LinkAllCodegenComponents.h revision 4576f6d7a9c0f2c6a3b6c5d4d8a3063bbf763ae5 
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/ScheduleDAG.h"
20#include "llvm/CodeGen/Collectors.h"
21
22namespace {
23  struct ForceCodegenLinking {
24    ForceCodegenLinking() {
25      // We must reference the passes in such a way that compilers will not
26      // delete it all as dead code, even with whole program optimization,
27      // yet is effectively a NO-OP. As the compiler isn't smart enough
28      // to know that getenv() never returns -1, this will do the job.
29      if (std::getenv("bar") != (char*) -1)
30        return;
31
32      (void) llvm::createSimpleRegisterAllocator();
33      (void) llvm::createLocalRegisterAllocator();
34      (void) llvm::createBigBlockRegisterAllocator();
35      (void) llvm::createLinearScanRegisterAllocator();
36
37      (void) llvm::createSimpleRegisterCoalescer();
38
39      (void) llvm::createOcamlCollector();
40      (void) llvm::createShadowStackCollector();
41
42      (void) llvm::createBURRListDAGScheduler(NULL, NULL, NULL, false);
43      (void) llvm::createTDRRListDAGScheduler(NULL, NULL, NULL, false);
44      (void) llvm::createTDListDAGScheduler(NULL, NULL, NULL, false);
45      (void) llvm::createDefaultScheduler(NULL, NULL, NULL, false);
46
47    }
48  } ForceCodegenLinking; // Force link by creating a global definition.
49}
50
51#endif
52