From 219672b8dd06c4765185fa3161c98437d49b4a1b Mon Sep 17 00:00:00 2001
From: James Farrell <jamesfarrell@google.com>
Date: Mon, 6 Dec 2021 17:41:26 +0000
Subject: [PATCH] Revert "Revert "Use VersionTuple for parsing versions in
 Triple, fixing issues that caused the original change to be reverted. This
 makes it possible to distinguish between "16" and "16.0" after parsing, which
 previously was not possible.""

This reverts commit 63a6348cad6caccf285c1661bc60d8ba5a40c972.

Differential Revision: https://reviews.llvm.org/D115254
---
 clang/lib/ARCMigrate/ARCMT.cpp                |   4 +-
 clang/lib/Basic/Targets/OSTargets.cpp         |  72 ++++----
 clang/lib/Basic/Targets/OSTargets.h           |  48 +++---
 clang/lib/Basic/Targets/X86.h                 |   5 +-
 clang/lib/Driver/ToolChains/Darwin.cpp        |  40 ++---
 clang/lib/Driver/ToolChains/Linux.cpp         |  13 +-
 clang/lib/Driver/ToolChains/MSVC.cpp          |  10 +-
 clang/lib/Driver/ToolChains/NetBSD.cpp        |  23 ++-
 clang/test/Sema/attr-availability-android.c   |   2 +-
 clang/test/Sema/attr-availability.c           |  10 +-
 clang/test/Sema/availability-guard-format.mm  |   2 +-
 clang/test/SemaObjC/attr-availability.m       |  20 +--
 .../SemaObjC/property-deprecated-warning.m    |  14 +-
 .../unguarded-availability-maccatalyst.m      |   8 +-
 clang/test/SemaObjC/unguarded-availability.m  |  36 ++--
 llvm/include/llvm/ADT/Triple.h                |  58 +++----
 llvm/lib/Analysis/TargetLibraryInfo.cpp       |   5 +-
 llvm/lib/MC/MCStreamer.cpp                    |  25 ++-
 llvm/lib/Support/Triple.cpp                   | 119 +++++---------
 llvm/lib/Target/AArch64/AArch64Subtarget.cpp  |   4 +-
 llvm/lib/Target/AArch64/AArch64Subtarget.h    |   3 +-
 llvm/lib/Target/X86/X86Subtarget.h            |   3 +-
 llvm/unittests/ADT/TripleTest.cpp             | 154 +++++++++---------
 llvm/unittests/Support/Host.cpp               |  63 ++++---
 24 files changed, 326 insertions(+), 415 deletions(-)

diff --git a/clang/lib/ARCMigrate/ARCMT.cpp b/clang/lib/ARCMigrate/ARCMT.cpp
index 4851c434d765..68ee7c59270e 100644
--- a/clang/lib/ARCMigrate/ARCMT.cpp
+++ b/clang/lib/ARCMigrate/ARCMT.cpp
@@ -162,9 +162,7 @@ static bool HasARCRuntime(CompilerInvocation &origCI) {
     return triple.getOSMajorVersion() >= 11;
 
   if (triple.getOS() == llvm::Triple::MacOSX) {
-    unsigned Major, Minor, Micro;
-    triple.getOSVersion(Major, Minor, Micro);
-    return Major > 10 || (Major == 10 && Minor >= 7);
+    return triple.getOSVersion() >= VersionTuple(10, 7);
   }
 
   return false;
diff --git a/clang/lib/Basic/Targets/OSTargets.cpp b/clang/lib/Basic/Targets/OSTargets.cpp
index 53748bf067cd..695cbafe3655 100644
--- a/clang/lib/Basic/Targets/OSTargets.cpp
+++ b/clang/lib/Basic/Targets/OSTargets.cpp
@@ -48,12 +48,12 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
     Builder.defineMacro("_REENTRANT");
 
   // Get the platform type and version number from the triple.
-  unsigned Maj, Min, Rev;
+  VersionTuple OsVersion;
   if (Triple.isMacOSX()) {
-    Triple.getMacOSXVersion(Maj, Min, Rev);
+    Triple.getMacOSXVersion(OsVersion);
     PlatformName = "macos";
   } else {
-    Triple.getOSVersion(Maj, Min, Rev);
+    OsVersion = Triple.getOSVersion();
     PlatformName = llvm::Triple::getOSTypeName(Triple.getOS());
     if (PlatformName == "ios" && Triple.isMacCatalystEnvironment())
       PlatformName = "maccatalyst";
@@ -63,29 +63,29 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
   // generating code for Win32 ABI. No need to emit
   // __ENVIRONMENT_XX_OS_VERSION_MIN_REQUIRED__.
   if (PlatformName == "win32") {
-    PlatformMinVersion = VersionTuple(Maj, Min, Rev);
+    PlatformMinVersion = OsVersion;
     return;
   }
 
   // Set the appropriate OS version define.
   if (Triple.isiOS()) {
-    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
+    assert(OsVersion < VersionTuple(100) && "Invalid version!");
     char Str[7];
-    if (Maj < 10) {
-      Str[0] = '0' + Maj;
-      Str[1] = '0' + (Min / 10);
-      Str[2] = '0' + (Min % 10);
-      Str[3] = '0' + (Rev / 10);
-      Str[4] = '0' + (Rev % 10);
+    if (OsVersion.getMajor() < 10) {
+      Str[0] = '0' + OsVersion.getMajor();
+      Str[1] = '0' + (OsVersion.getMinor().getValueOr(0) / 10);
+      Str[2] = '0' + (OsVersion.getMinor().getValueOr(0) % 10);
+      Str[3] = '0' + (OsVersion.getSubminor().getValueOr(0) / 10);
+      Str[4] = '0' + (OsVersion.getSubminor().getValueOr(0) % 10);
       Str[5] = '\0';
     } else {
       // Handle versions >= 10.
-      Str[0] = '0' + (Maj / 10);
-      Str[1] = '0' + (Maj % 10);
-      Str[2] = '0' + (Min / 10);
-      Str[3] = '0' + (Min % 10);
-      Str[4] = '0' + (Rev / 10);
-      Str[5] = '0' + (Rev % 10);
+      Str[0] = '0' + (OsVersion.getMajor() / 10);
+      Str[1] = '0' + (OsVersion.getMajor() % 10);
+      Str[2] = '0' + (OsVersion.getMinor().getValueOr(0) / 10);
+      Str[3] = '0' + (OsVersion.getMinor().getValueOr(0) % 10);
+      Str[4] = '0' + (OsVersion.getSubminor().getValueOr(0) / 10);
+      Str[5] = '0' + (OsVersion.getSubminor().getValueOr(0) % 10);
       Str[6] = '\0';
     }
     if (Triple.isTvOS())
@@ -95,13 +95,13 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
                           Str);
 
   } else if (Triple.isWatchOS()) {
-    assert(Maj < 10 && Min < 100 && Rev < 100 && "Invalid version!");
+    assert(OsVersion < VersionTuple(10) && "Invalid version!");
     char Str[6];
-    Str[0] = '0' + Maj;
-    Str[1] = '0' + (Min / 10);
-    Str[2] = '0' + (Min % 10);
-    Str[3] = '0' + (Rev / 10);
-    Str[4] = '0' + (Rev % 10);
+    Str[0] = '0' + OsVersion.getMajor();
+    Str[1] = '0' + (OsVersion.getMinor().getValueOr(0) / 10);
+    Str[2] = '0' + (OsVersion.getMinor().getValueOr(0) % 10);
+    Str[3] = '0' + (OsVersion.getSubminor().getValueOr(0) / 10);
+    Str[4] = '0' + (OsVersion.getSubminor().getValueOr(0) % 10);
     Str[5] = '\0';
     Builder.defineMacro("__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__", Str);
   } else if (Triple.isMacOSX()) {
@@ -109,22 +109,22 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
     // define (because we only get a single digit for the minor and micro
     // revision numbers). So, we limit them to the maximum representable
     // version.
-    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
+    assert(OsVersion < VersionTuple(100) && "Invalid version!");
     char Str[7];
-    if (Maj < 10 || (Maj == 10 && Min < 10)) {
-      Str[0] = '0' + (Maj / 10);
-      Str[1] = '0' + (Maj % 10);
-      Str[2] = '0' + std::min(Min, 9U);
-      Str[3] = '0' + std::min(Rev, 9U);
+    if (OsVersion < VersionTuple(10, 10)) {
+      Str[0] = '0' + (OsVersion.getMajor() / 10);
+      Str[1] = '0' + (OsVersion.getMajor() % 10);
+      Str[2] = '0' + std::min(OsVersion.getMinor().getValueOr(0), 9U);
+      Str[3] = '0' + std::min(OsVersion.getSubminor().getValueOr(0), 9U);
       Str[4] = '\0';
     } else {
       // Handle versions > 10.9.
-      Str[0] = '0' + (Maj / 10);
-      Str[1] = '0' + (Maj % 10);
-      Str[2] = '0' + (Min / 10);
-      Str[3] = '0' + (Min % 10);
-      Str[4] = '0' + (Rev / 10);
-      Str[5] = '0' + (Rev % 10);
+      Str[0] = '0' + (OsVersion.getMajor() / 10);
+      Str[1] = '0' + (OsVersion.getMajor() % 10);
+      Str[2] = '0' + (OsVersion.getMinor().getValueOr(0) / 10);
+      Str[3] = '0' + (OsVersion.getMinor().getValueOr(0) % 10);
+      Str[4] = '0' + (OsVersion.getSubminor().getValueOr(0) / 10);
+      Str[5] = '0' + (OsVersion.getSubminor().getValueOr(0) % 10);
       Str[6] = '\0';
     }
     Builder.defineMacro("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__", Str);
@@ -134,7 +134,7 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
   if (Triple.isOSDarwin())
     Builder.defineMacro("__MACH__");
 
