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       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           0 :     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           0 :       if (std::getenv("bar") != (char*) -1)
      32           0 :         return;
      33             : 
      34           0 :       (void) llvm::createFastRegisterAllocator();
      35           0 :       (void) llvm::createBasicRegisterAllocator();
      36           0 :       (void) llvm::createGreedyRegisterAllocator();
      37           0 :       (void) llvm::createDefaultPBQPRegisterAllocator();
      38             : 
      39           0 :       llvm::linkCoreCLRGC();
      40           0 :       llvm::linkOcamlGC();
      41           0 :       llvm::linkErlangGC();
      42           0 :       llvm::linkShadowStackGC();
      43           0 :       llvm::linkStatepointExampleGC();
      44             : 
      45           0 :       (void) llvm::createBURRListDAGScheduler(nullptr,
      46             :                                               llvm::CodeGenOpt::Default);
      47           0 :       (void) llvm::createSourceListDAGScheduler(nullptr,
      48             :                                                 llvm::CodeGenOpt::Default);
      49           0 :       (void) llvm::createHybridListDAGScheduler(nullptr,
      50             :                                                 llvm::CodeGenOpt::Default);
      51           0 :       (void) llvm::createFastDAGScheduler(nullptr, llvm::CodeGenOpt::Default);
      52           0 :       (void) llvm::createDefaultScheduler(nullptr, llvm::CodeGenOpt::Default);
      53           0 :       (void) llvm::createVLIWDAGScheduler(nullptr, llvm::CodeGenOpt::Default);
      54             : 
      55             :     }
      56             :   } ForceCodegenLinking; // Force link by creating a global definition.
      57             : }
      58             : 
      59             : #endif