[PATCH] [COMPILER-RT] Fix CMake build for Apple/Darwin without Xcode and for universal build

[Alexey Samsonov]

I'll let Kuba look into it.


REPOSITORY
  rL LLVM

================
Comment at: cmake/config-ix.cmake:164
@@ +163,3 @@
+      if(APPLE)
+        set(CMAKE_TRY_COMPILE_OSX_ARCHITECTURES x86_64)
+      endif()
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shouldn't this be set/unset in test_target_arch?

http://reviews.llvm.org/D8936

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