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cmd/internal/gc: simplify some indexing

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Change-Id: I7d289c7f250e4db551192d52535a90974685f0b3
Reviewed-on: https://go-review.googlesource.com/6891
Reviewed-by: Minux Ma <minux@golang.org>
This commit is contained in:
Russ Cox 2015-03-04 17:36:50 -05:00
parent 845c4ff52a
commit 2897d6dea7
1 changed files with 9 additions and 9 deletions
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18
src/cmd/internal/gc/reg.go
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@ -81,7 +81,7 @@ func setaddrs(bit Bits) {
// disable all pieces of that variable
for i = 0; i < nvar; i++ {
v = &var_[i:][0]
v = &var_[i]
if v.node == node && int(v.name) == n {
v.addr = 2
}
@ -135,7 +135,7 @@ func addmove(r *Flow, bn int, rn int, f int) {
p.Link = p1
p1.Lineno = p.Lineno
v := &var_[bn:][0]
v := &var_[bn]
a := &p1.To
a.Offset = v.offset
@ -265,7 +265,7 @@ func mkvar(f *Flow, a *obj.Addr) Bits {
flag := 0
var v *Var
for i := 0; i < nvar; i++ {
v = &var_[i:][0]
v = &var_[i]
if v.node == node && int(v.name) == n {
if v.offset == o {
if int(v.etype) == et {
@ -305,7 +305,7 @@ func mkvar(f *Flow, a *obj.Addr) Bits {
// a variable but not all of it.
var v *Var
for i := 0; i < nvar; i++ {
v = &var_[i:][0]
v = &var_[i]
if v.node == node {
v.addr = 1
}
@ -316,7 +316,7 @@ func mkvar(f *Flow, a *obj.Addr) Bits {
i := nvar
nvar++
v = &var_[i:][0]
v = &var_[i]
v.id = i
v.offset = o
v.name = int8(n)
@ -457,7 +457,7 @@ func prop(f *Flow, ref Bits, cal Bits) {
if z*64+i >= nvar || (cal.b[z]>>uint(i))&1 == 0 {
continue
}
v = &var_[z*64+i:][0]
v = &var_[z*64+i]
if v.node.Opt == nil { // v represents fixed register, not Go variable
continue
}
@ -546,7 +546,7 @@ func synch(f *Flow, dif Bits) {
}
func allreg(b uint64, r *Rgn) uint64 {
v := &var_[r.varno:][0]
v := &var_[r.varno]
r.regno = 0
switch v.etype {
default:
@ -1043,7 +1043,7 @@ func regopt(firstp *obj.Prog) {
}
for i := 0; i < nvar; i++ {
v := &var_[i:][0]
v := &var_[i]
if v.addr != 0 {
bit = blsh(uint(i))
for z = 0; z < BITS; z++ {
@ -1271,7 +1271,7 @@ brk:
vreg = allreg(usedreg, rgp)
if rgp.regno != 0 {
if Debug['R'] != 0 && Debug['v'] != 0 {
v := &var_[rgp.varno:][0]
v := &var_[rgp.varno]
fmt.Printf("registerize %v+%d (bit=%2d et=%v) in %v usedreg=%#x vreg=%#x\n", Nconv(v.node, 0), v.offset, rgp.varno, Econv(int(v.etype), 0), obj.Rconv(int(rgp.regno)), usedreg, vreg)
}