[llvm] Teach MachO about XROS (#78373)

Add support for XROS to encode in Mach-O file formats.

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/MC/MCStreamer.cpp b/llvm/lib/MC/MCStreamer.cpp
index 0062d08..bc145ae 100644
--- a/llvm/lib/MC/MCStreamer.cpp
+++ b/llvm/lib/MC/MCStreamer.cpp
@@ -1313,6 +1313,9 @@ static VersionTuple getMachoBuildVersionSupportedOS(const Triple &Target) {
   case Triple::DriverKit:
     // DriverKit always uses the build version load command.
     return VersionTuple();
+  case Triple::XROS:
+    // XROS always uses the build version load command.
+    return VersionTuple();
   default:
     break;
   }
@@ -1339,6 +1342,9 @@ getMachoBuildVersionPlatformType(const Triple &Target) {
                                            : MachO::PLATFORM_WATCHOS;
   case Triple::DriverKit:
     return MachO::PLATFORM_DRIVERKIT;
+  case Triple::XROS:
+    return Target.isSimulatorEnvironment() ? MachO::PLATFORM_XROS_SIMULATOR
+                                           : MachO::PLATFORM_XROS;
   default:
     break;
   }
@@ -1371,6 +1377,9 @@ void MCStreamer::emitVersionForTarget(
   case Triple::DriverKit:
     Version = Target.getDriverKitVersion();
     break;
+  case Triple::XROS:
+    Version = Target.getOSVersion();
+    break;
   default:
     llvm_unreachable("unexpected OS type");
   }