http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58622
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2014-01-28 Ever confirmed|0 |1 --- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- Confirmed. Prologue and epilogue code is constructed in the backend late on. Any optimizations have to be done during the code generation. The particular path with -fomit-frame-pointer is not on by default and clearly hasn't been tuned yet.