[LLVMdev] Is there any way to modify basic block like adding junk code or ...

[Chris Lattner]

On Mon, 20 Sep 2004, Zhang Qiuyu wrote:

> Is there any way to modify code like adding junk code or mess up the
> order of a bunch of codes(in same basic block) which is no dependency? I
> saw some options like -dce -deadargelim for 'opt' , but what I want is
> to reverse to do it. I mean adding some dead code or junk code. Actually
> what I want is to implement a ploymorphic engine. Coud I do those by
> using llvm?

Sure, modifying and adding to the LLVM IR is easy.  Please read the
programmers manual for more info:

http://llvm.org/docs/ProgrammersManual.html

For example, "Creating and inserting new Instructions" might be useful:
http://llvm.org/docs/ProgrammersManual.html#schanges_creating

-Chris

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