Tim Prince writes: > kanishk rastogi wrote: > > hi all, > > I wanted to know if when i specify -O[0-3] flag to gcc does gcc > > optimize the code even violating ABI for that specific arch. > > If yes can i specify gcc not to violate the ABI .... > > I am mostly concerned witht he ABI specification which tells how to > > call another function.. > > > > Only the -Os changes the value of -mpreferred-stack-boundary, breaking > the ability to support vectorization or other alignment dependent code > in the callee. -Os breaks vectorization? That would be A Bug, for sure. Do you have references, Bugzilla entries, for this? Andrew.
