// maintain FP for DUFFCOPY
			q3 := obj.Appendp(q2, c.newprog)
			q3.Pos = p.Pos
			q3.As = ASUB
			q3.From.Type = obj.TYPE_CONST
			q3.From.Offset = 24
			q3.Reg = REGSP
			q3.To.Type = obj.TYPE_REG
			q3.To.Reg = REGFP

			q5 := obj.Appendp(q4, c.newprog)
			q5.Pos = p.Pos
			q5.As = ASUB
			q5.From.Type = obj.TYPE_CONST
			q5.From.Offset = 8
			q5.Reg = REGSP

Eugene Burmako <******@****.***> 1671166704 -0800

	AFMULCC
	AFMULS
	AFMULSCC
	AFNABS
	AFNABSCC
	AFNEG
	AFNEGCC
	AFNMADD
	AFNMADDCC
	AFNMADDS
	AFNMADDSCC
	AFNMSUB
	AFNMSUBCC
	AFNMSUBS
	AFNMSUBSCC
	AFRSP
	AFRSPCC
	AFSUB
	AFSUBCC
	AFSUBS
	AFSUBSCC
	AISEL
	AMOVMW
	ALBAR
	ALHAR
	ALSW
	ALWAR
	ALWSYNC
	AMOVDBR
	AMOVWBR
	AMOVB
	AMOVBU
	AMOVBZ
	AMOVBZU
	AMOVH
	AMOVHBR
	AMOVHU

	FMOVD	0(R1), F1
	FCMPU	F2, F1
	BGT	L9
	BVS	L11
	MOVD	$·tanxadd<>+0(SB), R1
	FMOVD	88(R5), F6
	FMOVD	0(R1), F4
	WFMSDB	V0, V6, V4, V6
	FMOVD	80(R5), F1
	FADD	F6, F4
	FMOVD	72(R5), F2
	FMSUB	F1, F4, F0
	FMOVD	64(R5), F3
	WFMADB	V4, V2, V0, V2
	FMOVD	56(R5), F1
	WFMADB	V4, V3, V2, V4
	FMUL	F2, F2
	VLEG	$0, 48(R5), V18
	LGDR	F6, R1
	FMOVD	40(R5), F5
	FMOVD	32(R5), F3
	FMADD	F1, F2, F3

	// This is the same heuristic that libpng uses, although the filters are attempted in order of
	// estimated most likely to be minimal (ftUp, ftPaeth, ftNone, ftSub, ftAverage), rather than
	// in their enumeration order (ftNone, ftSub, ftUp, ftAverage, ftPaeth).
	cdat0 := cr[0][1:]
	cdat1 := cr[1][1:]
	cdat2 := cr[2][1:]
	cdat3 := cr[3][1:]
	cdat4 := cr[4][1:]
	pdat := pr[1:]
	n := len(cdat0)

	ANEGV

	ANOOP // hardware nop
	ANOR
	AOR
	AREM
	AREMU

	ARFE

	ASC
	ASCV

	ASGT
	ASGTU

	ASLL
	ASQRTD
	ASQRTF
	ASRA
	ASRL
	AROTR
	ASUB
	ASUBD
	ASUBF

	ASUBU
	ASUBW
	ADBAR
	ASYSCALL

	ATEQ
	ATNE

	AWORD

	AXOR

	AMASKEQZ
	AMASKNEZ

	// 64-bit
	AMOVV
	AMOVVL
	AMOVVR

	BYTE	$0x00
	BYTE	$0x94
	ADDW	R3, R1
	ADDW	R4, R1
	SLW	$16, R1, R1
	SLD	$32, R1, R1
	LDGR	R1, F2
	WFMDB	V2, V2, V4
	WFMDB	V4, V0, V6
	WFMSDB	V4, V6, V2, V4
	FMOVD	40(R9), F6
	FMSUB	F1, F4, F2
	FMOVD	32(R9), F4
	WFMDB	V2, V2, V3
	FMOVD	24(R9), F1
	FMUL	F3, F0
	FMOVD	16(R9), F3
	WFMADB	V2, V0, V5, V2
	FMOVD	8(R9), F5
	FMADD	F6, F2, F4
	WFMADB	V2, V1, V3, V1
	WFMDB	V2, V2, V6

	ANEGV
	ANOOP // hardware nop
	ANOR
	AOR
	AREM
	AREMU
	ARFE
	AROTR
	AROTRV
	ASC
	ASCV
	ASEB
	ASEH
	ASGT
	ASGTU
	ASLL
	ASQRTD
	ASQRTF
	ASRA
	ASRL
	ASUB
	ASUBD
	ASUBF
	ASUBU
	ASUBW
	ASYNC
	ASYSCALL
	ATEQ
	ATLBP
	ATLBR
	ATLBWI
	ATLBWR
	ATNE
	AWORD
	AWSBH
	AXOR

	/* 64-bit */
	AMOVV
	AMOVVL
	AMOVVR

		var as2 obj.As
		switch p.As {
		case AADD:
			as2 = ASUB // ADD -> ADD/SUB pair
		case ASUB:
			as2 = AADD // SUB -> SUB/ADD pair
		case ARSB:
			as2 = ASUB // RSB -> RSB/SUB pair
		case AADC:
			as2 = ASUB // ADC -> ADC/SUB pair
		case ASBC:
			as2 = AADD // SBC -> SBC/ADD pair
		case ARSC:
			as2 = ASUB // RSC -> RSC/SUB pair
		default:
			c.ctxt.Diag("unknown second op for %v", p)

	// offset from the thread local base.
	C_TLS_IE

	C_TEXTSIZE

	C_GOK

	C_NCLASS /* must be the last */
)

const (
	AAND = obj.ABaseARM + obj.A_ARCHSPECIFIC + iota
	AEOR
	ASUB
	ARSB
	AADD
	AADC
	ASBC
	ARSC
	ATST
	ATEQ
	ACMP
	ACMN
	AORR
	ABIC

	AMVN

	/*
	 * Do not reorder or fragment the conditional branch