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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34504 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
//===- LoopPass.h - LoopPass class ----------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Devang Patel and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines LoopPass class. All loop optimization
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// and transformation passes are derived from LoopPass.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LOOP_PASS_H
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#define LLVM_LOOP_PASS_H
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#include "llvm/Analysis/LoopInfo.h"
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#include "llvm/Pass.h"
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#include "llvm/PassManagers.h"
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#include "llvm/Function.h"
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namespace llvm {
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class LPPassManager;
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class Loop;
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class Function;
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class LoopQueue;
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class LoopPass : public Pass {
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public:
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// runOnLoop - THis method should be implemented by the subclass to perform
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// whatever action is necessary for the specfied Loop.
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virtual bool runOnLoop (Loop &L, LPPassManager &LPM) = 0;
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virtual bool runOnFunctionBody (Function &F, LPPassManager &LPM) {
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return false;
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}
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};
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class LPPassManager : public FunctionPass, public PMDataManager {
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public:
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LPPassManager(int Depth);
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~LPPassManager();
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/// run - Execute all of the passes scheduled for execution. Keep track of
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/// whether any of the passes modifies the module, and if so, return true.
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bool runOnFunction(Function &F);
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/// Pass Manager itself does not invalidate any analysis info.
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void getAnalysisUsage(AnalysisUsage &Info) const {
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// LPPassManager needs LoopInfo. In the long term LoopInfo class will
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// be consumed by LPPassManager.
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Info.addRequired<LoopInfo>();
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Info.setPreservesAll();
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}
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virtual const char *getPassName() const {
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return "Loop Pass Manager";
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}
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// Print passes managed by this manager
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void dumpPassStructure(unsigned Offset) {
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llvm::cerr << std::string(Offset*2, ' ') << "Loop Pass Manager\n";
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for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
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Pass *P = getContainedPass(Index);
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P->dumpPassStructure(Offset + 1);
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dumpLastUses(P, Offset+1);
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}
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}
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Pass *getContainedPass(unsigned N) {
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assert ( N < PassVector.size() && "Pass number out of range!");
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Pass *FP = static_cast<Pass *>(PassVector[N]);
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return FP;
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}
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virtual PassManagerType getPassManagerType() {
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return PMT_LoopPassManager;
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}
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private:
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LoopQueue *LQ;
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};
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} // End llvm namespace
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#endif
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