示例#1
0
文件: gsubr.go 项目: ckeyer/gosrc
func gcmp(as int, lhs *gc.Node, rhs *gc.Node) *obj.Prog {
	if lhs.Op != gc.OREGISTER {
		gc.Fatalf("bad operands to gcmp: %v %v", gc.Oconv(int(lhs.Op), 0), gc.Oconv(int(rhs.Op), 0))
	}

	p := rawgins(as, rhs, nil)
	raddr(lhs, p)
	return p
}
示例#2
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * insert n into reg slot of p
 */
func raddr(n *gc.Node, p *obj.Prog) {
	var a obj.Addr
	gc.Naddr(&a, n)
	if a.Type != obj.TYPE_REG {
		if n != nil {
			gc.Fatalf("bad in raddr: %v", gc.Oconv(int(n.Op), 0))
		} else {
			gc.Fatalf("bad in raddr: <null>")
		}
		p.Reg = 0
	} else {
		p.Reg = a.Reg
	}
}
示例#3
0
文件: gsubr.go 项目: ckeyer/gosrc
// jmptoset returns ASETxx for AJxx.
func jmptoset(jmp int) int {
	switch jmp {
	case x86.AJEQ:
		return x86.ASETEQ
	case x86.AJNE:
		return x86.ASETNE
	case x86.AJLT:
		return x86.ASETLT
	case x86.AJCS:
		return x86.ASETCS
	case x86.AJLE:
		return x86.ASETLE
	case x86.AJLS:
		return x86.ASETLS
	case x86.AJGT:
		return x86.ASETGT
	case x86.AJHI:
		return x86.ASETHI
	case x86.AJGE:
		return x86.ASETGE
	case x86.AJCC:
		return x86.ASETCC
	case x86.AJMI:
		return x86.ASETMI
	case x86.AJOC:
		return x86.ASETOC
	case x86.AJOS:
		return x86.ASETOS
	case x86.AJPC:
		return x86.ASETPC
	case x86.AJPL:
		return x86.ASETPL
	case x86.AJPS:
		return x86.ASETPS
	}
	gc.Fatalf("jmptoset: no entry for %v", gc.Oconv(jmp, 0))
	panic("unreachable")
}
示例#4
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * return Axxx for Oxxx on type t.
 */
func optoas(op gc.Op, t *gc.Type) int {
	if t == nil {
		gc.Fatalf("optoas: t is nil")
	}

	// avoid constant conversions in switches below
	const (
		OMINUS_ = uint32(gc.OMINUS) << 16
		OLSH_   = uint32(gc.OLSH) << 16
		ORSH_   = uint32(gc.ORSH) << 16
		OADD_   = uint32(gc.OADD) << 16
		OSUB_   = uint32(gc.OSUB) << 16
		OMUL_   = uint32(gc.OMUL) << 16
		ODIV_   = uint32(gc.ODIV) << 16
		OOR_    = uint32(gc.OOR) << 16
		OAND_   = uint32(gc.OAND) << 16
		OXOR_   = uint32(gc.OXOR) << 16
		OEQ_    = uint32(gc.OEQ) << 16
		ONE_    = uint32(gc.ONE) << 16
		OLT_    = uint32(gc.OLT) << 16
		OLE_    = uint32(gc.OLE) << 16
		OGE_    = uint32(gc.OGE) << 16
		OGT_    = uint32(gc.OGT) << 16
		OCMP_   = uint32(gc.OCMP) << 16
		OAS_    = uint32(gc.OAS) << 16
		OHMUL_  = uint32(gc.OHMUL) << 16
	)

	a := int(obj.AXXX)
	switch uint32(op)<<16 | uint32(gc.Simtype[t.Etype]) {
	default:
		gc.Fatalf("optoas: no entry for op=%v type=%v", gc.Oconv(int(op), 0), t)

	case OEQ_ | gc.TBOOL,
		OEQ_ | gc.TINT8,
		OEQ_ | gc.TUINT8,
		OEQ_ | gc.TINT16,
		OEQ_ | gc.TUINT16,
		OEQ_ | gc.TINT32,
		OEQ_ | gc.TUINT32,
		OEQ_ | gc.TINT64,
		OEQ_ | gc.TUINT64,
		OEQ_ | gc.TPTR32,
		OEQ_ | gc.TPTR64,
		OEQ_ | gc.TFLOAT32,
		OEQ_ | gc.TFLOAT64:
		a = ppc64.ABEQ

	case ONE_ | gc.TBOOL,
		ONE_ | gc.TINT8,
		ONE_ | gc.TUINT8,
		ONE_ | gc.TINT16,
		ONE_ | gc.TUINT16,
		ONE_ | gc.TINT32,
		ONE_ | gc.TUINT32,
		ONE_ | gc.TINT64,
		ONE_ | gc.TUINT64,
		ONE_ | gc.TPTR32,
		ONE_ | gc.TPTR64,
		ONE_ | gc.TFLOAT32,
		ONE_ | gc.TFLOAT64:
		a = ppc64.ABNE

	case OLT_ | gc.TINT8, // ACMP
		OLT_ | gc.TINT16,
		OLT_ | gc.TINT32,
		OLT_ | gc.TINT64,
		OLT_ | gc.TUINT8,
		// ACMPU
		OLT_ | gc.TUINT16,
		OLT_ | gc.TUINT32,
		OLT_ | gc.TUINT64,
		OLT_ | gc.TFLOAT32,
		// AFCMPU
		OLT_ | gc.TFLOAT64:
		a = ppc64.ABLT

	case OLE_ | gc.TINT8, // ACMP
		OLE_ | gc.TINT16,
		OLE_ | gc.TINT32,
		OLE_ | gc.TINT64,
		OLE_ | gc.TUINT8,
		// ACMPU
		OLE_ | gc.TUINT16,
		OLE_ | gc.TUINT32,
		OLE_ | gc.TUINT64:
		// No OLE for floats, because it mishandles NaN.
		// Front end must reverse comparison or use OLT and OEQ together.
		a = ppc64.ABLE

	case OGT_ | gc.TINT8,
		OGT_ | gc.TINT16,
		OGT_ | gc.TINT32,
		OGT_ | gc.TINT64,
		OGT_ | gc.TUINT8,
		OGT_ | gc.TUINT16,
		OGT_ | gc.TUINT32,
		OGT_ | gc.TUINT64,
		OGT_ | gc.TFLOAT32,
		OGT_ | gc.TFLOAT64:
		a = ppc64.ABGT

	case OGE_ | gc.TINT8,
		OGE_ | gc.TINT16,
		OGE_ | gc.TINT32,
		OGE_ | gc.TINT64,
		OGE_ | gc.TUINT8,
		OGE_ | gc.TUINT16,
		OGE_ | gc.TUINT32,
		OGE_ | gc.TUINT64:
		// No OGE for floats, because it mishandles NaN.
		// Front end must reverse comparison or use OLT and OEQ together.
		a = ppc64.ABGE

	case OCMP_ | gc.TBOOL,
		OCMP_ | gc.TINT8,
		OCMP_ | gc.TINT16,
		OCMP_ | gc.TINT32,
		OCMP_ | gc.TPTR32,
		OCMP_ | gc.TINT64:
		a = ppc64.ACMP

	case OCMP_ | gc.TUINT8,
		OCMP_ | gc.TUINT16,
		OCMP_ | gc.TUINT32,
		OCMP_ | gc.TUINT64,
		OCMP_ | gc.TPTR64:
		a = ppc64.ACMPU

	case OCMP_ | gc.TFLOAT32,
		OCMP_ | gc.TFLOAT64:
		a = ppc64.AFCMPU

	case OAS_ | gc.TBOOL,
		OAS_ | gc.TINT8:
		a = ppc64.AMOVB

	case OAS_ | gc.TUINT8:
		a = ppc64.AMOVBZ

	case OAS_ | gc.TINT16:
		a = ppc64.AMOVH

	case OAS_ | gc.TUINT16:
		a = ppc64.AMOVHZ

	case OAS_ | gc.TINT32:
		a = ppc64.AMOVW

	case OAS_ | gc.TUINT32,
		OAS_ | gc.TPTR32:
		a = ppc64.AMOVWZ

	case OAS_ | gc.TINT64,
		OAS_ | gc.TUINT64,
		OAS_ | gc.TPTR64:
		a = ppc64.AMOVD

	case OAS_ | gc.TFLOAT32:
		a = ppc64.AFMOVS

	case OAS_ | gc.TFLOAT64:
		a = ppc64.AFMOVD

	case OADD_ | gc.TINT8,
		OADD_ | gc.TUINT8,
		OADD_ | gc.TINT16,
		OADD_ | gc.TUINT16,
		OADD_ | gc.TINT32,
		OADD_ | gc.TUINT32,
		OADD_ | gc.TPTR32,
		OADD_ | gc.TINT64,
		OADD_ | gc.TUINT64,
		OADD_ | gc.TPTR64:
		a = ppc64.AADD

	case OADD_ | gc.TFLOAT32:
		a = ppc64.AFADDS

	case OADD_ | gc.TFLOAT64:
		a = ppc64.AFADD

	case OSUB_ | gc.TINT8,
		OSUB_ | gc.TUINT8,
		OSUB_ | gc.TINT16,
		OSUB_ | gc.TUINT16,
		OSUB_ | gc.TINT32,
		OSUB_ | gc.TUINT32,
		OSUB_ | gc.TPTR32,
		OSUB_ | gc.TINT64,
		OSUB_ | gc.TUINT64,
		OSUB_ | gc.TPTR64:
		a = ppc64.ASUB

	case OSUB_ | gc.TFLOAT32:
		a = ppc64.AFSUBS

	case OSUB_ | gc.TFLOAT64:
		a = ppc64.AFSUB

	case OMINUS_ | gc.TINT8,
		OMINUS_ | gc.TUINT8,
		OMINUS_ | gc.TINT16,
		OMINUS_ | gc.TUINT16,
		OMINUS_ | gc.TINT32,
		OMINUS_ | gc.TUINT32,
		OMINUS_ | gc.TPTR32,
		OMINUS_ | gc.TINT64,
		OMINUS_ | gc.TUINT64,
		OMINUS_ | gc.TPTR64:
		a = ppc64.ANEG

	case OAND_ | gc.TINT8,
		OAND_ | gc.TUINT8,
		OAND_ | gc.TINT16,
		OAND_ | gc.TUINT16,
		OAND_ | gc.TINT32,
		OAND_ | gc.TUINT32,
		OAND_ | gc.TPTR32,
		OAND_ | gc.TINT64,
		OAND_ | gc.TUINT64,
		OAND_ | gc.TPTR64:
		a = ppc64.AAND

	case OOR_ | gc.TINT8,
		OOR_ | gc.TUINT8,
		OOR_ | gc.TINT16,
		OOR_ | gc.TUINT16,
		OOR_ | gc.TINT32,
		OOR_ | gc.TUINT32,
		OOR_ | gc.TPTR32,
		OOR_ | gc.TINT64,
		OOR_ | gc.TUINT64,
		OOR_ | gc.TPTR64:
		a = ppc64.AOR

	case OXOR_ | gc.TINT8,
		OXOR_ | gc.TUINT8,
		OXOR_ | gc.TINT16,
		OXOR_ | gc.TUINT16,
		OXOR_ | gc.TINT32,
		OXOR_ | gc.TUINT32,
		OXOR_ | gc.TPTR32,
		OXOR_ | gc.TINT64,
		OXOR_ | gc.TUINT64,
		OXOR_ | gc.TPTR64:
		a = ppc64.AXOR

		// TODO(minux): handle rotates
	//case CASE(OLROT, TINT8):
	//case CASE(OLROT, TUINT8):
	//case CASE(OLROT, TINT16):
	//case CASE(OLROT, TUINT16):
	//case CASE(OLROT, TINT32):
	//case CASE(OLROT, TUINT32):
	//case CASE(OLROT, TPTR32):
	//case CASE(OLROT, TINT64):
	//case CASE(OLROT, TUINT64):
	//case CASE(OLROT, TPTR64):
	//	a = 0//???; RLDC?
	//	break;

	case OLSH_ | gc.TINT8,
		OLSH_ | gc.TUINT8,
		OLSH_ | gc.TINT16,
		OLSH_ | gc.TUINT16,
		OLSH_ | gc.TINT32,
		OLSH_ | gc.TUINT32,
		OLSH_ | gc.TPTR32,
		OLSH_ | gc.TINT64,
		OLSH_ | gc.TUINT64,
		OLSH_ | gc.TPTR64:
		a = ppc64.ASLD

	case ORSH_ | gc.TUINT8,
		ORSH_ | gc.TUINT16,
		ORSH_ | gc.TUINT32,
		ORSH_ | gc.TPTR32,
		ORSH_ | gc.TUINT64,
		ORSH_ | gc.TPTR64:
		a = ppc64.ASRD

	case ORSH_ | gc.TINT8,
		ORSH_ | gc.TINT16,
		ORSH_ | gc.TINT32,
		ORSH_ | gc.TINT64:
		a = ppc64.ASRAD

		// TODO(minux): handle rotates
	//case CASE(ORROTC, TINT8):
	//case CASE(ORROTC, TUINT8):
	//case CASE(ORROTC, TINT16):
	//case CASE(ORROTC, TUINT16):
	//case CASE(ORROTC, TINT32):
	//case CASE(ORROTC, TUINT32):
	//case CASE(ORROTC, TINT64):
	//case CASE(ORROTC, TUINT64):
	//	a = 0//??? RLDC??
	//	break;

	case OHMUL_ | gc.TINT64:
		a = ppc64.AMULHD

	case OHMUL_ | gc.TUINT64,
		OHMUL_ | gc.TPTR64:
		a = ppc64.AMULHDU

	case OMUL_ | gc.TINT8,
		OMUL_ | gc.TINT16,
		OMUL_ | gc.TINT32,
		OMUL_ | gc.TINT64:
		a = ppc64.AMULLD

	case OMUL_ | gc.TUINT8,
		OMUL_ | gc.TUINT16,
		OMUL_ | gc.TUINT32,
		OMUL_ | gc.TPTR32,
		// don't use word multiply, the high 32-bit are undefined.
		OMUL_ | gc.TUINT64,
		OMUL_ | gc.TPTR64:
		// for 64-bit multiplies, signedness doesn't matter.
		a = ppc64.AMULLD

	case OMUL_ | gc.TFLOAT32:
		a = ppc64.AFMULS

	case OMUL_ | gc.TFLOAT64:
		a = ppc64.AFMUL

	case ODIV_ | gc.TINT8,
		ODIV_ | gc.TINT16,
		ODIV_ | gc.TINT32,
		ODIV_ | gc.TINT64:
		a = ppc64.ADIVD

	case ODIV_ | gc.TUINT8,
		ODIV_ | gc.TUINT16,
		ODIV_ | gc.TUINT32,
		ODIV_ | gc.TPTR32,
		ODIV_ | gc.TUINT64,
		ODIV_ | gc.TPTR64:
		a = ppc64.ADIVDU

	case ODIV_ | gc.TFLOAT32:
		a = ppc64.AFDIVS

	case ODIV_ | gc.TFLOAT64:
		a = ppc64.AFDIV
	}

	return a
}
示例#5
0
文件: cgen64.go 项目: ckeyer/gosrc
/*
 * generate comparison of nl, nr, both 64-bit.
 * nl is memory; nr is constant or memory.
 */
func cmp64(nl *gc.Node, nr *gc.Node, op gc.Op, likely int, to *obj.Prog) {
	var lo1 gc.Node
	var hi1 gc.Node
	var lo2 gc.Node
	var hi2 gc.Node
	var r1 gc.Node
	var r2 gc.Node

	split64(nl, &lo1, &hi1)
	split64(nr, &lo2, &hi2)

