On Tue, Sep 15, 2020 at 10:11:41AM +0100, Richard Sandiford wrote: > Qing Zhao <qing.z...@oracle.com> writes: > >> On Sep 14, 2020, at 2:20 PM, Richard Sandiford <richard.sandif...@arm.com> > >> wrote: (Putting correct info in DF, inserting the new insns in pro_and_epi).
But, scheduling runs *after* that, and then you need to prevent the inserted (zeroing) insns from moving -- if you don't, the code after some zeroing can be used as gadget! You want to always have all zeroing insns after *any* computational insn, or it becomes a gadget. Segher
