> 2017-11-17 Daniel Cederman
>
> * config/sparc/sparc.c (atomic_insn_p): New function.
> (sparc_do_work_around_errata): Insert NOP instructions to
> prevent sequences that could trigger the TN-0010 errata for
> UT700.
> * config/sparc/sync.md (atomic_compare_and_sw
This patch provides a workaround for the errata described in GRLIB-TN-0010.
If the workaround is enabled it will:
* Insert a NOP between load instruction and atomic
instruction (swap, ldstub, casa).
* Insert a NOP at branch target if load in delay slot
and atomic instruction at branch target
