On 28 January 2018 at 11:25, Chris Hall wrote: > > With apologies for the noise... > > ...with v7.2.1, compiling for recent x86_64, the command line option > "-falign-loops=32" is accepted and has the desired effect. > > However I find that both: > > _Pragma("GCC optimize(\"align-loops=32\")") > > and: > > __attribute__((optimize("align-loops=32"))) > > are rejected with a "warning: bad option '-falign-loops=32'" -- reported for > each and every affected function. > > Should I report this as a bug ? Yes, if you can't find an existing report for it.