Increase specificity by using the correct unit sizes. KBytes is an
abbreviation for kB, 1000 bytes, and the hardware industry as well as
several operating systems have now switched to using 1000 byte kBs.

If this change is acceptable, sometimes GitHub mangles merges to use the
original email of the account. $dayjob asks contributions have my work
email. Thanks!

Recognize the visionOS Triple::OSType::XROS os type. Some of these have
already been landed on main, but I reviewed the downstream sources and
there were a few that still needed to be landed upstream.

This patch adds support for setting/clearing hardware watchpoints and
breakpoints on LoongArch 64-bit hardware.

Refer to the following document for the hw break/watchpoint:
https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#control-and-status-registers-related-to-watchpoints

Fix Failed Tests:
  lldb-shell :: Subprocess/clone-follow-child-wp.test
  lldb-shell :: Subprocess/clone-follow-parent-wp.test
  lldb-shell :: Subprocess/fork-follow-child-wp.test
  lldb-shell :: Subprocess/fork-follow-parent-wp.test
  lldb-shell :: Subprocess/vfork-follow-child-wp.test
  lldb-shell :: Subprocess/vfork-follow-parent-wp.test
  lldb-shell :: Watchpoint/ExpressionLanguage.test

Depends on: #118043

Reviewed By: SixWeining

Pull Request: https://github.com/llvm/llvm-project/pull/118770

This patch makes gdb-server sends only GDB RSP supported error codes
during vFile:open and vFile:unlink handling.

Note that StringRef::equals has been deprecated in favor of
operator==(StringRef, StringRef).

In Android API level 23 and above, dynamic loader is able to load .so file
directly from APK, which is zip file.
https://android.googlesource.com/platform/bionic/+/master/
android-changes-for-ndk-developers.md#
opening-shared-libraries-directly-from-an-apk

The .so file is page aligned and uncompressed, so
ObjectFileELF::GetModuleSpecifications works with .so file offset and size
directly from zip file without extracting it. (D152757)

GDBRemoteCommunicationServerCommon::GetModuleInfo returns a module spec to LLDB
with "zip_path!/so_path" file spec, which is passed through from Android
dynamic loader, and the .so file offset and size.

PlatformAndroid::DownloadModuleSlice uses 'shell dd' to download the .so file
slice from the zip file with the .so file offset and size.

Differential Revision: https://reviews.llvm.org/D152759

The qHostInfo packet in the gdb-remote communication protocol specifies
that distribution_id can be set, so lldb handles that. But we store that
in the ArchSpec representing the "Host" platform (whatever platform the
debug server is running on). This field is otherwise unused in ArchSpec,
so it would be a lot easier if we stored that information at the
gdb-remote communication layer.

Sidenote: The distribution_id field is currently unused but I did not
want to remove it in case some folks found it useful (e.g. in downstream
forks).

Differential Revision: https://reviews.llvm.org/D149697

I also ran `git clang-format` to get the headers in the right order for
the new location, which has changed the order of other headers in two
files.

This patch replaces (llvm::|)Optional< with std::optional<.  I'll post
a separate patch to clean up the "using" declarations, #include
"llvm/ADT/Optional.h", etc.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

This patch adds #include <optional> to those files containing
llvm::Optional<...> or Optional<...>.

I'll post a separate patch to actually replace llvm::Optional with
std::optional.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716