While fixing bugs in the x86_64 LC_THREAD parser in ObjectFileMachO, I
noticed that the other LC_THREAD parsers are all less clear than they
should be.

To recap, a Mach-O LC_THREAD load command has a byte size for the entire
payload. Within the payload, there will be one or more register sets
provided. A register set starts with a UInt32 "flavor", the type of
register set defined in the system headers, and a UInt32 "count", the
number of UInt32 words of memory for this register set. After one
register set, there may be additional sets. A parser can skip an unknown
register set flavor by using the count field to get to the next register
set. When the total byte size of the LC_THREAD load command has been
parsed, it is completed.

This patch fixes the riscv/arm/arm64 LC_THREAD parsers to use the total
byte size as the exit condition, and to skip past unrecognized register
sets, instead of stopping parsing.

Instead of fixing the i386 corefile support, I removed it. The last
macOS that supported 32-bit Intel code was macOS 10.14 in 2018. I also
removed i386 KDP support, 32-bit intel kernel debugging hasn't been
supported for even longer than that.

It would be preferable to do these things separately, but I couldn't
bring myself to update the i386 LC_THREAD parser, and it required very
few changes to remove this support entirely.

Errors will get "error:" prefixes automatically so this is not needed.

Identical PR to: https://github.com/llvm/llvm-project/pull/134563
Previous PR was approved and landed but broke the build due to bad
merge.
Manually resolve the merge conflict and try to land again.

Co-authored-by: George Hu <georgehuyubo@gmail.com>

This reverts commit 070a4ae2f9bcf6967a7147ed2972f409eaa7d3a6.

Multiple buildbot failures have been reported:
https://github.com/llvm/llvm-project/pull/134563

The build fails with:

  lldb/source/Target/Statistics.cpp:75:39: error: use of undeclared
  identifier 'num_symbols_loaded'

In statistics, add locate time for each module in statistics, we time
the PluginManager::LocateExecutableSymbolFile and
PluginManager::LocateExecutableObjectFile call, save the duration for
the succeeded symbol locator plugin in the Module class as a map.
New key being added:
Module level: "_symbolLocatorTime_"
Summary level: "_totalSymbolLocatorTime_"
which would be a map of symbol_locator_plugin_name to time.

