go/types, cmd/compile/internal/types2: minor adjustments (cleanups)

go/types:
- gofmt a couple of files

types2:
- add loong64 to sizes list (present in go/types)
- fix a type in validtype.go
- co-locate an accessor with others in typeparam.go

This changes further reduce discrepancy between types2 and go/types.

Change-Id: I2e6a09f1c4b8dbc947c48af13031ff58a2bc6f4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/460996
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>

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

@@ -17,6 +17,7 @@ var gccgoArchSizes = map[string]*StdSizes{
 	"arm64":       {8, 8},
 	"arm64be":     {8, 8},
 	"ia64":        {8, 8},
+	"loong64":     {8, 8},
 	"m68k":        {4, 2},
 	"mips":        {4, 8},
 	"mipsle":      {4, 8},

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

@@ -24,9 +24,6 @@ type TypeParam struct {
 	bound Type      // any type, but underlying is eventually *Interface for correct programs (see TypeParam.iface)
 }
 
-// Obj returns the type name for the type parameter t.
-func (t *TypeParam) Obj() *TypeName { return t.obj }
-
 // NewTypeParam returns a new TypeParam. Type parameters may be set on a Named
 // or Signature type by calling SetTypeParams. Setting a type parameter on more
 // than one type will result in a panic.
@@ -59,6 +56,9 @@ func (check *Checker) newTypeParam(obj *TypeName, constraint Type) *TypeParam {
 	return typ
 }
 
+// Obj returns the type name for the type parameter t.
+func (t *TypeParam) Obj() *TypeName { return t.obj }
+
 // Index returns the index of the type param within its param list, or -1 if
 // the type parameter has not yet been bound to a type.
 func (t *TypeParam) Index() int {

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

@@ -198,7 +198,7 @@ func makeObjList(tlist []*Named) []Object {
 //         nest = A[A[string]]->B[P]
 //         path = A[A[string]]->B[P]
 //
-// Eventutally we reach the type parameter P of type B (P₂):
+// Eventually we reach the type parameter P of type B (P₂):
 //
 //   P₂
 //         nest = A[A[string]]->B[P]

src/go/types/testdata/manual.go

@@ -6,4 +6,3 @@
 // without source arguments. Use for one-off debugging.
 
 package p
-