1 //===- llvm/Codegen/LinkAllCodegenComponents.h ------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This header file pulls in all codegen related passes for tools like lli and 11 // llc that need this functionality. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CODEGEN_LINKALLCODEGENCOMPONENTS_H 16 #define LLVM_CODEGEN_LINKALLCODEGENCOMPONENTS_H 17 18 #include "llvm/CodeGen/GCs.h" 19 #include "llvm/CodeGen/Passes.h" 20 #include "llvm/CodeGen/SchedulerRegistry.h" 21 #include "llvm/Target/TargetMachine.h" 22 #include <cstdlib> 23 24 namespace { 25 struct ForceCodegenLinking { 26 ForceCodegenLinking() { 27 // We must reference the passes in such a way that compilers will not 28 // delete it all as dead code, even with whole program optimization, 29 // yet is effectively a NO-OP. As the compiler isn't smart enough 30 // to know that getenv() never returns -1, this will do the job. 31 if (std::getenv("bar") != (char*) -1) 32 return; 33 34 (void) llvm::createFastRegisterAllocator(); 35 (void) llvm::createBasicRegisterAllocator(); 36 (void) llvm::createGreedyRegisterAllocator(); 37 (void) llvm::createDefaultPBQPRegisterAllocator(); 38 39 llvm::linkOcamlGC(); 40 llvm::linkErlangGC(); 41 llvm::linkShadowStackGC(); 42 43 (void) llvm::createBURRListDAGScheduler(NULL, llvm::CodeGenOpt::Default); 44 (void) llvm::createSourceListDAGScheduler(NULL,llvm::CodeGenOpt::Default); 45 (void) llvm::createHybridListDAGScheduler(NULL,llvm::CodeGenOpt::Default); 46 (void) llvm::createFastDAGScheduler(NULL, llvm::CodeGenOpt::Default); 47 (void) llvm::createDefaultScheduler(NULL, llvm::CodeGenOpt::Default); 48 (void) llvm::createVLIWDAGScheduler(NULL, llvm::CodeGenOpt::Default); 49 50 } 51 } ForceCodegenLinking; // Force link by creating a global definition. 52 } 53 54 #endif 55