[PATCH 1/2] alpha: add a g++ testsuite directory

There is no place to put target specific C++ tests for Alpha.  Add the
usual g++.target/alpha driver, modelled after g++.target/m68k.

gcc/testsuite/ChangeLog:

	* g++.target/alpha/alpha.exp: New file.
---
 gcc/testsuite/g++.target/alpha/alpha.exp | 34 ++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 gcc/testsuite/g++.target/alpha/alpha.exp

diff --git ./gcc/testsuite/g++.target/alpha/alpha.exp ./gcc/testsuite/g++.target/alpha/alpha.exp
new file mode 100644
index 00000000000..2db0ec6c825
--- /dev/null
+++ ./gcc/testsuite/g++.target/alpha/alpha.exp
@@ -0,0 +1,34 @@
+#   Copyright (C) 2026 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# GCC testsuite that uses the `dg.exp' driver.
+
+# Exit immediately if this isn't an Alpha target.
+if ![istarget alpha*-*-*] then {
+  return
+}
+
+# Load support procs.
+load_lib g++-dg.exp
+
+# Initialize `dg'.
+dg-init
+
+# Main loop.
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] "" ""
+
+# All done.
+dg-finish
-- 
2.54.0