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Question

Why are non-SIMD floating-point operations likely to take at least one clock cycle in IA-32 processors?

a.

There is only one unit that performs floating-point operations

b.

There are multiple units that perform floating-point operations

c.

The ALUs in port 0 and port 1 cannot perform floating-point operations

d.

The FPU stack cannot handle floating-point operations efficiently

Posted under Reverse Engineering

Answer: (a).There is only one unit that performs floating-point operations Explanation:Non-SIMD floating-point operations are likely to take at least one clock cycle in IA-32 processors because there is only one unit that actually performs floating-point operations (and another unit that moves data between memory and the FPU stack).

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Q. Why are non-SIMD floating-point operations likely to take at least one clock cycle in IA-32 processors?