Sample statistic dump output after this change:

```
Command: statistics dump
===============Output===============
{
  "commands": {
    "command container add": 1,
    "command script add": 51,
    "command script import": 59,
    "statistics dump": 1,
    "target create": 1,
    "type summary add": 36,
    "type synthetic add": 21
  },
  "memory": {
    "strings": {
      "bytesTotal": 2801664,
      "bytesUnused": 1704256,
      "bytesUsed": 1097408
    }
  },
  "modules": [
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      "debugInfoEnabled": true,
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      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0.61934599999999995,
      "debugInfoParseTime": 0.00033100000000000002,
      "identifier": 94868115726768,
      "path": "/home/hyubo/.cache/llvm-debuginfod/client/llvmcache-720c9a0f5ba8b460a1524a25597226f0fa551f71-c4crasher",
      "symbolLocatorTime": {
        "debuginfod": 1.4547020000000002
      },
      "symbolTableIndexTime": 0.0035370000000000002,
      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.0055040000000000002,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--linux",
      "uuid": "720C9A0F-5BA8-B460-A152-4A25597226F0-FA551F71"
    },
    {
      "debugInfoByteSize": 0,
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      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
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      "debugInfoParseTime": 0,
      "identifier": 94868111142256,
      "path": "[vdso](0x00007ffd41c59000)",
      "symbolLocatorTime": {
        "debuginfod": 0.80597700000000005
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      "symbolTableIndexTime": 2.8e-05,
      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.00037300000000000001,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--linux",
      "uuid": "4D1F38BD-BD34-DFB3-C9A5-B49A2A912219-AC713763"
    },
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      "debugInfoByteSize": 0,
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      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868116162096,
      "path": "/usr/local/fbcode/platform010/lib/libc.so.6",
      "symbolLocatorTime": {
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      "symbolTableStripped": false,
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      "uuid": "ACE9DF01-8872-3A35-6D14-3C92527EF739-4BE32C75"
    },
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      "debugInfoByteSize": 0,
      "debugInfoEnabled": false,
      "debugInfoHadIncompleteTypes": false,
      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868111990032,
      "path": "/usr/local/fbcode/platform010/lib/libm.so.6",
      "symbolLocatorTime": {
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      },
      "symbolTableIndexTime": 0.0023960000000000001,
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      "symbolTableParseTime": 0.021706,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--linux",
      "uuid": "85932B54-0DE7-4FC1-23B0-FB09AD1A5A61-8E1098B7"
    },
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      "debugInfoByteSize": 0,
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      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868116399488,
      "path": "/usr/local/fbcode/platform010/lib/libmvec.so.1",
      "symbolLocatorTime": {
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      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.0034429999999999999,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--linux",
      "uuid": "4537CA22-8E6E-495B-7A03-FC2CEDCAD71C-8A7B2067"
    },
    {
      "debugInfoByteSize": 0,
      "debugInfoEnabled": false,
      "debugInfoHadIncompleteTypes": false,
      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868111778368,
      "path": "/usr/local/fbcode/platform010/lib/libatomic.so.1",
      "symbolLocatorTime": {
        "debuginfod": 0.83268299999999995
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      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.0026640000000000001,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--",
      "uuid": "F90F9111-BBD1-C2A9-972A-34EB75ABE62E-3BDED9CF"
    },
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      "debugInfoByteSize": 0,
      "debugInfoEnabled": false,
      "debugInfoHadIncompleteTypes": false,
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      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868116403264,
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      "symbolLocatorTime": {
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      "symbolTableParseTime": 0.0033,
      "symbolTableSavedToCache": false,
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      "triple": "x86_64--",
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    },
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      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868113225328,
      "path": "/usr/local/fbcode/platform010/lib/libstdc++.so.6",
      "symbolLocatorTime": {
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      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.081374000000000002,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--",
      "uuid": "C9DAEE53-F607-981B-6BED-F2042833BFC7-71A1E66C"
    },
    {
      "debugInfoByteSize": 0,
      "debugInfoEnabled": false,
      "debugInfoHadIncompleteTypes": false,
      "debugInfoHadVariableErrors": false,
      "debugInfoIndexLoadedFromCache": false,
      "debugInfoIndexSavedToCache": false,
      "debugInfoIndexTime": 0,
      "debugInfoParseTime": 0,
      "identifier": 94868113600960,
      "path": "/usr/local/fbcode/platform010/lib/ld.so",
      "symbolLocatorTime": {
        "debuginfod": 0.48382199999999997
      },
      "symbolTableIndexTime": 0.00054799999999999998,
      "symbolTableLoadedFromCache": false,
      "symbolTableParseTime": 0.0057219999999999997,
      "symbolTableSavedToCache": false,
      "symbolTableStripped": false,
      "triple": "x86_64--linux",
      "uuid": "CCA86CF4-E4FF-42C8-7056-2F7D8B83AEE0-530B4095"
    }
  ],
  "targets": [
    {
      "breakpoints": [],
      "dyldPluginName": "dump-modulelist-dyld",
      "expressionEvaluation": {
        "failures": 0,
        "successes": 0
      },
      "frameVariable": {
        "failures": 0,
        "successes": 0
      },
      "mismatchCoredumpModuleCount": 0,
      "moduleIdentifiers": [
        94868115726768,
        94868111142256,
        94868116162096,
        94868111990032,
        94868116399488,
        94868111778368,
        94868116403264,
        94868113225328,
        94868113600960
      ],
      "signals": [
        {
          "SIGABRT": 1
        }
      ],
      "sourceMapDeduceCount": 0,
      "sourceRealpathAttemptCount": 0,
      "sourceRealpathCompatibleCount": 0,
      "stopCount": 1,
      "summaryProviderStatistics": [],
      "targetCreateTime": 4.1999999999999998e-05,
      "totalBreakpointResolveTime": 0,
      "totalSharedLibraryEventHitCount": 0
    }
  ],
  "totalDebugInfoByteSize": 244927,
  "totalDebugInfoEnabled": 1,
  "totalDebugInfoIndexLoadedFromCache": 0,
  "totalDebugInfoIndexSavedToCache": 0,
  "totalDebugInfoIndexTime": 0.61934599999999995,
  "totalDebugInfoParseTime": 0.00033100000000000002,
  "totalModuleCount": 9,
  "totalModuleCountHasDebugInfo": 1,
  "totalModuleCountWithIncompleteTypes": 0,
  "totalModuleCountWithVariableErrors": 0,
  "totalSymbolLocatorTime": {
    "debuginfod": 6.5228070000000002
  },
  "totalSymbolTableIndexTime": 0.059214000000000003,
  "totalSymbolTableParseTime": 0.205928,
  "totalSymbolTableStripped": 0,
  "totalSymbolTablesLoadedFromCache": 0,
  "totalSymbolTablesSavedToCache": 0,
  "transcript": [
    {
      "command": "symsrv",
      "commandArguments": "",
      "commandName": "symsrv",
      "durationInSeconds": 0.00069099999999999999,
      "error": "",
      "output": "",
      "timestampInEpochSeconds": 1744934015
    },
    {
      "command": "settings set symbols.enable-external-lookup true",
      "commandArguments": "symbols.enable-external-lookup true",
      "commandName": "settings set",
      "durationInSeconds": 4.1999999999999998e-05,
      "error": "",
      "output": "",
      "timestampInEpochSeconds": 1744934015
    },
    {
      "command": "settings insert-before plugin.symbol-locator.debuginfod.server-urls 0 https://our.intern.facebook.com/intern/debuginfod",
      "commandArguments": "plugin.symbol-locator.debuginfod.server-urls 0 https://our.intern.facebook.com/intern/debuginfod",
      "commandName": "settings insert-before",
      "durationInSeconds": 5.5999999999999999e-05,
      "error": "",
      "output": "",
      "timestampInEpochSeconds": 1744934015
    },
    {
      "command": "target create --core \"/var/tmp/cores/c4crasher.crasher.1576894\"",
      "commandArguments": "--core \"/var/tmp/cores/c4crasher.crasher.1576894\"",
      "commandName": "target create",
      "durationInSeconds": 6.7297630000000002,
      "error": "",
      "output": "Core file '/var/tmp/cores/c4crasher.crasher.1576894' (x86_64) was loaded.\n",
      "timestampInEpochSeconds": 1744934017
    },
    {
      "command": "fbpaste statistics dump",
      "commandArguments": "statistics dump",
      "commandName": "fbpaste",
      "timestampInEpochSeconds": 1744934055
    },
    {
      "command": "statistics dump",
      "commandArguments": "",
      "commandName": "statistics dump",
      "timestampInEpochSeconds": 1744934055
    }
  ]
}

