[Bug target/39496] [4.2/4.3/4.4 Regression] GCC uses non-standard calling conventions for static functions with -O0.

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2009-03-18 21:57 -------
We used to check flag_unit_at_a_time in this function:
  /* Use register calling convention for local functions when possible.  */
  if (decl && TREE_CODE (decl) == FUNCTION_DECL
      && flag_unit_at_a_time && !profile_flag)

Which meant it never worked for C++ in 3.4 and above , for C, it always worked
until 4.4 which removed the check.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39496