> On 24 Mar 2016, at 05:58, Alan Modra <amo...@gmail.com> wrote: > > On Wed, Mar 23, 2016 at 01:38:26PM -0400, David Edelsohn wrote: >> The description and >> references to prior SPE prologue and epilogue changes do not confirm a >> wider problem. > > There's a good chance this affects ABI_V4 large stack frames too. > If restoring regs inline we'll be using r11 as a base, just like SPE > does with moderate sized stack frames when restoring 64-bit regs.
Exactly. If I'm not mistaken, the set of problematic cases encompasses everything which uses in the epilogue, as a base, a register which might have been used last to designate a global object in the function body. There are such uses of at least r11 not limited to SPE. Olivier
