llvm dev - Sep 2004 - [LLVMdev] Is there any way to modify basic block like adding junk code or ...

Hi ,

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?

Thanks.

Qiuyu
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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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