[compiler-rt] [compiler-rt] Adds builtins support for xros. (PR #83484)

[via llvm-commits]

https://github.com/rohit-rao created https://github.com/llvm/llvm-project/pull/83484

Adds support for xros when compiling builtins. This is disabled by default and controlled with COMPILER_RT_ENABLE_XROS, similar to watchOS/tvOS.

>From 0648f12f96c2da091cc9fa681c81802faeab2a05 Mon Sep 17 00:00:00 2001
From: Rohit Rao <rohitrao at google.com>
Date: Thu, 29 Feb 2024 16:16:24 -0500
Subject: [PATCH] [compiler-rt] Adds builtins support for xros.

---
 compiler-rt/cmake/builtin-config-ix.cmake | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/compiler-rt/cmake/builtin-config-ix.cmake b/compiler-rt/cmake/builtin-config-ix.cmake
index b17c43bf6a68b8..7cd286f1c3ee8b 100644
--- a/compiler-rt/cmake/builtin-config-ix.cmake
+++ b/compiler-rt/cmake/builtin-config-ix.cmake
@@ -92,6 +92,8 @@ if(APPLE)
   find_darwin_sdk_dir(DARWIN_watchos_SYSROOT watchos)
   find_darwin_sdk_dir(DARWIN_tvossim_SYSROOT appletvsimulator)
   find_darwin_sdk_dir(DARWIN_tvos_SYSROOT appletvos)
+  find_darwin_sdk_dir(DARWIN_xrossim_SYSROOT xrsimulator)
+  find_darwin_sdk_dir(DARWIN_xros_SYSROOT xros)
 
   # Get supported architecture from SDKSettings.
   function(sdk_has_arch_support sdk_path os arch has_support)
@@ -162,6 +164,11 @@ if(APPLE)
       list(APPEND DARWIN_tvossim_BUILTIN_ALL_POSSIBLE_ARCHS arm64)
     endif()
   endif()
+  if(COMPILER_RT_ENABLE_XROS)
+    list(APPEND DARWIN_EMBEDDED_PLATFORMS xros)
+    set(DARWIN_xros_BUILTIN_ALL_POSSIBLE_ARCHS arm64)
+    set(DARWIN_xrossim_BUILTIN_ALL_POSSIBLE_ARCHS ${X86_64} arm64)
+  endif()
 
   set(BUILTIN_SUPPORTED_OS osx)