[Bug gcov-profile/79891] Wrong count of line coverage in case of gcov -a

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79891

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Yes, the merged is the issue, but looks it's created at the very beginning:

test.c.004t.gimple:
...
  <D.2315>:
  if (false_var != 0) goto <D.2317>; else goto <D.2318>;
  <D.2317>:
  ret = 111;
  <D.2318>:
  goto <D.2319>;
  <D.2316>:
  ret = 999;
  <D.2319>:
  D.2320 = ret;
  return D.2320;