	// compare most significant word;
	// if they differ, we're done.
	t := hi1.Type

	gc.Regalloc(&r1, gc.Types[gc.TINT32], nil)
	gc.Regalloc(&r2, gc.Types[gc.TINT32], nil)
	gins(arm.AMOVW, &hi1, &r1)
	gins(arm.AMOVW, &hi2, &r2)
	gins(arm.ACMP, &r1, &r2)
	gc.Regfree(&r1)
	gc.Regfree(&r2)

	var br *obj.Prog
	switch op {
	default:
		gc.Fatalf("cmp64 %v %v", gc.Oconv(int(op), 0), t)

		// cmp hi
	// bne L
	// cmp lo
	// beq to
	// L:
	case gc.OEQ:
		br = gc.Gbranch(arm.ABNE, nil, -likely)

		// cmp hi
	// bne to
	// cmp lo
	// bne to
	case gc.ONE:
		gc.Patch(gc.Gbranch(arm.ABNE, nil, likely), to)

		// cmp hi
	// bgt to
	// blt L
	// cmp lo
	// bge to (or bgt to)
	// L:
	case gc.OGE,
		gc.OGT:
		gc.Patch(gc.Gbranch(optoas(gc.OGT, t), nil, likely), to)

		br = gc.Gbranch(optoas(gc.OLT, t), nil, -likely)

		// cmp hi
	// blt to
	// bgt L
	// cmp lo
	// ble to (or jlt to)
	// L:
	case gc.OLE,
		gc.OLT:
		gc.Patch(gc.Gbranch(optoas(gc.OLT, t), nil, likely), to)

		br = gc.Gbranch(optoas(gc.OGT, t), nil, -likely)
	}

	// compare least significant word
	t = lo1.Type

	gc.Regalloc(&r1, gc.Types[gc.TINT32], nil)
	gc.Regalloc(&r2, gc.Types[gc.TINT32], nil)
	gins(arm.AMOVW, &lo1, &r1)
	gins(arm.AMOVW, &lo2, &r2)
	gins(arm.ACMP, &r1, &r2)
	gc.Regfree(&r1)
	gc.Regfree(&r2)

	// jump again
	gc.Patch(gc.Gbranch(optoas(op, t), nil, likely), to)

	// point first branch down here if appropriate
	if br != nil {
		gc.Patch(br, gc.Pc)
	}

	splitclean()
	splitclean()
}
示例#6
0
文件: cgen64.go 项目: ckeyer/gosrc
/*
 * attempt to generate 64-bit
 *	res = n
 * return 1 on success, 0 if op not handled.
 */
func cgen64(n *gc.Node, res *gc.Node) {
	if res.Op != gc.OINDREG && res.Op != gc.ONAME {
		gc.Dump("n", n)
		gc.Dump("res", res)
		gc.Fatalf("cgen64 %v of %v", gc.Oconv(int(n.Op), 0), gc.Oconv(int(res.Op), 0))
	}

	l := n.Left
	var t1 gc.Node
	if !l.Addable {
		gc.Tempname(&t1, l.Type)
		gc.Cgen(l, &t1)
		l = &t1
	}

	var hi1 gc.Node
	var lo1 gc.Node
	split64(l, &lo1, &hi1)
	switch n.Op {
	default:
		gc.Fatalf("cgen64 %v", gc.Oconv(int(n.Op), 0))

	case gc.OMINUS:
		var lo2 gc.Node
		var hi2 gc.Node
		split64(res, &lo2, &hi2)

		gc.Regalloc(&t1, lo1.Type, nil)
		var al gc.Node
		gc.Regalloc(&al, lo1.Type, nil)
		var ah gc.Node
		gc.Regalloc(&ah, hi1.Type, nil)

		gins(arm.AMOVW, &lo1, &al)
		gins(arm.AMOVW, &hi1, &ah)

		gmove(ncon(0), &t1)
		p1 := gins(arm.ASUB, &al, &t1)
		p1.Scond |= arm.C_SBIT
		gins(arm.AMOVW, &t1, &lo2)

		gmove(ncon(0), &t1)
		gins(arm.ASBC, &ah, &t1)
		gins(arm.AMOVW, &t1, &hi2)

		gc.Regfree(&t1)
		gc.Regfree(&al)
		gc.Regfree(&ah)
		splitclean()
		splitclean()
		return

	case gc.OCOM:
		gc.Regalloc(&t1, lo1.Type, nil)
		gmove(ncon(^uint32(0)), &t1)

		var lo2 gc.Node
		var hi2 gc.Node
		split64(res, &lo2, &hi2)
		var n1 gc.Node
		gc.Regalloc(&n1, lo1.Type, nil)

		gins(arm.AMOVW, &lo1, &n1)
		gins(arm.AEOR, &t1, &n1)
		gins(arm.AMOVW, &n1, &lo2)

		gins(arm.AMOVW, &hi1, &n1)
		gins(arm.AEOR, &t1, &n1)
		gins(arm.AMOVW, &n1, &hi2)

		gc.Regfree(&t1)
		gc.Regfree(&n1)
		splitclean()
		splitclean()
		return

		// binary operators.
	// common setup below.
	case gc.OADD,
		gc.OSUB,
		gc.OMUL,
		gc.OLSH,
		gc.ORSH,
		gc.OAND,
		gc.OOR,
		gc.OXOR,
		gc.OLROT:
		break
	}

	// setup for binary operators
	r := n.Right

	if r != nil && !r.Addable {
		var t2 gc.Node
		gc.Tempname(&t2, r.Type)
		gc.Cgen(r, &t2)
		r = &t2
	}

	var hi2 gc.Node
	var lo2 gc.Node
	if gc.Is64(r.Type) {
		split64(r, &lo2, &hi2)
	}

	var al gc.Node
	gc.Regalloc(&al, lo1.Type, nil)
	var ah gc.Node
	gc.Regalloc(&ah, hi1.Type, nil)

	// Do op.  Leave result in ah:al.
	switch n.Op {
	default:
		gc.Fatalf("cgen64: not implemented: %v\n", n)

		// TODO: Constants
	case gc.OADD:
		var bl gc.Node
		gc.Regalloc(&bl, gc.Types[gc.TPTR32], nil)

		var bh gc.Node
		gc.Regalloc(&bh, gc.Types[gc.TPTR32], nil)
		gins(arm.AMOVW, &hi1, &ah)
		gins(arm.AMOVW, &lo1, &al)
		gins(arm.AMOVW, &hi2, &bh)
		gins(arm.AMOVW, &lo2, &bl)
		p1 := gins(arm.AADD, &bl, &al)
		p1.Scond |= arm.C_SBIT
		gins(arm.AADC, &bh, &ah)
		gc.Regfree(&bl)
		gc.Regfree(&bh)

		// TODO: Constants.
	case gc.OSUB:
		var bl gc.Node
		gc.Regalloc(&bl, gc.Types[gc.TPTR32], nil)

		var bh gc.Node
		gc.Regalloc(&bh, gc.Types[gc.TPTR32], nil)
		gins(arm.AMOVW, &lo1, &al)
		gins(arm.AMOVW, &hi1, &ah)
		gins(arm.AMOVW, &lo2, &bl)
		gins(arm.AMOVW, &hi2, &bh)
		p1 := gins(arm.ASUB, &bl, &al)
		p1.Scond |= arm.C_SBIT
		gins(arm.ASBC, &bh, &ah)
		gc.Regfree(&bl)
		gc.Regfree(&bh)

		// TODO(kaib): this can be done with 4 regs and does not need 6
	case gc.OMUL:
		var bl gc.Node
		gc.Regalloc(&bl, gc.Types[gc.TPTR32], nil)

		var bh gc.Node
		gc.Regalloc(&bh, gc.Types[gc.TPTR32], nil)
		var cl gc.Node
		gc.Regalloc(&cl, gc.Types[gc.TPTR32], nil)
		var ch gc.Node
		gc.Regalloc(&ch, gc.Types[gc.TPTR32], nil)

		// load args into bh:bl and bh:bl.
		gins(arm.AMOVW, &hi1, &bh)

		gins(arm.AMOVW, &lo1, &bl)
		gins(arm.AMOVW, &hi2, &ch)
		gins(arm.AMOVW, &lo2, &cl)

		// bl * cl -> ah al
		p1 := gins(arm.AMULLU, nil, nil)

		p1.From.Type = obj.TYPE_REG
		p1.From.Reg = bl.Reg
		p1.Reg = cl.Reg
		p1.To.Type = obj.TYPE_REGREG
		p1.To.Reg = ah.Reg
		p1.To.Offset = int64(al.Reg)

		//print("%v\n", p1);

		// bl * ch + ah -> ah
		p1 = gins(arm.AMULA, nil, nil)

		p1.From.Type = obj.TYPE_REG
		p1.From.Reg = bl.Reg
		p1.Reg = ch.Reg
		p1.To.Type = obj.TYPE_REGREG2
		p1.To.Reg = ah.Reg
		p1.To.Offset = int64(ah.Reg)

		//print("%v\n", p1);

		// bh * cl + ah -> ah
		p1 = gins(arm.AMULA, nil, nil)

		p1.From.Type = obj.TYPE_REG
		p1.From.Reg = bh.Reg
		p1.Reg = cl.Reg
		p1.To.Type = obj.TYPE_REGREG2
		p1.To.Reg = ah.Reg
		p1.To.Offset = int64(ah.Reg)

		//print("%v\n", p1);

		gc.Regfree(&bh)

		gc.Regfree(&bl)
		gc.Regfree(&ch)
		gc.Regfree(&cl)

		// We only rotate by a constant c in [0,64).
	// if c >= 32:
	//	lo, hi = hi, lo
	//	c -= 32
	// if c == 0:
	//	no-op
	// else:
	//	t = hi
	//	shld hi:lo, c
	//	shld lo:t, c
	case gc.OLROT:
		v := uint64(r.Int())

		var bl gc.Node
		gc.Regalloc(&bl, lo1.Type, nil)
		var bh gc.Node
		gc.Regalloc(&bh, hi1.Type, nil)
		if v >= 32 {
			// reverse during load to do the first 32 bits of rotate
			v -= 32

			gins(arm.AMOVW, &hi1, &bl)
			gins(arm.AMOVW, &lo1, &bh)
		} else {
			gins(arm.AMOVW, &hi1, &bh)
			gins(arm.AMOVW, &lo1, &bl)
		}

		if v == 0 {
			gins(arm.AMOVW, &bh, &ah)
			gins(arm.AMOVW, &bl, &al)
		} else {
			// rotate by 1 <= v <= 31
			//	MOVW	bl<<v, al
			//	MOVW	bh<<v, ah
			//	OR		bl>>(32-v), ah
			//	OR		bh>>(32-v), al
			gshift(arm.AMOVW, &bl, arm.SHIFT_LL, int32(v), &al)

			gshift(arm.AMOVW, &bh, arm.SHIFT_LL, int32(v), &ah)
			gshift(arm.AORR, &bl, arm.SHIFT_LR, int32(32-v), &ah)
			gshift(arm.AORR, &bh, arm.SHIFT_LR, int32(32-v), &al)
		}

		gc.Regfree(&bl)
		gc.Regfree(&bh)

	case gc.OLSH:
		var bl gc.Node
		gc.Regalloc(&bl, lo1.Type, nil)
		var bh gc.Node
		gc.Regalloc(&bh, hi1.Type, nil)
		gins(arm.AMOVW, &hi1, &bh)
		gins(arm.AMOVW, &lo1, &bl)

		var p6 *obj.Prog
		var s gc.Node
		var n1 gc.Node
		var creg gc.Node
		var p1 *obj.Prog
		var p2 *obj.Prog
		var p3 *obj.Prog
		var p4 *obj.Prog
		var p5 *obj.Prog
		if r.Op == gc.OLITERAL {
			v := uint64(r.Int())
			if v >= 64 {
				// TODO(kaib): replace with gins(AMOVW, nodintconst(0), &al)
				// here and below (verify it optimizes to EOR)
				gins(arm.AEOR, &al, &al)

				gins(arm.AEOR, &ah, &ah)
			} else if v > 32 {
				gins(arm.AEOR, &al, &al)

				//	MOVW	bl<<(v-32), ah
				gshift(arm.AMOVW, &bl, arm.SHIFT_LL, int32(v-32), &ah)
			} else if v == 32 {
				gins(arm.AEOR, &al, &al)
				gins(arm.AMOVW, &bl, &ah)
			} else if v > 0 {
				//	MOVW	bl<<v, al
				gshift(arm.AMOVW, &bl, arm.SHIFT_LL, int32(v), &al)

				//	MOVW	bh<<v, ah
				gshift(arm.AMOVW, &bh, arm.SHIFT_LL, int32(v), &ah)

				//	OR		bl>>(32-v), ah
				gshift(arm.AORR, &bl, arm.SHIFT_LR, int32(32-v), &ah)
			} else {
				gins(arm.AMOVW, &bl, &al)
				gins(arm.AMOVW, &bh, &ah)
			}

			goto olsh_break
		}

		gc.Regalloc(&s, gc.Types[gc.TUINT32], nil)
		gc.Regalloc(&creg, gc.Types[gc.TUINT32], nil)
		if gc.Is64(r.Type) {
			// shift is >= 1<<32
			var cl gc.Node
			var ch gc.Node
			split64(r, &cl, &ch)

			gmove(&ch, &s)
			gins(arm.ATST, &s, nil)
			p6 = gc.Gbranch(arm.ABNE, nil, 0)
			gmove(&cl, &s)
			splitclean()
		} else {
			gmove(r, &s)
			p6 = nil
		}

		gins(arm.ATST, &s, nil)

		// shift == 0
		p1 = gins(arm.AMOVW, &bl, &al)

		p1.Scond = arm.C_SCOND_EQ
		p1 = gins(arm.AMOVW, &bh, &ah)
		p1.Scond = arm.C_SCOND_EQ
		p2 = gc.Gbranch(arm.ABEQ, nil, 0)

		// shift is < 32
		gc.Nodconst(&n1, gc.Types[gc.TUINT32], 32)

		gmove(&n1, &creg)
		gins(arm.ACMP, &s, &creg)

		//	MOVW.LO		bl<<s, al
		p1 = gregshift(arm.AMOVW, &bl, arm.SHIFT_LL, &s, &al)

		p1.Scond = arm.C_SCOND_LO

		//	MOVW.LO		bh<<s, ah
		p1 = gregshift(arm.AMOVW, &bh, arm.SHIFT_LL, &s, &ah)

		p1.Scond = arm.C_SCOND_LO

		//	SUB.LO		s, creg
		p1 = gins(arm.ASUB, &s, &creg)

		p1.Scond = arm.C_SCOND_LO

		//	OR.LO		bl>>creg, ah
		p1 = gregshift(arm.AORR, &bl, arm.SHIFT_LR, &creg, &ah)

		p1.Scond = arm.C_SCOND_LO

		//	BLO	end
		p3 = gc.Gbranch(arm.ABLO, nil, 0)

		// shift == 32
		p1 = gins(arm.AEOR, &al, &al)

		p1.Scond = arm.C_SCOND_EQ
		p1 = gins(arm.AMOVW, &bl, &ah)
		p1.Scond = arm.C_SCOND_EQ
		p4 = gc.Gbranch(arm.ABEQ, nil, 0)

