Perf test case: skip-prologue

This patch add a perf test case on skip-prologue by inserting
breakpoints on two functions many times, in order to exercise
skip-prologue.

gdb/testsuite:

2013-12-15  Yao Qi  <yao@codesourcery.com>

	* gdb.perf/skip-prologue.c: New.
	* gdb.perf/skip-prologue.exp: New.
	* gdb.perf/skip-prologue.py: New.

1 files changed, 42 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.perf/skip-prologue.py b/gdb/testsuite/gdb.perf/skip-prologue.py
new file mode 100644
index 0000000..0c71e43
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/skip-prologue.py
@@ -0,0 +1,42 @@
+# Copyright (C) 2013 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/>.
+
+# This test case is to test the speed of GDB when it is analyzing the
+# function prologue.
+
+from perftest import perftest
+
+class SkipPrologue(perftest.TestCaseWithBasicMeasurements):
+    def __init__(self, count):
+        super(SkipPrologue, self).__init__("skip-prologue")
+        self.count = count
+
+    def _test(self):
+        for _ in range(1, self.count):
+            # Insert breakpoints on function f1 and f2.
+            bp1 = gdb.Breakpoint("f1")
+            bp2 = gdb.Breakpoint("f2")
+            # Remove them.
+            bp1.delete()
+            bp2.delete()
+
+    def warm_up(self):
+        self._test()
+
+    def execute_test(self):
+        for i in range(1, 4):
+            gdb.execute("set code-cache off")
+            gdb.execute("set code-cache on")
+            self.measure.measure(self._test, i)