-  PlatformMinVersion = VersionTuple(Maj, Min, Rev);
+  PlatformMinVersion = OsVersion;
 }
 
 static void addMinGWDefines(const llvm::Triple &Triple, const LangOptions &Opts,
diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index 7fbe2cbc5653..3c1830d5f8e8 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -148,9 +148,7 @@ public:
       return 64;
     }
 
-    unsigned Major, Minor, Micro;
-    T.getOSVersion(Major, Minor, Micro);
-    if (llvm::VersionTuple(Major, Minor, Micro) < MinVersion)
+    if (T.getOSVersion() < MinVersion)
       return 64;
     return OSTargetInfo<Target>::getExnObjectAlignment();
   }
@@ -294,7 +292,7 @@ protected:
     Builder.defineMacro("__HAIKU__");
     Builder.defineMacro("__ELF__");
     DefineStd(Builder, "unix", Opts);
-    if (this->HasFloat128) 
+    if (this->HasFloat128)
       Builder.defineMacro("__FLOAT128__");
   }
 
@@ -376,10 +374,9 @@ protected:
     Builder.defineMacro("__ELF__");
     if (Triple.isAndroid()) {
       Builder.defineMacro("__ANDROID__", "1");
-      unsigned Maj, Min, Rev;
-      Triple.getEnvironmentVersion(Maj, Min, Rev);
       this->PlatformName = "android";
-      this->PlatformMinVersion = VersionTuple(Maj, Min, Rev);
+      this->PlatformMinVersion = Triple.getEnvironmentVersion();
+      const unsigned Maj = this->PlatformMinVersion.getMajor();
       if (Maj) {
         Builder.defineMacro("__ANDROID_MIN_SDK_VERSION__", Twine(Maj));
         // This historical but ambiguous name for the minSdkVersion macro. Keep
@@ -693,23 +690,32 @@ protected:
     if (Opts.EnableAIXExtendedAltivecABI)
       Builder.defineMacro("__EXTABI__");
 
-    unsigned Major, Minor, Micro;
-    Triple.getOSVersion(Major, Minor, Micro);
+    VersionTuple OsVersion = Triple.getOSVersion();
 
     // Define AIX OS-Version Macros.
     // Includes logic for legacy versions of AIX; no specific intent to support.
-    std::pair<int, int> OsVersion = {Major, Minor};
-    if (OsVersion >= std::make_pair(3, 2)) Builder.defineMacro("_AIX32");
-    if (OsVersion >= std::make_pair(4, 1)) Builder.defineMacro("_AIX41");
-    if (OsVersion >= std::make_pair(4, 3)) Builder.defineMacro("_AIX43");
-    if (OsVersion >= std::make_pair(5, 0)) Builder.defineMacro("_AIX50");
-    if (OsVersion >= std::make_pair(5, 1)) Builder.defineMacro("_AIX51");
-    if (OsVersion >= std::make_pair(5, 2)) Builder.defineMacro("_AIX52");
-    if (OsVersion >= std::make_pair(5, 3)) Builder.defineMacro("_AIX53");
-    if (OsVersion >= std::make_pair(6, 1)) Builder.defineMacro("_AIX61");
-    if (OsVersion >= std::make_pair(7, 1)) Builder.defineMacro("_AIX71");
-    if (OsVersion >= std::make_pair(7, 2)) Builder.defineMacro("_AIX72");
-    if (OsVersion >= std::make_pair(7, 3)) Builder.defineMacro("_AIX73");
+    if (OsVersion >= VersionTuple(3, 2))
+      Builder.defineMacro("_AIX32");
+    if (OsVersion >= VersionTuple(4, 1))
+      Builder.defineMacro("_AIX41");
+    if (OsVersion >= VersionTuple(4, 3))
+      Builder.defineMacro("_AIX43");
+    if (OsVersion >= VersionTuple(5, 0))
+      Builder.defineMacro("_AIX50");
+    if (OsVersion >= VersionTuple(5, 1))
+      Builder.defineMacro("_AIX51");
+    if (OsVersion >= VersionTuple(5, 2))
+      Builder.defineMacro("_AIX52");
+    if (OsVersion >= VersionTuple(5, 3))
+      Builder.defineMacro("_AIX53");
+    if (OsVersion >= VersionTuple(6, 1))
+      Builder.defineMacro("_AIX61");
+    if (OsVersion >= VersionTuple(7, 1))
+      Builder.defineMacro("_AIX71");
+    if (OsVersion >= VersionTuple(7, 2))
+      Builder.defineMacro("_AIX72");
+    if (OsVersion >= VersionTuple(7, 3))
+      Builder.defineMacro("_AIX73");
 
     // FIXME: Do not define _LONG_LONG when -fno-long-long is specified.
     Builder.defineMacro("_LONG_LONG");
diff --git a/clang/lib/Basic/Targets/X86.h b/clang/lib/Basic/Targets/X86.h
index 0b420a7972bc..c952b8c9a336 100644
--- a/clang/lib/Basic/Targets/X86.h
+++ b/clang/lib/Basic/Targets/X86.h
@@ -472,10 +472,9 @@ public:
       : NetBSDTargetInfo<X86_32TargetInfo>(Triple, Opts) {}
 
   unsigned getFloatEvalMethod() const override {
-    unsigned Major, Minor, Micro;
-    getTriple().getOSVersion(Major, Minor, Micro);
+    VersionTuple OsVersion = getTriple().getOSVersion();
     // New NetBSD uses the default rounding mode.
-    if (Major >= 7 || (Major == 6 && Minor == 99 && Micro >= 26) || Major == 0)
+    if (OsVersion >= VersionTuple(6, 99, 26) || OsVersion.getMajor() == 0)
       return X86_32TargetInfo::getFloatEvalMethod();
     // NetBSD before 6.99.26 defaults to "double" rounding.
     return 1;
diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index 89d8fbe795e6..f7da3f187814 100644
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -1410,8 +1410,8 @@ static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
   llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
   if (!SystemTriple.isMacOSX())
     return std::string(MacOSSDKVersion);
-  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
-  VersionTuple SystemVersion(Major, Minor, Micro);
+  VersionTuple SystemVersion;
+  SystemTriple.getMacOSXVersion(SystemVersion);
   bool HadExtra;
   if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
                                  HadExtra))
@@ -1552,12 +1552,10 @@ struct DarwinPlatform {
                    const Optional<DarwinSDKInfo> &SDKInfo) {
     DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
                           A);
-    unsigned Major, Minor, Micro;
-    TT.getOSVersion(Major, Minor, Micro);
-    if (Major == 0)
+    VersionTuple OsVersion = TT.getOSVersion();
+    if (OsVersion.getMajor() == 0)
       Result.HasOSVersion = false;
-    Result.setEnvironment(TT.getEnvironment(),
-                          VersionTuple(Major, Minor, Micro), SDKInfo);
+    Result.setEnvironment(TT.getEnvironment(), OsVersion, SDKInfo);
     return Result;
   }
   static DarwinPlatform
@@ -1803,7 +1801,7 @@ inferDeploymentTargetFromSDK(DerivedArgList &Args,
 
 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
                          const Driver &TheDriver) {
-  unsigned Major, Minor, Micro;
+  VersionTuple OsVersion;
   llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
   switch (OS) {
   case llvm::Triple::Darwin:
@@ -1812,24 +1810,22 @@ std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
     // macos, use the host triple to infer OS version.
     if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
         !Triple.getOSMajorVersion())
-      SystemTriple.getMacOSXVersion(Major, Minor, Micro);
-    else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
+      SystemTriple.getMacOSXVersion(OsVersion);
+    else if (!Triple.getMacOSXVersion(OsVersion))
       TheDriver.Diag(diag::err_drv_invalid_darwin_version)
           << Triple.getOSName();
     break;
   case llvm::Triple::IOS:
     if (Triple.isMacCatalystEnvironment() && !Triple.getOSMajorVersion()) {
-      Major = 13;
-      Minor = 1;
-      Micro = 0;
+      OsVersion = VersionTuple(13, 1);
     } else
-      Triple.getiOSVersion(Major, Minor, Micro);
+      OsVersion = Triple.getiOSVersion();
     break;
   case llvm::Triple::TvOS:
-    Triple.getOSVersion(Major, Minor, Micro);
+    OsVersion = Triple.getOSVersion();
     break;
   case llvm::Triple::WatchOS:
-    Triple.getWatchOSVersion(Major, Minor, Micro);
+    OsVersion = Triple.getWatchOSVersion();
     break;
   default:
     llvm_unreachable("Unexpected OS type");
@@ -1837,7 +1833,9 @@ std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
   }
 
   std::string OSVersion;
-  llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
+  llvm::raw_string_ostream(OSVersion)
+      << OsVersion.getMajor() << '.' << OsVersion.getMinor().getValueOr(0)
+      << '.' << OsVersion.getSubminor().getValueOr(0);
   return OSVersion;
 }
 
@@ -1907,15 +1905,13 @@ getDeploymentTargetFromMTargetOSArg(DerivedArgList &Args,
     return None;
   }
 
