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Golang Prog.Reg方法代码示例

本文整理汇总了Golang中cmd/internal/obj.Prog.Reg方法的典型用法代码示例。如果您正苦于以下问题：Golang Prog.Reg方法的具体用法？Golang Prog.Reg怎么用？Golang Prog.Reg使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cmd/internal/obj.Prog的用法示例。


在下文中一共展示了Prog.Reg方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: zerorange

func zerorange(p *obj.Prog, frame int64, lo int64, hi int64) *obj.Prog {
	cnt := hi - lo
	if cnt == 0 {
		return p
	}
	if cnt < int64(4*gc.Widthptr) {
		for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
			p = appendpp(p, ppc64.AMOVD, obj.TYPE_REG, ppc64.REGZERO, 0, obj.TYPE_MEM, ppc64.REGSP, 8+frame+lo+i)
		}
	} else if cnt <= int64(128*gc.Widthptr) {
		p = appendpp(p, ppc64.AADD, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, ppc64.REGRT1, 0)
		p.Reg = ppc64.REGSP
		p = appendpp(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
		f := gc.Sysfunc("duffzero")
		gc.Naddr(&p.To, f)
		gc.Afunclit(&p.To, f)
		p.To.Offset = 4 * (128 - cnt/int64(gc.Widthptr))
	} else {
		p = appendpp(p, ppc64.AMOVD, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, ppc64.REGTMP, 0)
		p = appendpp(p, ppc64.AADD, obj.TYPE_REG, ppc64.REGTMP, 0, obj.TYPE_REG, ppc64.REGRT1, 0)
		p.Reg = ppc64.REGSP
		p = appendpp(p, ppc64.AMOVD, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, ppc64.REGTMP, 0)
		p = appendpp(p, ppc64.AADD, obj.TYPE_REG, ppc64.REGTMP, 0, obj.TYPE_REG, ppc64.REGRT2, 0)
		p.Reg = ppc64.REGRT1
		p = appendpp(p, ppc64.AMOVDU, obj.TYPE_REG, ppc64.REGZERO, 0, obj.TYPE_MEM, ppc64.REGRT1, int64(gc.Widthptr))
		p1 := p
		p = appendpp(p, ppc64.ACMP, obj.TYPE_REG, ppc64.REGRT1, 0, obj.TYPE_REG, ppc64.REGRT2, 0)
		p = appendpp(p, ppc64.ABNE, obj.TYPE_NONE, 0, 0, obj.TYPE_BRANCH, 0, 0)
		gc.Patch(p, p1)
	}

	return p
}
开发者ID:Ericean，项目名称:go，代码行数:33，代码来源:ggen.go

示例2: zerorange

// TODO(mips): implement DUFFZERO
func zerorange(p *obj.Prog, frame int64, lo int64, hi int64) *obj.Prog {

	cnt := hi - lo
	if cnt == 0 {
		return p
	}
	if cnt < int64(4*gc.Widthptr) {
		for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
			p = gc.Appendpp(p, mips.AMOVW, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGSP, gc.Ctxt.FixedFrameSize()+frame+lo+i)
		}
	} else {
		//fmt.Printf("zerorange frame:%v, lo: %v, hi:%v \n", frame ,lo, hi)
		//	ADD 	$(FIXED_FRAME+frame+lo-4), SP, r1
		//	ADD 	$cnt, r1, r2
		// loop:
		//	MOVW	R0, (Widthptr)r1
		//	ADD 	$Widthptr, r1
		//	BNE		r1, r2, loop
		p = gc.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, gc.Ctxt.FixedFrameSize()+frame+lo-4, obj.TYPE_REG, mips.REGRT1, 0)
		p.Reg = mips.REGSP
		p = gc.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, mips.REGRT2, 0)
		p.Reg = mips.REGRT1
		p = gc.Appendpp(p, mips.AMOVW, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGRT1, int64(gc.Widthptr))
		p1 := p
		p = gc.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, int64(gc.Widthptr), obj.TYPE_REG, mips.REGRT1, 0)
		p = gc.Appendpp(p, mips.ABNE, obj.TYPE_REG, mips.REGRT1, 0, obj.TYPE_BRANCH, 0, 0)
		p.Reg = mips.REGRT2
		gc.Patch(p, p1)
	}

