1 files changed, 94 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/benchmarks/disassembly/TestXcode41Vs42GDBDisassembly.py b/packages/Python/lldbsuite/test/benchmarks/disassembly/TestXcode41Vs42GDBDisassembly.py
new file mode 100644
index 000000000000..745e7b6a8c3b
--- /dev/null
+++ b/packages/Python/lldbsuite/test/benchmarks/disassembly/TestXcode41Vs42GDBDisassembly.py
@@ -0,0 +1,94 @@
+"""Disassemble lldb's Driver::MainLoop() functions comparing Xcode 4.1 vs. 4.2's gdb."""
+
+from __future__ import print_function
+
+
+
+import os, sys
+import lldb
+from lldbsuite.test import configuration
+from lldbsuite.test.lldbbench import *
+
+class XCode41Vs42GDBDisassembly(BenchBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        BenchBase.setUp(self)
+        self.gdb_41_exe = '/Xcode41/usr/bin/gdb'
+        self.gdb_42_exe = '/Developer/usr/bin/gdb'
+        self.exe = lldbtest_config.lldbExec
+        self.function = 'Driver::MainLoop()'
+        self.gdb_41_avg = None
+        self.gdb_42_avg = None
+        self.count = 5
+
+    @benchmarks_test
+    @no_debug_info_test
+    @expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows")
+    def test_run_41_then_42(self):
+        """Test disassembly on a large function with 4.1 vs. 4.2's gdb."""
+        print()
+        self.run_gdb_disassembly(self.gdb_41_exe, self.exe, self.function, self.count)
+        print("4.1 gdb benchmark:", self.stopwatch)
+        self.gdb_41_avg = self.stopwatch.avg()
+        self.run_gdb_disassembly(self.gdb_42_exe, self.exe, self.function, self.count)
+        print("4.2 gdb benchmark:", self.stopwatch)
+        self.gdb_42_avg = self.stopwatch.avg()
+        print("gdb_42_avg/gdb_41_avg: %f" % (self.gdb_42_avg/self.gdb_41_avg))
+
+    @benchmarks_test
+    @no_debug_info_test
+    @expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows")
+    def test_run_42_then_41(self):
+        """Test disassembly on a large function with 4.1 vs. 4.2's gdb."""
+        print()
+        self.run_gdb_disassembly(self.gdb_42_exe, self.exe, self.function, self.count)
+        print("4.2 gdb benchmark:", self.stopwatch)
+        self.gdb_42_avg = self.stopwatch.avg()
+        self.run_gdb_disassembly(self.gdb_41_exe, self.exe, self.function, self.count)
+        print("4.1 gdb benchmark:", self.stopwatch)
+        self.gdb_41_avg = self.stopwatch.avg()
+        print("gdb_42_avg/gdb_41_avg: %f" % (self.gdb_42_avg/self.gdb_41_avg))
+
+    def run_gdb_disassembly(self, gdb_exe_path, exe, function, count):
+        import pexpect
+        # Set self.child_prompt, which is "(gdb) ".
+        self.child_prompt = '(gdb) '
+        prompt = self.child_prompt
+
+        # So that the child gets torn down after the test.
+        self.child = pexpect.spawn('%s --nx %s' % (gdb_exe_path, exe))
+        child = self.child
+
+        # Turn on logging for what the child sends back.
+        if self.TraceOn():
+            child.logfile_read = sys.stdout
+
+        child.expect_exact(prompt)
+        child.sendline('break %s' % function)
+        child.expect_exact(prompt)
+        child.sendline('run')
+        child.expect_exact(prompt)
+
+        # Reset the stopwatch now.
+        self.stopwatch.reset()
+        for i in range(count):
+            with self.stopwatch:
+                # Disassemble the function.
+                child.sendline('disassemble')
+                child.expect_exact(prompt)
+            child.sendline('next')
+            child.expect_exact(prompt)
+
+        child.sendline('quit')
+        child.expect_exact('The program is running.  Exit anyway?')
+        child.sendline('y')
+        try:
+            self.child.expect(pexpect.EOF)
+        except:
+            pass
+
+        if self.TraceOn():
+            print("gdb disassembly benchmark:", str(self.stopwatch))
+        self.child = None