[LLVMdev] writing a pass

[Nicholas Rizzolo]

Hi,

I'm having a problem with opt.  According to the "Writing an LLVM Pass"
tutorial, all I have to do to get the Hello pass to work is:

  cd ${LLVM_HOME}/llvm/lib/Transforms/Hello
  gmake
  cd $MYTEST
  opt -load ${OBJ_ROOT}/lib/Release/libhello.so -hello < something.bc > /dev/null

First (just as a friendly reminder), someone may want to go back and
double check a bunch of the command lines given in these tutorials.  It
looks like the opt tool, for instance, doesn't take its input from STDIN.
Also, I don't have a Debug subdirectory like the tutorial said I would - I
have Release instead.

That aside, although opt doesn't report any errors when loading
libhello.so, it also doesn't let me do anything with it:

  Unknown command line argument '-hello'.  Try: opt --help'

I tried loading the library and specifying '-help' and the '-hello'
transformation was not listed.  Any idea what I'm doing wrong?

Thanks,
 - Nick