[PATCH] Initial support for Mach-O universal binaries in LLVMObject

[Rafael Ávila de Espíndola]

================
Comment at: include/llvm/Object/MachOUniversal.h:44
@@ +43,3 @@
+  // Stores descriptors for contained objects.
+  SmallVector<macho::FatArchHeader, 4> Objects;
+};
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Is it profitable to cache this? I expect the common cases to be

* User wants one architecture. We may as well scan when they call getObjectForArch instead of scanning in the constructor.
* User wants all the architectures. We should provide an iterator.


http://llvm-reviews.chandlerc.com/D978