Added a setting that enables saving all .o files from a given JIT expression.

This allows debugging of the JIT and other analyses of the internals of the
expression parser.  I've also added a testcase that verifies that the setting
works correctly when off and on.

llvm-svn: 282434

3 files changed, 76 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/Makefile b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/Makefile
new file mode 100644
index 00000000000..0d70f259501
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+C_SOURCES := main.c
+
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/TestSaveJITObjects.py b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/TestSaveJITObjects.py
new file mode 100644
index 00000000000..3ca7f349ca0
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/TestSaveJITObjects.py
@@ -0,0 +1,57 @@
+"""
+Test that LLDB can emit JIT objects when the appropriate setting is enabled
+"""
+
+from __future__ import print_function
+
+import os
+import time
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+def enumerateJITFiles():
+    return [f for f in os.listdir(os.getcwd()) if f.startswith("jit")]
+    
+def countJITFiles():
+    return len(enumerateJITFiles())
+
+def cleanJITFiles():
+    for j in enumerateJITFiles():
+        os.remove(j)
+    return
+
+class SaveJITObjectsTestCase(TestBase):
+    mydir = TestBase.compute_mydir(__file__)
+
+    def test_save_jit_objects(self):
+        self.build()
+        src_file = "main.c"
+        src_file_spec = lldb.SBFileSpec(src_file)
+  
+        exe_path = os.path.join(os.getcwd(), "a.out")
+        target = self.dbg.CreateTarget(exe_path)
+
+        breakpoint = target.BreakpointCreateBySourceRegex(
+            "break", src_file_spec)
+
+        process = target.LaunchSimple(None, None,
+                                      self.get_process_working_directory())
+
+        thread = process.GetSelectedThread()
+        frame = thread.GetSelectedFrame()
+
+        cleanJITFiles()
+        frame.EvaluateExpression("(void*)malloc(0x1)")
+        self.assertTrue(countJITFiles() == 0,
+                        "No files emitted with save-jit-objects=false")
+
+        self.runCmd("settings set target.save-jit-objects true")
+        frame.EvaluateExpression("(void*)malloc(0x1)")
+        jit_files_count = countJITFiles()
+        cleanJITFiles()
+        self.assertTrue(jit_files_count != 0,
+                        "At least one file emitted with save-jit-objects=true")
+
+        process.Kill()
diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/main.c b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/main.c
new file mode 100644
index 00000000000..ec4c943dfe3
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/save_jit_objects/main.c
@@ -0,0 +1,14 @@
+//===-- main.c --------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+int main (int argc, char const *argv[])
+{
+	const char* foo = "Hello world"; // break here
+    return 0;
+}