How to avoid temporary variables when using a global signal/data store

Question

Gerhard Feichtinger 2015-6-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/225169-how-to-avoid-temporary-variables-when-using-a-global-signal-data-store

评论： Gerhard Feichtinger 2015-7-8

I have a data store read from a global signal (ism_io_bus_global). No matter what I name the ougoing stick, I get code that looks similar to the following after code generation.

    /* DataStoreRead: '<S2>/ism_io_DSR' */
    crap_local_B.crap_name_mb = ism_io_bus_global;
    /* ModelReference: '<S2>/func' */
    func
      (&crap_local_B.crap_name_mb.sub_2.sub_A.field_1,
       crap_local_B.crap_name_mb.sub_1.sub_B.sub_x.field_2);

What I want is code that simply calls the next function from the global signal subfields, e.g.

    /* ModelReference: '<S2>/func' */
    func
      (&ism_io_bus_global.sub_2.sub_A.field_1,
       ism_io_bus_global.sub_1.sub_B.sub_x.field_2);

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Answer 1

Drew Davis 2015-6-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/225169-how-to-avoid-temporary-variables-when-using-a-global-signal-data-store#answer_183987

Check out this documentation page which talks about how to enable your model with expression folding and minimizing data copies between local and global variables.