If the following compilation option is used
–O3 –mtune=barcelona –msse4.2 –fprefetch-loop-arrays
How to know from assembly listing that the SIMD instructions are used ?
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Oliver Charlesworth
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Basmah
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3Well if you see any, then they're being used? – harold May 07 '12 at 18:39
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1AFAIK barcelonas do not have SSE 4.2 – Gunther Piez May 07 '12 at 19:02
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Assuming you're working on Linux (or similar), you can use objdump to examine the assembler of your object file or executable. You can then examine it for instances of SIMD instructions.
Oliver Charlesworth
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