	return p
}
开发者ID:Harvey-OS，项目名称:go，代码行数:33，代码来源:ggen.go

示例3: zerorange

func zerorange(p *obj.Prog, frame int64, lo int64, hi int64) *obj.Prog {
	cnt := hi - lo
	if cnt == 0 {
		return p
	}
	if cnt < int64(4*gc.Widthptr) {
		for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
			p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_REG, arm64.REGZERO, 0, obj.TYPE_MEM, arm64.REGSP, 8+frame+lo+i)
		}
	} else if cnt <= int64(128*gc.Widthptr) && !darwin { // darwin ld64 cannot handle BR26 reloc with non-zero addend
		p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_REG, arm64.REGSP, 0, obj.TYPE_REG, arm64.REGRT1, 0)
		p = gc.Appendpp(p, arm64.AADD, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, arm64.REGRT1, 0)
		p.Reg = arm64.REGRT1
		p = gc.Appendpp(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
		gc.Naddr(&p.To, gc.Sysfunc("duffzero"))
		p.To.Offset = 4 * (128 - cnt/int64(gc.Widthptr))
	} else {
		p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, arm64.REGTMP, 0)
		p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_REG, arm64.REGSP, 0, obj.TYPE_REG, arm64.REGRT1, 0)
		p = gc.Appendpp(p, arm64.AADD, obj.TYPE_REG, arm64.REGTMP, 0, obj.TYPE_REG, arm64.REGRT1, 0)
		p.Reg = arm64.REGRT1
		p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, arm64.REGTMP, 0)
		p = gc.Appendpp(p, arm64.AADD, obj.TYPE_REG, arm64.REGTMP, 0, obj.TYPE_REG, arm64.REGRT2, 0)
		p.Reg = arm64.REGRT1
		p = gc.Appendpp(p, arm64.AMOVD, obj.TYPE_REG, arm64.REGZERO, 0, obj.TYPE_MEM, arm64.REGRT1, int64(gc.Widthptr))
		p.Scond = arm64.C_XPRE
		p1 := p
		p = gc.Appendpp(p, arm64.ACMP, obj.TYPE_REG, arm64.REGRT1, 0, obj.TYPE_NONE, 0, 0)
		p.Reg = arm64.REGRT2
		p = gc.Appendpp(p, arm64.ABNE, obj.TYPE_NONE, 0, 0, obj.TYPE_BRANCH, 0, 0)
		gc.Patch(p, p1)
	}

	return p
}
开发者ID:achanda，项目名称:go，代码行数:35，代码来源:ggen.go

示例4: raddr

/*
 * 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.Fatal("bad in raddr: %v", gc.Oconv(int(n.Op), 0))
		} else {
			gc.Fatal("bad in raddr: <null>")
		}
		p.Reg = 0
	} else {
		p.Reg = a.Reg
	}
}
开发者ID:wheelcomplex，项目名称:go-1，代码行数:17，代码来源:gsubr.go

示例5: outgcode

func outgcode(a int, g1 *obj.Addr, reg int, g2, g3 *obj.Addr) {
	var p *obj.Prog
	var pl *obj.Plist

	if asm.Pass == 1 {
		goto out
	}

	p = asm.Ctxt.NewProg()
	p.As = int16(a)
	p.Lineno = stmtline
	if nosched != 0 {
		p.Mark |= ppc64.NOSCHED
	}
	p.From = *g1
	p.Reg = int16(reg)
	p.From3 = *g2
	p.To = *g3
	p.Pc = int64(asm.PC)

	if lastpc == nil {
		pl = obj.Linknewplist(asm.Ctxt)
		pl.Firstpc = p
	} else {
		lastpc.Link = p
	}
	lastpc = p

out:
	if a != obj.AGLOBL && a != obj.ADATA {
		asm.PC++
	}
}
开发者ID:klueska，项目名称:go-akaros，代码行数:33，代码来源:lex.go

