[llvm-py] Replace instructions

[Sebastian Muniz]

Hello guys,

I have a question and may be you can help me. Is there a way to
replace an existing instruction in a function with another instruction
that takes care of the use-defs?

I found a couple of functions called ReplaceInstWithInst() and
ReplaceInstWithValue() in llvm/Transforms/Utils/BasicBlockUtils.h that
might do the trick. Here is the link to the programmers manual page:

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

Any ideas?

Thanks in advance.

~cheers, topo

[Mahadevan R]

Hi topo,

>   I have a question and may be you can help me. Is there a way to
> replace an existing instruction in a function with another instruction
> that takes care of the use-defs?

Use the C++ API: Value::replaceAllUsesWith(Value * replacement).
Instruction is-a Value.

For llvm-py you'll have to wrap it first ;-)

Regards,
-MD.