On Wed, Feb 03, 2021 at 08:42:15AM -0600, Josh Poimboeuf wrote: > On Wed, Feb 03, 2021 at 01:02:23PM +0100, Peter Zijlstra wrote: > > Currently REG_SP_INDIRECT is unused but means (%rsp + offset), > > change it to mean (%rsp) + offset. > > > > This is somewhat unfortunate, since REG_BP_INDIRECT is used (by DRAP) > > and thus needs to retain the current (%rbp + offset). > > Offset is going to be zero, should it not work either way?
For DRAP? I couldn't tell in a hurry. I'm ever quite clear on how DRAP works. Some day, when I figure it out, i'll write a comment. Anyway, if it's always 0 for DRAP, then yes, I'll change both.