```

Co-authored-by: George Hu <georgehuyubo@gmail.com>

This reverts commit
https://github.com/llvm/llvm-project/commit/87b7f63a117c340a6d9ca47959335fd7ef6c7ad2,
reapplying

https://github.com/llvm/llvm-project/commit/7e66cf74fb4e6a103f923e34700a7b6f20ac2a9b
with a small (and probably temporary)
change to generate more debug info to help with diagnosing buildbot
issues.

Make StreamAsynchronousIO an unique_ptr instead of a shared_ptr. I tried
passing the class by value, but the llvm::raw_ostream forwarder stored
in the Stream parent class isn't movable and I don't think it's worth
changing that. Additionally, there's a few places that expect a
StreamSP, which are easily created from a StreamUP.

This reverts commit 7e66cf74fb4e6a103f923e34700a7b6f20ac2a9b.

Breaking green dragon:

https://green.lab.llvm.org/job/llvm.org/view/LLDB/job/as-lldb-cmake/19569/testReport/junit/lldb-api/functionalities_reverse-execution/TestReverseContinueWatchpoints_py/

This reverts commit a774de807e56c1147d4630bfec3110c11d41776e.

This is the same changes as last time, plus:
* We load the binary into the target object so that on Windows, we can
resolve the locations of the functions.
* We now assert that each required breakpoint has at least 1 location,
to prevent an issue like that in the future.
* We are less strict about the unsupported error message, because it
prints "error: windows" on Windows instead of "error: gdb-remote".

Reverts llvm/llvm-project#123945

Has failed on the Windows on Arm buildbot:
https://lab.llvm.org/buildbot/#/builders/141/builds/5865
```
********************
Unresolved Tests (2):
  lldb-api :: functionalities/reverse-execution/TestReverseContinueBreakpoints.py
  lldb-api :: functionalities/reverse-execution/TestReverseContinueWatchpoints.py
********************
Failed Tests (1):
  lldb-api :: functionalities/reverse-execution/TestReverseContinueNotSupported.py
```
Reverting while I reproduce locally.