cl: supports decl: <param>

cl/cltest/cltest.go

@@ -26,6 +26,7 @@ import (
 	"log"
 	"os"
 	"path"
+	"path/filepath"
 	"strings"
 	"testing"
 
@@ -74,7 +75,7 @@ func decodeLinkFile(llFile string) (data []byte, err error) {
 		return
 	}
 	defer zipf.Close()
-	f, err := zipf.Open("llgo_autogen.ll")
+	f, err := zipf.Open(filepath.Base(llFile))
 	if err != nil {
 		return
 	}

cl/import.go

@@ -105,6 +105,8 @@ func pkgKind(v string) (int, string) {
 			return PkgLinkExtern, v[5:]
 		} else if strings.HasPrefix(v, "py.") { // "py.<module>"
 			return PkgPyModule, v[3:]
+		} else if strings.HasPrefix(v, "decl:") { // "decl: <param>"
+			return PkgDeclOnly, v[5:]
 		}
 	}
 	return PkgLLGo, ""