[Bug ipa/63533] Function splitter causes unnecessary splits

[y.gribov at samsung dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533

Yury Gribov <y.gribov at samsung dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |y.gribov at samsung dot com

--- Comment #1 from Yury Gribov <y.gribov at samsung dot com> ---
Created attachment 33713
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33713&action=edit
Draft patch

Here is a draft patch. If this makes sense I'll regtest and send to
gcc-patches.