Re: GNAT with LLVM -> Java Script

[duncan.sands@deepbluecap.com]

Hi,

> > That was the DragonEgg project, wasn't it? I got the impression it 
> 
> > foundered on some shortcoming of LLVM for non-C languages; not certain 
> 
> > which, but possibly the one regarding nested functions that Tristan has 
> 
> > overcome with ghdl.

no, there were no blocking technical problems.  For example I got nested function support working properly a gazillion years ago, as Luke says.  Exception handling took longer to be completely reliable, but that was also resolved years ago too.  In both cases changes needed to be made to LLVM, but those changes are all old hat now.  All that happened is that I lost interest in the project and no-one stepped forward to take it over.  That means that it's been quietly bit rotting for a while now.  For example: to accommodate internal changes in gcc-4.7 and later, dragonegg's ABI support needs to be rewritten, but I'd already lost interest in the project so never did it, which means that while it still mostly sorta works, thanks to some hacks, the plugin easily crashes on Ada tagged types starting from this gcc version.

Ciao, Duncan.

> 
> 
> 
> No, DragonEgg was the plugin that followed, think that's dead also.
> 
> 
> 
> But you're right, the nested function thing was a problem but I'm certain
> 
> Duncan said he was working will llvm way back to sort it out. Don't know
> 
> how far it got.
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> 
> 
> Luke