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::PassManagerBase &PM,
24                                            bool SCEVCodegen) {
25   PM.add(llvm::createPromoteMemoryToRegisterPass());
26   PM.add(llvm::createPromoteMemoryToRegisterPass());
27   PM.add(llvm::createInstructionCombiningPass());
28   PM.add(llvm::createCFGSimplificationPass());
29   PM.add(llvm::createTailCallEliminationPass());
30   PM.add(llvm::createCFGSimplificationPass());
31   PM.add(llvm::createReassociatePass());
32   PM.add(llvm::createLoopRotatePass());
33   PM.add(llvm::createInstructionCombiningPass());
34 
35   if (!SCEVCodegen)
36     PM.add(polly::createIndVarSimplifyPass());
37 
38   PM.add(polly::createCodePreparationPass());
39 }
40 
41 namespace {
42 class PollyCanonicalize : public ModulePass {
43   PollyCanonicalize(const PollyCanonicalize &) LLVM_DELETED_FUNCTION;
44   const PollyCanonicalize &
45   operator=(const PollyCanonicalize &) LLVM_DELETED_FUNCTION;
46 
47 public:
48   static char ID;
49 
50   explicit PollyCanonicalize() : ModulePass(ID) {}
51   ~PollyCanonicalize();
52 
53   /// @name FunctionPass interface.
54   //@{
55   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
56   virtual void releaseMemory();
57   virtual bool runOnModule(Module &M);
58   virtual void print(raw_ostream &OS, const Module *) const;
59   //@}
60 };
61 }
62 
63 PollyCanonicalize::~PollyCanonicalize() {}
64 
65 void PollyCanonicalize::getAnalysisUsage(AnalysisUsage &AU) const {}
66 
67 void PollyCanonicalize::releaseMemory() {}
68 
69 bool PollyCanonicalize::runOnModule(Module &M) {
70   PassManager PM;
71   registerCanonicalicationPasses(PM);
72   PM.run(M);
73 
74   return true;
75 }
76 
77 void PollyCanonicalize::print(raw_ostream &OS, const Module *) const {}
78 
79 char PollyCanonicalize::ID = 0;
80 
81 Pass *polly::createPollyCanonicalizePass() { return new PollyCanonicalize(); }
82 
83 INITIALIZE_PASS_BEGIN(PollyCanonicalize, "polly-canonicalize",
84                       "Polly - Run canonicalization passes", false, false)
85 INITIALIZE_PASS_END(PollyCanonicalize, "polly-canonicalize",
86                     "Polly - Run canonicalization passes", false, false)
87