		// shift is < 64
		gc.Nodconst(&n1, gc.Types[gc.TUINT32], 64)

		gmove(&n1, &creg)
		gins(arm.ACMP, &s, &creg)

		//	EOR.LO	al, al
		p1 = gins(arm.AEOR, &al, &al)

		p1.Scond = arm.C_SCOND_LO

		//	MOVW.LO		creg>>1, creg
		p1 = gshift(arm.AMOVW, &creg, arm.SHIFT_LR, 1, &creg)

		p1.Scond = arm.C_SCOND_LO

		//	SUB.LO		creg, s
		p1 = gins(arm.ASUB, &creg, &s)

		p1.Scond = arm.C_SCOND_LO

		//	MOVW	bl<<s, ah
		p1 = gregshift(arm.AMOVW, &bl, arm.SHIFT_LL, &s, &ah)

		p1.Scond = arm.C_SCOND_LO

		p5 = gc.Gbranch(arm.ABLO, nil, 0)

		// shift >= 64
		if p6 != nil {
			gc.Patch(p6, gc.Pc)
		}
		gins(arm.AEOR, &al, &al)
		gins(arm.AEOR, &ah, &ah)

		gc.Patch(p2, gc.Pc)
		gc.Patch(p3, gc.Pc)
		gc.Patch(p4, gc.Pc)
		gc.Patch(p5, gc.Pc)
		gc.Regfree(&s)
		gc.Regfree(&creg)

	olsh_break:
		gc.Regfree(&bl)
		gc.Regfree(&bh)

	case gc.ORSH:
		var bl gc.Node
		gc.Regalloc(&bl, lo1.Type, nil)
		var bh gc.Node
		gc.Regalloc(&bh, hi1.Type, nil)
		gins(arm.AMOVW, &hi1, &bh)
		gins(arm.AMOVW, &lo1, &bl)

		var p4 *obj.Prog
		var p5 *obj.Prog
		var n1 gc.Node
		var p6 *obj.Prog
		var s gc.Node
		var p1 *obj.Prog
		var p2 *obj.Prog
		var creg gc.Node
		var p3 *obj.Prog
		if r.Op == gc.OLITERAL {
			v := uint64(r.Int())
			if v >= 64 {
				if bh.Type.Etype == gc.TINT32 {
					//	MOVW	bh->31, al
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &al)

					//	MOVW	bh->31, ah
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &ah)
				} else {
					gins(arm.AEOR, &al, &al)
					gins(arm.AEOR, &ah, &ah)
				}
			} else if v > 32 {
				if bh.Type.Etype == gc.TINT32 {
					//	MOVW	bh->(v-32), al
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, int32(v-32), &al)

					//	MOVW	bh->31, ah
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &ah)
				} else {
					//	MOVW	bh>>(v-32), al
					gshift(arm.AMOVW, &bh, arm.SHIFT_LR, int32(v-32), &al)

					gins(arm.AEOR, &ah, &ah)
				}
			} else if v == 32 {
				gins(arm.AMOVW, &bh, &al)
				if bh.Type.Etype == gc.TINT32 {
					//	MOVW	bh->31, ah
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &ah)
				} else {
					gins(arm.AEOR, &ah, &ah)
				}
			} else if v > 0 {
				//	MOVW	bl>>v, al
				gshift(arm.AMOVW, &bl, arm.SHIFT_LR, int32(v), &al)

				//	OR		bh<<(32-v), al
				gshift(arm.AORR, &bh, arm.SHIFT_LL, int32(32-v), &al)

				if bh.Type.Etype == gc.TINT32 {
					//	MOVW	bh->v, ah
					gshift(arm.AMOVW, &bh, arm.SHIFT_AR, int32(v), &ah)
				} else {
					//	MOVW	bh>>v, ah
					gshift(arm.AMOVW, &bh, arm.SHIFT_LR, int32(v), &ah)
				}
			} else {
				gins(arm.AMOVW, &bl, &al)
				gins(arm.AMOVW, &bh, &ah)
			}

			goto orsh_break
		}

		gc.Regalloc(&s, gc.Types[gc.TUINT32], nil)
		gc.Regalloc(&creg, gc.Types[gc.TUINT32], nil)
		if gc.Is64(r.Type) {
			// shift is >= 1<<32
			var ch gc.Node
			var cl gc.Node
			split64(r, &cl, &ch)

			gmove(&ch, &s)
			gins(arm.ATST, &s, nil)
			var p1 *obj.Prog
			if bh.Type.Etype == gc.TINT32 {
				p1 = gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &ah)
			} else {
				p1 = gins(arm.AEOR, &ah, &ah)
			}
			p1.Scond = arm.C_SCOND_NE
			p6 = gc.Gbranch(arm.ABNE, nil, 0)
			gmove(&cl, &s)
			splitclean()
		} else {
			gmove(r, &s)
			p6 = nil
		}

		gins(arm.ATST, &s, nil)

		// shift == 0
		p1 = gins(arm.AMOVW, &bl, &al)

		p1.Scond = arm.C_SCOND_EQ
		p1 = gins(arm.AMOVW, &bh, &ah)
		p1.Scond = arm.C_SCOND_EQ
		p2 = gc.Gbranch(arm.ABEQ, nil, 0)

		// check if shift is < 32
		gc.Nodconst(&n1, gc.Types[gc.TUINT32], 32)

		gmove(&n1, &creg)
		gins(arm.ACMP, &s, &creg)

		//	MOVW.LO		bl>>s, al
		p1 = gregshift(arm.AMOVW, &bl, arm.SHIFT_LR, &s, &al)

		p1.Scond = arm.C_SCOND_LO

		//	SUB.LO		s,creg
		p1 = gins(arm.ASUB, &s, &creg)

		p1.Scond = arm.C_SCOND_LO

		//	OR.LO		bh<<(32-s), al
		p1 = gregshift(arm.AORR, &bh, arm.SHIFT_LL, &creg, &al)

		p1.Scond = arm.C_SCOND_LO

		if bh.Type.Etype == gc.TINT32 {
			//	MOVW	bh->s, ah
			p1 = gregshift(arm.AMOVW, &bh, arm.SHIFT_AR, &s, &ah)
		} else {
			//	MOVW	bh>>s, ah
			p1 = gregshift(arm.AMOVW, &bh, arm.SHIFT_LR, &s, &ah)
		}

		p1.Scond = arm.C_SCOND_LO

		//	BLO	end
		p3 = gc.Gbranch(arm.ABLO, nil, 0)

		// shift == 32
		p1 = gins(arm.AMOVW, &bh, &al)

		p1.Scond = arm.C_SCOND_EQ
		if bh.Type.Etype == gc.TINT32 {
			gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &ah)
		} else {
			gins(arm.AEOR, &ah, &ah)
		}
		p4 = gc.Gbranch(arm.ABEQ, nil, 0)

		// check if shift is < 64
		gc.Nodconst(&n1, gc.Types[gc.TUINT32], 64)

		gmove(&n1, &creg)
		gins(arm.ACMP, &s, &creg)

		//	MOVW.LO		creg>>1, creg
		p1 = gshift(arm.AMOVW, &creg, arm.SHIFT_LR, 1, &creg)

		p1.Scond = arm.C_SCOND_LO

		//	SUB.LO		creg, s
		p1 = gins(arm.ASUB, &creg, &s)

		p1.Scond = arm.C_SCOND_LO

		if bh.Type.Etype == gc.TINT32 {
			//	MOVW	bh->(s-32), al
			p1 := gregshift(arm.AMOVW, &bh, arm.SHIFT_AR, &s, &al)

			p1.Scond = arm.C_SCOND_LO
		} else {
			//	MOVW	bh>>(v-32), al
			p1 := gregshift(arm.AMOVW, &bh, arm.SHIFT_LR, &s, &al)

			p1.Scond = arm.C_SCOND_LO
		}

		//	BLO	end
		p5 = gc.Gbranch(arm.ABLO, nil, 0)

		// s >= 64
		if p6 != nil {
			gc.Patch(p6, gc.Pc)
		}
		if bh.Type.Etype == gc.TINT32 {
			//	MOVW	bh->31, al
			gshift(arm.AMOVW, &bh, arm.SHIFT_AR, 31, &al)
		} else {
			gins(arm.AEOR, &al, &al)
		}

		gc.Patch(p2, gc.Pc)
		gc.Patch(p3, gc.Pc)
		gc.Patch(p4, gc.Pc)
		gc.Patch(p5, gc.Pc)
		gc.Regfree(&s)
		gc.Regfree(&creg)

	orsh_break:
		gc.Regfree(&bl)
		gc.Regfree(&bh)

		// TODO(kaib): literal optimizations
	// make constant the right side (it usually is anyway).
	//		if(lo1.op == OLITERAL) {
	//			nswap(&lo1, &lo2);
	//			nswap(&hi1, &hi2);
	//		}
	//		if(lo2.op == OLITERAL) {
	//			// special cases for constants.
	//			lv = mpgetfix(lo2.val.u.xval);
	//			hv = mpgetfix(hi2.val.u.xval);
	//			splitclean();	// right side
	//			split64(res, &lo2, &hi2);
	//			switch(n->op) {
	//			case OXOR:
	//				gmove(&lo1, &lo2);
	//				gmove(&hi1, &hi2);
	//				switch(lv) {
	//				case 0:
	//					break;
	//				case 0xffffffffu:
	//					gins(ANOTL, N, &lo2);
	//					break;
	//				default:
	//					gins(AXORL, ncon(lv), &lo2);
	//					break;
	//				}
	//				switch(hv) {
	//				case 0:
	//					break;
	//				case 0xffffffffu:
	//					gins(ANOTL, N, &hi2);
	//					break;
	//				default:
	//					gins(AXORL, ncon(hv), &hi2);
	//					break;
	//				}
	//				break;

	//			case OAND:
	//				switch(lv) {
	//				case 0:
	//					gins(AMOVL, ncon(0), &lo2);
	//					break;
	//				default:
	//					gmove(&lo1, &lo2);
	//					if(lv != 0xffffffffu)
	//						gins(AANDL, ncon(lv), &lo2);
	//					break;
	//				}
	//				switch(hv) {
	//				case 0:
	//					gins(AMOVL, ncon(0), &hi2);
	//					break;
	//				default:
	//					gmove(&hi1, &hi2);
	//					if(hv != 0xffffffffu)
	//						gins(AANDL, ncon(hv), &hi2);
	//					break;
	//				}
	//				break;

	//			case OOR:
	//				switch(lv) {
	//				case 0:
	//					gmove(&lo1, &lo2);
	//					break;
	//				case 0xffffffffu:
	//					gins(AMOVL, ncon(0xffffffffu), &lo2);
	//					break;
	//				default:
	//					gmove(&lo1, &lo2);
	//					gins(AORL, ncon(lv), &lo2);
	//					break;
	//				}
	//				switch(hv) {
	//				case 0:
	//					gmove(&hi1, &hi2);
	//					break;
	//				case 0xffffffffu:
	//					gins(AMOVL, ncon(0xffffffffu), &hi2);
	//					break;
	//				default:
	//					gmove(&hi1, &hi2);
	//					gins(AORL, ncon(hv), &hi2);
	//					break;
	//				}
	//				break;
	//			}
	//			splitclean();
	//			splitclean();
	//			goto out;
	//		}
	case gc.OXOR,
		gc.OAND,
		gc.OOR:
		var n1 gc.Node
		gc.Regalloc(&n1, lo1.Type, nil)

		gins(arm.AMOVW, &lo1, &al)
		gins(arm.AMOVW, &hi1, &ah)
		gins(arm.AMOVW, &lo2, &n1)
		gins(optoas(n.Op, lo1.Type), &n1, &al)
		gins(arm.AMOVW, &hi2, &n1)
		gins(optoas(n.Op, lo1.Type), &n1, &ah)
		gc.Regfree(&n1)
	}

	if gc.Is64(r.Type) {
		splitclean()
	}
	splitclean()

	split64(res, &lo1, &hi1)
	gins(arm.AMOVW, &al, &lo1)
	gins(arm.AMOVW, &ah, &hi1)
	splitclean()

	//out:
	gc.Regfree(&al)

	gc.Regfree(&ah)
}
示例#7
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * return Axxx for Oxxx on type t.
 */
func optoas(op gc.Op, t *gc.Type) int {
	if t == nil {
		gc.Fatalf("optoas: t is nil")
	}

	// avoid constant conversions in switches below
	const (
		OMINUS_  = uint32(gc.OMINUS) << 16
		OLSH_    = uint32(gc.OLSH) << 16
		ORSH_    = uint32(gc.ORSH) << 16
		OADD_    = uint32(gc.OADD) << 16
		OSUB_    = uint32(gc.OSUB) << 16
		OMUL_    = uint32(gc.OMUL) << 16
		ODIV_    = uint32(gc.ODIV) << 16
		OMOD_    = uint32(gc.OMOD) << 16
		OOR_     = uint32(gc.OOR) << 16
		OAND_    = uint32(gc.OAND) << 16
		OXOR_    = uint32(gc.OXOR) << 16
		OEQ_     = uint32(gc.OEQ) << 16
		ONE_     = uint32(gc.ONE) << 16
		OLT_     = uint32(gc.OLT) << 16
		OLE_     = uint32(gc.OLE) << 16
		OGE_     = uint32(gc.OGE) << 16
		OGT_     = uint32(gc.OGT) << 16
		OCMP_    = uint32(gc.OCMP) << 16
		OPS_     = uint32(gc.OPS) << 16
		OPC_     = uint32(gc.OPC) << 16
		OAS_     = uint32(gc.OAS) << 16
		OHMUL_   = uint32(gc.OHMUL) << 16
		OSQRT_   = uint32(gc.OSQRT) << 16
		OADDR_   = uint32(gc.OADDR) << 16
		OINC_    = uint32(gc.OINC) << 16
		ODEC_    = uint32(gc.ODEC) << 16
		OLROT_   = uint32(gc.OLROT) << 16
		ORROTC_  = uint32(gc.ORROTC) << 16
		OEXTEND_ = uint32(gc.OEXTEND) << 16
	)

	a := obj.AXXX
	switch uint32(op)<<16 | uint32(gc.Simtype[t.Etype]) {
	default:
		gc.Fatalf("optoas: no entry %v-%v", gc.Oconv(int(op), 0), t)

	case OADDR_ | gc.TPTR32:
		a = x86.ALEAL

	case OADDR_ | gc.TPTR64:
		a = x86.ALEAQ

	case OEQ_ | gc.TBOOL,
		OEQ_ | gc.TINT8,
		OEQ_ | gc.TUINT8,
		OEQ_ | gc.TINT16,
		OEQ_ | gc.TUINT16,
		OEQ_ | gc.TINT32,
		OEQ_ | gc.TUINT32,
		OEQ_ | gc.TINT64,
		OEQ_ | gc.TUINT64,
		OEQ_ | gc.TPTR32,
		OEQ_ | gc.TPTR64,
		OEQ_ | gc.TFLOAT32,
		OEQ_ | gc.TFLOAT64:
		a = x86.AJEQ