示例6: copysub1

func copysub1(p1 *obj.Prog, v *obj.Addr, s *obj.Addr, f int) int {
	if f != 0 {
		if copyau1(p1, v) {
			p1.Reg = s.Reg
		}
	}
	return 0
}
开发者ID:xiezerozero，项目名称:go，代码行数:8，代码来源:peep.go

示例7: zerorange

func zerorange(p *obj.Prog, frame int64, lo int64, hi int64) *obj.Prog {
	cnt := hi - lo
	if cnt == 0 {
		return p
	}
	if cnt < int64(4*gc.Widthptr) {
		for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
			p = appendpp(p, mips.AMOVV, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGSP, 8+frame+lo+i)
		}
		// TODO(dfc): https://golang.org/issue/12108
		// If DUFFZERO is used inside a tail call (see genwrapper) it will
		// overwrite the link register.
	} else if false && cnt <= int64(128*gc.Widthptr) {
		p = appendpp(p, mips.AADDV, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, mips.REGRT1, 0)
		p.Reg = mips.REGSP
		p = appendpp(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
		f := gc.Sysfunc("duffzero")
		gc.Naddr(&p.To, f)
		gc.Afunclit(&p.To, f)
		p.To.Offset = 8 * (128 - cnt/int64(gc.Widthptr))
	} else {
		//	ADDV	$(8+frame+lo-8), SP, r1
		//	ADDV	$cnt, r1, r2
		// loop:
		//	MOVV	R0, (Widthptr)r1
		//	ADDV	$Widthptr, r1
		//	BNE		r1, r2, loop
		p = appendpp(p, mips.AADDV, obj.TYPE_CONST, 0, 8+frame+lo-8, obj.TYPE_REG, mips.REGRT1, 0)
		p.Reg = mips.REGSP
		p = appendpp(p, mips.AADDV, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, mips.REGRT2, 0)
		p.Reg = mips.REGRT1
		p = appendpp(p, mips.AMOVV, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGRT1, int64(gc.Widthptr))
		p1 := p
		p = appendpp(p, mips.AADDV, obj.TYPE_CONST, 0, int64(gc.Widthptr), obj.TYPE_REG, mips.REGRT1, 0)
		p = appendpp(p, mips.ABNE, obj.TYPE_REG, mips.REGRT1, 0, obj.TYPE_BRANCH, 0, 0)
		p.Reg = mips.REGRT2
		gc.Patch(p, p1)
	}

	return p
}
开发者ID:Greentor，项目名称:go，代码行数:41，代码来源:ggen.go

示例8: cgen_hmul

/*
 * generate high multiply
 *  res = (nl * nr) >> wordsize
 */
func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
	if nl.Ullman < nr.Ullman {
		tmp := nl
		nl = nr
		nr = tmp
	}

	t := nl.Type
	w := int(t.Width * 8)
	var n1 gc.Node
	gc.Regalloc(&n1, t, res)
	gc.Cgen(nl, &n1)
	var n2 gc.Node
	gc.Regalloc(&n2, t, nil)
	gc.Cgen(nr, &n2)
	switch gc.Simtype[t.Etype] {
	case gc.TINT8,
		gc.TINT16:
		gins(optoas(gc.OMUL, t), &n2, &n1)
		gshift(arm.AMOVW, &n1, arm.SHIFT_AR, int32(w), &n1)

	case gc.TUINT8,
		gc.TUINT16:
		gins(optoas(gc.OMUL, t), &n2, &n1)
		gshift(arm.AMOVW, &n1, arm.SHIFT_LR, int32(w), &n1)

		// perform a long multiplication.
	case gc.TINT32,
		gc.TUINT32:
		var p *obj.Prog
		if gc.Issigned[t.Etype] {
			p = gins(arm.AMULL, &n2, nil)
		} else {
			p = gins(arm.AMULLU, &n2, nil)
		}

		// n2 * n1 -> (n1 n2)
		p.Reg = n1.Reg

		p.To.Type = obj.TYPE_REGREG
		p.To.Reg = n1.Reg
		p.To.Offset = int64(n2.Reg)

	default:
		gc.Fatalf("cgen_hmul %v", t)
	}

	gc.Cgen(&n1, res)
	gc.Regfree(&n1)
	gc.Regfree(&n2)
}
开发者ID:rentongzhang，项目名称:go，代码行数:55，代码来源:ggen.go

