rnk added a comment.

In https://reviews.llvm.org/D39673#931487, @martell wrote:

> Just as a note there is still a lot to be desired here. I do not particularly 
> like the `UseSEHExceptions` function default and the actual macro definition 
> guards should be based on the current `ExceptionModel` because we set that in 
> `lib/CodeGen/BackendUtil.cpp`. This way we do not need to have some silly 
> default of x64 && windows for UseSEHExceptions and can rely on the llvm 
> backend defaults but override within the driver we want like the apple 
> targets do for sjlj. This does for now keep the current functionality while 
> giving us a flag to override which is the goal of this patch.


We have to know the EH model before pre-processing, and that shouldn't rely on 
LLVM TargetOptions. We can probably reuse the `llvm::ExceptionHandling` enum 
instead of these various overlapping booleans, if that's the direction you want 
to go. However, I don't see how we can get away from the clang toolchain 
knowing the default EH model for each target.


Repository:
  rL LLVM

https://reviews.llvm.org/D39673



_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to