On Mon, Aug 29, 2016 at 10:19:25PM +0200, Steven Bosscher wrote: > On Mon, Aug 29, 2016 at 6:50 PM, Segher Boessenkool wrote: > > This patch changes that so that that def is only added after > > epilogue_completed. > ... > > Does this work on all other targets? > > Guessing: not for targets where INCOMING_RETURN_ADDR_RTX is the stack > register? > That'd be at least h8300, rl78, and rx.
The stack pointer is always added (earlier in this function): /* The always important stack pointer. */ bitmap_set_bit (entry_block_defs, STACK_POINTER_REGNUM); so that isn't it. History suggests it was a fix (or workaround) for a problem on ia64, but I might well have that wrong. Segher
