[Bug c++/119292] code deduplication in case of throw (improvement)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119292

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60761
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60761&action=edit
better example

For x86_64 since -freorder-blocks-and-partition is turned on by default, the
throw part will go into the code section which in turn might not be loaded into
memory if not used.

Note this a better example.
GCC has code that will split off part of the function and then inline the first
part. So it could in theory split off throw part of the function and then ICF
comes a long (which needs be improved to support matching constant vs
non-constant in this case).

I am not sure how much savings it will be either.