{name: "LAO", argLength: 3, reg: gpstore, asm: "LAO", typ: "Mem", clobberFlags: true, hasSideEffects: true},         // *arg0 |= arg1. arg2 = mem.
		{name: "LAOfloor", argLength: 3, reg: gpstorelab, asm: "LAO", typ: "Mem", clobberFlags: true, hasSideEffects: true}, // *(floor(arg0, 4)) |= arg1. arg2 = mem.

		// Compare and swap.

// applying atomic OR operation to target word.
//
// *(*uint32)(ptr &^ 3) |= uint32(val) << ((3 << 3) ^ ((ptr & 3) << 3))
//
(AtomicOr8  ptr val mem)
  => (LAOfloor
       ptr
       (SLW <typ.UInt32>
         (MOVBZreg <typ.UInt32> val)
         (RXSBG <typ.UInt32> {s390x.NewRotateParams(59, 60, 3)} (MOVDconst [3<<3]) ptr))
       mem)

(AtomicAnd32 ...) => (LAN ...)

}
func rewriteValueS390X_OpAtomicOr8(v *Value) bool {
	v_2 := v.Args[2]
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (AtomicOr8 ptr val mem)
	// result: (LAOfloor ptr (SLW <typ.UInt32> (MOVBZreg <typ.UInt32> val) (RXSBG <typ.UInt32> {s390x.NewRotateParams(59, 60, 3)} (MOVDconst [3<<3]) ptr)) mem)
	for {
		ptr := v_0
		val := v_1
		mem := v_2
		v.reset(OpS390XLAOfloor)

				{0, 4295023614}, // R1 R2 R3 R4 R5 R6 R7 R8 R9 R11 R12 R14 SP SB
				{1, 56319},      // R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R11 R12 R14 SP
			},
		},
	},
	{
		name:           "LAOfloor",
		argLen:         3,
		clobberFlags:   true,
		hasSideEffects: true,
		asm:            s390x.ALAO,
		reg: regInfo{
			inputs: []inputInfo{
				{0, 2},     // R1