	case ONE_ | gc.TBOOL,
		ONE_ | gc.TINT8,
		ONE_ | gc.TUINT8,
		ONE_ | gc.TINT16,
		ONE_ | gc.TUINT16,
		ONE_ | gc.TINT32,
		ONE_ | gc.TUINT32,
		ONE_ | gc.TINT64,
		ONE_ | gc.TUINT64,
		ONE_ | gc.TPTR32,
		ONE_ | gc.TPTR64,
		ONE_ | gc.TFLOAT32,
		ONE_ | gc.TFLOAT64:
		a = x86.AJNE

	case OPS_ | gc.TBOOL,
		OPS_ | gc.TINT8,
		OPS_ | gc.TUINT8,
		OPS_ | gc.TINT16,
		OPS_ | gc.TUINT16,
		OPS_ | gc.TINT32,
		OPS_ | gc.TUINT32,
		OPS_ | gc.TINT64,
		OPS_ | gc.TUINT64,
		OPS_ | gc.TPTR32,
		OPS_ | gc.TPTR64,
		OPS_ | gc.TFLOAT32,
		OPS_ | gc.TFLOAT64:
		a = x86.AJPS

	case OPC_ | gc.TBOOL,
		OPC_ | gc.TINT8,
		OPC_ | gc.TUINT8,
		OPC_ | gc.TINT16,
		OPC_ | gc.TUINT16,
		OPC_ | gc.TINT32,
		OPC_ | gc.TUINT32,
		OPC_ | gc.TINT64,
		OPC_ | gc.TUINT64,
		OPC_ | gc.TPTR32,
		OPC_ | gc.TPTR64,
		OPC_ | gc.TFLOAT32,
		OPC_ | gc.TFLOAT64:
		a = x86.AJPC

	case OLT_ | gc.TINT8,
		OLT_ | gc.TINT16,
		OLT_ | gc.TINT32,
		OLT_ | gc.TINT64:
		a = x86.AJLT

	case OLT_ | gc.TUINT8,
		OLT_ | gc.TUINT16,
		OLT_ | gc.TUINT32,
		OLT_ | gc.TUINT64:
		a = x86.AJCS

	case OLE_ | gc.TINT8,
		OLE_ | gc.TINT16,
		OLE_ | gc.TINT32,
		OLE_ | gc.TINT64:
		a = x86.AJLE

	case OLE_ | gc.TUINT8,
		OLE_ | gc.TUINT16,
		OLE_ | gc.TUINT32,
		OLE_ | gc.TUINT64:
		a = x86.AJLS

	case OGT_ | gc.TINT8,
		OGT_ | gc.TINT16,
		OGT_ | gc.TINT32,
		OGT_ | gc.TINT64:
		a = x86.AJGT

	case OGT_ | gc.TUINT8,
		OGT_ | gc.TUINT16,
		OGT_ | gc.TUINT32,
		OGT_ | gc.TUINT64,
		OLT_ | gc.TFLOAT32,
		OLT_ | gc.TFLOAT64:
		a = x86.AJHI

	case OGE_ | gc.TINT8,
		OGE_ | gc.TINT16,
		OGE_ | gc.TINT32,
		OGE_ | gc.TINT64:
		a = x86.AJGE

	case OGE_ | gc.TUINT8,
		OGE_ | gc.TUINT16,
		OGE_ | gc.TUINT32,
		OGE_ | gc.TUINT64,
		OLE_ | gc.TFLOAT32,
		OLE_ | gc.TFLOAT64:
		a = x86.AJCC

	case OCMP_ | gc.TBOOL,
		OCMP_ | gc.TINT8,
		OCMP_ | gc.TUINT8:
		a = x86.ACMPB

	case OCMP_ | gc.TINT16,
		OCMP_ | gc.TUINT16:
		a = x86.ACMPW

	case OCMP_ | gc.TINT32,
		OCMP_ | gc.TUINT32,
		OCMP_ | gc.TPTR32:
		a = x86.ACMPL

	case OCMP_ | gc.TINT64,
		OCMP_ | gc.TUINT64,
		OCMP_ | gc.TPTR64:
		a = x86.ACMPQ

	case OCMP_ | gc.TFLOAT32:
		a = x86.AUCOMISS

	case OCMP_ | gc.TFLOAT64:
		a = x86.AUCOMISD

	case OAS_ | gc.TBOOL,
		OAS_ | gc.TINT8,
		OAS_ | gc.TUINT8:
		a = x86.AMOVB

	case OAS_ | gc.TINT16,
		OAS_ | gc.TUINT16:
		a = x86.AMOVW

	case OAS_ | gc.TINT32,
		OAS_ | gc.TUINT32,
		OAS_ | gc.TPTR32:
		a = x86.AMOVL

	case OAS_ | gc.TINT64,
		OAS_ | gc.TUINT64,
		OAS_ | gc.TPTR64:
		a = x86.AMOVQ

	case OAS_ | gc.TFLOAT32:
		a = x86.AMOVSS

	case OAS_ | gc.TFLOAT64:
		a = x86.AMOVSD

	case OADD_ | gc.TINT8,
		OADD_ | gc.TUINT8:
		a = x86.AADDB

	case OADD_ | gc.TINT16,
		OADD_ | gc.TUINT16:
		a = x86.AADDW

	case OADD_ | gc.TINT32,
		OADD_ | gc.TUINT32,
		OADD_ | gc.TPTR32:
		a = x86.AADDL

	case OADD_ | gc.TINT64,
		OADD_ | gc.TUINT64,
		OADD_ | gc.TPTR64:
		a = x86.AADDQ

	case OADD_ | gc.TFLOAT32:
		a = x86.AADDSS

	case OADD_ | gc.TFLOAT64:
		a = x86.AADDSD

	case OSUB_ | gc.TINT8,
		OSUB_ | gc.TUINT8:
		a = x86.ASUBB

	case OSUB_ | gc.TINT16,
		OSUB_ | gc.TUINT16:
		a = x86.ASUBW

	case OSUB_ | gc.TINT32,
		OSUB_ | gc.TUINT32,
		OSUB_ | gc.TPTR32:
		a = x86.ASUBL

	case OSUB_ | gc.TINT64,
		OSUB_ | gc.TUINT64,
		OSUB_ | gc.TPTR64:
		a = x86.ASUBQ

	case OSUB_ | gc.TFLOAT32:
		a = x86.ASUBSS

	case OSUB_ | gc.TFLOAT64:
		a = x86.ASUBSD

	case OINC_ | gc.TINT8,
		OINC_ | gc.TUINT8:
		a = x86.AINCB

	case OINC_ | gc.TINT16,
		OINC_ | gc.TUINT16:
		a = x86.AINCW

	case OINC_ | gc.TINT32,
		OINC_ | gc.TUINT32,
		OINC_ | gc.TPTR32:
		a = x86.AINCL

	case OINC_ | gc.TINT64,
		OINC_ | gc.TUINT64,
		OINC_ | gc.TPTR64:
		a = x86.AINCQ

	case ODEC_ | gc.TINT8,
		ODEC_ | gc.TUINT8:
		a = x86.ADECB

	case ODEC_ | gc.TINT16,
		ODEC_ | gc.TUINT16:
		a = x86.ADECW

	case ODEC_ | gc.TINT32,
		ODEC_ | gc.TUINT32,
		ODEC_ | gc.TPTR32:
		a = x86.ADECL

	case ODEC_ | gc.TINT64,
		ODEC_ | gc.TUINT64,
		ODEC_ | gc.TPTR64:
		a = x86.ADECQ

	case OMINUS_ | gc.TINT8,
		OMINUS_ | gc.TUINT8:
		a = x86.ANEGB

	case OMINUS_ | gc.TINT16,
		OMINUS_ | gc.TUINT16:
		a = x86.ANEGW

	case OMINUS_ | gc.TINT32,
		OMINUS_ | gc.TUINT32,
		OMINUS_ | gc.TPTR32:
		a = x86.ANEGL

	case OMINUS_ | gc.TINT64,
		OMINUS_ | gc.TUINT64,
		OMINUS_ | gc.TPTR64:
		a = x86.ANEGQ

	case OAND_ | gc.TBOOL,
		OAND_ | gc.TINT8,
		OAND_ | gc.TUINT8:
		a = x86.AANDB

	case OAND_ | gc.TINT16,
		OAND_ | gc.TUINT16:
		a = x86.AANDW

	case OAND_ | gc.TINT32,
		OAND_ | gc.TUINT32,
		OAND_ | gc.TPTR32:
		a = x86.AANDL

	case OAND_ | gc.TINT64,
		OAND_ | gc.TUINT64,
		OAND_ | gc.TPTR64:
		a = x86.AANDQ

	case OOR_ | gc.TBOOL,
		OOR_ | gc.TINT8,
		OOR_ | gc.TUINT8:
		a = x86.AORB

	case OOR_ | gc.TINT16,
		OOR_ | gc.TUINT16:
		a = x86.AORW

	case OOR_ | gc.TINT32,
		OOR_ | gc.TUINT32,
		OOR_ | gc.TPTR32:
		a = x86.AORL

	case OOR_ | gc.TINT64,
		OOR_ | gc.TUINT64,
		OOR_ | gc.TPTR64:
		a = x86.AORQ

	case OXOR_ | gc.TINT8,
		OXOR_ | gc.TUINT8:
		a = x86.AXORB

	case OXOR_ | gc.TINT16,
		OXOR_ | gc.TUINT16:
		a = x86.AXORW

	case OXOR_ | gc.TINT32,
		OXOR_ | gc.TUINT32,
		OXOR_ | gc.TPTR32:
		a = x86.AXORL

	case OXOR_ | gc.TINT64,
		OXOR_ | gc.TUINT64,
		OXOR_ | gc.TPTR64:
		a = x86.AXORQ

	case OLROT_ | gc.TINT8,
		OLROT_ | gc.TUINT8:
		a = x86.AROLB

	case OLROT_ | gc.TINT16,
		OLROT_ | gc.TUINT16:
		a = x86.AROLW

	case OLROT_ | gc.TINT32,
		OLROT_ | gc.TUINT32,
		OLROT_ | gc.TPTR32:
		a = x86.AROLL

	case OLROT_ | gc.TINT64,
		OLROT_ | gc.TUINT64,
		OLROT_ | gc.TPTR64:
		a = x86.AROLQ

	case OLSH_ | gc.TINT8,
		OLSH_ | gc.TUINT8:
		a = x86.ASHLB

	case OLSH_ | gc.TINT16,
		OLSH_ | gc.TUINT16:
		a = x86.ASHLW

	case OLSH_ | gc.TINT32,
		OLSH_ | gc.TUINT32,
		OLSH_ | gc.TPTR32:
		a = x86.ASHLL

	case OLSH_ | gc.TINT64,
		OLSH_ | gc.TUINT64,
		OLSH_ | gc.TPTR64:
		a = x86.ASHLQ

	case ORSH_ | gc.TUINT8:
		a = x86.ASHRB

	case ORSH_ | gc.TUINT16:
		a = x86.ASHRW

	case ORSH_ | gc.TUINT32,
		ORSH_ | gc.TPTR32:
		a = x86.ASHRL

	case ORSH_ | gc.TUINT64,
		ORSH_ | gc.TPTR64:
		a = x86.ASHRQ

	case ORSH_ | gc.TINT8:
		a = x86.ASARB

	case ORSH_ | gc.TINT16:
		a = x86.ASARW

	case ORSH_ | gc.TINT32:
		a = x86.ASARL

	case ORSH_ | gc.TINT64:
		a = x86.ASARQ

	case ORROTC_ | gc.TINT8,
		ORROTC_ | gc.TUINT8:
		a = x86.ARCRB

	case ORROTC_ | gc.TINT16,
		ORROTC_ | gc.TUINT16:
		a = x86.ARCRW

	case ORROTC_ | gc.TINT32,
		ORROTC_ | gc.TUINT32:
		a = x86.ARCRL

	case ORROTC_ | gc.TINT64,
		ORROTC_ | gc.TUINT64:
		a = x86.ARCRQ

	case OHMUL_ | gc.TINT8,
		OMUL_ | gc.TINT8,
		OMUL_ | gc.TUINT8:
		a = x86.AIMULB

	case OHMUL_ | gc.TINT16,
		OMUL_ | gc.TINT16,
		OMUL_ | gc.TUINT16:
		a = x86.AIMULW

	case OHMUL_ | gc.TINT32,
		OMUL_ | gc.TINT32,
		OMUL_ | gc.TUINT32,
		OMUL_ | gc.TPTR32:
		a = x86.AIMULL

	case OHMUL_ | gc.TINT64,
		OMUL_ | gc.TINT64,
		OMUL_ | gc.TUINT64,
		OMUL_ | gc.TPTR64:
		a = x86.AIMULQ

	case OHMUL_ | gc.TUINT8:
		a = x86.AMULB

	case OHMUL_ | gc.TUINT16:
		a = x86.AMULW

	case OHMUL_ | gc.TUINT32,
		OHMUL_ | gc.TPTR32:
		a = x86.AMULL

	case OHMUL_ | gc.TUINT64,
		OHMUL_ | gc.TPTR64:
		a = x86.AMULQ

	case OMUL_ | gc.TFLOAT32:
		a = x86.AMULSS

	case OMUL_ | gc.TFLOAT64:
		a = x86.AMULSD

	case ODIV_ | gc.TINT8,
		OMOD_ | gc.TINT8:
		a = x86.AIDIVB

	case ODIV_ | gc.TUINT8,
		OMOD_ | gc.TUINT8:
		a = x86.ADIVB

	case ODIV_ | gc.TINT16,
		OMOD_ | gc.TINT16:
		a = x86.AIDIVW

	case ODIV_ | gc.TUINT16,
		OMOD_ | gc.TUINT16:
		a = x86.ADIVW

	case ODIV_ | gc.TINT32,
		OMOD_ | gc.TINT32:
		a = x86.AIDIVL

	case ODIV_ | gc.TUINT32,
		ODIV_ | gc.TPTR32,
		OMOD_ | gc.TUINT32,
		OMOD_ | gc.TPTR32:
		a = x86.ADIVL

	case ODIV_ | gc.TINT64,
		OMOD_ | gc.TINT64:
		a = x86.AIDIVQ

	case ODIV_ | gc.TUINT64,
		ODIV_ | gc.TPTR64,
		OMOD_ | gc.TUINT64,
		OMOD_ | gc.TPTR64:
		a = x86.ADIVQ

	case OEXTEND_ | gc.TINT16:
		a = x86.ACWD

	case OEXTEND_ | gc.TINT32:
		a = x86.ACDQ

	case OEXTEND_ | gc.TINT64:
		a = x86.ACQO

	case ODIV_ | gc.TFLOAT32:
		a = x86.ADIVSS

	case ODIV_ | gc.TFLOAT64:
		a = x86.ADIVSD

	case OSQRT_ | gc.TFLOAT64:
		a = x86.ASQRTSD
	}

	return a
}
示例#8
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * return Axxx for Oxxx on type t.
 */
func optoas(op gc.Op, t *gc.Type) int {
	if t == nil {
		gc.Fatalf("optoas: t is nil")
	}

