[PATCH][RFC] Do some vectorizer-friendly canonicalization before vectorization

[Zdenek Dvorak]

Hello,

> +   /* Catch squaring.  */
> +   if ((host_integerp (exp, 0)
> +        && TREE_INT_CST_LOW (exp) == 2)

tree_low_cst (exp, 0) == 2.  Otherwise, the patch is OK.

Zdenek