llvm dev - Jun 2015 - [LLVMdev] Attaching metadata to / extending BasicBlock class

Hi,

Is there any way to attach some extended data to an instance of IR
BasicBlock class? I tried to extend the class by inheritance but had some
problems around destructor (?). Looks like the module is the owner of basic
blocks but it does not expect it to be extended.

The best idea I have is to attach IR Metadata to the first instructions of
the basic block. That is however quite restrictive as the construction an
instance of a metadata node is unnecessary complex for this case.

- PB
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> On 2015-Jun-30, at 13:39, Paweł Bylica <chfast at gmail.com> wrote:
> 
> Hi,
> 
> Is there any way to attach some extended data to an instance of IR
BasicBlock class? I tried to extend the class by inheritance but had some
problems around destructor (?). Looks like the module is the owner of basic
blocks but it does not expect it to be extended.
> 
> The best idea I have is to attach IR Metadata to the first instructions of
the basic block. That is however quite restrictive as the construction an
instance of a metadata node is unnecessary complex for this case.
For profiling data, we attach metadata to the terminator of the
BasicBlock.  I don't think there's another way.