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Make random faster by putting the innermost var last#6504
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abadams
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By pulling constant additions outside of quadratics, we can shave off a few add instructions in the inner loop for random number generation, which uses a quadratic modulo 2^32 I also removed the !overflows predicates, because rules already fail to match if a fold overflows. New rules formally verified.
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This reverts commit 0021165.
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40% faster, and I fixed the issue where the low bits of our noise have a low period. This combined with #6506 makes it possible to generate low-bit-width-noise very cheaply for things like dithering.