LinkAllCodegenComponents.h revision 5c7e326585f3a543388ba871c3425f7664cd9143
1//===- llvm/Codegen/LinkAllCodegenComponents.h ------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file was developed by James M. Laskey and is distributed under the 6// University of Illinois Open Source 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/Passes.h" 19#include "llvm/CodeGen/ScheduleDAG.h" 20 21namespace { 22 struct ForceCodegenLinking { 23 ForceCodegenLinking() { 24 // We must reference the passes in such a way that compilers will not 25 // delete it all as dead code, even with whole program optimization, 26 // yet is effectively a NO-OP. As the compiler isn't smart enough 27 // to know that getenv() never returns -1, this will do the job. 28 if (std::getenv("bar") != (char*) -1) 29 return; 30 31 (void) llvm::createSimpleRegisterAllocator(); 32 (void) llvm::createLocalRegisterAllocator(); 33 (void) llvm::createLinearScanRegisterAllocator(); 34 (void) llvm::createGraphColoringRegisterAllocator(); 35 36 (void) llvm::createBFS_DAGScheduler(NULL, NULL, NULL); 37 (void) llvm::createSimpleDAGScheduler(NULL, NULL, NULL); 38 (void) llvm::createNoItinsDAGScheduler(NULL, NULL, NULL); 39 (void) llvm::createBURRListDAGScheduler(NULL, NULL, NULL); 40 (void) llvm::createTDRRListDAGScheduler(NULL, NULL, NULL); 41 (void) llvm::createTDListDAGScheduler(NULL, NULL, NULL); 42 (void) llvm::createDefaultScheduler(NULL, NULL, NULL); 43 44 } 45 } ForceCodegenLinking; // Force link by creating a global definition. 46} 47 48#endif 49