[LLVMdev] opt seems to ignore -load (Win32)

philipp.legrum at daimler.com philipp.legrum at daimler.com
Tue Feb 9 08:32:14 PST 2010

Hello Developers,

I was unsuccessfully trying to execute the hello world example described 
as a dynamic module loaded by opt.

Compiling the hello world example as a .dll file went pretty smoothly. An
  opt -load <file.dll> -hello source.bc -o result.bc
would then complain about -hello being an unrecognized option although 
hello was specified like this:
  RegisterPass<Hello> X("hello", "Hello World Pass")

Debugging into opt revealed that it recognized -load, however, would not 
make the option available.

The used environment is:
  WindowsXP 32Bit
  Visual Studio 2008
  CMake 2.8.0
No difference between LLVM 2.6 and the current svn version.

Question: Is dynamic module loading (dll files) supported on Windows at 
all? Or is it a better idea to use MinGW and try loading .so files, 

Thanks in advance for your support.

Philipp Legrum 

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