-  unsigned Major, Minor, Micro;
-  TT.getOSVersion(Major, Minor, Micro);
-  if (!Major) {
+  VersionTuple Version = TT.getOSVersion();
+  if (!Version.getMajor()) {
     TheDriver.Diag(diag::err_drv_invalid_version_number)
         << A->getAsString(Args);
     return None;
   }
-  return DarwinPlatform::createFromMTargetOS(TT.getOS(),
-                                             VersionTuple(Major, Minor, Micro),
+  return DarwinPlatform::createFromMTargetOS(TT.getOS(), Version,
                                              TT.getEnvironment(), A, SDKInfo);
 }
 
diff --git a/clang/lib/Driver/ToolChains/Linux.cpp b/clang/lib/Driver/ToolChains/Linux.cpp
index 198774506e5e..7494c2129211 100644
--- a/clang/lib/Driver/ToolChains/Linux.cpp
+++ b/clang/lib/Driver/ToolChains/Linux.cpp
@@ -277,14 +277,11 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
     // Android sysroots contain a library directory for each supported OS
     // version as well as some unversioned libraries in the usual multiarch
     // directory.
-    unsigned Major;
-    unsigned Minor;
-    unsigned Micro;
-    Triple.getEnvironmentVersion(Major, Minor, Micro);
-    addPathIfExists(D,
-                    SysRoot + "/usr/lib/" + MultiarchTriple + "/" +
-                        llvm::to_string(Major),
-                    Paths);
+    addPathIfExists(
+        D,
+        SysRoot + "/usr/lib/" + MultiarchTriple + "/" +
+            llvm::to_string(Triple.getEnvironmentVersion().getMajor()),
+        Paths);
   }
 
   addPathIfExists(D, SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
diff --git a/clang/lib/Driver/ToolChains/MSVC.cpp b/clang/lib/Driver/ToolChains/MSVC.cpp
index 792b0a51fea0..66e9d8ab525a 100644
--- a/clang/lib/Driver/ToolChains/MSVC.cpp
+++ b/clang/lib/Driver/ToolChains/MSVC.cpp
@@ -1194,14 +1194,6 @@ bool MSVCToolChain::getUniversalCRTLibraryPath(const ArgList &Args,
   return true;
 }
 
-static VersionTuple getMSVCVersionFromTriple(const llvm::Triple &Triple) {
-  unsigned Major, Minor, Micro;
-  Triple.getEnvironmentVersion(Major, Minor, Micro);
-  if (Major || Minor || Micro)
-    return VersionTuple(Major, Minor, Micro);
-  return VersionTuple();
-}
-
 static VersionTuple getMSVCVersionFromExe(const std::string &BinDir) {
   VersionTuple Version;
 #ifdef _WIN32
@@ -1374,7 +1366,7 @@ VersionTuple MSVCToolChain::computeMSVCVersion(const Driver *D,
   bool IsWindowsMSVC = getTriple().isWindowsMSVCEnvironment();
   VersionTuple MSVT = ToolChain::computeMSVCVersion(D, Args);
   if (MSVT.empty())
-    MSVT = getMSVCVersionFromTriple(getTriple());
+    MSVT = getTriple().getEnvironmentVersion();
   if (MSVT.empty() && IsWindowsMSVC)
     MSVT = getMSVCVersionFromExe(getSubDirectoryPath(SubDirectoryType::Bin));
   if (MSVT.empty() &&
diff --git a/clang/lib/Driver/ToolChains/NetBSD.cpp b/clang/lib/Driver/ToolChains/NetBSD.cpp
index 7571398b7cc6..37b1fc5215ff 100644
--- a/clang/lib/Driver/ToolChains/NetBSD.cpp
+++ b/clang/lib/Driver/ToolChains/NetBSD.cpp
@@ -270,10 +270,9 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back(Args.MakeArgString(ToolChain.getCompilerRTPath()));
   }
 
-  unsigned Major, Minor, Micro;
-  Triple.getOSVersion(Major, Minor, Micro);
+  VersionTuple OsVersion = Triple.getOSVersion();
   bool useLibgcc = true;
-  if (Major >= 7 || Major == 0) {
+  if (OsVersion >= VersionTuple(7) || OsVersion.getMajor() == 0) {
     switch (ToolChain.getArch()) {
     case llvm::Triple::aarch64:
     case llvm::Triple::aarch64_be:
@@ -409,9 +408,8 @@ Tool *NetBSD::buildAssembler() const {
 Tool *NetBSD::buildLinker() const { return new tools::netbsd::Linker(*this); }
 
 ToolChain::CXXStdlibType NetBSD::GetDefaultCXXStdlibType() const {
-  unsigned Major, Minor, Micro;
-  getTriple().getOSVersion(Major, Minor, Micro);
-  if (Major >= 7 || Major == 0) {
+  VersionTuple OsVersion = getTriple().getOSVersion();
+  if (OsVersion >= VersionTuple(7) || OsVersion.getMajor() == 0) {
     switch (getArch()) {
     case llvm::Triple::aarch64:
     case llvm::Triple::aarch64_be:
@@ -505,14 +503,13 @@ void NetBSD::addClangTargetOptions(const ArgList &DriverArgs,
   if (SanArgs.hasAnySanitizer())
     CC1Args.push_back("-D_REENTRANT");
 
-  unsigned Major, Minor, Micro;
-  getTriple().getOSVersion(Major, Minor, Micro);
+  VersionTuple OsVersion = getTriple().getOSVersion();
   bool UseInitArrayDefault =
-    Major >= 9 || Major == 0 ||
-    getTriple().getArch() == llvm::Triple::aarch64 ||
-    getTriple().getArch() == llvm::Triple::aarch64_be ||
-    getTriple().getArch() == llvm::Triple::arm ||
-    getTriple().getArch() == llvm::Triple::armeb;
+      OsVersion >= VersionTuple(9) || OsVersion.getMajor() == 0 ||
+      getTriple().getArch() == llvm::Triple::aarch64 ||
+      getTriple().getArch() == llvm::Triple::aarch64_be ||
+      getTriple().getArch() == llvm::Triple::arm ||
+      getTriple().getArch() == llvm::Triple::armeb;
 
   if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
                           options::OPT_fno_use_init_array, UseInitArrayDefault))
diff --git a/clang/test/Sema/attr-availability-android.c b/clang/test/Sema/attr-availability-android.c
index f38f71fbc783..39638bc38c4a 100644
--- a/clang/test/Sema/attr-availability-android.c
+++ b/clang/test/Sema/attr-availability-android.c
@@ -5,7 +5,7 @@ void f0(int) __attribute__((availability(android,introduced=14,deprecated=19)));
 void f1(int) __attribute__((availability(android,introduced=16)));
 void f2(int) __attribute__((availability(android,introduced=14,deprecated=16))); // expected-note {{'f2' has been explicitly marked deprecated here}}
 #ifdef WARN_PARTIAL
-// expected-note-re@+2 {{'f3' has been marked as being introduced in Android 19 here, but the deployment target is Android 16.0.0{{$}}}}
+// expected-note-re@+2 {{'f3' has been marked as being introduced in Android 19 here, but the deployment target is Android 16{{$}}}}
 #endif
 void f3(int) __attribute__((availability(android,introduced=19)));
 void f4(int) __attribute__((availability(android,introduced=9,deprecated=11,obsoleted=16), availability(ios,introduced=2.0,deprecated=3.0))); // expected-note{{explicitly marked unavailable}}
diff --git a/clang/test/Sema/attr-availability.c b/clang/test/Sema/attr-availability.c
index dbdf6593c3f7..b34d3d6b531b 100644
--- a/clang/test/Sema/attr-availability.c
+++ b/clang/test/Sema/attr-availability.c
@@ -1,6 +1,6 @@
 // RUN: %clang_cc1 -triple x86_64-apple-darwin9 -fsyntax-only -fblocks -verify %s
 // RUN: %clang_cc1 -D WARN_PARTIAL -Wpartial-availability -triple x86_64-apple-darwin9 -fsyntax-only -fblocks -verify %s
-// 
+//
 
 void f0() __attribute__((availability(macosx,introduced=10.4,deprecated=10.2))); // expected-warning{{feature cannot be deprecated in macOS version 10.2 before it was introduced in version 10.4; attribute ignored}}
 void f1() __attribute__((availability(ios,obsoleted=2.1,deprecated=3.0)));  // expected-warning{{feature cannot be obsoleted in iOS version 2.1 before it was deprecated in version 3.0; attribute ignored}}
@@ -9,20 +9,20 @@ void f2() __attribute__((availability(ios,introduced=2.1,deprecated=2.1)));
 void f3() __attribute__((availability(otheros,introduced=2.2))); // expected-warning{{unknown platform 'otheros' in availability macro}}
 
 // rdar://10095131
-extern void 
+extern void
 ATSFontGetName(const char *oName) __attribute__((availability(macosx,introduced=8.0,deprecated=9.0, message="use CTFontCopyFullName"))); // expected-note {{'ATSFontGetName' has been explicitly marked deprecated here}}
 
 extern void
 ATSFontGetPostScriptName(int flags) __attribute__((availability(macosx,introduced=8.0,obsoleted=9.0, message="use ATSFontGetFullPostScriptName"))); // expected-note {{'ATSFontGetPostScriptName' has been explicitly marked unavailable here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+3 {{'PartiallyAvailable' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+3 {{'PartiallyAvailable' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 extern void
 PartiallyAvailable() __attribute__((availability(macosx,introduced=10.8)));
 
 #ifdef WARN_PARTIAL
-// expected-note@+2 2 {{'PartialEnum' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 2 {{'PartialEnum' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 enum __attribute__((availability(macosx,introduced=10.8))) PartialEnum {
   kPartialEnumConstant,
@@ -41,7 +41,7 @@ void test_10095131() {
 #ifdef WARN_PARTIAL
 // FIXME: This note should point to the declaration with the availability
 // attribute.
-// expected-note@+2 {{'PartiallyAvailable' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 {{'PartiallyAvailable' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 extern void PartiallyAvailable() ;
 void with_redeclaration() {
diff --git a/clang/test/Sema/availability-guard-format.mm b/clang/test/Sema/availability-guard-format.mm
index 0e158c4173c2..e5967d1082b9 100644
--- a/clang/test/Sema/availability-guard-format.mm
+++ b/clang/test/Sema/availability-guard-format.mm
@@ -3,7 +3,7 @@
 // Testing that even for source code using '_' as a delimiter in availability version tuple '.' is actually used in diagnostic output as a delimiter.
 
