[LLVMdev] Implementing llvm.atomic.cmp.swap.i32 on PowerPC

[Gary Benson]

Evan Cheng wrote:
> How about?
> 
> const TargetRegisterClass *RC = is64Bit ? &PPC:GPRCRegClass :  
> &PPC:G8RCRegClass;
> unsigned TmpReg = RegInfo.createVirtualRegister(RC);

I tried something like that yesterday:

  const TargetRegisterClass *RC =
    is64bit ? &PPC::GPRCRegClass : &PPC::G8RCRegClass;

but I kept getting this error no matter how I arranged it:

  error: conditional expression between distinct pointer types
  ‘llvm::PPC::GPRCClass*’ and ‘llvm::PPC::G8RCClass*’ lacks a cast

Any suggestions?

Cheers,
Gary

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