Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile

@@ -0,0 +1,18 @@
+LEVEL = ../../make
+
+C_SOURCES := main.c
+
+ifeq "$(OS)" ""
+    OS = $(shell uname -s)
+endif
+
+ifeq "$(OS)" "Darwin"
+    LDFLAGS = $(CFLAGS) -Xlinker -dead_strip
+else
+    CFLAGS += -fdata-sections -ffunction-sections
+    LDFLAGS = $(CFLAGS) -Wl,--gc-sections
+endif
+
+MAKE_DSYM := NO
+
+include $(LEVEL)/Makefile.rules

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/TestDeadStrip.py

@@ -0,0 +1,68 @@
+"""
+Test that breakpoint works correctly in the presence of dead-code stripping.
+"""
+
+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
+
+
+class DeadStripTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
+    @expectedFailureAll(debug_info="dwo", bugnumber="llvm.org/pr25087")
+    @expectedFailureAll(
+        oslist=["linux"],
+        debug_info="gmodules",
+        bugnumber="llvm.org/pr27865")
+    # The -dead_strip linker option isn't supported on FreeBSD versions of ld.
+    @skipIfFreeBSD
+    def test(self):
+        """Test breakpoint works correctly with dead-code stripping."""
+        self.build()
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Break by function name f1 (live code).
+        lldbutil.run_break_set_by_symbol(
+            self, "f1", num_expected_locations=1, module_name="a.out")
+
+        # Break by function name f2 (dead code).
+        lldbutil.run_break_set_by_symbol(
+            self, "f2", num_expected_locations=0, module_name="a.out")
+
+        # Break by function name f3 (live code).
+        lldbutil.run_break_set_by_symbol(
+            self, "f3", num_expected_locations=1, module_name="a.out")
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # The stop reason of the thread should be breakpoint (breakpoint #1).
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'a.out`f1',
+                             'stop reason = breakpoint'])
+
+        # The breakpoint should have a hit count of 1.
+        self.expect("breakpoint list -f 1", BREAKPOINT_HIT_ONCE,
+                    substrs=[' resolved, hit count = 1'])
+
+        self.runCmd("continue")
+
+        # The stop reason of the thread should be breakpoint (breakpoint #3).
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+                    substrs=['stopped',
+                             'a.out`f3',
+                             'stop reason = breakpoint'])
+
+        # The breakpoint should have a hit count of 1.
+        self.expect("breakpoint list -f 3", BREAKPOINT_HIT_ONCE,
+                    substrs=[' resolved, hit count = 1'])

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/cmds.txt

@@ -0,0 +1,4 @@
+b main.c:21
+b main.c:41
+lines -shlib a.out main.c
+c

external/llvm-project/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/main.c

@@ -0,0 +1,53 @@
+//===-- main.c --------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include <stdio.h>
+
+
+int f1 (char *s);
+int f2 (char *s);
+int f3 (char *s);
+
+
+// We want f1 to start on line 20
+int f1 (char *s)
+{
+    return printf("f1: %s\n", s);
+}
+
+
+
+
+
+// We want f2 to start on line 30, this should get stripped
+int f2 (char *s)
+{
+    return printf("f2: %s\n", s);
+}
+
+
+
+
+
+// We want f3 to start on line 40
+int f3 (char *s)
+{
+    return printf("f3: %s\n", s);
+}
+
+
+
+
+
+// We want main to start on line 50
+int main (int argc, const char * argv[])
+{
+    f1("carp");
+    f3("dong");
+    return 0;
+}