 @interface foo
-- (void) method_bar __attribute__((availability(macosx, introduced = 10_12))); // expected-note {{'method_bar' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.11.0}}
+- (void) method_bar __attribute__((availability(macosx, introduced = 10_12))); // expected-note {{'method_bar' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.11}}
 @end
 
 int main() {
diff --git a/clang/test/SemaObjC/attr-availability.m b/clang/test/SemaObjC/attr-availability.m
index cb896150574e..e3f7a38f5889 100644
--- a/clang/test/SemaObjC/attr-availability.m
+++ b/clang/test/SemaObjC/attr-availability.m
@@ -5,7 +5,7 @@
 - (void)proto_method __attribute__((availability(macosx,introduced=10.1,deprecated=10.2))); // expected-note 2 {{'proto_method' has been explicitly marked deprecated here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 2 {{'partial_proto_method' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 2 {{'partial_proto_method' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 - (void)partial_proto_method __attribute__((availability(macosx,introduced=10.8)));
 @end
@@ -13,7 +13,7 @@
 @interface A <P>
 - (void)method __attribute__((availability(macosx,introduced=10.1,deprecated=10.2))); // expected-note {{'method' has been explicitly marked deprecated here}}
 #if defined(WARN_PARTIAL)
-// expected-note@+2 2 {{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 2 {{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 - (void)partialMethod __attribute__((availability(macosx,introduced=10.8)));
 
@@ -137,8 +137,8 @@ id NSNibOwner, topNibObjects;
 
 @interface PartialI <PartialProt>
 #ifdef WARN_PARTIAL
-// expected-note@+3{{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
-// expected-note@+3{{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+3{{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
+// expected-note@+3{{'partialMethod' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 - (void)partialMethod __attribute__((availability(macosx,introduced=10.8)));
 + (void)partialMethod __attribute__((availability(macosx,introduced=10.8)));
@@ -147,12 +147,12 @@ id NSNibOwner, topNibObjects;
 @interface PartialI ()
 - (void)ipartialMethod1 __attribute__((availability(macosx,introduced=10.8)));
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'ipartialMethod2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 {{'ipartialMethod2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 - (void)ipartialMethod2 __attribute__((availability(macosx,introduced=10.8)));
 + (void)ipartialMethod1 __attribute__((availability(macosx,introduced=10.8)));
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'ipartialMethod2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 {{'ipartialMethod2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 + (void)ipartialMethod2 __attribute__((availability(macosx,introduced=10.8)));
 @end
@@ -190,7 +190,7 @@ void partialfun(PartialI* a) {
 }
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 2 {{'PartialI2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+// expected-note@+2 2 {{'PartialI2' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
 #endif
 __attribute__((availability(macosx, introduced = 10.8))) @interface PartialI2
 @end
@@ -222,7 +222,7 @@ enum MyEnum : int { // expected-note {{'MyEnum' has been explicitly marked unava
 void use_myEnum() {
   // expected-error@+2 {{'MyEnum' is unavailable: not available}}
   // expected-error@+1 {{MyEnum_Blah' is unavailable: not available}}
-  MyEnum e = MyEnum_Blah; 
+  MyEnum e = MyEnum_Blah;
 }
 
 // Test that the availability of (optional) protocol methods is not
@@ -313,8 +313,8 @@ __attribute__((objc_root_class))
 #if defined(WARN_PARTIAL)
 
 int fn_10_5() __attribute__((availability(macosx, introduced=10.5)));
-int fn_10_7() __attribute__((availability(macosx, introduced=10.7))); // expected-note{{'fn_10_7' has been marked as being introduced in macOS 10.7 here, but the deployment target is macOS 10.5.0}}
-int fn_10_8() __attribute__((availability(macosx, introduced=10.8))) { // expected-note{{'fn_10_8' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5.0}}
+int fn_10_7() __attribute__((availability(macosx, introduced=10.7))); // expected-note{{'fn_10_7' has been marked as being introduced in macOS 10.7 here, but the deployment target is macOS 10.5}}
+int fn_10_8() __attribute__((availability(macosx, introduced=10.8))) { // expected-note{{'fn_10_8' has been marked as being introduced in macOS 10.8 here, but the deployment target is macOS 10.5}}
   return fn_10_7();
 }
 
diff --git a/clang/test/SemaObjC/property-deprecated-warning.m b/clang/test/SemaObjC/property-deprecated-warning.m
index a1e971118b2c..45e098baa891 100644
--- a/clang/test/SemaObjC/property-deprecated-warning.m
+++ b/clang/test/SemaObjC/property-deprecated-warning.m
@@ -9,7 +9,7 @@ typedef signed char BOOL;
 @property(nonatomic,assign) id ptarget __attribute__((availability(ios,introduced=2.0,deprecated=3.0))); // expected-note {{property 'ptarget' is declared deprecated here}} expected-note {{'ptarget' has been explicitly marked deprecated here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'partialPtarget' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
+// expected-note@+2 {{'partialPtarget' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
 #endif
 @property(nonatomic,assign) id partialPtarget __attribute__((availability(ios,introduced=5.0)));
 @end
@@ -24,7 +24,7 @@ typedef signed char BOOL;
 @property(nonatomic,assign) id target __attribute__((availability(ios,introduced=2.0,deprecated=3.0))); // expected-note {{property 'target' is declared deprecated here}} expected-note {{'setTarget:' has been explicitly marked deprecated here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'setPartialTarget:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
+// expected-note@+2 {{'setPartialTarget:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
 #endif
 @property(nonatomic,assign) id partialTarget __attribute__((availability(ios,introduced=5.0)));
 @end
@@ -40,8 +40,8 @@ typedef signed char BOOL;
                                                                                     // expected-note 2 {{'setDep_target:' has been explicitly marked deprecated here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+3 2 {{'partial_dep_target' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
-// expected-note@+2 2 {{'setPartial_dep_target:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
+// expected-note@+3 2 {{'partial_dep_target' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
+// expected-note@+2 2 {{'setPartial_dep_target:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
 #endif
 @property(nonatomic,assign) id partial_dep_target  __attribute__((availability(ios,introduced=5.0)));
 @end
@@ -54,7 +54,7 @@ typedef signed char BOOL;
   [self setTarget: (id)0]; // no-warning
   [self setDep_target: [self dep_target]]; // expected-warning {{'dep_target' is deprecated: first deprecated in iOS 3.0}} \
                                            // expected-warning {{'setDep_target:' is deprecated: first deprecated in iOS 3.0}}
-					   
+
   [self setPtarget: (id)0]; // no-warning
   [self setPartialTarget: (id)0]; // no-warning
 #if defined(WARN_PARTIAL)
@@ -101,12 +101,12 @@ typedef signed char BOOL;
 @property(setter=setNewDelegate:,assign) id delegate __attribute__((availability(ios,introduced=2.0,deprecated=3.0))); // expected-note {{'setNewDelegate:' has been explicitly marked deprecated here}} expected-note {{property 'delegate' is declared deprecated here}}
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'partialIsEnabled' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
+// expected-note@+2 {{'partialIsEnabled' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
 #endif
 @property(getter=partialIsEnabled,assign) BOOL partialEnabled __attribute__((availability(ios,introduced=5.0)));
 
 #if defined(WARN_PARTIAL)
-// expected-note@+2 {{'partialSetNewDelegate:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0.0}}
+// expected-note@+2 {{'partialSetNewDelegate:' has been marked as being introduced in iOS 5.0 here, but the deployment target is iOS 3.0}}
 #endif
 @property(setter=partialSetNewDelegate:,assign) id partialDelegate __attribute__((availability(ios,introduced=5.0)));
 @end
diff --git a/clang/test/SemaObjC/unguarded-availability-maccatalyst.m b/clang/test/SemaObjC/unguarded-availability-maccatalyst.m
index 590304dda505..9d05a2ba99e5 100644
--- a/clang/test/SemaObjC/unguarded-availability-maccatalyst.m
+++ b/clang/test/SemaObjC/unguarded-availability-maccatalyst.m
@@ -15,7 +15,7 @@ void previouslyAvailable() AVAILABLE_PREV;
 void currentlyAvailable() AVAILABLE_CURRENT;
 void willBeAvailabile() AVAILABLE_NEXT;
 #ifndef NO_WARNING
-// expected-note@-2 {{'willBeAvailabile' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14.0.0}}
+// expected-note@-2 {{'willBeAvailabile' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14}}
 #endif
 
 
@@ -23,7 +23,7 @@ typedef struct {
 
 } Record AVAILABLE_NEXT;
 #ifndef NO_WARNING
-// expected-note@-2 {{'Record' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14.0.0}}
+// expected-note@-2 {{'Record' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14}}
 #endif
 