	// avoid constant conversions in switches below
	const (
		OMINUS_ = uint32(gc.OMINUS) << 16
		OLSH_   = uint32(gc.OLSH) << 16
		ORSH_   = uint32(gc.ORSH) << 16
		OADD_   = uint32(gc.OADD) << 16
		OSUB_   = uint32(gc.OSUB) << 16
		OMUL_   = uint32(gc.OMUL) << 16
		ODIV_   = uint32(gc.ODIV) << 16
		OMOD_   = uint32(gc.OMOD) << 16
		OOR_    = uint32(gc.OOR) << 16
		OAND_   = uint32(gc.OAND) << 16
		OXOR_   = uint32(gc.OXOR) << 16
		OEQ_    = uint32(gc.OEQ) << 16
		ONE_    = uint32(gc.ONE) << 16
		OLT_    = uint32(gc.OLT) << 16
		OLE_    = uint32(gc.OLE) << 16
		OGE_    = uint32(gc.OGE) << 16
		OGT_    = uint32(gc.OGT) << 16
		OCMP_   = uint32(gc.OCMP) << 16
		OPS_    = uint32(gc.OPS) << 16
		OAS_    = uint32(gc.OAS) << 16
		OSQRT_  = uint32(gc.OSQRT) << 16
	)

	a := obj.AXXX
	switch uint32(op)<<16 | uint32(gc.Simtype[t.Etype]) {
	default:
		gc.Fatalf("optoas: no entry %v-%v etype %v simtype %v", gc.Oconv(int(op), 0), t, gc.Types[t.Etype], gc.Types[gc.Simtype[t.Etype]])

		/*	case CASE(OADDR, TPTR32):
				a = ALEAL;
				break;

			case CASE(OADDR, TPTR64):
				a = ALEAQ;
				break;
		*/
	// TODO(kaib): make sure the conditional branches work on all edge cases
	case OEQ_ | gc.TBOOL,
		OEQ_ | gc.TINT8,
		OEQ_ | gc.TUINT8,
		OEQ_ | gc.TINT16,
		OEQ_ | gc.TUINT16,
		OEQ_ | gc.TINT32,
		OEQ_ | gc.TUINT32,
		OEQ_ | gc.TINT64,
		OEQ_ | gc.TUINT64,
		OEQ_ | gc.TPTR32,
		OEQ_ | gc.TPTR64,
		OEQ_ | gc.TFLOAT32,
		OEQ_ | gc.TFLOAT64:
		a = arm.ABEQ

	case ONE_ | gc.TBOOL,
		ONE_ | gc.TINT8,
		ONE_ | gc.TUINT8,
		ONE_ | gc.TINT16,
		ONE_ | gc.TUINT16,
		ONE_ | gc.TINT32,
		ONE_ | gc.TUINT32,
		ONE_ | gc.TINT64,
		ONE_ | gc.TUINT64,
		ONE_ | gc.TPTR32,
		ONE_ | gc.TPTR64,
		ONE_ | gc.TFLOAT32,
		ONE_ | gc.TFLOAT64:
		a = arm.ABNE

	case OLT_ | gc.TINT8,
		OLT_ | gc.TINT16,
		OLT_ | gc.TINT32,
		OLT_ | gc.TINT64,
		OLT_ | gc.TFLOAT32,
		OLT_ | gc.TFLOAT64:
		a = arm.ABLT

	case OLT_ | gc.TUINT8,
		OLT_ | gc.TUINT16,
		OLT_ | gc.TUINT32,
		OLT_ | gc.TUINT64:
		a = arm.ABLO

	case OLE_ | gc.TINT8,
		OLE_ | gc.TINT16,
		OLE_ | gc.TINT32,
		OLE_ | gc.TINT64,
		OLE_ | gc.TFLOAT32,
		OLE_ | gc.TFLOAT64:
		a = arm.ABLE

	case OLE_ | gc.TUINT8,
		OLE_ | gc.TUINT16,
		OLE_ | gc.TUINT32,
		OLE_ | gc.TUINT64:
		a = arm.ABLS

	case OGT_ | gc.TINT8,
		OGT_ | gc.TINT16,
		OGT_ | gc.TINT32,
		OGT_ | gc.TINT64,
		OGT_ | gc.TFLOAT32,
		OGT_ | gc.TFLOAT64:
		a = arm.ABGT

	case OGT_ | gc.TUINT8,
		OGT_ | gc.TUINT16,
		OGT_ | gc.TUINT32,
		OGT_ | gc.TUINT64:
		a = arm.ABHI

	case OGE_ | gc.TINT8,
		OGE_ | gc.TINT16,
		OGE_ | gc.TINT32,
		OGE_ | gc.TINT64,
		OGE_ | gc.TFLOAT32,
		OGE_ | gc.TFLOAT64:
		a = arm.ABGE

	case OGE_ | gc.TUINT8,
		OGE_ | gc.TUINT16,
		OGE_ | gc.TUINT32,
		OGE_ | gc.TUINT64:
		a = arm.ABHS

	case OCMP_ | gc.TBOOL,
		OCMP_ | gc.TINT8,
		OCMP_ | gc.TUINT8,
		OCMP_ | gc.TINT16,
		OCMP_ | gc.TUINT16,
		OCMP_ | gc.TINT32,
		OCMP_ | gc.TUINT32,
		OCMP_ | gc.TPTR32:
		a = arm.ACMP

	case OCMP_ | gc.TFLOAT32:
		a = arm.ACMPF

	case OCMP_ | gc.TFLOAT64:
		a = arm.ACMPD

	case OPS_ | gc.TFLOAT32,
		OPS_ | gc.TFLOAT64:
		a = arm.ABVS

	case OAS_ | gc.TBOOL:
		a = arm.AMOVB

	case OAS_ | gc.TINT8:
		a = arm.AMOVBS

	case OAS_ | gc.TUINT8:
		a = arm.AMOVBU

	case OAS_ | gc.TINT16:
		a = arm.AMOVHS

	case OAS_ | gc.TUINT16:
		a = arm.AMOVHU

	case OAS_ | gc.TINT32,
		OAS_ | gc.TUINT32,
		OAS_ | gc.TPTR32:
		a = arm.AMOVW

	case OAS_ | gc.TFLOAT32:
		a = arm.AMOVF

	case OAS_ | gc.TFLOAT64:
		a = arm.AMOVD

	case OADD_ | gc.TINT8,
		OADD_ | gc.TUINT8,
		OADD_ | gc.TINT16,
		OADD_ | gc.TUINT16,
		OADD_ | gc.TINT32,
		OADD_ | gc.TUINT32,
		OADD_ | gc.TPTR32:
		a = arm.AADD

	case OADD_ | gc.TFLOAT32:
		a = arm.AADDF

	case OADD_ | gc.TFLOAT64:
		a = arm.AADDD

	case OSUB_ | gc.TINT8,
		OSUB_ | gc.TUINT8,
		OSUB_ | gc.TINT16,
		OSUB_ | gc.TUINT16,
		OSUB_ | gc.TINT32,
		OSUB_ | gc.TUINT32,
		OSUB_ | gc.TPTR32:
		a = arm.ASUB

	case OSUB_ | gc.TFLOAT32:
		a = arm.ASUBF

	case OSUB_ | gc.TFLOAT64:
		a = arm.ASUBD

	case OMINUS_ | gc.TINT8,
		OMINUS_ | gc.TUINT8,
		OMINUS_ | gc.TINT16,
		OMINUS_ | gc.TUINT16,
		OMINUS_ | gc.TINT32,
		OMINUS_ | gc.TUINT32,
		OMINUS_ | gc.TPTR32:
		a = arm.ARSB

	case OAND_ | gc.TINT8,
		OAND_ | gc.TUINT8,
		OAND_ | gc.TINT16,
		OAND_ | gc.TUINT16,
		OAND_ | gc.TINT32,
		OAND_ | gc.TUINT32,
		OAND_ | gc.TPTR32:
		a = arm.AAND

	case OOR_ | gc.TINT8,
		OOR_ | gc.TUINT8,
		OOR_ | gc.TINT16,
		OOR_ | gc.TUINT16,
		OOR_ | gc.TINT32,
		OOR_ | gc.TUINT32,
		OOR_ | gc.TPTR32:
		a = arm.AORR

	case OXOR_ | gc.TINT8,
		OXOR_ | gc.TUINT8,
		OXOR_ | gc.TINT16,
		OXOR_ | gc.TUINT16,
		OXOR_ | gc.TINT32,
		OXOR_ | gc.TUINT32,
		OXOR_ | gc.TPTR32:
		a = arm.AEOR

	case OLSH_ | gc.TINT8,
		OLSH_ | gc.TUINT8,
		OLSH_ | gc.TINT16,
		OLSH_ | gc.TUINT16,
		OLSH_ | gc.TINT32,
		OLSH_ | gc.TUINT32,
		OLSH_ | gc.TPTR32:
		a = arm.ASLL

	case ORSH_ | gc.TUINT8,
		ORSH_ | gc.TUINT16,
		ORSH_ | gc.TUINT32,
		ORSH_ | gc.TPTR32:
		a = arm.ASRL

	case ORSH_ | gc.TINT8,
		ORSH_ | gc.TINT16,
		ORSH_ | gc.TINT32:
		a = arm.ASRA

	case OMUL_ | gc.TUINT8,
		OMUL_ | gc.TUINT16,
		OMUL_ | gc.TUINT32,
		OMUL_ | gc.TPTR32:
		a = arm.AMULU

	case OMUL_ | gc.TINT8,
		OMUL_ | gc.TINT16,
		OMUL_ | gc.TINT32:
		a = arm.AMUL

	case OMUL_ | gc.TFLOAT32:
		a = arm.AMULF

	case OMUL_ | gc.TFLOAT64:
		a = arm.AMULD

	case ODIV_ | gc.TUINT8,
		ODIV_ | gc.TUINT16,
		ODIV_ | gc.TUINT32,
		ODIV_ | gc.TPTR32:
		a = arm.ADIVU

	case ODIV_ | gc.TINT8,
		ODIV_ | gc.TINT16,
		ODIV_ | gc.TINT32:
		a = arm.ADIV

	case OMOD_ | gc.TUINT8,
		OMOD_ | gc.TUINT16,
		OMOD_ | gc.TUINT32,
		OMOD_ | gc.TPTR32:
		a = arm.AMODU

	case OMOD_ | gc.TINT8,
		OMOD_ | gc.TINT16,
		OMOD_ | gc.TINT32:
		a = arm.AMOD

		//	case CASE(OEXTEND, TINT16):
	//		a = ACWD;
	//		break;

	//	case CASE(OEXTEND, TINT32):
	//		a = ACDQ;
	//		break;

	//	case CASE(OEXTEND, TINT64):
	//		a = ACQO;
	//		break;

	case ODIV_ | gc.TFLOAT32:
		a = arm.ADIVF

	case ODIV_ | gc.TFLOAT64:
		a = arm.ADIVD

	case OSQRT_ | gc.TFLOAT64:
		a = arm.ASQRTD
	}

	return a
}
示例#9
0
文件: gsubr.go 项目: ckeyer/gosrc
func foptoas(op gc.Op, t *gc.Type, flg int) int {
	a := obj.AXXX
	et := gc.Simtype[t.Etype]

	// avoid constant conversions in switches below
	const (
		OCMP_   = uint32(gc.OCMP) << 16
		OAS_    = uint32(gc.OAS) << 16
		OADD_   = uint32(gc.OADD) << 16
		OSUB_   = uint32(gc.OSUB) << 16
		OMUL_   = uint32(gc.OMUL) << 16
		ODIV_   = uint32(gc.ODIV) << 16
		OMINUS_ = uint32(gc.OMINUS) << 16
	)

	if !gc.Thearch.Use387 {
		switch uint32(op)<<16 | uint32(et) {
		default:
			gc.Fatalf("foptoas-sse: no entry %v-%v", gc.Oconv(int(op), 0), t)

		case OCMP_ | gc.TFLOAT32:
			a = x86.AUCOMISS

		case OCMP_ | gc.TFLOAT64:
			a = x86.AUCOMISD

		case OAS_ | gc.TFLOAT32:
			a = x86.AMOVSS

		case OAS_ | gc.TFLOAT64:
			a = x86.AMOVSD

		case OADD_ | gc.TFLOAT32:
			a = x86.AADDSS

		case OADD_ | gc.TFLOAT64:
			a = x86.AADDSD

		case OSUB_ | gc.TFLOAT32:
			a = x86.ASUBSS

		case OSUB_ | gc.TFLOAT64:
			a = x86.ASUBSD

		case OMUL_ | gc.TFLOAT32:
			a = x86.AMULSS

		case OMUL_ | gc.TFLOAT64:
			a = x86.AMULSD

		case ODIV_ | gc.TFLOAT32:
			a = x86.ADIVSS

		case ODIV_ | gc.TFLOAT64:
			a = x86.ADIVSD
		}

		return a
	}

	// If we need Fpop, it means we're working on
	// two different floating-point registers, not memory.
	// There the instruction only has a float64 form.
	if flg&Fpop != 0 {
		et = gc.TFLOAT64
	}

	// clear Frev if unneeded
	switch op {
	case gc.OADD,
		gc.OMUL:
		flg &^= Frev
	}

	switch uint32(op)<<16 | (uint32(et)<<8 | uint32(flg)) {
	case OADD_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFADDF

	case OADD_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFADDD

	case OADD_ | (gc.TFLOAT64<<8 | Fpop):
		return x86.AFADDDP

	case OSUB_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFSUBF

	case OSUB_ | (gc.TFLOAT32<<8 | Frev):
		return x86.AFSUBRF

	case OSUB_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFSUBD

	case OSUB_ | (gc.TFLOAT64<<8 | Frev):
		return x86.AFSUBRD

	case OSUB_ | (gc.TFLOAT64<<8 | Fpop):
		return x86.AFSUBDP

	case OSUB_ | (gc.TFLOAT64<<8 | (Fpop | Frev)):
		return x86.AFSUBRDP

	case OMUL_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFMULF

	case OMUL_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFMULD

	case OMUL_ | (gc.TFLOAT64<<8 | Fpop):
		return x86.AFMULDP

	case ODIV_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFDIVF

	case ODIV_ | (gc.TFLOAT32<<8 | Frev):
		return x86.AFDIVRF

	case ODIV_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFDIVD

	case ODIV_ | (gc.TFLOAT64<<8 | Frev):
		return x86.AFDIVRD

	case ODIV_ | (gc.TFLOAT64<<8 | Fpop):
		return x86.AFDIVDP

	case ODIV_ | (gc.TFLOAT64<<8 | (Fpop | Frev)):
		return x86.AFDIVRDP

	case OCMP_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFCOMF

	case OCMP_ | (gc.TFLOAT32<<8 | Fpop):
		return x86.AFCOMFP

	case OCMP_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFCOMD

	case OCMP_ | (gc.TFLOAT64<<8 | Fpop):
		return x86.AFCOMDP

	case OCMP_ | (gc.TFLOAT64<<8 | Fpop2):
		return x86.AFCOMDPP

	case OMINUS_ | (gc.TFLOAT32<<8 | 0):
		return x86.AFCHS

	case OMINUS_ | (gc.TFLOAT64<<8 | 0):
		return x86.AFCHS
	}

	gc.Fatalf("foptoas %v %v %#x", gc.Oconv(int(op), 0), t, flg)
	return 0
}
示例#10
0
文件: cgen64.go 项目: ckeyer/gosrc
/*
 * attempt to generate 64-bit
 *	res = n
 * return 1 on success, 0 if op not handled.
 */
func cgen64(n *gc.Node, res *gc.Node) {
	if res.Op != gc.OINDREG && res.Op != gc.ONAME {
		gc.Dump("n", n)
		gc.Dump("res", res)
		gc.Fatalf("cgen64 %v of %v", gc.Oconv(int(n.Op), 0), gc.Oconv(int(res.Op), 0))
	}

	switch n.Op {
	default:
		gc.Fatalf("cgen64 %v", gc.Oconv(int(n.Op), 0))

	case gc.OMINUS:
		gc.Cgen(n.Left, res)
		var hi1 gc.Node
		var lo1 gc.Node
		split64(res, &lo1, &hi1)
		gins(x86.ANEGL, nil, &lo1)
		gins(x86.AADCL, ncon(0), &hi1)
		gins(x86.ANEGL, nil, &hi1)
		splitclean()
		return

	case gc.OCOM:
		gc.Cgen(n.Left, res)
		var lo1 gc.Node
		var hi1 gc.Node
		split64(res, &lo1, &hi1)
		gins(x86.ANOTL, nil, &lo1)
		gins(x86.ANOTL, nil, &hi1)
		splitclean()
		return