示例9: zerorange

func zerorange(p *obj.Prog, frame int64, lo int64, hi int64, r0 *uint32) *obj.Prog {
	cnt := hi - lo
	if cnt == 0 {
		return p
	}
	if *r0 == 0 {
		p = appendpp(p, arm.AMOVW, obj.TYPE_CONST, 0, 0, obj.TYPE_REG, arm.REG_R0, 0)
		*r0 = 1
	}

	if cnt < int64(4*gc.Widthptr) {
		for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
			p = appendpp(p, arm.AMOVW, obj.TYPE_REG, arm.REG_R0, 0, obj.TYPE_MEM, arm.REGSP, int32(4+frame+lo+i))
		}
	} else if !gc.Nacl && (cnt <= int64(128*gc.Widthptr)) {
		p = appendpp(p, arm.AADD, obj.TYPE_CONST, 0, int32(4+frame+lo), obj.TYPE_REG, arm.REG_R1, 0)
		p.Reg = arm.REGSP
		p = appendpp(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
		f := gc.Sysfunc("duffzero")
		gc.Naddr(&p.To, f)
		gc.Afunclit(&p.To, f)
		p.To.Offset = 4 * (128 - cnt/int64(gc.Widthptr))
	} else {
		p = appendpp(p, arm.AADD, obj.TYPE_CONST, 0, int32(4+frame+lo), obj.TYPE_REG, arm.REG_R1, 0)
		p.Reg = arm.REGSP
		p = appendpp(p, arm.AADD, obj.TYPE_CONST, 0, int32(cnt), obj.TYPE_REG, arm.REG_R2, 0)
		p.Reg = arm.REG_R1
		p = appendpp(p, arm.AMOVW, obj.TYPE_REG, arm.REG_R0, 0, obj.TYPE_MEM, arm.REG_R1, 4)
		p1 := p
		p.Scond |= arm.C_PBIT
		p = appendpp(p, arm.ACMP, obj.TYPE_REG, arm.REG_R1, 0, obj.TYPE_NONE, 0, 0)
		p.Reg = arm.REG_R2
		p = appendpp(p, arm.ABNE, obj.TYPE_NONE, 0, 0, obj.TYPE_BRANCH, 0, 0)
		gc.Patch(p, p1)
	}

	return p
}
开发者ID:arnold8，项目名称:go，代码行数:38，代码来源:ggen.go

示例10: outcode

func outcode(a int, g1 *obj.Addr, reg int, g2 *obj.Addr) {
	var p *obj.Prog
	var pl *obj.Plist

	if asm.Pass == 1 {
		goto out
	}

	if g1.Scale != 0 {
		if reg != 0 || g2.Scale != 0 {
			yyerror("bad addressing modes")
		}
		reg = int(g1.Scale)
	} else if g2.Scale != 0 {
		if reg != 0 {
			yyerror("bad addressing modes")
		}
		reg = int(g2.Scale)
	}

	p = asm.Ctxt.NewProg()
	p.As = int16(a)
	p.Lineno = stmtline
	if nosched != 0 {
		p.Mark |= ppc64.NOSCHED
	}
	p.From = *g1
	p.Reg = int16(reg)
	p.To = *g2
	p.Pc = int64(asm.PC)

	if lastpc == nil {
		pl = obj.Linknewplist(asm.Ctxt)
		pl.Firstpc = p
	} else {
		lastpc.Link = p
	}
	lastpc = p

out:
	if a != obj.AGLOBL && a != obj.ADATA {
		asm.PC++
	}
}
开发者ID:klueska，项目名称:go-akaros，代码行数:44，代码来源:lex.go

示例11: outcode

func outcode(a, scond int32, g1 *obj.Addr, reg int32, g2 *obj.Addr) {
	var p *obj.Prog
	var pl *obj.Plist