 AVAILABLE_PREV
@@ -56,7 +56,7 @@ void previouslyAvailableIOS() __attribute__((availability(ios, introduced = 10))
 void currentlyAvailableIOS() __attribute__((availability(ios, introduced = 14)));
 void willBeAvailabileIOS() __attribute__((availability(ios, introduced = 14.1)));
 #ifndef NO_WARNING
-// expected-note@-2 {{'willBeAvailabileIOS' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14.0.0}}
+// expected-note@-2 {{'willBeAvailabileIOS' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14}}
 #endif
 
 void testIOSAvailabilityAlsoWorks() {
@@ -77,7 +77,7 @@ typedef struct {
 
 } Record2 __attribute__((availability(ios, introduced = 14.1)));
 #ifndef NO_WARNING
-// expected-note@-2 {{'Record2' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14.0.0}}
+// expected-note@-2 {{'Record2' has been marked as being introduced in macCatalyst 14.1 here, but the deployment target is macCatalyst 14}}
 #endif
 
 __attribute__((availability(ios, introduced = 10)))
diff --git a/clang/test/SemaObjC/unguarded-availability.m b/clang/test/SemaObjC/unguarded-availability.m
index 0ee57301c3f5..dffad1dbe0f0 100644
--- a/clang/test/SemaObjC/unguarded-availability.m
+++ b/clang/test/SemaObjC/unguarded-availability.m
@@ -5,14 +5,14 @@
 #define AVAILABLE_10_11 __attribute__((availability(macos, introduced = 10.11)))
 #define AVAILABLE_10_12 __attribute__((availability(macos, introduced = 10.12)))
 
-typedef int AVAILABLE_10_12 new_int; // expected-note + {{'new_int' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+typedef int AVAILABLE_10_12 new_int; // expected-note + {{'new_int' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 
-int func_10_11() AVAILABLE_10_11; // expected-note 8 {{'func_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9.0}}
+int func_10_11() AVAILABLE_10_11; // expected-note 8 {{'func_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}
 
 #ifdef OBJCPP
-// expected-note@+2 6 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+// expected-note@+2 6 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 #endif
-int func_10_12() AVAILABLE_10_12; // expected-note 7 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+int func_10_12() AVAILABLE_10_12; // expected-note 7 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 
 int func_10_0() AVAILABLE_10_0;
 
@@ -61,11 +61,11 @@ void star_case() {
   }
 }
 
-typedef int int_10_11 AVAILABLE_10_11; // expected-note {{'int_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9.0}}
+typedef int int_10_11 AVAILABLE_10_11; // expected-note {{'int_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}
 #ifdef OBJCPP
-// expected-note@+2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+// expected-note@+2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 #endif
-typedef int int_10_12 AVAILABLE_10_12; // expected-note 2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+typedef int int_10_12 AVAILABLE_10_12; // expected-note 2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 
 void use_typedef() {
   int_10_11 x; // expected-warning{{'int_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'int_10_11' in an @available check to silence this warning}}
@@ -106,10 +106,10 @@ int protected_scope() {
 
 struct S {
   int m1;
-  int m2 __attribute__((availability(macos, introduced = 10.12))); // expected-note{{has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+  int m2 __attribute__((availability(macos, introduced = 10.12))); // expected-note{{has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 
   struct Nested {
-    int nested_member __attribute__((availability(macos, introduced = 10.12))); // expected-note{{'nested_member' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+    int nested_member __attribute__((availability(macos, introduced = 10.12))); // expected-note{{'nested_member' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
   } n;
 };
 
@@ -147,9 +147,9 @@ void (^topLevelBlockDecl)() = ^ {
 
 AVAILABLE_10_12
 __attribute__((objc_root_class))
-@interface InterWithProp // expected-note 2 {{'InterWithProp' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+@interface InterWithProp // expected-note 2 {{'InterWithProp' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 @property(class) int x;
-+ (void) setX: (int)newX AVAILABLE_10_12; // expected-note{{'setX:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
++ (void) setX: (int)newX AVAILABLE_10_12; // expected-note{{'setX:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 @end
 void test_property(void) {
   int y = InterWithProp.x; // expected-warning{{'InterWithProp' is only available on macOS 10.12 or newer}} expected-note{{@available}}
@@ -158,7 +158,7 @@ void test_property(void) {
 
 __attribute__((objc_root_class))
 @interface Subscriptable
-- (id)objectAtIndexedSubscript:(int)sub AVAILABLE_10_12; // expected-note{{'objectAtIndexedSubscript:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+- (id)objectAtIndexedSubscript:(int)sub AVAILABLE_10_12; // expected-note{{'objectAtIndexedSubscript:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 @end
 
 void test_at(Subscriptable *x) {
@@ -204,7 +204,7 @@ int instantiate_template() {
 }
 
 template <class>
-int with_availability_attr() AVAILABLE_10_11 { // expected-note 2 {{'with_availability_attr<int>' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9.0}}
+int with_availability_attr() AVAILABLE_10_11 { // expected-note 2 {{'with_availability_attr<int>' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}
   return 0;
 }
 
@@ -282,9 +282,9 @@ struct InStruct { // expected-note{{annotate 'InStruct' with an availability att
 };
 
 #ifdef OBJCPP
-static constexpr int AVAILABLE_10_12 SomeConstexprValue = 2; // expected-note{{'SomeConstexprValue' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+static constexpr int AVAILABLE_10_12 SomeConstexprValue = 2; // expected-note{{'SomeConstexprValue' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 typedef enum { // expected-note{{annotate anonymous enum with an availability attribute}}
-  SomeValue = SomeConstexprValue // expected-warning{{'SomeConstexprValue' is only available on macOS 10.12 or newer}} 
+  SomeValue = SomeConstexprValue // expected-warning{{'SomeConstexprValue' is only available on macOS 10.12 or newer}}
 } SomeEnum;
 #endif
 
@@ -297,7 +297,7 @@ typedef enum { // expected-note{{annotate anonymous enum with an availability at
 @end
 
 void with_local_struct() {
-  struct local { 
+  struct local {
     new_int x; // expected-warning{{'new_int' is only available}} expected-note{{enclose 'new_int' in an @available check}}
   };
   if (@available(macos 10.12, *)) {
@@ -311,7 +311,7 @@ void with_local_struct() {
 // Avoid the warning on protocol requirements.
 
 AVAILABLE_10_12
-@protocol NewProtocol // expected-note {{'NewProtocol' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+@protocol NewProtocol // expected-note {{'NewProtocol' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 @end
 
 @protocol ProtocolWithNewProtocolRequirement <NewProtocol> // expected-note {{annotate 'ProtocolWithNewProtocolRequirement' with an availability attribute to silence}}
@@ -334,7 +334,7 @@ AVAILABLE_10_12
 typedef enum {
   AK_Dodo __attribute__((availability(macos, deprecated=10.3))), // expected-note 3 {{marked deprecated here}}
   AK_Cat __attribute__((availability(macos, introduced=10.4))),
-  AK_CyborgCat __attribute__((availability(macos, introduced=10.12))), // expected-note {{'AK_CyborgCat' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9.0}}
+  AK_CyborgCat __attribute__((availability(macos, introduced=10.12))), // expected-note {{'AK_CyborgCat' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
 } Animals;
 
 void switchAnimals(Animals a) {
diff --git a/llvm/include/llvm/ADT/Triple.h b/llvm/include/llvm/ADT/Triple.h
index 2fd3047acbfd..5dbd4f16bfd5 100644
--- a/llvm/include/llvm/ADT/Triple.h
+++ b/llvm/include/llvm/ADT/Triple.h
@@ -10,6 +10,7 @@
 #define LLVM_ADT_TRIPLE_H
 
 #include "llvm/ADT/Twine.h"
+#include "llvm/Support/VersionTuple.h"
 
 // Some system headers or GCC predefined macros conflict with identifiers in
 // this file.  Undefine them here.
@@ -19,8 +20,6 @@
 
 namespace llvm {
 
-class VersionTuple;
-
 /// Triple - Helper class for working with autoconf configuration names. For
 /// historical reasons, we also call these 'triples' (they used to contain
 /// exactly three fields).
@@ -332,10 +331,7 @@ public:
   /// triple, if present.
   ///
   /// For example, "fooos1.2.3" would return (1, 2, 3).
-  ///
-  /// If an entry is not defined, it will be returned as 0.
-  void getEnvironmentVersion(unsigned &Major, unsigned &Minor,
-                             unsigned &Micro) const;
+  VersionTuple getEnvironmentVersion() const;
 
   /// Get the object format for this triple.
   ObjectFormatType getObjectFormat() const { return ObjectFormat; }
@@ -344,34 +340,25 @@ public:
   /// present.
   ///
   /// For example, "fooos1.2.3" would return (1, 2, 3).
-  ///
-  /// If an entry is not defined, it will be returned as 0.
-  void getOSVersion(unsigned &Major, unsigned &Minor, unsigned &Micro) const;
+  VersionTuple getOSVersion() const;
 
   /// Return just the major version number, this is specialized because it is a
   /// common query.
-  unsigned getOSMajorVersion() const {
-    unsigned Maj, Min, Micro;
-    getOSVersion(Maj, Min, Micro);
-    return Maj;
-  }
+  unsigned getOSMajorVersion() const { return getOSVersion().getMajor(); }
 
   /// Parse the version number as with getOSVersion and then translate generic
   /// "darwin" versions to the corresponding OS X versions.  This may also be
   /// called with IOS triples but the OS X version number is just set to a
   /// constant 10.4.0 in that case.  Returns true if successful.
-  bool getMacOSXVersion(unsigned &Major, unsigned &Minor,
-                        unsigned &Micro) const;
+  bool getMacOSXVersion(VersionTuple &Version) const;
 