		// binary operators.
	// common setup below.
	case gc.OADD,
		gc.OSUB,
		gc.OMUL,
		gc.OLROT,
		gc.OLSH,
		gc.ORSH,
		gc.OAND,
		gc.OOR,
		gc.OXOR:
		break
	}

	l := n.Left
	r := n.Right
	if !l.Addable {
		var t1 gc.Node
		gc.Tempname(&t1, l.Type)
		gc.Cgen(l, &t1)
		l = &t1
	}

	if r != nil && !r.Addable {
		var t2 gc.Node
		gc.Tempname(&t2, r.Type)
		gc.Cgen(r, &t2)
		r = &t2
	}

	var ax gc.Node
	gc.Nodreg(&ax, gc.Types[gc.TINT32], x86.REG_AX)
	var cx gc.Node
	gc.Nodreg(&cx, gc.Types[gc.TINT32], x86.REG_CX)
	var dx gc.Node
	gc.Nodreg(&dx, gc.Types[gc.TINT32], x86.REG_DX)

	// Setup for binary operation.
	var hi1 gc.Node
	var lo1 gc.Node
	split64(l, &lo1, &hi1)

	var lo2 gc.Node
	var hi2 gc.Node
	if gc.Is64(r.Type) {
		split64(r, &lo2, &hi2)
	}

	// Do op.  Leave result in DX:AX.
	switch n.Op {
	// TODO: Constants
	case gc.OADD:
		gins(x86.AMOVL, &lo1, &ax)

		gins(x86.AMOVL, &hi1, &dx)
		gins(x86.AADDL, &lo2, &ax)
		gins(x86.AADCL, &hi2, &dx)

		// TODO: Constants.
	case gc.OSUB:
		gins(x86.AMOVL, &lo1, &ax)

		gins(x86.AMOVL, &hi1, &dx)
		gins(x86.ASUBL, &lo2, &ax)
		gins(x86.ASBBL, &hi2, &dx)

	case gc.OMUL:
		// let's call the next three EX, FX and GX
		var ex, fx, gx gc.Node
		gc.Regalloc(&ex, gc.Types[gc.TPTR32], nil)
		gc.Regalloc(&fx, gc.Types[gc.TPTR32], nil)
		gc.Regalloc(&gx, gc.Types[gc.TPTR32], nil)

		// load args into DX:AX and EX:GX.
		gins(x86.AMOVL, &lo1, &ax)

		gins(x86.AMOVL, &hi1, &dx)
		gins(x86.AMOVL, &lo2, &gx)
		gins(x86.AMOVL, &hi2, &ex)

		// if DX and EX are zero, use 32 x 32 -> 64 unsigned multiply.
		gins(x86.AMOVL, &dx, &fx)

		gins(x86.AORL, &ex, &fx)
		p1 := gc.Gbranch(x86.AJNE, nil, 0)
		gins(x86.AMULL, &gx, nil) // implicit &ax
		p2 := gc.Gbranch(obj.AJMP, nil, 0)
		gc.Patch(p1, gc.Pc)

		// full 64x64 -> 64, from 32x32 -> 64.
		gins(x86.AIMULL, &gx, &dx)

		gins(x86.AMOVL, &ax, &fx)
		gins(x86.AIMULL, &ex, &fx)
		gins(x86.AADDL, &dx, &fx)
		gins(x86.AMOVL, &gx, &dx)
		gins(x86.AMULL, &dx, nil) // implicit &ax
		gins(x86.AADDL, &fx, &dx)
		gc.Patch(p2, gc.Pc)

		gc.Regfree(&ex)
		gc.Regfree(&fx)
		gc.Regfree(&gx)

	// We only rotate by a constant c in [0,64).
	// if c >= 32:
	//	lo, hi = hi, lo
	//	c -= 32
	// if c == 0:
	//	no-op
	// else:
	//	t = hi
	//	shld hi:lo, c
	//	shld lo:t, c
	case gc.OLROT:
		v := uint64(r.Int())

		if v >= 32 {
			// reverse during load to do the first 32 bits of rotate
			v -= 32

			gins(x86.AMOVL, &lo1, &dx)
			gins(x86.AMOVL, &hi1, &ax)
		} else {
			gins(x86.AMOVL, &lo1, &ax)
			gins(x86.AMOVL, &hi1, &dx)
		}

		if v == 0 {
		} else // done
		{
			gins(x86.AMOVL, &dx, &cx)
			p1 := gins(x86.ASHLL, ncon(uint32(v)), &dx)
			p1.From.Index = x86.REG_AX // double-width shift
			p1.From.Scale = 0
			p1 = gins(x86.ASHLL, ncon(uint32(v)), &ax)
			p1.From.Index = x86.REG_CX // double-width shift
			p1.From.Scale = 0
		}

	case gc.OLSH:
		if r.Op == gc.OLITERAL {
			v := uint64(r.Int())
			if v >= 64 {
				if gc.Is64(r.Type) {
					splitclean()
				}
				splitclean()
				split64(res, &lo2, &hi2)
				gins(x86.AMOVL, ncon(0), &lo2)
				gins(x86.AMOVL, ncon(0), &hi2)
				splitclean()
				return
			}

			if v >= 32 {
				if gc.Is64(r.Type) {
					splitclean()
				}
				split64(res, &lo2, &hi2)
				gmove(&lo1, &hi2)
				if v > 32 {
					gins(x86.ASHLL, ncon(uint32(v-32)), &hi2)
				}

				gins(x86.AMOVL, ncon(0), &lo2)
				splitclean()
				splitclean()
				return
			}

			// general shift
			gins(x86.AMOVL, &lo1, &ax)

			gins(x86.AMOVL, &hi1, &dx)
			p1 := gins(x86.ASHLL, ncon(uint32(v)), &dx)
			p1.From.Index = x86.REG_AX // double-width shift
			p1.From.Scale = 0
			gins(x86.ASHLL, ncon(uint32(v)), &ax)
			break
		}

		// load value into DX:AX.
		gins(x86.AMOVL, &lo1, &ax)

		gins(x86.AMOVL, &hi1, &dx)

		// load shift value into register.
		// if high bits are set, zero value.
		var p1 *obj.Prog

		if gc.Is64(r.Type) {
			gins(x86.ACMPL, &hi2, ncon(0))
			p1 = gc.Gbranch(x86.AJNE, nil, +1)
			gins(x86.AMOVL, &lo2, &cx)
		} else {
			cx.Type = gc.Types[gc.TUINT32]
			gmove(r, &cx)
		}

		// if shift count is >=64, zero value
		gins(x86.ACMPL, &cx, ncon(64))

		p2 := gc.Gbranch(optoas(gc.OLT, gc.Types[gc.TUINT32]), nil, +1)
		if p1 != nil {
			gc.Patch(p1, gc.Pc)
		}
		gins(x86.AXORL, &dx, &dx)
		gins(x86.AXORL, &ax, &ax)
		gc.Patch(p2, gc.Pc)

		// if shift count is >= 32, zero low.
		gins(x86.ACMPL, &cx, ncon(32))

		p1 = gc.Gbranch(optoas(gc.OLT, gc.Types[gc.TUINT32]), nil, +1)
		gins(x86.AMOVL, &ax, &dx)
		gins(x86.ASHLL, &cx, &dx) // SHLL only uses bottom 5 bits of count
		gins(x86.AXORL, &ax, &ax)
		p2 = gc.Gbranch(obj.AJMP, nil, 0)
		gc.Patch(p1, gc.Pc)

		// general shift
		p1 = gins(x86.ASHLL, &cx, &dx)

		p1.From.Index = x86.REG_AX // double-width shift
		p1.From.Scale = 0
		gins(x86.ASHLL, &cx, &ax)
		gc.Patch(p2, gc.Pc)

	case gc.ORSH:
		if r.Op == gc.OLITERAL {
			v := uint64(r.Int())
			if v >= 64 {
				if gc.Is64(r.Type) {
					splitclean()
				}
				splitclean()
				split64(res, &lo2, &hi2)
				if hi1.Type.Etype == gc.TINT32 {
					gmove(&hi1, &lo2)
					gins(x86.ASARL, ncon(31), &lo2)
					gmove(&hi1, &hi2)
					gins(x86.ASARL, ncon(31), &hi2)
				} else {
					gins(x86.AMOVL, ncon(0), &lo2)
					gins(x86.AMOVL, ncon(0), &hi2)
				}

				splitclean()
				return
			}

			if v >= 32 {
				if gc.Is64(r.Type) {
					splitclean()
				}
				split64(res, &lo2, &hi2)
				gmove(&hi1, &lo2)
				if v > 32 {
					gins(optoas(gc.ORSH, hi1.Type), ncon(uint32(v-32)), &lo2)
				}
				if hi1.Type.Etype == gc.TINT32 {
					gmove(&hi1, &hi2)
					gins(x86.ASARL, ncon(31), &hi2)
				} else {
					gins(x86.AMOVL, ncon(0), &hi2)
				}
				splitclean()
				splitclean()
				return
			}

			// general shift
			gins(x86.AMOVL, &lo1, &ax)

			gins(x86.AMOVL, &hi1, &dx)
			p1 := gins(x86.ASHRL, ncon(uint32(v)), &ax)
			p1.From.Index = x86.REG_DX // double-width shift
			p1.From.Scale = 0
			gins(optoas(gc.ORSH, hi1.Type), ncon(uint32(v)), &dx)
			break
		}

		// load value into DX:AX.
		gins(x86.AMOVL, &lo1, &ax)

		gins(x86.AMOVL, &hi1, &dx)

		// load shift value into register.
		// if high bits are set, zero value.
		var p1 *obj.Prog

		if gc.Is64(r.Type) {
			gins(x86.ACMPL, &hi2, ncon(0))
			p1 = gc.Gbranch(x86.AJNE, nil, +1)
			gins(x86.AMOVL, &lo2, &cx)
		} else {
			cx.Type = gc.Types[gc.TUINT32]
			gmove(r, &cx)
		}

		// if shift count is >=64, zero or sign-extend value
		gins(x86.ACMPL, &cx, ncon(64))

		p2 := gc.Gbranch(optoas(gc.OLT, gc.Types[gc.TUINT32]), nil, +1)
		if p1 != nil {
			gc.Patch(p1, gc.Pc)
		}
		if hi1.Type.Etype == gc.TINT32 {
			gins(x86.ASARL, ncon(31), &dx)
			gins(x86.AMOVL, &dx, &ax)
		} else {
			gins(x86.AXORL, &dx, &dx)
			gins(x86.AXORL, &ax, &ax)
		}

		gc.Patch(p2, gc.Pc)

		// if shift count is >= 32, sign-extend hi.
		gins(x86.ACMPL, &cx, ncon(32))

		p1 = gc.Gbranch(optoas(gc.OLT, gc.Types[gc.TUINT32]), nil, +1)
		gins(x86.AMOVL, &dx, &ax)
		if hi1.Type.Etype == gc.TINT32 {
			gins(x86.ASARL, &cx, &ax) // SARL only uses bottom 5 bits of count
			gins(x86.ASARL, ncon(31), &dx)
		} else {
			gins(x86.ASHRL, &cx, &ax)
			gins(x86.AXORL, &dx, &dx)
		}

		p2 = gc.Gbranch(obj.AJMP, nil, 0)
		gc.Patch(p1, gc.Pc)

		// general shift
		p1 = gins(x86.ASHRL, &cx, &ax)

		p1.From.Index = x86.REG_DX // double-width shift
		p1.From.Scale = 0
		gins(optoas(gc.ORSH, hi1.Type), &cx, &dx)
		gc.Patch(p2, gc.Pc)

		// make constant the right side (it usually is anyway).
	case gc.OXOR,
		gc.OAND,
		gc.OOR:
		if lo1.Op == gc.OLITERAL {
			nswap(&lo1, &lo2)
			nswap(&hi1, &hi2)
		}

		if lo2.Op == gc.OLITERAL {
			// special cases for constants.
			lv := uint32(lo2.Int())
			hv := uint32(hi2.Int())
			splitclean() // right side
			split64(res, &lo2, &hi2)
			switch n.Op {
			case gc.OXOR:
				gmove(&lo1, &lo2)
				gmove(&hi1, &hi2)
				switch lv {
				case 0:
					break

				case 0xffffffff:
					gins(x86.ANOTL, nil, &lo2)

				default:
					gins(x86.AXORL, ncon(lv), &lo2)
				}

				switch hv {
				case 0:
					break

				case 0xffffffff:
					gins(x86.ANOTL, nil, &hi2)

				default:
					gins(x86.AXORL, ncon(hv), &hi2)
				}

			case gc.OAND:
				switch lv {
				case 0:
					gins(x86.AMOVL, ncon(0), &lo2)

				default:
					gmove(&lo1, &lo2)
					if lv != 0xffffffff {
						gins(x86.AANDL, ncon(lv), &lo2)
					}
				}

				switch hv {
				case 0:
					gins(x86.AMOVL, ncon(0), &hi2)

				default:
					gmove(&hi1, &hi2)
					if hv != 0xffffffff {
						gins(x86.AANDL, ncon(hv), &hi2)
					}
				}

			case gc.OOR:
				switch lv {
				case 0:
					gmove(&lo1, &lo2)

				case 0xffffffff:
					gins(x86.AMOVL, ncon(0xffffffff), &lo2)

				default:
					gmove(&lo1, &lo2)
					gins(x86.AORL, ncon(lv), &lo2)
				}

				switch hv {
				case 0:
					gmove(&hi1, &hi2)

				case 0xffffffff:
					gins(x86.AMOVL, ncon(0xffffffff), &hi2)

				default:
					gmove(&hi1, &hi2)
					gins(x86.AORL, ncon(hv), &hi2)
				}
			}

			splitclean()
			splitclean()
			return
		}

		gins(x86.AMOVL, &lo1, &ax)
		gins(x86.AMOVL, &hi1, &dx)
		gins(optoas(n.Op, lo1.Type), &lo2, &ax)
		gins(optoas(n.Op, lo1.Type), &hi2, &dx)
	}

	if gc.Is64(r.Type) {
		splitclean()
	}
	splitclean()

	split64(res, &lo1, &hi1)
	gins(x86.AMOVL, &ax, &lo1)
	gins(x86.AMOVL, &dx, &hi1)
	splitclean()
}
示例#11
0
文件: gsubr.go 项目: ckeyer/gosrc
func ginscmp(op gc.Op, t *gc.Type, n1, n2 *gc.Node, likely int) *obj.Prog {
	if !gc.Isfloat[t.Etype] && (op == gc.OLT || op == gc.OGE) {
		// swap nodes to fit SGT instruction
		n1, n2 = n2, n1
	}
	if gc.Isfloat[t.Etype] && (op == gc.OLT || op == gc.OLE) {
		// swap nodes to fit CMPGT, CMPGE instructions and reverse relation
		n1, n2 = n2, n1
		if op == gc.OLT {
			op = gc.OGT
		} else {
			op = gc.OGE
		}
	}

