cmd/compile: change Func.Inldcl from *[]*Node to Nodes

Change-Id: I055e986c3f27d5c07badcd1684f4fe1d65a917a9
Reviewed-on: https://go-review.googlesource.com/20523
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

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

@@ -151,9 +151,7 @@ func caninl(fn *Node) {
 	fn.Func.Nname.Func.Inl.Set(fn.Nbody.Slice())
 	fn.Nbody.Set(inlcopylist(fn.Func.Nname.Func.Inl.Slice()))
 	inldcl := inlcopylist(fn.Func.Nname.Name.Defn.Func.Dcl)
-	if len(inldcl) > 0 {
-		fn.Func.Nname.Func.Inldcl = &inldcl
-	}
+	fn.Func.Nname.Func.Inldcl.Set(inldcl)
 	fn.Func.Nname.Func.InlCost = int32(maxBudget - budget)
 
 	// hack, TODO, check for better way to link method nodes back to the thing with the ->inl
@@ -565,9 +563,7 @@ func mkinlcall1(np **Node, fn *Node, isddd bool) {
 	var dcl []*Node
 	if fn.Name.Defn != nil {
 		// local function
-		if fn.Func.Inldcl != nil {
-			dcl = *fn.Func.Inldcl
-		}
+		dcl = fn.Func.Inldcl.Slice()
 	} else {
 		// imported function
 		dcl = fn.Func.Dcl

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

@@ -151,9 +151,9 @@ type Func struct {
 	Shortname  *Node
 	Enter      Nodes // for example, allocate and initialize memory for escaping parameters
 	Exit       Nodes
-	Cvars      Nodes    // closure params
-	Dcl        []*Node  // autodcl for this func/closure
-	Inldcl     *[]*Node // copy of dcl for use in inlining
+	Cvars      Nodes   // closure params
+	Dcl        []*Node // autodcl for this func/closure
+	Inldcl     Nodes   // copy of dcl for use in inlining
 	Closgen    int
 	Outerfunc  *Node
 	Fieldtrack []*Type