llvm dev - Mar 2018 - Change args count in CallInstr

Hello,

I have a CallInstr for "functionA". I renamed it to
"functionB" but I want
to decrease number of arguments as functionA accepts e.g two and functionB
just one.

So far, I dont find any function to just replace args / set args size. Any
idea?

Maybe other solution...

Is there any way to create a new CallInstr for functionB, copy things from
CallInstr of functionB a copy N - 1 args from old one to new one?

Thanks
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