	var r1, r2, g1, g2 gc.Node
	gc.Regalloc(&r1, t, n1)
	gc.Regalloc(&g1, n1.Type, &r1)
	gc.Cgen(n1, &g1)
	gmove(&g1, &r1)

	gc.Regalloc(&r2, t, n2)
	gc.Regalloc(&g2, n1.Type, &r2)
	gc.Cgen(n2, &g2)
	gmove(&g2, &r2)

	var p *obj.Prog
	var ntmp gc.Node
	gc.Nodreg(&ntmp, gc.Types[gc.TINT], mips.REGTMP)

	switch gc.Simtype[t.Etype] {
	case gc.TINT8,
		gc.TINT16,
		gc.TINT32,
		gc.TINT64:
		if op == gc.OEQ || op == gc.ONE {
			p = ginsbranch(optoas(op, t), nil, &r1, &r2, likely)
		} else {
			gins3(mips.ASGT, &r1, &r2, &ntmp)

			p = ginsbranch(optoas(op, t), nil, &ntmp, nil, likely)
		}

	case gc.TBOOL,
		gc.TUINT8,
		gc.TUINT16,
		gc.TUINT32,
		gc.TUINT64,
		gc.TPTR32,
		gc.TPTR64:
		if op == gc.OEQ || op == gc.ONE {
			p = ginsbranch(optoas(op, t), nil, &r1, &r2, likely)
		} else {
			gins3(mips.ASGTU, &r1, &r2, &ntmp)

			p = ginsbranch(optoas(op, t), nil, &ntmp, nil, likely)
		}

	case gc.TFLOAT32:
		switch op {
		default:
			gc.Fatalf("ginscmp: no entry for op=%v type=%v", gc.Oconv(int(op), 0), t)

		case gc.OEQ,
			gc.ONE:
			gins3(mips.ACMPEQF, &r1, &r2, nil)

		case gc.OGE:
			gins3(mips.ACMPGEF, &r1, &r2, nil)

		case gc.OGT:
			gins3(mips.ACMPGTF, &r1, &r2, nil)
		}
		p = gc.Gbranch(optoas(op, t), nil, likely)

	case gc.TFLOAT64:
		switch op {
		default:
			gc.Fatalf("ginscmp: no entry for op=%v type=%v", gc.Oconv(int(op), 0), t)

		case gc.OEQ,
			gc.ONE:
			gins3(mips.ACMPEQD, &r1, &r2, nil)

		case gc.OGE:
			gins3(mips.ACMPGED, &r1, &r2, nil)

		case gc.OGT:
			gins3(mips.ACMPGTD, &r1, &r2, nil)
		}
		p = gc.Gbranch(optoas(op, t), nil, likely)
	}

	gc.Regfree(&g2)
	gc.Regfree(&r2)
	gc.Regfree(&g1)
	gc.Regfree(&r1)

	return p
}
示例#12
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * return Axxx for Oxxx on type t.
 */
func optoas(op gc.Op, t *gc.Type) int {
	if t == nil {
		gc.Fatalf("optoas: t is nil")
	}

	// avoid constant conversions in switches below
	const (
		OMINUS_ = uint32(gc.OMINUS) << 16
		OLSH_   = uint32(gc.OLSH) << 16
		ORSH_   = uint32(gc.ORSH) << 16
		OADD_   = uint32(gc.OADD) << 16
		OSUB_   = uint32(gc.OSUB) << 16
		OMUL_   = uint32(gc.OMUL) << 16
		ODIV_   = uint32(gc.ODIV) << 16
		OOR_    = uint32(gc.OOR) << 16
		OAND_   = uint32(gc.OAND) << 16
		OXOR_   = uint32(gc.OXOR) << 16
		OEQ_    = uint32(gc.OEQ) << 16
		ONE_    = uint32(gc.ONE) << 16
		OLT_    = uint32(gc.OLT) << 16
		OLE_    = uint32(gc.OLE) << 16
		OGE_    = uint32(gc.OGE) << 16
		OGT_    = uint32(gc.OGT) << 16
		OCMP_   = uint32(gc.OCMP) << 16
		OAS_    = uint32(gc.OAS) << 16
		OHMUL_  = uint32(gc.OHMUL) << 16
	)

	a := int(obj.AXXX)
	switch uint32(op)<<16 | uint32(gc.Simtype[t.Etype]) {
	default:
		gc.Fatalf("optoas: no entry for op=%v type=%v", gc.Oconv(int(op), 0), t)

	case OEQ_ | gc.TBOOL,
		OEQ_ | gc.TINT8,
		OEQ_ | gc.TUINT8,
		OEQ_ | gc.TINT16,
		OEQ_ | gc.TUINT16,
		OEQ_ | gc.TINT32,
		OEQ_ | gc.TUINT32,
		OEQ_ | gc.TINT64,
		OEQ_ | gc.TUINT64,
		OEQ_ | gc.TPTR32,
		OEQ_ | gc.TPTR64:
		a = mips.ABEQ

	case OEQ_ | gc.TFLOAT32, // ACMPEQF
		OEQ_ | gc.TFLOAT64: // ACMPEQD
		a = mips.ABFPT

	case ONE_ | gc.TBOOL,
		ONE_ | gc.TINT8,
		ONE_ | gc.TUINT8,
		ONE_ | gc.TINT16,
		ONE_ | gc.TUINT16,
		ONE_ | gc.TINT32,
		ONE_ | gc.TUINT32,
		ONE_ | gc.TINT64,
		ONE_ | gc.TUINT64,
		ONE_ | gc.TPTR32,
		ONE_ | gc.TPTR64:
		a = mips.ABNE

	case ONE_ | gc.TFLOAT32, // ACMPEQF
		ONE_ | gc.TFLOAT64: // ACMPEQD
		a = mips.ABFPF

	case OLT_ | gc.TINT8, // ASGT
		OLT_ | gc.TINT16,
		OLT_ | gc.TINT32,
		OLT_ | gc.TINT64,
		OLT_ | gc.TUINT8, // ASGTU
		OLT_ | gc.TUINT16,
		OLT_ | gc.TUINT32,
		OLT_ | gc.TUINT64:
		a = mips.ABNE

	case OLT_ | gc.TFLOAT32, // ACMPGEF
		OLT_ | gc.TFLOAT64: // ACMPGED
		a = mips.ABFPT

	case OLE_ | gc.TINT8, // ASGT
		OLE_ | gc.TINT16,
		OLE_ | gc.TINT32,
		OLE_ | gc.TINT64,
		OLE_ | gc.TUINT8, // ASGTU
		OLE_ | gc.TUINT16,
		OLE_ | gc.TUINT32,
		OLE_ | gc.TUINT64:
		a = mips.ABEQ

	case OLE_ | gc.TFLOAT32, // ACMPGTF
		OLE_ | gc.TFLOAT64: // ACMPGTD
		a = mips.ABFPT

	case OGT_ | gc.TINT8, // ASGT
		OGT_ | gc.TINT16,
		OGT_ | gc.TINT32,
		OGT_ | gc.TINT64,
		OGT_ | gc.TUINT8, // ASGTU
		OGT_ | gc.TUINT16,
		OGT_ | gc.TUINT32,
		OGT_ | gc.TUINT64:
		a = mips.ABNE

	case OGT_ | gc.TFLOAT32, // ACMPGTF
		OGT_ | gc.TFLOAT64: // ACMPGTD
		a = mips.ABFPT

	case OGE_ | gc.TINT8, // ASGT
		OGE_ | gc.TINT16,
		OGE_ | gc.TINT32,
		OGE_ | gc.TINT64,
		OGE_ | gc.TUINT8, // ASGTU
		OGE_ | gc.TUINT16,
		OGE_ | gc.TUINT32,
		OGE_ | gc.TUINT64:
		a = mips.ABEQ

	case OGE_ | gc.TFLOAT32, // ACMPGEF
		OGE_ | gc.TFLOAT64: // ACMPGED
		a = mips.ABFPT

	case OAS_ | gc.TBOOL,
		OAS_ | gc.TINT8:
		a = mips.AMOVB

	case OAS_ | gc.TUINT8:
		a = mips.AMOVBU

	case OAS_ | gc.TINT16:
		a = mips.AMOVH

	case OAS_ | gc.TUINT16:
		a = mips.AMOVHU

	case OAS_ | gc.TINT32:
		a = mips.AMOVW

	case OAS_ | gc.TUINT32,
		OAS_ | gc.TPTR32:
		a = mips.AMOVWU

	case OAS_ | gc.TINT64,
		OAS_ | gc.TUINT64,
		OAS_ | gc.TPTR64:
		a = mips.AMOVV

	case OAS_ | gc.TFLOAT32:
		a = mips.AMOVF

	case OAS_ | gc.TFLOAT64:
		a = mips.AMOVD

	case OADD_ | gc.TINT8,
		OADD_ | gc.TUINT8,
		OADD_ | gc.TINT16,
		OADD_ | gc.TUINT16,
		OADD_ | gc.TINT32,
		OADD_ | gc.TUINT32,
		OADD_ | gc.TPTR32:
		a = mips.AADDU

	case OADD_ | gc.TINT64,
		OADD_ | gc.TUINT64,
		OADD_ | gc.TPTR64:
		a = mips.AADDVU

	case OADD_ | gc.TFLOAT32:
		a = mips.AADDF

	case OADD_ | gc.TFLOAT64:
		a = mips.AADDD

	case OSUB_ | gc.TINT8,
		OSUB_ | gc.TUINT8,
		OSUB_ | gc.TINT16,
		OSUB_ | gc.TUINT16,
		OSUB_ | gc.TINT32,
		OSUB_ | gc.TUINT32,
		OSUB_ | gc.TPTR32:
		a = mips.ASUBU

	case OSUB_ | gc.TINT64,
		OSUB_ | gc.TUINT64,
		OSUB_ | gc.TPTR64:
		a = mips.ASUBVU

	case OSUB_ | gc.TFLOAT32:
		a = mips.ASUBF

	case OSUB_ | gc.TFLOAT64:
		a = mips.ASUBD

	case OMINUS_ | gc.TINT8,
		OMINUS_ | gc.TUINT8,
		OMINUS_ | gc.TINT16,
		OMINUS_ | gc.TUINT16,
		OMINUS_ | gc.TINT32,
		OMINUS_ | gc.TUINT32,
		OMINUS_ | gc.TPTR32,
		OMINUS_ | gc.TINT64,
		OMINUS_ | gc.TUINT64,
		OMINUS_ | gc.TPTR64:
		a = mips.ASUBVU

	case OAND_ | gc.TINT8,
		OAND_ | gc.TUINT8,
		OAND_ | gc.TINT16,
		OAND_ | gc.TUINT16,
		OAND_ | gc.TINT32,
		OAND_ | gc.TUINT32,
		OAND_ | gc.TPTR32,
		OAND_ | gc.TINT64,
		OAND_ | gc.TUINT64,
		OAND_ | gc.TPTR64:
		a = mips.AAND

	case OOR_ | gc.TINT8,
		OOR_ | gc.TUINT8,
		OOR_ | gc.TINT16,
		OOR_ | gc.TUINT16,
		OOR_ | gc.TINT32,
		OOR_ | gc.TUINT32,
		OOR_ | gc.TPTR32,
		OOR_ | gc.TINT64,
		OOR_ | gc.TUINT64,
		OOR_ | gc.TPTR64:
		a = mips.AOR

	case OXOR_ | gc.TINT8,
		OXOR_ | gc.TUINT8,
		OXOR_ | gc.TINT16,
		OXOR_ | gc.TUINT16,
		OXOR_ | gc.TINT32,
		OXOR_ | gc.TUINT32,
		OXOR_ | gc.TPTR32,
		OXOR_ | gc.TINT64,
		OXOR_ | gc.TUINT64,
		OXOR_ | gc.TPTR64:
		a = mips.AXOR

		// TODO(minux): handle rotates
	//case CASE(OLROT, TINT8):
	//case CASE(OLROT, TUINT8):
	//case CASE(OLROT, TINT16):
	//case CASE(OLROT, TUINT16):
	//case CASE(OLROT, TINT32):
	//case CASE(OLROT, TUINT32):
	//case CASE(OLROT, TPTR32):
	//case CASE(OLROT, TINT64):
	//case CASE(OLROT, TUINT64):
	//case CASE(OLROT, TPTR64):
	//	a = 0//???; RLDC?
	//	break;

	case OLSH_ | gc.TINT8,
		OLSH_ | gc.TUINT8,
		OLSH_ | gc.TINT16,
		OLSH_ | gc.TUINT16,
		OLSH_ | gc.TINT32,
		OLSH_ | gc.TUINT32,
		OLSH_ | gc.TPTR32,
		OLSH_ | gc.TINT64,
		OLSH_ | gc.TUINT64,
		OLSH_ | gc.TPTR64:
		a = mips.ASLLV

	case ORSH_ | gc.TUINT8,
		ORSH_ | gc.TUINT16,
		ORSH_ | gc.TUINT32,
		ORSH_ | gc.TPTR32,
		ORSH_ | gc.TUINT64,
		ORSH_ | gc.TPTR64:
		a = mips.ASRLV

	case ORSH_ | gc.TINT8,
		ORSH_ | gc.TINT16,
		ORSH_ | gc.TINT32,
		ORSH_ | gc.TINT64:
		a = mips.ASRAV

		// TODO(minux): handle rotates
	//case CASE(ORROTC, TINT8):
	//case CASE(ORROTC, TUINT8):
	//case CASE(ORROTC, TINT16):
	//case CASE(ORROTC, TUINT16):
	//case CASE(ORROTC, TINT32):
	//case CASE(ORROTC, TUINT32):
	//case CASE(ORROTC, TINT64):
	//case CASE(ORROTC, TUINT64):
	//	a = 0//??? RLDC??
	//	break;

	case OHMUL_ | gc.TINT64:
		a = mips.AMULV

	case OHMUL_ | gc.TUINT64,
		OHMUL_ | gc.TPTR64:
		a = mips.AMULVU

	case OMUL_ | gc.TINT8,
		OMUL_ | gc.TINT16,
		OMUL_ | gc.TINT32,
		OMUL_ | gc.TINT64:
		a = mips.AMULV

	case OMUL_ | gc.TUINT8,
		OMUL_ | gc.TUINT16,
		OMUL_ | gc.TUINT32,
		OMUL_ | gc.TPTR32,
		OMUL_ | gc.TUINT64,
		OMUL_ | gc.TPTR64:
		a = mips.AMULVU

	case OMUL_ | gc.TFLOAT32:
		a = mips.AMULF

	case OMUL_ | gc.TFLOAT64:
		a = mips.AMULD

	case ODIV_ | gc.TINT8,
		ODIV_ | gc.TINT16,
		ODIV_ | gc.TINT32,
		ODIV_ | gc.TINT64:
		a = mips.ADIVV

	case ODIV_ | gc.TUINT8,
		ODIV_ | gc.TUINT16,
		ODIV_ | gc.TUINT32,
		ODIV_ | gc.TPTR32,
		ODIV_ | gc.TUINT64,
		ODIV_ | gc.TPTR64:
		a = mips.ADIVVU

	case ODIV_ | gc.TFLOAT32:
		a = mips.ADIVF

	case ODIV_ | gc.TFLOAT64:
		a = mips.ADIVD
	}

	return a
}
示例#13
0
文件: gsubr.go 项目: ckeyer/gosrc
/*
 * return Axxx for Oxxx on type t.
 */
func optoas(op gc.Op, t *gc.Type) int {
	if t == nil {
		gc.Fatalf("optoas: t is nil")
	}

