LinkAllCodegenComponents.h revision 2e9d5f912a9841d3685ba0241abe1131943fed29 
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
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::createDeadMachineInstructionElimPass();
33
34      (void) llvm::createSimpleRegisterAllocator();
35      (void) llvm::createLocalRegisterAllocator();
36      (void) llvm::createBigBlockRegisterAllocator();
37      (void) llvm::createLinearScanRegisterAllocator();
38      (void) llvm::createPBQPRegisterAllocator();
39
40      (void) llvm::createSimpleRegisterCoalescer();
41
42      llvm::linkOcamlGC();
43      llvm::linkShadowStackGC();
44
45      (void) llvm::createBURRListDAGScheduler(NULL, 3);
46      (void) llvm::createTDRRListDAGScheduler(NULL, 3);
47      (void) llvm::createTDListDAGScheduler(NULL, 3);
48      (void) llvm::createFastDAGScheduler(NULL, 3);
49      (void) llvm::createDefaultScheduler(NULL, 3);
50
51    }
52  } ForceCodegenLinking; // Force link by creating a global definition.
53}
54
55#endif
56