// Prefetch instructions (aux is option: 0 - PLDL1KEEP; 1 - PLDL1STRM)
(PrefetchCache addr mem)         => (PRFM [0] addr mem)
(PrefetchCacheStreamed addr mem) => (PRFM [1] addr mem)

// Arch-specific inlining for small or disjoint runtime.memmove
(SelectN [0] call:(CALLstatic {sym} s1:(MOVDstore _ (MOVDconst [sz]) s2:(MOVDstore  _ src s3:(MOVDstore {t} _ dst mem)))))
	&& sz >= 0
	&& isSameCall(sym, "runtime.memmove")

// that an And cleared, we can skip the And.
// This happens in bitmasking code like:
//   x &^= 3 << shift // clear two old bits
//   x  |= v << shift // set two new bits
// when shift is a small constant and v ends up a constant 3.
(Or8  (And8  x (Const8  [c2])) (Const8  <t> [c1])) && ^(c1 | c2) == 0 => (Or8  (Const8  <t> [c1]) x)