[LLVMdev] Register Machine Pass

[Justin Holewinski]

On Mon, 2014-07-14 at 08:31 -0700, Ryan Taylor wrote:
> Where is the documentation about registering a machine pass? I'm
> unable to find it.
> 
> 
> I have built a machine function pass similar to the one found in
> HexagonHardwareLoops.cpp. So I have generated a machine pass.cpp file,
> modified 'Target'.h and 'Target'TargetMachine.cpp (to add pass via
> addPass() in the addPreRegAlloc()). All this builds/compiles fine.
> 
> 
> When running llc the pass does not get executed.
> 
> 
> I seem to be missing some steps? Potentially registration of the
> machine pass?

That should be all you need to do.    Are you running in a debugger and
making sure your added addPass() call is actually being executed?
> 
> 
> Thanks.

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