Hi! On Mon, May 25, 2020 at 06:20:49PM +0100, Jozef Lawrynowicz wrote: > On Tue, Mar 31, 2020 at 04:49:53PM -0500, Segher Boessenkool wrote: > > You need reg_notes for more than just the stack updates: importantly, > > also for the restores of any saved register. > > Thanks for the advice, indeed the reason I was having problems was > because not all stack operations were properly annotated with reg notes. > > The reason I was seeing the ICE was because of unspec insns which were marked > as frame related but didn't have accompanything reg notes, of course it > is now clear that stack modifications in an unspec need to be explicitly > described.
One thing that helps debugging this is readelf -wframe (but there are other methods). A bit late for help to you ;-) > (Apologies for the late response, but I figure I may as well document > the conclusion came to with this.) No, thanks, it is good to hear it helped! Segher
