[dev.typeparams] cmd/compile: rename (types2.Inferred.)Targs to TArgs

This is consistent with Named.TArgs.

This is a straight-forward port of https://golang.org/cl/321289
plus the necessary compiler noder changes.

Change-Id: I50791e5abe0d7f294293bed65cebc8dde8bf8c06
Reviewed-on: https://go-review.googlesource.com/c/go/+/325010
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>

src/cmd/compile/internal/noder/expr.go

@@ -111,11 +111,11 @@ func (g *irgen) expr0(typ types2.Type, expr syntax.Expr) ir.Node {
 		// The key for the Inferred map is the CallExpr (if inferring
 		// types required the function arguments) or the IndexExpr below
 		// (if types could be inferred without the function arguments).
-		if inferred, ok := g.info.Inferred[expr]; ok && len(inferred.Targs) > 0 {
+		if inferred, ok := g.info.Inferred[expr]; ok && len(inferred.TArgs) > 0 {
 			// This is the case where inferring types required the
 			// types of the function arguments.
-			targs := make([]ir.Node, len(inferred.Targs))
-			for i, targ := range inferred.Targs {
+			targs := make([]ir.Node, len(inferred.TArgs))
+			for i, targ := range inferred.TArgs {
 				targs[i] = ir.TypeNode(g.typ(targ))
 			}
 			if fun.Op() == ir.OFUNCINST {
@@ -137,12 +137,12 @@ func (g *irgen) expr0(typ types2.Type, expr syntax.Expr) ir.Node {
 	case *syntax.IndexExpr:
 		var targs []ir.Node
 
-		if inferred, ok := g.info.Inferred[expr]; ok && len(inferred.Targs) > 0 {
+		if inferred, ok := g.info.Inferred[expr]; ok && len(inferred.TArgs) > 0 {
 			// This is the partial type inference case where the types
 			// can be inferred from other type arguments without using
 			// the types of the function arguments.
-			targs = make([]ir.Node, len(inferred.Targs))
-			for i, targ := range inferred.Targs {
+			targs = make([]ir.Node, len(inferred.TArgs))
+			for i, targ := range inferred.TArgs {
 				targs[i] = ir.TypeNode(g.typ(targ))
 			}
 		} else if _, ok := expr.Index.(*syntax.ListExpr); ok {

src/cmd/compile/internal/types2/api.go

@@ -361,7 +361,7 @@ func (tv TypeAndValue) HasOk() bool {
 // Inferred reports the inferred type arguments and signature
 // for a parameterized function call that uses type inference.
 type Inferred struct {
-	Targs []Type
+	TArgs []Type
 	Sig   *Signature
 }
 

src/cmd/compile/internal/types2/api_test.go

@@ -514,7 +514,7 @@ func TestInferredInfo(t *testing.T) {
 				panic(fmt.Sprintf("unexpected call expression type %T", call))
 			}
 			if syntax.String(fun) == test.fun {
-				targs = inf.Targs
+				targs = inf.TArgs
 				sig = inf.Sig
 				break
 			}

src/cmd/compile/internal/types2/sanitize.go

@@ -26,9 +26,9 @@ func sanitizeInfo(info *Info) {
 
 	for e, inf := range info.Inferred {
 		changed := false
-		for i, targ := range inf.Targs {
+		for i, targ := range inf.TArgs {
 			if typ := s.typ(targ); typ != targ {
-				inf.Targs[i] = typ
+				inf.TArgs[i] = typ
 				changed = true
 			}
 		}