   /// Parse the version number as with getOSVersion.  This should only be called
   /// with IOS or generic triples.
-  void getiOSVersion(unsigned &Major, unsigned &Minor,
-                     unsigned &Micro) const;
+  VersionTuple getiOSVersion() const;
 
   /// Parse the version number as with getOSVersion.  This should only be called
   /// with WatchOS or generic triples.
-  void getWatchOSVersion(unsigned &Major, unsigned &Minor,
-                         unsigned &Micro) const;
+  VersionTuple getWatchOSVersion() const;
 
   /// @}
   /// @name Direct Component Access
@@ -428,23 +415,17 @@ public:
   /// the target triple.
   bool isOSVersionLT(unsigned Major, unsigned Minor = 0,
                      unsigned Micro = 0) const {
-    unsigned LHS[3];
-    getOSVersion(LHS[0], LHS[1], LHS[2]);
-
-    if (LHS[0] != Major)
-      return LHS[0] < Major;
-    if (LHS[1] != Minor)
-      return LHS[1] < Minor;
-    if (LHS[2] != Micro)
-      return LHS[2] < Micro;
-
-    return false;
+    if (Minor == 0) {
+      return getOSVersion() < VersionTuple(Major);
+    }
+    if (Micro == 0) {
+      return getOSVersion() < VersionTuple(Major, Minor);
+    }
+    return getOSVersion() < VersionTuple(Major, Minor, Micro);
   }
 
   bool isOSVersionLT(const Triple &Other) const {
-    unsigned RHS[3];
-    Other.getOSVersion(RHS[0], RHS[1], RHS[2]);
-    return isOSVersionLT(RHS[0], RHS[1], RHS[2]);
+    return getOSVersion() < Other.getOSVersion();
   }
 
   /// Comparison function for checking OS X version compatibility, which handles
@@ -678,14 +659,13 @@ public:
   bool isAndroidVersionLT(unsigned Major) const {
     assert(isAndroid() && "Not an Android triple!");
 
-    unsigned Env[3];
-    getEnvironmentVersion(Env[0], Env[1], Env[2]);
+    VersionTuple Version = getEnvironmentVersion();
 
     // 64-bit targets did not exist before API level 21 (Lollipop).
-    if (isArch64Bit() && Env[0] < 21)
-      Env[0] = 21;
+    if (isArch64Bit() && Version.getMajor() < 21)
+      return VersionTuple(21) < VersionTuple(Major);
 
-    return Env[0] < Major;
+    return Version < VersionTuple(Major);
   }
 
   /// Tests whether the environment is musl-libc
diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index 72fbd5ad3f68..02923c2c7eb1 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -238,9 +238,8 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     // e.g., x86_64-pc-windows-msvc18.
     bool hasPartialC99 = true;
     if (T.isKnownWindowsMSVCEnvironment()) {
-      unsigned Major, Minor, Micro;
-      T.getEnvironmentVersion(Major, Minor, Micro);
-      hasPartialC99 = (Major == 0 || Major >= 19);
+      VersionTuple Version = T.getEnvironmentVersion();
+      hasPartialC99 = (Version.getMajor() == 0 || Version.getMajor() >= 19);
     }
 
     // Latest targets support C89 math functions, in part.
diff --git a/llvm/lib/MC/MCStreamer.cpp b/llvm/lib/MC/MCStreamer.cpp
index f4e64b42c817..b0da490327d4 100644
--- a/llvm/lib/MC/MCStreamer.cpp
+++ b/llvm/lib/MC/MCStreamer.cpp
@@ -1316,37 +1316,36 @@ void MCStreamer::emitVersionForTarget(const Triple &Target,
   if (Target.getOSMajorVersion() == 0)
     return;
 
-  unsigned Major = 0;
-  unsigned Minor = 0;
-  unsigned Update = 0;
+  VersionTuple Version;
   switch (Target.getOS()) {
   case Triple::MacOSX:
   case Triple::Darwin:
-    Target.getMacOSXVersion(Major, Minor, Update);
+    Target.getMacOSXVersion(Version);
     break;
   case Triple::IOS:
   case Triple::TvOS:
-    Target.getiOSVersion(Major, Minor, Update);
+    Version = Target.getiOSVersion();
     break;
   case Triple::WatchOS:
-    Target.getWatchOSVersion(Major, Minor, Update);
+    Version = Target.getWatchOSVersion();
     break;
   default:
     llvm_unreachable("unexpected OS type");
   }
-  assert(Major != 0 && "A non-zero major version is expected");
-  auto LinkedTargetVersion = targetVersionOrMinimumSupportedOSVersion(
-      Target, VersionTuple(Major, Minor, Update));
+  assert(Version.getMajor() != 0 && "A non-zero major version is expected");
+  auto LinkedTargetVersion =
+      targetVersionOrMinimumSupportedOSVersion(Target, Version);
   auto BuildVersionOSVersion = getMachoBuildVersionSupportedOS(Target);
   if (BuildVersionOSVersion.empty() ||
       LinkedTargetVersion >= BuildVersionOSVersion)
     return emitBuildVersion(getMachoBuildVersionPlatformType(Target),
                             LinkedTargetVersion.getMajor(),
-                            *LinkedTargetVersion.getMinor(),
-                            *LinkedTargetVersion.getSubminor(), SDKVersion);
+                            LinkedTargetVersion.getMinor().getValueOr(0),
+                            LinkedTargetVersion.getSubminor().getValueOr(0),
+                            SDKVersion);
 
   emitVersionMin(getMachoVersionMinLoadCommandType(Target),
                  LinkedTargetVersion.getMajor(),
-                 *LinkedTargetVersion.getMinor(),
-                 *LinkedTargetVersion.getSubminor(), SDKVersion);
+                 LinkedTargetVersion.getMinor().getValueOr(0),
+                 LinkedTargetVersion.getSubminor().getValueOr(0), SDKVersion);
 }
diff --git a/llvm/lib/Support/Triple.cpp b/llvm/lib/Support/Triple.cpp
index b9a92e280576..1b063f6c4214 100644
--- a/llvm/lib/Support/Triple.cpp
+++ b/llvm/lib/Support/Triple.cpp
@@ -1091,53 +1091,22 @@ StringRef Triple::getOSAndEnvironmentName() const {
   return Tmp.split('-').second;                      // Strip second component
 }
 
-static unsigned EatNumber(StringRef &Str) {
-  assert(!Str.empty() && isDigit(Str[0]) && "Not a number");
-  unsigned Result = 0;
-
-  do {
-    // Consume the leading digit.
-    Result = Result*10 + (Str[0] - '0');
-
-    // Eat the digit.
-    Str = Str.substr(1);
-  } while (!Str.empty() && isDigit(Str[0]));
-
-  return Result;
+static VersionTuple parseVersionFromName(StringRef Name) {
+  VersionTuple Version;
+  Version.tryParse(Name);
+  return Version.withoutBuild();
 }
 
-static void parseVersionFromName(StringRef Name, unsigned &Major,
-                                 unsigned &Minor, unsigned &Micro) {
-  // Any unset version defaults to 0.
-  Major = Minor = Micro = 0;
-
-  // Parse up to three components.
-  unsigned *Components[3] = {&Major, &Minor, &Micro};
-  for (unsigned i = 0; i != 3; ++i) {
-    if (Name.empty() || Name[0] < '0' || Name[0] > '9')
-      break;
-
-    // Consume the leading number.
-    *Components[i] = EatNumber(Name);
-
-    // Consume the separator, if present.
-    if (Name.startswith("."))
-      Name = Name.substr(1);
-  }
-}
-
-void Triple::getEnvironmentVersion(unsigned &Major, unsigned &Minor,
-                                   unsigned &Micro) const {
+VersionTuple Triple::getEnvironmentVersion() const {
   StringRef EnvironmentName = getEnvironmentName();
   StringRef EnvironmentTypeName = getEnvironmentTypeName(getEnvironment());
   if (EnvironmentName.startswith(EnvironmentTypeName))
     EnvironmentName = EnvironmentName.substr(EnvironmentTypeName.size());
 
-  parseVersionFromName(EnvironmentName, Major, Minor, Micro);
+  return parseVersionFromName(EnvironmentName);
 }
 
-void Triple::getOSVersion(unsigned &Major, unsigned &Minor,
-                          unsigned &Micro) const {
+VersionTuple Triple::getOSVersion() const {
   StringRef OSName = getOSName();
   // Assume that the OS portion of the triple starts with the canonical name.
   StringRef OSTypeName = getOSTypeName(getOS());
@@ -1146,40 +1115,36 @@ void Triple::getOSVersion(unsigned &Major, unsigned &Minor,
   else if (getOS() == MacOSX)
     OSName.consume_front("macos");
 
-  parseVersionFromName(OSName, Major, Minor, Micro);
+  return parseVersionFromName(OSName);
 }
 
