本文整理匯總了Golang中bootstrap/internal/obj.Prog.From3Type方法的典型用法代碼示例。如果您正苦於以下問題：Golang Prog.From3Type方法的具體用法？Golang Prog.From3Type怎麽用？Golang Prog.From3Type使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類bootstrap/internal/obj.Prog的用法示例。
在下文中一共展示了Prog.From3Type方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: copyu
// If s==nil, copyu returns the set/use of v in p; otherwise, it
// modifies p to replace reads of v with reads of s and returns 0 for
// success or non-zero for failure.
//
// If s==nil, copy returns one of the following values:
// 1 if v only used
// 2 if v is set and used in one address (read-alter-rewrite;
// can't substitute)
// 3 if v is only set
// 4 if v is set in one address and used in another (so addresses
// can be rewritten independently)
// 0 otherwise (not touched)
func copyu(p *obj.Prog, v *obj.Addr, s *obj.Addr) int {
if p.From3Type() != obj.TYPE_NONE {
// 7g never generates a from3
fmt.Printf("copyu: from3 (%v) not implemented\n", gc.Ctxt.Dconv(p.From3))
}
if p.RegTo2 != obj.REG_NONE {
// 7g never generates a to2
fmt.Printf("copyu: RegTo2 (%v) not implemented\n", obj.Rconv(int(p.RegTo2)))
}
switch p.As {
default:
fmt.Printf("copyu: can't find %v\n", obj.Aconv(int(p.As)))
return 2
case obj.ANOP, /* read p->from, write p->to */
arm64.ANEG,
arm64.AFNEGD,
arm64.AFNEGS,
arm64.AFSQRTD,
arm64.AFCVTZSD,
arm64.AFCVTZSS,
arm64.AFCVTZSDW,
arm64.AFCVTZSSW,
arm64.AFCVTZUD,
arm64.AFCVTZUS,
arm64.AFCVTZUDW,
arm64.AFCVTZUSW,
arm64.AFCVTSD,
arm64.AFCVTDS,
arm64.ASCVTFD,
arm64.ASCVTFS,
arm64.ASCVTFWD,
arm64.ASCVTFWS,
arm64.AUCVTFD,
arm64.AUCVTFS,
arm64.AUCVTFWD,
arm64.AUCVTFWS,
arm64.AMOVB,
arm64.AMOVBU,
arm64.AMOVH,
arm64.AMOVHU,
arm64.AMOVW,
arm64.AMOVWU,
arm64.AMOVD,
arm64.AFMOVS,
arm64.AFMOVD:
if p.Scond == 0 {
if s != nil {
if copysub(&p.From, v, s, 1) != 0 {
return 1
}
// Update only indirect uses of v in p->to
if !copyas(&p.To, v) {
if copysub(&p.To, v, s, 1) != 0 {
return 1
}
}
return 0
}
if copyas(&p.To, v) {
// Fix up implicit from
if p.From.Type == obj.TYPE_NONE {
p.From = p.To
}
if copyau(&p.From, v) {
return 4
}
return 3
}
if copyau(&p.From, v) {
return 1
}
if copyau(&p.To, v) {
// p->to only indirectly uses v
return 1
}
return 0
}
/* rar p->from, write p->to or read p->from, rar p->to */
if p.From.Type == obj.TYPE_MEM {
if copyas(&p.From, v) {
// No s!=nil check; need to fail
//.........這裏部分代碼省略.........