What constructs restrict the ability of the compiler to optimize the alignment of arrays in memory? What constructs gives the compiler the most fl exibility in aligning arrays in memory?  What speedup...

What constructs restrict the ability of the compiler to optimize

the alignment of arrays in memory? What constructs gives the

compiler the most fl exibility in aligning arrays in memory?

 What speedup factor is available from SSE instructions? How

about GPGPUs?