2007-10-08  Luis Machado  <luisgpm@br.ibm.com>

    * gdb.opt/clobbered-registers-O2.c: New testcase source file.
    * gdb.opt/clobbered-registers-O2.exp: New testcase expect file.

Index: gdb/testsuite/gdb.opt/clobbered-registers-O2.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb/testsuite/gdb.opt/clobbered-registers-O2.c	2007-10-08 09:36:28.000000000 -0700
@@ -0,0 +1,44 @@
+/* This file is part of GDB, the GNU debugger.
+
+   Copyright 2007 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+   Please email any bugs, comments, and/or additions to this file to:
+   bug-gdb@prep.ai.mit.edu  */
+
+#ifndef __GNUC__
+#define __attribute__(x)
+#endif
+
+unsigned * __attribute__((noinline))
+start_sequence (unsigned * x, unsigned * y)
+{
+	return (unsigned *)0xdeadbeef;
+};
+
+unsigned __attribute__((noinline))
+gen_movsd (unsigned * operand0, unsigned * operand1)
+{
+	return *start_sequence(operand0, operand1);
+}
+
+int main(void)
+{
+  unsigned x, y;
+
+  x = 13;
+  y = 14;
+  return (int)gen_movsd (&x, &y);
+}
Index: gdb/testsuite/gdb.opt/clobbered-registers-O2.exp
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb/testsuite/gdb.opt/clobbered-registers-O2.exp	2007-10-08 11:20:17.000000000 -0700
@@ -0,0 +1,56 @@
+# Copyright 2007 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 2 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 this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# This file is part of the gdb testsuite.
+
+if $tracelevel {
+    strace $tracelevel
+}
+
+# Test displaying call clobbered registers in optimized binaries for ppc.
+# GDB should not show incorrect values.
+
+set prms_id 0
+set bug_id 0
+
+set testfile "clobbered-registers-O2"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+set compile_flags "debug optimize=-O2"
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable ${compile_flags}] != "" } {
+    untested clobbered-registers-O2.exp
+    return -1
+}
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+if ![runto_main] then {
+    perror "Couldn't run to breakpoint"
+    continue
+}
+
+gdb_test "b start_sequence" ".*Breakpoint 2 at.*line 29.*" \
+  "Insert breakpoint at problematic function"
+
+gdb_test continue ".*Breakpoint 2.*in start_sequence.*" \
+  "Run until problematic function"
+
+gdb_test backtrace ".*operand0=<value optimized out>.*operand1=<value optimized out>.*" \
+  "Check value of call clobbered registers"