-bool Triple::getMacOSXVersion(unsigned &Major, unsigned &Minor,
-                              unsigned &Micro) const {
-  getOSVersion(Major, Minor, Micro);
+bool Triple::getMacOSXVersion(VersionTuple &Version) const {
+  Version = getOSVersion();
 
   switch (getOS()) {
   default: llvm_unreachable("unexpected OS for Darwin triple");
   case Darwin:
     // Default to darwin8, i.e., MacOSX 10.4.
-    if (Major == 0)
-      Major = 8;
+    if (Version.getMajor() == 0)
+      Version = VersionTuple(8);
     // Darwin version numbers are skewed from OS X versions.
-    if (Major < 4)
+    if (Version.getMajor() < 4) {
       return false;
-    if (Major <= 19) {
-      Micro = 0;
-      Minor = Major - 4;
-      Major = 10;
+    }
+    if (Version.getMajor() <= 19) {
+      Version = VersionTuple(10, Version.getMajor() - 4);
     } else {
-      Micro = 0;
-      Minor = 0;
       // darwin20+ corresponds to macOS 11+.
-      Major = 11 + Major - 20;
+      Version = VersionTuple(11 + Version.getMajor() - 20);
     }
     break;
   case MacOSX:
     // Default to 10.4.
-    if (Major == 0) {
-      Major = 10;
-      Minor = 4;
-    } else if (Major < 10)
+    if (Version.getMajor() == 0) {
+      Version = VersionTuple(10, 4);
+    } else if (Version.getMajor() < 10) {
       return false;
+    }
     break;
   case IOS:
   case TvOS:
@@ -1188,16 +1153,13 @@ bool Triple::getMacOSXVersion(unsigned &Major, unsigned &Minor,
     // the clang driver combines OS X and IOS support into a common Darwin
     // toolchain that wants to know the OS X version number even when targeting
     // IOS.
-    Major = 10;
-    Minor = 4;
-    Micro = 0;
+    Version = VersionTuple(10, 4);
     break;
   }
   return true;
 }
 
-void Triple::getiOSVersion(unsigned &Major, unsigned &Minor,
-                           unsigned &Micro) const {
+VersionTuple Triple::getiOSVersion() const {
   switch (getOS()) {
   default: llvm_unreachable("unexpected OS for Darwin triple");
   case Darwin:
@@ -1206,24 +1168,21 @@ void Triple::getiOSVersion(unsigned &Major, unsigned &Minor,
     // the clang driver combines OS X and IOS support into a common Darwin
     // toolchain that wants to know the iOS version number even when targeting
     // OS X.
-    Major = 5;
-    Minor = 0;
-    Micro = 0;
-    break;
+    return VersionTuple(5);
   case IOS:
-  case TvOS:
-    getOSVersion(Major, Minor, Micro);
+  case TvOS: {
+    VersionTuple Version = getOSVersion();
     // Default to 5.0 (or 7.0 for arm64).
-    if (Major == 0)
-      Major = (getArch() == aarch64) ? 7 : 5;
-    break;
+    if (Version.getMajor() == 0)
+      return (getArch() == aarch64) ? VersionTuple(7) : VersionTuple(5);
+    return Version;
+  }
   case WatchOS:
     llvm_unreachable("conflicting triple info");
   }
 }
 
-void Triple::getWatchOSVersion(unsigned &Major, unsigned &Minor,
-                               unsigned &Micro) const {
+VersionTuple Triple::getWatchOSVersion() const {
   switch (getOS()) {
   default: llvm_unreachable("unexpected OS for Darwin triple");
   case Darwin:
@@ -1232,15 +1191,13 @@ void Triple::getWatchOSVersion(unsigned &Major, unsigned &Minor,
     // the clang driver combines OS X and IOS support into a common Darwin
     // toolchain that wants to know the iOS version number even when targeting
     // OS X.
-    Major = 2;
-    Minor = 0;
-    Micro = 0;
-    break;
-  case WatchOS:
-    getOSVersion(Major, Minor, Micro);
-    if (Major == 0)
-      Major = 2;
-    break;
+    return VersionTuple(2);
+  case WatchOS: {
+    VersionTuple Version = getOSVersion();
+    if (Version.getMajor() == 0)
+      return VersionTuple(2);
+    return Version;
+  }
   case IOS:
     llvm_unreachable("conflicting triple info");
   }
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index d782d6352cbe..f7d3dd0bc222 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -346,9 +346,7 @@ bool AArch64Subtarget::supportsAddressTopByteIgnored() const {
     return false;
 
   if (TargetTriple.isiOS()) {
-    unsigned Major, Minor, Micro;
-    TargetTriple.getiOSVersion(Major, Minor, Micro);
-    return Major >= 8;
+    return TargetTriple.getiOSVersion() >= VersionTuple(8);
   }
 
   return false;
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index 19db774ccd7b..cbc5f03280e5 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -632,8 +632,7 @@ public:
     // extended frames should be flagged as present.
     const Triple &TT = getTargetTriple();
 
-    unsigned Major, Minor, Micro;
-    TT.getOSVersion(Major, Minor, Micro);
+    unsigned Major = TT.getOSVersion().getMajor();
     switch(TT.getOS()) {
     default:
       return false;
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index 9da54dc2e9b7..5d773f0c57df 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -958,8 +958,7 @@ public:
     // extended frames should be flagged as present.
     const Triple &TT = getTargetTriple();
 
-    unsigned Major, Minor, Micro;
-    TT.getOSVersion(Major, Minor, Micro);
+    unsigned Major = TT.getOSVersion().getMajor();
     switch(TT.getOS()) {
     default:
       return false;
diff --git a/llvm/unittests/ADT/TripleTest.cpp b/llvm/unittests/ADT/TripleTest.cpp
index a6a79ed5a39e..4853dfc13558 100644
--- a/llvm/unittests/ADT/TripleTest.cpp
+++ b/llvm/unittests/ADT/TripleTest.cpp
@@ -117,6 +117,18 @@ TEST(TripleTest, ParsedIDs) {
   EXPECT_EQ(Triple::Linux, T.getOS());
   EXPECT_EQ(Triple::MuslX32, T.getEnvironment());
 
+  T = Triple("arm-unknown-linux-android16");
+  EXPECT_EQ(Triple::arm, T.getArch());
+  EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
+  EXPECT_EQ(Triple::Linux, T.getOS());
+  EXPECT_EQ(Triple::Android, T.getEnvironment());
+
+  T = Triple("aarch64-unknown-linux-android21");
+  EXPECT_EQ(Triple::aarch64, T.getArch());
+  EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
+  EXPECT_EQ(Triple::Linux, T.getOS());
+  EXPECT_EQ(Triple::Android, T.getEnvironment());
+
   // PS4 has two spellings for the vendor.
   T = Triple("x86_64-scei-ps4");
   EXPECT_EQ(Triple::x86_64, T.getArch());
@@ -1261,7 +1273,7 @@ TEST(TripleTest, EndianArchVariants) {
 
 TEST(TripleTest, getOSVersion) {
   Triple T;
-  unsigned Major, Minor, Micro;
+  VersionTuple Version;
 
   T = Triple("i386-apple-darwin9");
   EXPECT_TRUE(T.isMacOSX());
@@ -1269,14 +1281,10 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_TRUE(T.isArch32Bit());
   EXPECT_FALSE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)5, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)5, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 5), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(5), Version);
 
   T = Triple("x86_64-apple-darwin9");
   EXPECT_TRUE(T.isMacOSX());
@@ -1284,14 +1292,10 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_FALSE(T.isArch32Bit());
   EXPECT_TRUE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)5, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)5, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 5), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(5), Version);
 
   T = Triple("x86_64-apple-macosx");
   EXPECT_TRUE(T.isMacOSX());
@@ -1299,14 +1303,10 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_FALSE(T.isArch32Bit());
   EXPECT_TRUE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)4, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)5, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 4), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(5), Version);
 
   T = Triple("x86_64-apple-macosx10.7");
   EXPECT_TRUE(T.isMacOSX());
@@ -1314,14 +1314,10 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_FALSE(T.isArch32Bit());
   EXPECT_TRUE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)7, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)5, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 7), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(5), Version);
 
   T = Triple("x86_64-apple-macos11.0");
   EXPECT_TRUE(T.isMacOSX());
@@ -1329,10 +1325,8 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_FALSE(T.isArch32Bit());
   EXPECT_TRUE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)11, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(11, 0), Version);
 
   T = Triple("arm64-apple-macosx11.5.8");
   EXPECT_TRUE(T.isMacOSX());
@@ -1340,34 +1334,26 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_FALSE(T.isArch32Bit());
   EXPECT_TRUE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)11, Major);
-  EXPECT_EQ((unsigned)5, Minor);
-  EXPECT_EQ((unsigned)8, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(11, 5, 8), Version);
 
   // 10.16 forms a valid triple, even though it's not
   // a version of a macOS.
   T = Triple("x86_64-apple-macos10.16");
   EXPECT_TRUE(T.isMacOSX());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)16, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 16), Version);
 
   T = Triple("x86_64-apple-darwin20");
   EXPECT_TRUE(T.isMacOSX());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)11, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(11), Version);
 
   // For darwin triples on macOS 11, only compare the major version.
   T = Triple("x86_64-apple-darwin20.2");
   EXPECT_TRUE(T.isMacOSX());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)11, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(11), Version);
 
   T = Triple("armv7-apple-ios");
   EXPECT_FALSE(T.isMacOSX());
@@ -1375,14 +1361,10 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_TRUE(T.isArch32Bit());
   EXPECT_FALSE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)4, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)5, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 4), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(5), Version);
 
   T = Triple("armv7-apple-ios7.0");
   EXPECT_FALSE(T.isMacOSX());
@@ -1390,36 +1372,45 @@ TEST(TripleTest, getOSVersion) {
   EXPECT_FALSE(T.isArch16Bit());
   EXPECT_TRUE(T.isArch32Bit());
   EXPECT_FALSE(T.isArch64Bit());
-  T.getMacOSXVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)4, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)7, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  T.getMacOSXVersion(Version);
+  EXPECT_EQ(VersionTuple(10, 4), Version);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(7, 0), Version);
   EXPECT_FALSE(T.isSimulatorEnvironment());
 
