On 09/07/2011 10:52 AM, Jian-Xin Lai wrote:
6. It looks like there is no options to skip some of the ZDL
transformation? is it only controlled by the pragma?
For ZDL transformation , we have "WOPT_Enable_ZDL" option to
control the whole zdl transformation. If this is set to on, we
assume all *trip-countable* loops to be transformed to zdl. People
may find some loops do not need such a transform, they are
provided with the zdl off pragma. We could not do the reverse,
i.e, disable all transformation and using pragma zdl on to enable
some, since zdl has to be judged by compiler not by human being.
I understand the programmer can use the pragma to skip some of the ZDL
loops. But you still need to have some internal options like
skip_a/b/e for automatically triaging purpose.
Jianxin, I am not quite understand. Could you provide a context we
need such an option?
Thanks.
Gang
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