[nvptx] gcc/testsuite/gcc.target/nvptx/

We don't claim to support "K&R C" for nvptx, but needed this corresponding
functionality ("incomplete prototypes") to support the Fortran
libgomp/openacc_lib.h file.

	gcc/testsuite/
	* gcc.target/nvptx/nvptx.exp: New file.
	* gcc.target/nvptx/proto-1.c: Likewise.

From-SVN: r224822

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2015-06-23  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* gcc.target/nvptx/nvptx.exp: New file.
+	* gcc.target/nvptx/proto-1.c: Likewise.
+
 2015-06-23  Bin Cheng  <bin.cheng@arm.com>
 
 	PR tree-optimization/66449

gcc/testsuite/gcc.target/nvptx/nvptx.exp

@@ -0,0 +1,42 @@
+# Specific regression driver for nvptx.
+# Copyright (C) 2015 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 a nvptx target.
+if ![istarget nvptx*-*-*] then {
+  return
+}
+
+# Load support procs.
+load_lib gcc-dg.exp
+
+# If a testcase doesn't have special options, use these.
+global DEFAULT_CFLAGS
+if ![info exists DEFAULT_CFLAGS] then {
+    set DEFAULT_CFLAGS " -ansi -pedantic-errors"
+}
+
+# Initialize `dg'.
+dg-init
+
+# Main loop.
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[cS\]]] \
+	"" $DEFAULT_CFLAGS
+
+# All done.
+dg-finish

gcc/testsuite/gcc.target/nvptx/proto-1.c

@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+
+int f(void)
+{
+  const int dev = 4;
+
+  /* Check that without an explicit prototype, we deduce from call site the
+     signature for the (mandatory in PTX) prototype.  */
+  /* extern int acc_on_device_(int *); */
+  /* { dg-final { scan-assembler-not "\\\.callprototype" } } */
+  /* { dg-final { scan-assembler "\\\.extern \\\.func \\\(\[^,\n\r\]+\\\)acc_on_device_ \\\(\[^,\n\r\]+\\\);" } } */
+  return !acc_on_device_(&dev);
+}