dtcxzyw wrote:
> > The ubsan handler cannot be eliminated because inaccessiblemem: readwrite
> > indicates that it has externally observable side effects.
>
> That is not how things work. For example:
>
> ```
> $ echo "declare void @g() define void @f() nounwind { call void @g()
> memory(argmem: read, inaccessiblemem: readwrite) willreturn unreachable }" |
> opt -O3 -S
> ; ModuleID = '<stdin>'
> source_filename = "<stdin>"
>
> ; Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind
> willreturn memory(none)
> define void @f() local_unnamed_addr #0 {
> unreachable
> }
>
> attributes #0 = { mustprogress nofree norecurse noreturn nosync nounwind
> willreturn memory(none) }
> ```
Fixed. Now it sets `mustprogress`.
https://github.com/llvm/llvm-project/pull/130990
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
