2008-12-08 09:07:54     Difference between performance between VDSP C/C++ compiler and GCC C/C++ compiler

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2008-12-08 09:07:54     Difference between performance between VDSP C/C++ compiler and GCC C/C++ compiler

Vasanth Nayak (INDIA)

Message: 66508   

 

Hi all,

 

I wanted to know whether there is any significant difference in performance between VDSP C/C++ compiler and the uClinux blackfin GCC compiler ?

 

It would be good if there is any link  documenting any performance difference.

 

 

 

Vasanth

 

 

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2008-12-08 12:18:48     Re: Difference between performance between VDSP C/C++ compiler and GCC C/C++ compiler

Mike Frysinger (UNITED STATES)

Message: 66513   

 

please read the FAQ

 

http://docs.blackfin.uclinux.org/doku.php?id=visualdsp:faq#which_compiler_does_better_optimization

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2008-12-08 12:37:52     Re: Difference between performance between VDSP C/C++ compiler and GCC C/C++ compiler

Kiran Kumar B (INDIA)

Message: 66516   

 

Hi Vasanth,  good question....    Below is some info I found in the Forum itself , I thought will share it with you :

 

" if you just want to compare toolchains, they are pretty close - VDSP beats gcc in some benchmarks (fixed point signal processing), gcc beats VDSP in others (floating point, control code).

 

gcc also believes that ANSI C is a specification(rules to be followed).

VDSP believes that ANSI C is a guideline (suggestions, but performance optimizations are normally more important).

 

It depends on what you want.

 

If you are looking at running  Linux on the Blackfin - there is no choice - it is only supported by gcc. "

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