On 7/24/24 12:00 PM, Raphael Moreira Zinsly wrote:
Add the TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE to riscv in
order to enable stack clash protection when using alloca.
The code and tests are the same used by aarch64.
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_compute_frame_info): Update
outgoing args size.
(riscv_stack_clash_protection_alloca_probe_range): New.
(TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE): New.
* config/riscv/riscv.h
(STACK_CLASH_MIN_BYTES_OUTGOING_ARGS): New.
(STACK_DYNAMIC_OFFSET): New.
Thanks for adding this. I don't offhand remember if I originally
noticed the lack of ALLOCA_PROBE_RANGE during review or as a result of
the initial package testing that started before the milkv blew up where
the unhandled cases very much looked alloca related. Either way, needed
fixing and thanks for taking care of it.
This looks good. So the only outstanding question is that one for
prologue temporaries in patch 4/5.
Jeff
