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Altera_Forum
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16 years ago

floating point operations with and without Custom instruction floating point hardware

Hi I want to test the floating point multipication execution time in Nios II with and without Custiom Instruction floating point hardware. I taught without adding Custom Instruction floating...
Altera_Forum's avatar
Altera_Forum
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16 years ago

As all your multiplications are with constant values, the compiler may be performing them at compile time and optimizing away the actual multiplication.

If that is the case, try declaring your variables "volatile" which should prevent the compiler from optimizing away the multiplications.