[clang] [clang-tools-extra] [libcxx] [clang] Enable sized deallocation by default in C++14 onwards (PR #83774)

[Louis Dionne via cfe-commits]

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@@ -2912,16 +2912,70 @@ static bool sdkSupportsBuiltinModules(const Darwin::DarwinPlatformKind &TargetPl
   }
 }
 
-void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
-                                   llvm::opt::ArgStringList &CC1Args,
-                                   Action::OffloadKind DeviceOffloadKind) const {
+static inline llvm::VersionTuple
+sizedDeallocMinVersion(llvm::Triple::OSType OS) {
+  switch (OS) {
+  default:
+    break;
+  case llvm::Triple::Darwin:
+  case llvm::Triple::MacOSX: // Earliest supporting version is 10.12.
+    return llvm::VersionTuple(10U, 12U);
+  case llvm::Triple::IOS:
+  case llvm::Triple::TvOS: // Earliest supporting version is 10.0.0.
+    return llvm::VersionTuple(10U);
+  case llvm::Triple::WatchOS: // Earliest supporting version is 3.0.0.
+    return llvm::VersionTuple(3U);
+  case llvm::Triple::ZOS:
+    return llvm::VersionTuple(); // All z/OS versions have no support.
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ldionne wrote:

zOS is not a thing on Darwin -- I don't think you meant to check this here.

https://github.com/llvm/llvm-project/pull/83774