[cfe-dev] Clang AST

[caiwei]

Hi all,
I am new to the list and have been lurking a few days. I am interested 
in clang mainly as a possible tool for optimization.If there are any suggestions 
for small tasks (TODOs) that may give me  a good introduction to 
developing for clang, that would be nice.how can I modify the AST for my project?  
 
for example,After changing the AST code of Clang, the clang compiler optimize  x *2 to x << 2.
and how to use of the clang AST interface ?
 
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