{name: "AtomicCompareAndSwap64", argLength: 4, typ: "(Bool,Mem)", hasSideEffects: true},    // if *arg0==arg1, then set *arg0=arg2.  Returns true if store happens and new memory.
	{name: "AtomicCompareAndSwapRel32", argLength: 4, typ: "(Bool,Mem)", hasSideEffects: true}, // if *arg0==arg1, then set *arg0=arg2.  Lock release, reports whether store happens and new memory.

(AtomicExchange(32|64) ...) => (LoweredAtomicExchange(32|64) ...)

(AtomicAdd(32|64) ...) => (LoweredAtomicAdd(32|64) ...)

(AtomicCompareAndSwap(32|64) ptr old new_ mem) => (LoweredAtomicCas(32|64) [1] ptr old new_ mem)
(AtomicCompareAndSwapRel32   ptr old new_ mem) => (LoweredAtomicCas32 [0] ptr old new_ mem)

(AtomicAnd(8|32)  ...) => (LoweredAtomicAnd(8|32)  ...)
(AtomicOr(8|32)   ...) => (LoweredAtomicOr(8|32)   ...)

		return true
	}
}
func rewriteValuePPC64_OpAtomicCompareAndSwapRel32(v *Value) bool {
	v_3 := v.Args[3]
	v_2 := v.Args[2]
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (AtomicCompareAndSwapRel32 ptr old new_ mem)
	// result: (LoweredAtomicCas32 [0] ptr old new_ mem)
	for {
		ptr := v_0
		old := v_1
		new_ := v_2
		mem := v_3
		v.reset(OpPPC64LoweredAtomicCas32)

		generic:        true,
	},
	{
		name:           "AtomicCompareAndSwap64",
		argLen:         4,
		hasSideEffects: true,
		generic:        true,
	},
	{
		name:           "AtomicCompareAndSwapRel32",
		argLen:         4,
		hasSideEffects: true,
		generic:        true,
	},
	{
		name:           "AtomicAnd8",
		argLen:         3,
		hasSideEffects: true,