LinkAllCodegenComponents.h revision ff764815e6531be6b2d944bd6a3f1fcfc682db01 
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/Passes.h"
19#include "llvm/CodeGen/SchedulerRegistry.h"
20#include "llvm/CodeGen/GCs.h"
21#include "llvm/Target/TargetMachine.h"
22#include <cstdlib>
23
24namespace {
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::createDeadMachineInstructionElimPass();
35
36      (void) llvm::createFastRegisterAllocator();
37      (void) llvm::createBasicRegisterAllocator();
38      (void) llvm::createLinearScanRegisterAllocator();
39      (void) llvm::createGreedyRegisterAllocator();
40      (void) llvm::createDefaultPBQPRegisterAllocator();
41
42      llvm::linkOcamlGC();
43      llvm::linkShadowStackGC();
44
45      (void) llvm::createBURRListDAGScheduler(NULL, llvm::CodeGenOpt::Default);
46      (void) llvm::createSourceListDAGScheduler(NULL,llvm::CodeGenOpt::Default);
47      (void) llvm::createHybridListDAGScheduler(NULL,llvm::CodeGenOpt::Default);
48      (void) llvm::createTDListDAGScheduler(NULL, llvm::CodeGenOpt::Default);
49      (void) llvm::createFastDAGScheduler(NULL, llvm::CodeGenOpt::Default);
50      (void) llvm::createDefaultScheduler(NULL, llvm::CodeGenOpt::Default);
51
52    }
53  } ForceCodegenLinking; // Force link by creating a global definition.
54}
55
56#endif
57