Embedded coder loop vectorization

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Jonathan Horne
Jonathan Horne 2018-3-6
回答： Mark McBroom 2018-3-11
We're using embedded coder to target an ADI SHARC processor and looking to optimize execution speed.
When compiling the generated code with VisualDSP++, the compiler warns:
cc1434: {D} warning: loop would vectorize if alignment were known - consider inserting vector_for pragma if all memory accesses are aligned on even-word boundaries
Where it makes sense, these loops can be vectorized by manually inserting a #pragma vector_for before the associated for().
Is there a way to get embedded coder to automatically insert these types of pragmas into the generated code?
Thanks for any help! Jonathan

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回答（1 个）

Mark McBroom
Mark McBroom 2018-3-11
I am not aware of a way to insert these pragmas. However, you might want to investigate using the Code Replacement Library feature. With this feature, you can have the code generator replace standard math operations with optimized library functions provided by your vendor. For example, you could instruct the code generator to replace all matrix addition operations with a call to the function matadd() described in the VisualDSP++ Run Time Library .

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