tests: XFAIL/UNSUPPORTED tests on Windows

Now that we are building the python bindings on Windows once more, the
extended testsuite is running.  Mark a few failing tests and skip a few
tests which hang.  This should at least bring the bot back to green
without reverting the Python changes which are an improvement for the
build system and enable another ~35% of the test suite which was
previously disabled.

lldb/packages/Python/lldbsuite/test/commands/settings/TestSettings.py

@@ -58,6 +58,7 @@ class SettingsCommandTestCase(TestBase):
                              '[3]: "b"',
                              '[4]: "c"'])
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr44430")
     def test_replace_target_run_args(self):
         """Test that 'replace target.run-args' works."""
         # Set the run-args and then replace the index-0 element.
@@ -106,6 +107,7 @@ class SettingsCommandTestCase(TestBase):
                     substrs=["term-width (int) = 70"])
 
     # rdar://problem/10712130
+    @skipIf(oslist=["windows"], bugnumber="llvm.org/pr44431")
     def test_set_frame_format(self):
         """Test that 'set frame-format' with a backtick char in the format string works as well as fullpath."""
         self.build()
@@ -356,6 +358,7 @@ class SettingsCommandTestCase(TestBase):
                     'thread-format (format-string) = "abc def   "')
         self.runCmd('settings clear thread-format')
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr44430")
     def test_settings_with_trailing_whitespace(self):
 
         # boolean

lldb/packages/Python/lldbsuite/test/functionalities/breakpoint/breakpoint_command/TestBreakpointCommand.py

@@ -22,6 +22,7 @@ class BreakpointCommandTestCase(TestBase):
         self.build()
         self.breakpoint_command_sequence()
 
+    @skipIf(oslist=["windows"], bugnumber="llvm.org/pr44431")
     def test_script_parameters(self):
         """Test a sequence of breakpoint command add, list, and delete."""
         self.build()

lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile

@@ -6,12 +6,13 @@ endif
 
 ifeq "$(OS)" "Darwin"
     LD_EXTRAS = -Xlinker -dead_strip
-else ifeq "$(OS)" "Windows_NT"
-    CFLAGS_EXTRAS += /Gw /Gy
-    LD_EXTRAS = -Xlinker /OPT:REF
 else
     CFLAGS_EXTRAS += -fdata-sections -ffunction-sections
-    LD_EXTRAS = -Wl,--gc-sections
+    ifeq "$(OS)" "Windows_NT"
+        LD_EXTRAS = -Xlinker /OPT:REF
+    else
+        LD_EXTRAS = -Wl,--gc-sections
+    endif
 endif
 
 MAKE_DSYM := NO

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

@@ -14,6 +14,7 @@ class DeadStripTestCase(TestBase):
 
     mydir = TestBase.compute_mydir(__file__)
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr44429")
     def test(self):
         """Test breakpoint works correctly with dead-code stripping."""
         self.build()

lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py

@@ -171,6 +171,7 @@ class SourceManagerTestCase(TestBase):
         self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY,
                     substrs=['Hello world'])
 
+    @skipIf(oslist=["windows"], bugnumber="llvm.org/pr44431")
     def test_modify_source_file_while_debugging(self):
         """Modify a source file while debugging the executable."""
         self.build()
@@ -236,6 +237,7 @@ class SourceManagerTestCase(TestBase):
             SOURCE_DISPLAYED_CORRECTLY,
             substrs=['Hello lldb'])
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr44432")
     def test_set_breakpoint_with_absolute_path(self):
         self.build()
         hidden = self.getBuildArtifact("hidden")