llvm dev - Aug 2018 - OpaqueType:: get()

I have code that uses OpaqueType::get(), it was used to be in
llvm/IR/DerivedType.h ,  but it is removed now. What should I use for it
replacement.

Also, it is using #include <llvm/Bytecode/WriteBytecodePass.h> , but I do
not found any WriteBytecodePass.h in my source code. Please tell me, what
should I use in replacement of these.

Thanks& Regards,
Ratnesh Tiwari
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On Fri, 24 Aug 2018 at 04:49, Ratnesh Tiwari via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> I have code that uses OpaqueType::get(), it was used to be in
llvm/IR/DerivedType.h ,  but it is removed now. What should I use for it
replacement.
Oh, that must be some pretty old code! I think OpaqueType was removed
in the type system rewrite around LLVM 3.0. Chris wrote a blog about
the changes at the time:
http://blog.llvm.org/2011/11/llvm-30-type-system-rewrite.html.

The replacement for an opaque type is a StructType that hasn't had its
body filled in yet. I.e. what you get back from StructType::create.
> Also, it is using #include <llvm/Bytecode/WriteBytecodePass.h> , but
I do not found any WriteBytecodePass.h in my source code. Please tell me, what
should I use in replacement of these.
Bytecode went away even earlier in LLVM's history. The replacement is
called bitcode. The header you'll need is
llvm/Bitcode/BitcodeWriter.h, and it's not a pass any more. Possibly
the simplest example of its use would be tools/llvm-as/llvm-as.cpp.

Cheers.

Tim.

>> Also, it is using #include <llvm/Bytecode/WriteBytecodePass.h> ,
but I do not found any WriteBytecodePass.h in my source code. Please tell me,
what should I use in replacement of these.
>
> Bytecode went away even earlier in LLVM's history. The replacement is
> called bitcode.
I believe this change was introduced in LLVM 2.0 that was released ...
more than 11 years ago ;)

-- 
With best regards, Anton Korobeynikov
Department of Statistical Modelling, Saint Petersburg State University

Thanks, for suggesting me of the replacement of OpaqueType, but I am little
confused how to use StructType, I mean I am following the code of this
project :
https://llvm.org/svn/llvm-project/java/trunk/lib/Compiler/Resolver.cpp
Here it is used OpaqueType::get() , So according to you I have to first
create StrructType like "StructType::create(LLVMContext &
Context)" and
then use StructType::get() ? Please suggest me how to use of StructType in
here? Thanks in advance.

On Fri, Aug 24, 2018 at 9:56 PM Tim Northover <t.p.northover at gmail.com>
wrote:
> On Fri, 24 Aug 2018 at 04:49, Ratnesh Tiwari via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > I have code that uses OpaqueType::get(), it was used to be in
> llvm/IR/DerivedType.h ,  but it is removed now. What should I use for it
> replacement.
>
> Oh, that must be some pretty old code! I think OpaqueType was removed
> in the type system rewrite around LLVM 3.0. Chris wrote a blog about
> the changes at the time:
> http://blog.llvm.org/2011/11/llvm-30-type-system-rewrite.html.
>
> The replacement for an opaque type is a StructType that hasn't had its
> body filled in yet. I.e. what you get back from StructType::create.
>
> > Also, it is using #include <llvm/Bytecode/WriteBytecodePass.h> ,
but I
> do not found any WriteBytecodePass.h in my source code. Please tell me,
> what should I use in replacement of these.
>
> Bytecode went away even earlier in LLVM's history. The replacement is
> called bitcode. The header you'll need is
> llvm/Bitcode/BitcodeWriter.h, and it's not a pass any more. Possibly
> the simplest example of its use would be tools/llvm-as/llvm-as.cpp.
>
> Cheers.
>
> Tim.
>
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