[Bug rtl-optimization/84058] RTl partitioning fixup should drag very small blocks back to hot partition

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84058

--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
000000000065ff3a <inflateStateCheck.lto_priv.5319.cold.366>:
  65ff3a:       b8 01 00 00 00          mov    $0x1,%eax
  65ff3f:       c3                      retq   
  65ff40:       b8 01 00 00 00          mov    $0x1,%eax
  65ff45:       c3                      retq   
  65ff46:       b8 01 00 00 00          mov    $0x1,%eax
  65ff4b:       c3                      retq   
  65ff4c:       b8 01 00 00 00          mov    $0x1,%eax
  65ff51:       c3                      retq   
  65ff52:       b8 01 00 00 00          mov    $0x1,%eax
  65ff57:       c3                      retq   

another cute example of this phenomena. Also missed tail merging.