	/* hack to make B.NE etc. work: turn it into the corresponding conditional */
	if a == arm.AB {
		a = int32(bcode[(scond^arm.C_SCOND_XOR)&0xf])
		scond = (scond &^ 0xf) | Always
	}

	if asm.Pass == 1 {
		goto out
	}

	p = new(obj.Prog)
	*p = obj.Prog{}
	p.Ctxt = asm.Ctxt
	p.As = int16(a)
	p.Lineno = stmtline
	p.Scond = uint8(scond)
	p.From = *g1
	p.Reg = int16(reg)
	p.To = *g2
	p.Pc = int64(asm.PC)

	if lastpc == nil {
		pl = obj.Linknewplist(asm.Ctxt)
		pl.Firstpc = p
	} else {
		lastpc.Link = p
	}
	lastpc = p

out:
	if a != obj.AGLOBL && a != obj.ADATA {
		asm.PC++
	}
}
开发者ID:Ericean，项目名称:go，代码行数:38，代码来源:lex.go

示例12: peep

// UNUSED
func peep(firstp *obj.Prog) {
	g := (*gc.Graph)(gc.Flowstart(firstp, nil))
	if g == nil {
		return
	}
	gactive = 0

	var r *gc.Flow
	var p *obj.Prog
	var t int
loop1:
	if gc.Debug['P'] != 0 && gc.Debug['v'] != 0 {
		gc.Dumpit("loop1", g.Start, 0)
	}

	t = 0
	for r = g.Start; r != nil; r = r.Link {
		p = r.Prog
		switch p.As {
		/*
		 * elide shift into TYPE_SHIFT operand of subsequent instruction
		 */
		//			if(shiftprop(r)) {
		//				excise(r);
		//				t++;
		//				break;
		//			}
		case arm.ASLL,
			arm.ASRL,
			arm.ASRA:
			break

		case arm.AMOVB,
			arm.AMOVH,
			arm.AMOVW,
			arm.AMOVF,
			arm.AMOVD:
			if regtyp(&p.From) {
				if p.From.Type == p.To.Type && isfloatreg(&p.From) == isfloatreg(&p.To) {
					if p.Scond == arm.C_SCOND_NONE {
						if copyprop(g, r) {
							excise(r)
							t++
							break
						}

						if subprop(r) && copyprop(g, r) {
							excise(r)
							t++
							break
						}
					}
				}
			}

		case arm.AMOVHS,
			arm.AMOVHU,
			arm.AMOVBS,
			arm.AMOVBU:
			if p.From.Type == obj.TYPE_REG {
				if shortprop(r) {
					t++
				}
			}
		}
	}

	/*
		if(p->scond == C_SCOND_NONE)
		if(regtyp(&p->to))
		if(isdconst(&p->from)) {
			constprop(&p->from, &p->to, r->s1);
		}
		break;
	*/
	if t != 0 {
		goto loop1
	}

	for r := (*gc.Flow)(g.Start); r != nil; r = r.Link {
		p = r.Prog
		switch p.As {
		/*
		 * EOR -1,x,y => MVN x,y
		 */
		case arm.AEOR:
			if isdconst(&p.From) && p.From.Offset == -1 {
				p.As = arm.AMVN
				p.From.Type = obj.TYPE_REG
				if p.Reg != 0 {
					p.From.Reg = p.Reg
				} else {
					p.From.Reg = p.To.Reg
				}
				p.Reg = 0
			}
		}
	}

//.........这里部分代码省略.........
开发者ID:xiezerozero，项目名称:go，代码行数:101，代码来源:peep.go

示例13: copyu


//.........这里部分代码省略.........
		s390x.AORN,
		s390x.AAND,
		s390x.AANDN,
		s390x.ANAND,
		s390x.ANOR,
		s390x.AXOR,
		s390x.AMULLW,
		s390x.AMULLD,
		s390x.AMULHD,
		s390x.AMULHDU,
		s390x.ADIVW,
		s390x.ADIVD,
		s390x.ADIVWU,
		s390x.ADIVDU,
		s390x.AFADDS,
		s390x.AFADD,
		s390x.AFSUBS,
		s390x.AFSUB,
		s390x.AFMULS,
		s390x.AFMUL,
		s390x.AFDIVS,
		s390x.AFDIV:
		if s != nil {
			copysub(&p.From, v, s)
			copysub1(p, v, s)

