cmd/internal/obj/*: rename Rconv to rconv

Each architecture's Rconv function is only used inside its
respective package, so it does not need to be exported.

Change-Id: Ifbd629964d7a9edd66501d7cdf4750621d66d646
Reviewed-on: https://go-review.googlesource.com/39110
Run-TryBot: Dave Cheney <dave@cheney.net>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/internal/obj/arm/list5.go

@@ -36,11 +36,11 @@ import (
 )
 
 func init() {
-	obj.RegisterRegister(obj.RBaseARM, MAXREG, Rconv)
+	obj.RegisterRegister(obj.RBaseARM, MAXREG, rconv)
 	obj.RegisterOpcode(obj.ABaseARM, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if r == 0 {
 		return "NONE"
 	}

src/cmd/internal/obj/arm64/list7.go

@@ -55,11 +55,11 @@ var strcond = [16]string{
 }
 
 func init() {
-	obj.RegisterRegister(obj.RBaseARM64, REG_SPECIAL+1024, Rconv)
+	obj.RegisterRegister(obj.RBaseARM64, REG_SPECIAL+1024, rconv)
 	obj.RegisterOpcode(obj.ABaseARM64, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if r == REGG {
 		return "g"
 	}

src/cmd/internal/obj/mips/list0.go

@@ -35,11 +35,11 @@ import (
 )
 
 func init() {
-	obj.RegisterRegister(obj.RBaseMIPS, REG_LAST+1, Rconv)
+	obj.RegisterRegister(obj.RBaseMIPS, REG_LAST+1, rconv)
 	obj.RegisterOpcode(obj.ABaseMIPS, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if r == 0 {
 		return "NONE"
 	}

src/cmd/internal/obj/ppc64/list9.go

@@ -35,11 +35,11 @@ import (
 )
 
 func init() {
-	obj.RegisterRegister(obj.RBasePPC64, REG_DCR0+1024, Rconv)
+	obj.RegisterRegister(obj.RBasePPC64, REG_DCR0+1024, rconv)
 	obj.RegisterOpcode(obj.ABasePPC64, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if r == 0 {
 		return "NONE"
 	}

src/cmd/internal/obj/s390x/listz.go

@@ -35,11 +35,11 @@ import (
 )
 
 func init() {
-	obj.RegisterRegister(obj.RBaseS390X, REG_R0+1024, Rconv)
+	obj.RegisterRegister(obj.RBaseS390X, REG_R0+1024, rconv)
 	obj.RegisterOpcode(obj.ABaseS390X, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if r == 0 {
 		return "NONE"
 	}

src/cmd/internal/obj/x86/asm6.go

@@ -3207,7 +3207,7 @@ func isax(a *obj.Addr) bool {
 
 func subreg(p *obj.Prog, from int, to int) {
 	if false { /* debug['Q'] */
-		fmt.Printf("\n%v\ts/%v/%v/\n", p, Rconv(from), Rconv(to))
+		fmt.Printf("\n%v\ts/%v/%v/\n", p, rconv(from), rconv(to))
 	}
 
 	if int(p.From.Reg) == from {
@@ -4084,7 +4084,7 @@ func (asmbuf *AsmBuf) doasm(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) {
 								r.Off = int32(p.Pc + int64(asmbuf.Len()))
 								r.Type = obj.R_CALL
 								r.Siz = 4
-								r.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(Rconv(int(dst))), 0)
+								r.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(rconv(int(dst))), 0)
 								asmbuf.PutInt32(0)
 
 								asmbuf.Put2(0x8B, byte(2<<6|reg[dst]|(reg[dst]<<3)))

src/cmd/internal/obj/x86/list6.go

@@ -168,11 +168,11 @@ var Register = []string{
 }
 
 func init() {
-	obj.RegisterRegister(REG_AL, REG_AL+len(Register), Rconv)
+	obj.RegisterRegister(REG_AL, REG_AL+len(Register), rconv)
 	obj.RegisterOpcode(obj.ABaseAMD64, Anames)
 }
 
-func Rconv(r int) string {
+func rconv(r int) string {
 	if REG_AL <= r && r-REG_AL < len(Register) {
 		return Register[r-REG_AL]
 	}

src/cmd/internal/obj/x86/obj6.go

@@ -542,7 +542,7 @@ func rewriteToPcrel(ctxt *obj.Link, p *obj.Prog) {
 	r := obj.Appendp(ctxt, q)
 	r.RegTo2 = 1
 	q.As = obj.ACALL
-	q.To.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(Rconv(int(dst))), 0)
+	q.To.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(rconv(int(dst))), 0)
 	q.To.Type = obj.TYPE_MEM
 	q.To.Name = obj.NAME_EXTERN
 	q.To.Sym.Set(obj.AttrLocal, true)