I have written a simple pass. I have been successful to execute it. I want LLVM to execute it. I don’t know how to include a pass in llvm actual pass list, such it automatically invokes it just like GVNPre pass or some other pass. They have already been limked in llvm actual pass list.
Pls help.
Soumya_Prasad_Ukil wrote:
Pls help.
You didn't say what was actually running the passes. (llvm-gcc? clang? opt -some -passes?) What you probably want is to modify one of the lists in include/llvm/Support/StandardPasses.h.
Nick
Look I have written a PRE pass. opt is running that pass. I have included my pass name there in include/llvm/Support/StandardPasses.h file. To do that, I have got some error. Because it also requires the definition of the pass in some other file also. I observed how gvn pre pass is added to the pass list. I had followed the same way, but failed. Cna you kindly tell what needs to be done in this regard?
Soumya_Prasad_Ukil wrote:
Look I have written a PRE pass. opt is running that pass. I have
included my pass name there in include/llvm/Support/StandardPasses.h
file. To do that, I have got some error. Because it also requires the
definition of the pass in some other file also. I observed how gvn pre
pass is added to the pass list. I had followed the same way, but failed.
Cna you kindly tell what needs to be done in this regard?
What's the error you're getting?
There are two other files, include/llvm/LinkAllPasses.h and include/llvm/Transforms/Scalar.h which I think you would've already added your pass to if "opt -your-pre-pass" was working, but I'll mention them anyway.
Nick
My PRE pass is invoked using “opt -load -path-to-*.so-file” -my-pre-pass . In that case, I was not required to change include/llvm/LinkAllPasses.h and include/llvm/Transforms/Scalar.h --these two files. What needs to be done to simply run opt “-my-pre-pass”? In the previous, the required pass file is loaded first and then run.