   T = Triple("x86_64-apple-ios10.3-simulator");
   EXPECT_TRUE(T.isiOS());
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)10, Major);
-  EXPECT_EQ((unsigned)3, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(10, 3), Version);
   EXPECT_TRUE(T.isSimulatorEnvironment());
   EXPECT_FALSE(T.isMacCatalystEnvironment());
 
   T = Triple("x86_64-apple-ios13.0-macabi");
   EXPECT_TRUE(T.isiOS());
-  T.getiOSVersion(Major, Minor, Micro);
-  EXPECT_EQ((unsigned)13, Major);
-  EXPECT_EQ((unsigned)0, Minor);
-  EXPECT_EQ((unsigned)0, Micro);
+  Version = T.getiOSVersion();
+  EXPECT_EQ(VersionTuple(13, 0), Version);
   EXPECT_TRUE(T.getEnvironment() == Triple::MacABI);
   EXPECT_TRUE(T.isMacCatalystEnvironment());
   EXPECT_FALSE(T.isSimulatorEnvironment());
 }
 
+TEST(TripleTest, getEnvironmentVersion) {
+  Triple T;
+  VersionTuple Version;
+
+  T = Triple("arm-unknown-linux-android16");
+  EXPECT_TRUE(T.isAndroid());
+  Version = T.getEnvironmentVersion();
+  EXPECT_EQ(VersionTuple(16), Version);
+  EXPECT_EQ(Triple::Android, T.getEnvironment());
+
+  T = Triple("aarch64-unknown-linux-android21");
+  EXPECT_TRUE(T.isAndroid());
+  Version = T.getEnvironmentVersion();
+  EXPECT_EQ(VersionTuple(21), Version);
+  EXPECT_EQ(Triple::Android, T.getEnvironment());
+}
+
 TEST(TripleTest, isMacOSVersionLT) {
   Triple T = Triple("x86_64-apple-macos11");
   EXPECT_TRUE(T.isMacOSXVersionLT(11, 1, 0));
@@ -1566,6 +1557,15 @@ TEST(TripleTest, NormalizeWindows) {
   EXPECT_TRUE(Triple("x86_64-pc-win32").isWindowsMSVCEnvironment());
 }
 
+TEST(TripleTest, NormalizeAndroid) {
+  EXPECT_EQ("arm-unknown-linux-android16",
+            Triple::normalize("arm-linux-androideabi16"));
+  EXPECT_EQ("armv7a-unknown-linux-android",
+            Triple::normalize("armv7a-linux-androideabi"));
+  EXPECT_EQ("aarch64-unknown-linux-android21",
+            Triple::normalize("aarch64-linux-android21"));
+}
+
 TEST(TripleTest, getARMCPUForArch) {
   // Platform specific defaults.
   {
diff --git a/llvm/unittests/Support/Host.cpp b/llvm/unittests/Support/Host.cpp
index 0d6e36b0ae7b..9c40cbc910eb 100644
--- a/llvm/unittests/Support/Host.cpp
+++ b/llvm/unittests/Support/Host.cpp
@@ -366,7 +366,6 @@ TEST(getLinuxHostCPUName, s390x) {
   }
 }
 
-#if defined(__APPLE__) || defined(_AIX)
 static bool runAndGetCommandOutput(
     const char *ExePath, ArrayRef<llvm::StringRef> argv,
     std::unique_ptr<char[]> &Buffer, off_t &Size) {
@@ -406,12 +405,9 @@ TEST_F(HostTest, DummyRunAndGetCommandOutputUse) {
   // disabled.
   (void) runAndGetCommandOutput;
 }
-#endif
 
-#if defined(__APPLE__)
 TEST_F(HostTest, getMacOSHostVersion) {
-  using namespace llvm::sys;
-  llvm::Triple HostTriple(getProcessTriple());
+  llvm::Triple HostTriple(llvm::sys::getProcessTriple());
   if (!HostTriple.isMacOSX())
     return;
 
@@ -420,34 +416,32 @@ TEST_F(HostTest, getMacOSHostVersion) {
   std::unique_ptr<char[]> Buffer;
   off_t Size;
   ASSERT_EQ(runAndGetCommandOutput(SwVersPath, argv, Buffer, Size), true);
-  StringRef SystemVersion(Buffer.get(), Size);
+  StringRef SystemVersionStr = StringRef(Buffer.get(), Size).rtrim();
 
   // Ensure that the two versions match.
-  unsigned SystemMajor, SystemMinor, SystemMicro;
-  ASSERT_EQ(llvm::Triple((Twine("x86_64-apple-macos") + SystemVersion))
-                .getMacOSXVersion(SystemMajor, SystemMinor, SystemMicro),
+  VersionTuple SystemVersion;
+  ASSERT_EQ(llvm::Triple((Twine("x86_64-apple-macos") + SystemVersionStr))
+                .getMacOSXVersion(SystemVersion),
             true);
-  unsigned HostMajor, HostMinor, HostMicro;
-  ASSERT_EQ(HostTriple.getMacOSXVersion(HostMajor, HostMinor, HostMicro), true);
+  VersionTuple HostVersion;
+  ASSERT_EQ(HostTriple.getMacOSXVersion(HostVersion), true);
 
-  if (SystemMajor > 10) {
+  if (SystemVersion.getMajor() > 10) {
     // Don't compare the 'Minor' and 'Micro' versions, as they're always '0' for
     // the 'Darwin' triples on 11.x.
-    ASSERT_EQ(SystemMajor, HostMajor);
+    ASSERT_EQ(SystemVersion.getMajor(), HostVersion.getMajor());
   } else {
     // Don't compare the 'Micro' version, as it's always '0' for the 'Darwin'
     // triples.
-    ASSERT_EQ(std::tie(SystemMajor, SystemMinor), std::tie(HostMajor, HostMinor));
+    ASSERT_EQ(SystemVersion.getMajor(), HostVersion.getMajor());
+    ASSERT_EQ(SystemVersion.getMinor(), HostVersion.getMinor());
   }
 }
-#endif
 
-#if defined(_AIX)
 TEST_F(HostTest, AIXVersionDetect) {
-  using namespace llvm::sys;
-
-  llvm::Triple HostTriple(getProcessTriple());
-  ASSERT_EQ(HostTriple.getOS(), Triple::AIX);
+  llvm::Triple HostTriple(llvm::sys::getProcessTriple());
+  if (HostTriple.getOS() != Triple::AIX)
+    return;
 
   llvm::Triple ConfiguredHostTriple(LLVM_HOST_TRIPLE);
   ASSERT_EQ(ConfiguredHostTriple.getOS(), Triple::AIX);
@@ -457,22 +451,21 @@ TEST_F(HostTest, AIXVersionDetect) {
   std::unique_ptr<char[]> Buffer;
   off_t Size;
   ASSERT_EQ(runAndGetCommandOutput(ExePath, argv, Buffer, Size), true);
-  StringRef SystemVersion(Buffer.get(), Size);
+  StringRef SystemVersionStr = StringRef(Buffer.get(), Size).rtrim();
 
-  unsigned SystemMajor, SystemMinor, SystemMicro;
-  llvm::Triple((Twine("powerpc-ibm-aix") + SystemVersion))
-      .getOSVersion(SystemMajor, SystemMinor, SystemMicro);
+  VersionTuple SystemVersion =
+      llvm::Triple((Twine("powerpc-ibm-aix") + SystemVersionStr))
+          .getOSVersion();
 
   // Ensure that the host triple version (major) and release (minor) numbers,
   // unless explicitly configured, match with those of the current system.
   if (!ConfiguredHostTriple.getOSMajorVersion()) {
-    unsigned HostMajor, HostMinor, HostMicro;
-    HostTriple.getOSVersion(HostMajor, HostMinor, HostMicro);
-    ASSERT_EQ(std::tie(SystemMajor, SystemMinor),
-              std::tie(HostMajor, HostMinor));
+    VersionTuple HostVersion = HostTriple.getOSVersion();
+    ASSERT_EQ(SystemVersion.getMajor(), HostVersion.getMajor());
+    ASSERT_EQ(SystemVersion.getMinor(), HostVersion.getMinor());
   }
 
-  llvm::Triple TargetTriple(getDefaultTargetTriple());
+  llvm::Triple TargetTriple(llvm::sys::getDefaultTargetTriple());
   if (TargetTriple.getOS() != Triple::AIX)
     return;
 
@@ -482,13 +475,16 @@ TEST_F(HostTest, AIXVersionDetect) {
   if (ConfiguredTargetTriple.getOSMajorVersion())
     return; // The version was configured explicitly; skip.
 
-  unsigned TargetMajor, TargetMinor, TargetMicro;
-  TargetTriple.getOSVersion(TargetMajor, TargetMinor, TargetMicro);
-  ASSERT_EQ(std::tie(SystemMajor, SystemMinor),
-            std::tie(TargetMajor, TargetMinor));
+  VersionTuple TargetVersion = TargetTriple.getOSVersion();
+  ASSERT_EQ(SystemVersion.getMajor(), TargetVersion.getMajor());
+  ASSERT_EQ(SystemVersion.getMinor(), TargetVersion.getMinor());
 }
 
 TEST_F(HostTest, AIXHostCPUDetect) {
+  llvm::Triple HostTriple(llvm::sys::getProcessTriple());
+  if (HostTriple.getOS() != Triple::AIX)
+    return;
+
   // Return a value based on the current processor implementation mode.
   const char *ExePath = "/usr/sbin/getsystype";
   StringRef argv[] = {ExePath, "-i"};
@@ -516,4 +512,3 @@ TEST_F(HostTest, AIXHostCPUDetect) {
 
   EXPECT_EQ(HostCPU, MCPU);
 }
-#endif
-- 
2.35.0.263.gb82422642f-goog