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2012 Oct 31
0
[LLVMdev] problem trying to write an LLVM register-allocation pass
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2012 Oct 31
2
[LLVMdev] problem trying to write an LLVM register-allocation pass
I'm trying to write a MachineFunctionPass to do register allocation. I
have code that worked with an old version of LLVM. It does not work
with llvm-3.1. (or various other versions that I've tried).
The first problem is that including this line:
AU.addRequiredID(TwoAddressInstructionPassID);
in method getAnalysisUsage causes a runtime error:
Unable to schedule 'Eliminate PHI