Theory
To vectorize a program, the compiler's optimizer must first understand the dependencies between statements and re-align them, if necessary. Once the dependencies are mapped, the optimizer must properly arrange the implementing instructions changing appropriate candidates to vector instructions, which operate on multiple data items.
Read more about this topic: Vectorization (parallel Computing)
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“A theory if you hold it hard enough
And long enough gets rated as a creed....”
—Robert Frost (1874–1963)
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—Thomas Carlyle (1795–1881)
“Won’t this whole instinct matter bear revision?
Won’t almost any theory bear revision?
To err is human, not to, animal.”
—Robert Frost (1874–1963)