[llvm] r221951 - IR: Make MDString::getName() private

[Duncan P. N. Exon Smith]

> On 2014-Nov-13, at 16:11, David Blaikie <dblaikie at gmail.com> wrote:
> 
> 
> 
> On Thu, Nov 13, 2014 at 4:08 PM, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote:
> 
> > On 2014-Nov-13, at 16:07, David Blaikie <dblaikie at gmail.com> wrote:
> >
> >
> >
> > On Thu, Nov 13, 2014 at 3:59 PM, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote:
> > Author: dexonsmith
> > Date: Thu Nov 13 17:59:16 2014
> > New Revision: 221951
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=221951&view=rev
> > Log:
> > IR: Make MDString::getName() private
> >
> > Hide the fact that `MDString`'s string is stored in `Value::Name` --
> > that's going to change soon.  Update the only in-tree client that was
> > using it instead of `Value::getString()`.
> >
> > Part of PR21532.
> >
> > Modified:
> >     llvm/trunk/include/llvm/IR/Metadata.h
> >     llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
> >
> > Modified: llvm/trunk/include/llvm/IR/Metadata.h
> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Metadata.h?rev=221951&r1=221950&r2=221951&view=diff
> > ==============================================================================
> > --- llvm/trunk/include/llvm/IR/Metadata.h (original)
> > +++ llvm/trunk/include/llvm/IR/Metadata.h Thu Nov 13 17:59:16 2014
> > @@ -61,6 +61,11 @@ class MDString : public Value {
> >    MDString(const MDString &) LLVM_DELETED_FUNCTION;
> >
> >    explicit MDString(LLVMContext &C);
> > +
> > +private:
> > +  /// \brief Shadow Value::getName() to prevent its use.
> > +  StringRef getName() const { return Value::getName(); }
> >
> > You could just delete it (LLVM_DELETED_FUNCTION) rather than giving it an implementation you don't want anyone to use. (compiler error on modern compilers, linker error otherwise if anyone tries to call it)
> >
> 
> It's still in use internally in the class for now.
> 
> Then the comment/commit message is a little misleading.

My bad, I should have said "external use".

> Might as well update all the internal uses too & then delete it.
> 
> Anyway, I'm sure it'll come out eventually.
> 

Yup.  For now, it's convenient as a redirect so I don't need to
update internal callers to `Value::getName()`.

Next commit deletes it.