Rebased PNaCl localmods in LLVM to 223109

include/llvm/CodeGen/LinkAllCodegenComponents.h

 //===- llvm/Codegen/LinkAllCodegenComponents.h ------------------*- C++ -*-===//
 //
 //                      The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This header file pulls in all codegen related passes for tools like lli and
@@ skipping 16 matching lines @@
       // We must reference the passes in such a way that compilers will not
       // delete it all as dead code, even with whole program optimization,
       // yet is effectively a NO-OP. As the compiler isn't smart enough
       // to know that getenv() never returns -1, this will do the job.
       if (std::getenv("bar") != (char*) -1)
         return;
 
       (void) llvm::createFastRegisterAllocator();
       (void) llvm::createBasicRegisterAllocator();
       (void) llvm::createGreedyRegisterAllocator();
+#if !defined(__native_client__)
+      // Not needed by sandboxed translator.
       (void) llvm::createDefaultPBQPRegisterAllocator();
+#endif
 
       llvm::linkOcamlGC();
       llvm::linkErlangGC();
       llvm::linkShadowStackGC();
 
       (void) llvm::createBURRListDAGScheduler(nullptr,
                                               llvm::CodeGenOpt::Default);
       (void) llvm::createSourceListDAGScheduler(nullptr,
                                                 llvm::CodeGenOpt::Default);
       (void) llvm::createHybridListDAGScheduler(nullptr,
                                                 llvm::CodeGenOpt::Default);
       (void) llvm::createFastDAGScheduler(nullptr, llvm::CodeGenOpt::Default);
       (void) llvm::createDefaultScheduler(nullptr, llvm::CodeGenOpt::Default);
       (void) llvm::createVLIWDAGScheduler(nullptr, llvm::CodeGenOpt::Default);
 
     }
   } ForceCodegenLinking; // Force link by creating a global definition.
 }
 
 #endif