[LLVMdev] Tablegen question

[Villmow, Micah]

I have this intrinsic definition for llvm.

def int_opencl_math_fdistance_fast   : Intrinsic<[llvm_float_ty],

                           [llvm_anyfloat_ty, LLVMMatchType<0>]>;

 

 

Can someone explain  what LLVMMatchType does and how to specify it to
match the first argument and not the return value?

 

I've tried LLVMMatchType<1> but it fails in IntrinsicEmitter.cpp

 

Thanks,

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