cmd/compile/internal/importer, gcimporter: use *TypeParam as tparamIn…

…dex map value

This is a map from identifiers to type parameters, use *TypeParam
as map value instead of Type.

Change-Id: Ib006393418c6352bcffc1c6796c5e002c33d9f4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/379634
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

src/cmd/compile/internal/importer/iimport.go

@@ -126,7 +126,7 @@ func ImportData(imports map[string]*types2.Package, data, path string) (pkg *typ
 		typCache: make(map[uint64]types2.Type),
 		// Separate map for typeparams, keyed by their package and unique
 		// name (name with subscript).
-		tparamIndex: make(map[ident]types2.Type),
+		tparamIndex: make(map[ident]*types2.TypeParam),
 	}
 
 	for i, pt := range predeclared {
@@ -202,7 +202,7 @@ type iimporter struct {
 	declData    string
 	pkgIndex    map[*types2.Package]map[string]uint64
 	typCache    map[uint64]types2.Type
-	tparamIndex map[ident]types2.Type
+	tparamIndex map[ident]*types2.TypeParam
 
 	interfaceList []*types2.Interface
 }

src/go/internal/gcimporter/iimport.go

@@ -127,7 +127,7 @@ func iImportData(fset *token.FileSet, imports map[string]*types.Package, dataRea
 		typCache: make(map[uint64]types.Type),
 		// Separate map for typeparams, keyed by their package and unique
 		// name (name with subscript).
-		tparamIndex: make(map[ident]types.Type),
+		tparamIndex: make(map[ident]*types.TypeParam),
 
 		fake: fakeFileSet{
 			fset:  fset,
@@ -207,7 +207,7 @@ type iimporter struct {
 	declData    []byte
 	pkgIndex    map[*types.Package]map[string]uint64
 	typCache    map[uint64]types.Type
-	tparamIndex map[ident]types.Type
+	tparamIndex map[ident]*types.TypeParam
 
 	fake          fakeFileSet
 	interfaceList []*types.Interface