[LLVMdev] can't run the Hello Pass: either not registered or registered multiple times, what is the problem?

John Criswell criswell at uiuc.edu
Wed Jun 2 14:32:30 PDT 2010

Anton Korobeynikov wrote:
> Hello
>> opt -load Release/lib/Hello.dll -hello < ./hello.bc > /dev/null
>> opt.exe: Unknown command line argument '-hello'.  Try:
>> Could somebody give me a hint?
> Loadable modules (e.g. passes) are not supported on windows. And will
> probably never be.

As an alternative, you can either:

1) Modify the opt program to statically link in the library implementing 
your pass.
2) Create a new program (based on opt) that runs your pass on a 
specified bitcode file.

SAFECode has done the latter; you can see what we did by checkout out 
the SAFECode source code 
(http://safecode.cs.illinois.edu/downloads.html) and looking at 

-- John T.

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