SIMD with blackfin-gcc

Sep 21, 2010 2 Replies

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Atilla 15 years ago

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I'm developing a bare-metal firmware on BF537(Surveyor SVS board). I don't have the time to learn assembly for blackfin, fortunately I saw SIMD i spossible with plain C. So

1- Does the compiler automatically use SIMD features if I do some loop unrolling like: instead of

for(i=0;i

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Boudewijn Dijkstra 15 years ago

Op Tue, 21 Sep 2010 13:16:29 +0200 schreef Atilla :

Which compiler?

Most compilers can perform loop unrolling themselves.

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6.37.1 Blackfin Variable Attributes

Your attribute is not on the list, so that attribute is either not a GCC attribute and/or your compiler is not standard GCC.

It depends what they really do.

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Vladimir Vassilevsky 15 years ago

Too bad. You will have to learn assembler for BlackFin even if you don't have time for it.

No. Unless you use built-ins. Even if you do so, it does miserable job.

Vladimir Vassilevsky DSP and Mixed Signal Design Consultant

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