cfe-dev] Adding constant optimizations to Clang AST

[dmanatunga]

I am working on implementing a constant reassociation optimization to the AST
which will take an expression, such as:
x = 10 + a + 5
and reassociate it to some form of:
x = 10 + 5 + a.

Where would be the best place to apply this optimization? Should it be done
through a plugin using a visitor (can plugins edit the AST before final
compilation)? Or do I need to manually edit certain locations in the source
code.

-Dilan



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