1 //===---- Canonicalization.cpp - Run canonicalization passes ======-------===//
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 // Run the set of default canonicalization passes.
11 //
12 // This pass is mainly used for debugging.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #include "polly/LinkAllPasses.h"
17 #include "polly/Canonicalization.h"
18 #include "llvm/Transforms/Scalar.h"
19 
20 using namespace llvm;
21 using namespace polly;
22 
23 void polly::registerCanonicalicationPasses(llvm::legacy::PassManagerBase &PM) {
24   PM.add(llvm::createPromoteMemoryToRegisterPass());
25   PM.add(llvm::createInstructionCombiningPass());
26   PM.add(llvm::createCFGSimplificationPass());
27   PM.add(llvm::createTailCallEliminationPass());
28   PM.add(llvm::createCFGSimplificationPass());
29   PM.add(llvm::createReassociatePass());
30   PM.add(llvm::createLoopRotatePass());
31   PM.add(llvm::createInstructionCombiningPass());
32   PM.add(polly::createCodePreparationPass());
33 }
34 
35 namespace {
36 class PollyCanonicalize : public ModulePass {
37   PollyCanonicalize(const PollyCanonicalize &) = delete;
38   const PollyCanonicalize &operator=(const PollyCanonicalize &) = delete;
39 
40 public:
41   static char ID;
42 
43   explicit PollyCanonicalize() : ModulePass(ID) {}
44   ~PollyCanonicalize();
45 
46   /// @name FunctionPass interface.
47   //@{
48   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
49   virtual void releaseMemory();
50   virtual bool runOnModule(Module &M);
51   virtual void print(raw_ostream &OS, const Module *) const;
52   //@}
53 };
54 }
55 
56 PollyCanonicalize::~PollyCanonicalize() {}
57 
58 void PollyCanonicalize::getAnalysisUsage(AnalysisUsage &AU) const {}
59 
60 void PollyCanonicalize::releaseMemory() {}
61 
62 bool PollyCanonicalize::runOnModule(Module &M) {
63   legacy::PassManager PM;
64   registerCanonicalicationPasses(PM);
65   PM.run(M);
66 
67   return true;
68 }
69 
70 void PollyCanonicalize::print(raw_ostream &OS, const Module *) const {}
71 
72 char PollyCanonicalize::ID = 0;
73 
74 Pass *polly::createPollyCanonicalizePass() { return new PollyCanonicalize(); }
75 
76 INITIALIZE_PASS_BEGIN(PollyCanonicalize, "polly-canonicalize",
77                       "Polly - Run canonicalization passes", false, false)
78 INITIALIZE_PASS_END(PollyCanonicalize, "polly-canonicalize",
79                     "Polly - Run canonicalization passes", false, false)
80