On Fri, 2020-05-08 at 19:51 +0200, Andreas Krebbel via Gcc-patches wrote:
> When compiling with -mbackchain -fstack-clash-protection currently no
> probes are emitted. This patch adjusts the "allocate_stack" expander
> to call anti_adjust_stack_and_probe_stack_clash when needed. In order
> to do this I had to export that function from explow.c.
>
> Ok for mainline?
>
> 2020-05-08 Andreas Krebbel <kreb...@linux.ibm.com>
>
> * explow.c (anti_adjust_stack_and_probe_stack_clash): Remove
> prototype. Remove static.
> * explow.h (anti_adjust_stack_and_probe_stack_clash): Add
> prototype.
> * config/s390/s390.md ("allocate_stack"): Call
> anti_adjust_stack_and_probe_stack_clash when stack clash
> protection is enabled.
>
> gcc/testsuite/ChangeLog:
>
> 2020-05-08 Andreas Krebbel <kreb...@linux.ibm.com>
>
> * gcc.target/s390/stack-clash-3.c: New test.
OK. Not sure how I missed the allocate_stack pattern in the s390 backend and
the
fact that it needed stack-clash handling. THanks for taking care of it.
jeff
>