			// Update only indirect uses of v in p.To
			if !copyas(&p.To, v) {
				copysub(&p.To, v, s)
			}
		}

		if copyas(&p.To, v) {
			if p.Reg == 0 {
				p.Reg = p.To.Reg
			}
			if copyau(&p.From, v) || copyau1(p, v) {
				return _ReadWriteDiff
			}
			return _Write
		}

		if copyau(&p.From, v) {
			return _Read
		}
		if copyau1(p, v) {
			return _Read
		}
		if copyau(&p.To, v) {
			return _Read
		}
		return _None

	case s390x.ABEQ,
		s390x.ABGT,
		s390x.ABGE,
		s390x.ABLT,
		s390x.ABLE,
		s390x.ABNE,
		s390x.ABVC,
		s390x.ABVS:
		return _None

	case obj.ACHECKNIL, // read p.From
		s390x.ACMP, // read p.From, read p.To
		s390x.ACMPU,
开发者ID:hurkgu，项目名称:go，代码行数:67，代码来源:peep.go

示例14: copyu

/*
 * return
 * 1 if v only used (and substitute),
 * 2 if read-alter-rewrite
 * 3 if set
 * 4 if set and used
 * 0 otherwise (not touched)
 */
func copyu(p *obj.Prog, v *obj.Addr, s *obj.Addr) int {
	switch p.As {
	default:
		fmt.Printf("copyu: can't find %v\n", obj.Aconv(int(p.As)))
		return 2

	case arm.AMOVM:
		if v.Type != obj.TYPE_REG {
			return 0
		}
		if p.From.Type == obj.TYPE_CONST { /* read reglist, read/rar */
			if s != nil {
				if p.From.Offset&(1<<uint(v.Reg)) != 0 {
					return 1
				}
				if copysub(&p.To, v, s, 1) != 0 {
					return 1
				}
				return 0
			}

			if copyau(&p.To, v) {
				if p.Scond&arm.C_WBIT != 0 {
					return 2
				}
				return 1
			}

			if p.From.Offset&(1<<uint(v.Reg)) != 0 {
				return 1 /* read/rar, write reglist */
			}
		} else {
			if s != nil {
				if p.To.Offset&(1<<uint(v.Reg)) != 0 {
					return 1
				}
				if copysub(&p.From, v, s, 1) != 0 {
					return 1
				}
				return 0
			}

			if copyau(&p.From, v) {
				if p.Scond&arm.C_WBIT != 0 {
					return 2
				}
				if p.To.Offset&(1<<uint(v.Reg)) != 0 {
					return 4
				}
				return 1
			}

			if p.To.Offset&(1<<uint(v.Reg)) != 0 {
				return 3
			}
		}

		return 0

	case obj.ANOP, /* read,, write */
		arm.ASQRTD,
		arm.AMOVW,
		arm.AMOVF,
		arm.AMOVD,
		arm.AMOVH,
		arm.AMOVHS,
		arm.AMOVHU,
		arm.AMOVB,
		arm.AMOVBS,
		arm.AMOVBU,
		arm.AMOVFW,
		arm.AMOVWF,
		arm.AMOVDW,
		arm.AMOVWD,
		arm.AMOVFD,
		arm.AMOVDF:
		if p.Scond&(arm.C_WBIT|arm.C_PBIT) != 0 {
			if v.Type == obj.TYPE_REG {
				if p.From.Type == obj.TYPE_MEM || p.From.Type == obj.TYPE_SHIFT {
					if p.From.Reg == v.Reg {
						return 2
					}
				} else {
					if p.To.Reg == v.Reg {
						return 2
					}
				}
			}
		}

		if s != nil {
			if copysub(&p.From, v, s, 1) != 0 {
//.........这里部分代码省略.........
开发者ID:xiezerozero，项目名称:go，代码行数:101，代码来源:peep.go

示例15: copysub1

// copysub1 replaces p.Reg with s.Reg if p.Reg and v.Reg are direct
// references to the same register.
func copysub1(p *obj.Prog, v, s *obj.Addr) {
	if copyau1(p, v) {
		p.Reg = s.Reg
	}
}
开发者ID:hurkgu，项目名称:go，代码行数:7，代码来源:peep.go


注：本文中的cmd/internal/obj.Prog.Reg方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。