[dev.inline] cmd/internal/obj: use src.Pos in obj.Prog

This will let us use the src.Pos struct to thread inlining
information through to obj.

Change-Id: I96a16d3531167396988df66ae70f0b729049cc82
Reviewed-on: https://go-review.googlesource.com/34195
Run-TryBot: David Lazar <lazard@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

src/cmd/asm/internal/asm/asm.go

@@ -13,6 +13,7 @@ import (
 	"cmd/asm/internal/flags"
 	"cmd/asm/internal/lex"
 	"cmd/internal/obj"
+	"cmd/internal/src"
 	"cmd/internal/sys"
 )
 
@@ -163,7 +164,7 @@ func (p *Parser) asmText(word string, operands [][]lex.Token) {
 	prog := &obj.Prog{
 		Ctxt:   p.ctxt,
 		As:     obj.ATEXT,
-		Lineno: p.histLineNum,
+		Lineno: src.MakePos(p.histLineNum),
 		From:   nameAddr,
 		From3: &obj.Addr{
 			Type:   obj.TYPE_CONST,
@@ -296,7 +297,7 @@ func (p *Parser) asmPCData(word string, operands [][]lex.Token) {
 	prog := &obj.Prog{
 		Ctxt:   p.ctxt,
 		As:     obj.APCDATA,
-		Lineno: p.histLineNum,
+		Lineno: src.MakePos(p.histLineNum),
 		From:   key,
 		To:     value,
 	}
@@ -326,7 +327,7 @@ func (p *Parser) asmFuncData(word string, operands [][]lex.Token) {
 	prog := &obj.Prog{
 		Ctxt:   p.ctxt,
 		As:     obj.AFUNCDATA,
-		Lineno: p.histLineNum,
+		Lineno: src.MakePos(p.histLineNum),
 		From:   valueAddr,
 		To:     nameAddr,
 	}
@@ -341,7 +342,7 @@ func (p *Parser) asmJump(op obj.As, cond string, a []obj.Addr) {
 	var target *obj.Addr
 	prog := &obj.Prog{
 		Ctxt:   p.ctxt,
-		Lineno: p.histLineNum,
+		Lineno: src.MakePos(p.histLineNum),
 		As:     op,
 	}
 	switch len(a) {
@@ -469,7 +470,7 @@ func (p *Parser) asmInstruction(op obj.As, cond string, a []obj.Addr) {
 	// fmt.Printf("%s %+v\n", op, a)
 	prog := &obj.Prog{
 		Ctxt:   p.ctxt,
-		Lineno: p.histLineNum,
+		Lineno: src.MakePos(p.histLineNum),
 		As:     op,
 	}
 	switch len(a) {

src/cmd/compile/internal/gc/gsubr.go

@@ -45,7 +45,7 @@ func Prog(as obj.As) *obj.Prog {
 	}
 
 	p.As = as
-	p.Lineno = int32(lineno.Line()) // TODO(gri) fix this
+	p.Lineno = lineno
 	return p
 }
 

src/cmd/compile/internal/gc/plive.go

@@ -17,7 +17,6 @@ package gc
 
 import (
 	"cmd/internal/obj"
-	"cmd/internal/src"
 	"cmd/internal/sys"
 	"crypto/md5"
 	"fmt"
@@ -1254,7 +1253,7 @@ func livenessepilogue(lv *Liveness) {
 						if !n.Name.Needzero {
 							n.Name.Needzero = true
 							if debuglive >= 1 {
-								Warnl(src.MakePos(p.Lineno), "%v: %L is ambiguously live", Curfn.Func.Nname, n)
+								Warnl(p.Lineno, "%v: %L is ambiguously live", Curfn.Func.Nname, n)
 							}
 						}
 					}
@@ -1345,7 +1344,7 @@ func livenessepilogue(lv *Liveness) {
 						}
 						n := lv.vars[j]
 						if n.Class != PPARAM {
-							yyerrorl(src.MakePos(p.Lineno), "internal error: %v %L recorded as live on entry, p.Pc=%v", Curfn.Func.Nname, n, p.Pc)
+							yyerrorl(p.Lineno, "internal error: %v %L recorded as live on entry, p.Pc=%v", Curfn.Func.Nname, n, p.Pc)
 						}
 					}
 				}

src/cmd/internal/obj/link.go

@@ -32,6 +32,7 @@ package obj
 
 import (
 	"bufio"
+	"cmd/internal/src"
 	"cmd/internal/sys"
 	"fmt"
 )
@@ -238,7 +239,7 @@ type Prog struct {
 	Forwd  *Prog       // for x86 back end
 	Rel    *Prog       // for x86, arm back ends
 	Pc     int64       // for back ends or assembler: virtual or actual program counter, depending on phase
-	Lineno int32       // line number of this instruction
+	Lineno src.Pos     // line number of this instruction
 	Spadj  int32       // effect of instruction on stack pointer (increment or decrement amount)
 	As     As          // assembler opcode
 	Reg    int16       // 2nd source operand

src/cmd/internal/obj/pcln.go

@@ -138,10 +138,10 @@ func funcpctab(ctxt *Link, dst *Pcdata, func_ *LSym, desc string, valfunc func(*
 // Because p->lineno applies to p, phase == 0 (before p)
 // takes care of the update.
 func pctofileline(ctxt *Link, sym *LSym, oldval int32, p *Prog, phase int32, arg interface{}) int32 {
-	if p.As == ATEXT || p.As == ANOP || p.As == AUSEFIELD || p.Lineno == 0 || phase == 1 {
+	if p.As == ATEXT || p.As == ANOP || p.As == AUSEFIELD || p.Lineno.Line() == 0 || phase == 1 {
 		return oldval
 	}
-	f, l := linkgetline(ctxt, p.Lineno)
+	f, l := linkgetline(ctxt, p.Lineno.Line())
 	if f == nil {
 		//	print("getline failed for %s %v\n", ctxt->cursym->name, p);
 		return oldval

src/cmd/internal/obj/util.go

@@ -59,7 +59,7 @@ func Getgoextlinkenabled() string {
 }
 
 func (p *Prog) Line() string {
-	return p.Ctxt.LineHist.LineString(int(p.Lineno))
+	return p.Ctxt.LineHist.LineString(int(p.Lineno.Line()))
 }
 
 var armCondCode = []string{