	// avoid constant conversions in switches below
	const (
		OMINUS_ = uint32(gc.OMINUS) << 16
		OLSH_   = uint32(gc.OLSH) << 16
		ORSH_   = uint32(gc.ORSH) << 16
		OADD_   = uint32(gc.OADD) << 16
		OSUB_   = uint32(gc.OSUB) << 16
		OMUL_   = uint32(gc.OMUL) << 16
		ODIV_   = uint32(gc.ODIV) << 16
		OOR_    = uint32(gc.OOR) << 16
		OAND_   = uint32(gc.OAND) << 16
		OXOR_   = uint32(gc.OXOR) << 16
		OEQ_    = uint32(gc.OEQ) << 16
		ONE_    = uint32(gc.ONE) << 16
		OLT_    = uint32(gc.OLT) << 16
		OLE_    = uint32(gc.OLE) << 16
		OGE_    = uint32(gc.OGE) << 16
		OGT_    = uint32(gc.OGT) << 16
		OCMP_   = uint32(gc.OCMP) << 16
		OAS_    = uint32(gc.OAS) << 16
		OHMUL_  = uint32(gc.OHMUL) << 16
		OSQRT_  = uint32(gc.OSQRT) << 16
	)

	a := int(obj.AXXX)
	switch uint32(op)<<16 | uint32(gc.Simtype[t.Etype]) {
	default:
		gc.Fatalf("optoas: no entry for op=%v type=%v", gc.Oconv(int(op), 0), t)

	case OEQ_ | gc.TBOOL,
		OEQ_ | gc.TINT8,
		OEQ_ | gc.TUINT8,
		OEQ_ | gc.TINT16,
		OEQ_ | gc.TUINT16,
		OEQ_ | gc.TINT32,
		OEQ_ | gc.TUINT32,
		OEQ_ | gc.TINT64,
		OEQ_ | gc.TUINT64,
		OEQ_ | gc.TPTR32,
		OEQ_ | gc.TPTR64,
		OEQ_ | gc.TFLOAT32,
		OEQ_ | gc.TFLOAT64:
		a = arm64.ABEQ

	case ONE_ | gc.TBOOL,
		ONE_ | gc.TINT8,
		ONE_ | gc.TUINT8,
		ONE_ | gc.TINT16,
		ONE_ | gc.TUINT16,
		ONE_ | gc.TINT32,
		ONE_ | gc.TUINT32,
		ONE_ | gc.TINT64,
		ONE_ | gc.TUINT64,
		ONE_ | gc.TPTR32,
		ONE_ | gc.TPTR64,
		ONE_ | gc.TFLOAT32,
		ONE_ | gc.TFLOAT64:
		a = arm64.ABNE

	case OLT_ | gc.TINT8,
		OLT_ | gc.TINT16,
		OLT_ | gc.TINT32,
		OLT_ | gc.TINT64:
		a = arm64.ABLT

	case OLT_ | gc.TUINT8,
		OLT_ | gc.TUINT16,
		OLT_ | gc.TUINT32,
		OLT_ | gc.TUINT64,
		OLT_ | gc.TFLOAT32,
		OLT_ | gc.TFLOAT64:
		a = arm64.ABLO

	case OLE_ | gc.TINT8,
		OLE_ | gc.TINT16,
		OLE_ | gc.TINT32,
		OLE_ | gc.TINT64:
		a = arm64.ABLE

	case OLE_ | gc.TUINT8,
		OLE_ | gc.TUINT16,
		OLE_ | gc.TUINT32,
		OLE_ | gc.TUINT64,
		OLE_ | gc.TFLOAT32,
		OLE_ | gc.TFLOAT64:
		a = arm64.ABLS

	case OGT_ | gc.TINT8,
		OGT_ | gc.TINT16,
		OGT_ | gc.TINT32,
		OGT_ | gc.TINT64,
		OGT_ | gc.TFLOAT32,
		OGT_ | gc.TFLOAT64:
		a = arm64.ABGT

	case OGT_ | gc.TUINT8,
		OGT_ | gc.TUINT16,
		OGT_ | gc.TUINT32,
		OGT_ | gc.TUINT64:
		a = arm64.ABHI

	case OGE_ | gc.TINT8,
		OGE_ | gc.TINT16,
		OGE_ | gc.TINT32,
		OGE_ | gc.TINT64,
		OGE_ | gc.TFLOAT32,
		OGE_ | gc.TFLOAT64:
		a = arm64.ABGE

	case OGE_ | gc.TUINT8,
		OGE_ | gc.TUINT16,
		OGE_ | gc.TUINT32,
		OGE_ | gc.TUINT64:
		a = arm64.ABHS

	case OCMP_ | gc.TBOOL,
		OCMP_ | gc.TINT8,
		OCMP_ | gc.TINT16,
		OCMP_ | gc.TINT32,
		OCMP_ | gc.TPTR32,
		OCMP_ | gc.TINT64,
		OCMP_ | gc.TUINT8,
		OCMP_ | gc.TUINT16,
		OCMP_ | gc.TUINT32,
		OCMP_ | gc.TUINT64,
		OCMP_ | gc.TPTR64:
		a = arm64.ACMP

	case OCMP_ | gc.TFLOAT32:
		a = arm64.AFCMPS

	case OCMP_ | gc.TFLOAT64:
		a = arm64.AFCMPD

	case OAS_ | gc.TBOOL,
		OAS_ | gc.TINT8:
		a = arm64.AMOVB

	case OAS_ | gc.TUINT8:
		a = arm64.AMOVBU

	case OAS_ | gc.TINT16:
		a = arm64.AMOVH

	case OAS_ | gc.TUINT16:
		a = arm64.AMOVHU

	case OAS_ | gc.TINT32:
		a = arm64.AMOVW

	case OAS_ | gc.TUINT32,
		OAS_ | gc.TPTR32:
		a = arm64.AMOVWU

	case OAS_ | gc.TINT64,
		OAS_ | gc.TUINT64,
		OAS_ | gc.TPTR64:
		a = arm64.AMOVD

	case OAS_ | gc.TFLOAT32:
		a = arm64.AFMOVS

	case OAS_ | gc.TFLOAT64:
		a = arm64.AFMOVD

	case OADD_ | gc.TINT8,
		OADD_ | gc.TUINT8,
		OADD_ | gc.TINT16,
		OADD_ | gc.TUINT16,
		OADD_ | gc.TINT32,
		OADD_ | gc.TUINT32,
		OADD_ | gc.TPTR32,
		OADD_ | gc.TINT64,
		OADD_ | gc.TUINT64,
		OADD_ | gc.TPTR64:
		a = arm64.AADD

	case OADD_ | gc.TFLOAT32:
		a = arm64.AFADDS

	case OADD_ | gc.TFLOAT64:
		a = arm64.AFADDD

	case OSUB_ | gc.TINT8,
		OSUB_ | gc.TUINT8,
		OSUB_ | gc.TINT16,
		OSUB_ | gc.TUINT16,
		OSUB_ | gc.TINT32,
		OSUB_ | gc.TUINT32,
		OSUB_ | gc.TPTR32,
		OSUB_ | gc.TINT64,
		OSUB_ | gc.TUINT64,
		OSUB_ | gc.TPTR64:
		a = arm64.ASUB

	case OSUB_ | gc.TFLOAT32:
		a = arm64.AFSUBS

	case OSUB_ | gc.TFLOAT64:
		a = arm64.AFSUBD

	case OMINUS_ | gc.TINT8,
		OMINUS_ | gc.TUINT8,
		OMINUS_ | gc.TINT16,
		OMINUS_ | gc.TUINT16,
		OMINUS_ | gc.TINT32,
		OMINUS_ | gc.TUINT32,
		OMINUS_ | gc.TPTR32,
		OMINUS_ | gc.TINT64,
		OMINUS_ | gc.TUINT64,
		OMINUS_ | gc.TPTR64:
		a = arm64.ANEG

	case OMINUS_ | gc.TFLOAT32:
		a = arm64.AFNEGS

	case OMINUS_ | gc.TFLOAT64:
		a = arm64.AFNEGD

	case OAND_ | gc.TINT8,
		OAND_ | gc.TUINT8,
		OAND_ | gc.TINT16,
		OAND_ | gc.TUINT16,
		OAND_ | gc.TINT32,
		OAND_ | gc.TUINT32,
		OAND_ | gc.TPTR32,
		OAND_ | gc.TINT64,
		OAND_ | gc.TUINT64,
		OAND_ | gc.TPTR64:
		a = arm64.AAND

	case OOR_ | gc.TINT8,
		OOR_ | gc.TUINT8,
		OOR_ | gc.TINT16,
		OOR_ | gc.TUINT16,
		OOR_ | gc.TINT32,
		OOR_ | gc.TUINT32,
		OOR_ | gc.TPTR32,
		OOR_ | gc.TINT64,
		OOR_ | gc.TUINT64,
		OOR_ | gc.TPTR64:
		a = arm64.AORR

	case OXOR_ | gc.TINT8,
		OXOR_ | gc.TUINT8,
		OXOR_ | gc.TINT16,
		OXOR_ | gc.TUINT16,
		OXOR_ | gc.TINT32,
		OXOR_ | gc.TUINT32,
		OXOR_ | gc.TPTR32,
		OXOR_ | gc.TINT64,
		OXOR_ | gc.TUINT64,
		OXOR_ | gc.TPTR64:
		a = arm64.AEOR

		// TODO(minux): handle rotates
	//case CASE(OLROT, TINT8):
	//case CASE(OLROT, TUINT8):
	//case CASE(OLROT, TINT16):
	//case CASE(OLROT, TUINT16):
	//case CASE(OLROT, TINT32):
	//case CASE(OLROT, TUINT32):
	//case CASE(OLROT, TPTR32):
	//case CASE(OLROT, TINT64):
	//case CASE(OLROT, TUINT64):
	//case CASE(OLROT, TPTR64):
	//	a = 0//???; RLDC?
	//	break;

	case OLSH_ | gc.TINT8,
		OLSH_ | gc.TUINT8,
		OLSH_ | gc.TINT16,
		OLSH_ | gc.TUINT16,
		OLSH_ | gc.TINT32,
		OLSH_ | gc.TUINT32,
		OLSH_ | gc.TPTR32,
		OLSH_ | gc.TINT64,
		OLSH_ | gc.TUINT64,
		OLSH_ | gc.TPTR64:
		a = arm64.ALSL

	case ORSH_ | gc.TUINT8,
		ORSH_ | gc.TUINT16,
		ORSH_ | gc.TUINT32,
		ORSH_ | gc.TPTR32,
		ORSH_ | gc.TUINT64,
		ORSH_ | gc.TPTR64:
		a = arm64.ALSR

	case ORSH_ | gc.TINT8,
		ORSH_ | gc.TINT16,
		ORSH_ | gc.TINT32,
		ORSH_ | gc.TINT64:
		a = arm64.AASR

		// TODO(minux): handle rotates
	//case CASE(ORROTC, TINT8):
	//case CASE(ORROTC, TUINT8):
	//case CASE(ORROTC, TINT16):
	//case CASE(ORROTC, TUINT16):
	//case CASE(ORROTC, TINT32):
	//case CASE(ORROTC, TUINT32):
	//case CASE(ORROTC, TINT64):
	//case CASE(ORROTC, TUINT64):
	//	a = 0//??? RLDC??
	//	break;

	case OHMUL_ | gc.TINT64:
		a = arm64.ASMULH

	case OHMUL_ | gc.TUINT64,
		OHMUL_ | gc.TPTR64:
		a = arm64.AUMULH

	case OMUL_ | gc.TINT8,
		OMUL_ | gc.TINT16,
		OMUL_ | gc.TINT32:
		a = arm64.ASMULL

	case OMUL_ | gc.TINT64:
		a = arm64.AMUL

	case OMUL_ | gc.TUINT8,
		OMUL_ | gc.TUINT16,
		OMUL_ | gc.TUINT32,
		OMUL_ | gc.TPTR32:
		// don't use word multiply, the high 32-bit are undefined.
		a = arm64.AUMULL

	case OMUL_ | gc.TUINT64,
		OMUL_ | gc.TPTR64:
		a = arm64.AMUL // for 64-bit multiplies, signedness doesn't matter.

	case OMUL_ | gc.TFLOAT32:
		a = arm64.AFMULS

	case OMUL_ | gc.TFLOAT64:
		a = arm64.AFMULD

	case ODIV_ | gc.TINT8,
		ODIV_ | gc.TINT16,
		ODIV_ | gc.TINT32,
		ODIV_ | gc.TINT64:
		a = arm64.ASDIV

	case ODIV_ | gc.TUINT8,
		ODIV_ | gc.TUINT16,
		ODIV_ | gc.TUINT32,
		ODIV_ | gc.TPTR32,
		ODIV_ | gc.TUINT64,
		ODIV_ | gc.TPTR64:
		a = arm64.AUDIV

	case ODIV_ | gc.TFLOAT32:
		a = arm64.AFDIVS

	case ODIV_ | gc.TFLOAT64:
		a = arm64.AFDIVD

	case OSQRT_ | gc.TFLOAT64:
		a = arm64.AFSQRTD
	}

	return a
}
示例#14
0
文件: ggen.go 项目: ckeyer/gosrc
func cgen_floatsse(n *gc.Node, res *gc.Node) {
	var a int

	nl := n.Left
	nr := n.Right
	switch n.Op {
	default:
		gc.Dump("cgen_floatsse", n)
		gc.Fatalf("cgen_floatsse %v", gc.Oconv(int(n.Op), 0))
		return

	case gc.OMINUS,
		gc.OCOM:
		nr = gc.Nodintconst(-1)
		gc.Convlit(&nr, n.Type)
		a = foptoas(gc.OMUL, nl.Type, 0)
		goto sbop

		// symmetric binary
	case gc.OADD,
		gc.OMUL:
		a = foptoas(n.Op, nl.Type, 0)

		goto sbop

		// asymmetric binary
	case gc.OSUB,
		gc.OMOD,
		gc.ODIV:
		a = foptoas(n.Op, nl.Type, 0)

		goto abop
	}

sbop: // symmetric binary
	if nl.Ullman < nr.Ullman || nl.Op == gc.OLITERAL {
		nl, nr = nr, nl
	}

abop: // asymmetric binary
	if nl.Ullman >= nr.Ullman {
		var nt gc.Node
		gc.Tempname(&nt, nl.Type)
		gc.Cgen(nl, &nt)
		var n2 gc.Node
		gc.Mgen(nr, &n2, nil)
		var n1 gc.Node
		gc.Regalloc(&n1, nl.Type, res)
		gmove(&nt, &n1)
		gins(a, &n2, &n1)
		gmove(&n1, res)
		gc.Regfree(&n1)
		gc.Mfree(&n2)
	} else {
		var n2 gc.Node
		gc.Regalloc(&n2, nr.Type, res)
		gc.Cgen(nr, &n2)
		var n1 gc.Node
		gc.Regalloc(&n1, nl.Type, nil)
		gc.Cgen(nl, &n1)
		gins(a, &n2, &n1)
		gc.Regfree(&n2)
		gmove(&n1, res)
		gc.Regfree(&n1)
	}

	return
}