https://bugs.kde.org/show_bug.cgi?id=450705
Andreas Arnez <ar...@linux.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REPORTED |ASSIGNED
Assignee|jsew...@acm.org |ar...@linux.ibm.com
Ever confirmed|0 |1
--- Comment #1 from Andreas Arnez <ar...@linux.ibm.com> ---
Created attachment 151228
--> https://bugs.kde.org/attachment.cgi?id=151228&action=edit
Preliminary patch for adding NNPA support
This introduces NNPA support, but the memory effects of the NNPA instruction
are not represented correctly. In particular this means that memcheck will have
false positives as well as false negatives.
The current approach uses a dirty helper to implement NNPA. Currently, only a
single memory effect can be specified for a dirty helper, and the size is
fixed. However, the NNPA instruction behaves more like a subroutine that runs
on a separate CPU. It reads and writes various memory regions at dynamic
addresses with dynamic sizes. In that regard it might be more comparable with a
system call.
I mainly attach the patch for illustration purposes. Ideas how to do represent
the memory effects correctly are very welcome.
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