[Bug tree-optimization/66010] [6 Regression] Missed optimization after inlining va_list parameter

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66010

--- Comment #11 from vries at gcc dot gnu.org ---
FTR, patch submission for follow-up patch:
https://gcc.gnu.org/ml/gcc-patches/2015-05/msg01178.html .