[PATCH] D56556: [opaque pointer types] Update CallInst creation APIs to consistently accept a callee-type argument.

[whitequark via Phabricator via llvm-commits]

whitequark added inline comments.


================
Comment at: llvm/lib/IR/Core.cpp:3600
+                            LLVMValueRef *Args, unsigned NumArgs,
+                            const char *Name) {
+  FunctionType *FTy = unwrap<FunctionType>(Ty);
----------------
jyknight wrote:
> whitequark wrote:
> > whitequark wrote:
> > > Please add `NameLen` as this is the convention for all new C APIs.
> > Actually, now that I think about it, making sure that every `Name` argument has a `NameLen` accompanying would involve deprecating hundreds of functions and will probably never get done. Maybe it's OK to not have `NameLen` in IRBuilder bindings.
> > 
> > @deadalnix @echristo your opinion on this?
> Why do we have this convention now? I missed that discussion.
> 
> I actually think we should consistently NOT have a NameLen argument for these APIs creating internal IR names. There's no reason to ever need a zero byte in them -- the names are entirely optional anyways! And having inconsistent APIs is just annoying here.
>  
> I see that a couple new functions were _just_ added with a NameLen argument (LLVMBuildIntCast2, LLVMCreateBasicBlockInContext) -- and for both of those, I think that argument should be _removed_ from both, ASAP (especially before the branch, which is this week).
The discussion happened a while ago (maybe a year?). The point of convention is to make use of LLVM-C through FFI easier, since this is, to my best knowledge, the majority of use of LLVM-C.

> I actually think we should consistently NOT have a NameLen argument for these APIs creating internal IR names. There's no reason to ever need a zero byte in them -- the names are entirely optional anyways! And having inconsistent APIs is just annoying here.

I agree. Applying it to IR names was an oversight. Absolutely nothing is gained by IR names with embedded zeroes.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56556/new/

https://reviews.llvm.org/D56556