[Bug bootstrap/46528] [4.6 Regression] profiledbootstrap failure

[Jan Hubicka]

> we do CFG manipulations based on debug stmts (verified with a later
> assert that triggers on -O2 -g -fprofile-use).
> 
> It's of course unfortunate that we do this BB splitting at all when
> not doing coverage test.

The BB splitting is neccesary so the CFG can be solved (i.e. you have explicit edges to exit when program can terminate).

Honza