mirror of
https://github.com/c64scene-ar/llvm-6502.git
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0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
//===- RegionPass.h - RegionPass class ------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// 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 the RegionPass class. All region based analysis,
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// optimization and transformation passes are derived from RegionPass.
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// This class is implemented following the some ideas of the LoopPass.h class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_REGION_PASS_H
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#define LLVM_REGION_PASS_H
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#include "llvm/Analysis/RegionInfo.h"
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#include "llvm/IR/Function.h"
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#include "llvm/Pass.h"
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#include "llvm/PassManagers.h"
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#include <deque>
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namespace llvm {
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class RGPassManager;
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class Function;
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//===----------------------------------------------------------------------===//
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/// @brief A pass that runs on each Region in a function.
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///
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/// RegionPass is managed by RGPassManager.
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class RegionPass : public Pass {
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public:
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explicit RegionPass(char &pid) : Pass(PT_Region, pid) {}
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//===--------------------------------------------------------------------===//
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/// @name To be implemented by every RegionPass
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///
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//@{
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/// @brief Run the pass on a specific Region
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///
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/// Accessing regions not contained in the current region is not allowed.
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///
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/// @param R The region this pass is run on.
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/// @param RGM The RegionPassManager that manages this Pass.
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///
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/// @return True if the pass modifies this Region.
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virtual bool runOnRegion(Region *R, RGPassManager &RGM) = 0;
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/// @brief Get a pass to print the LLVM IR in the region.
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///
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/// @param O The ouput stream to print the Region.
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/// @param Banner The banner to separate different printed passes.
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///
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/// @return The pass to print the LLVM IR in the region.
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Pass *createPrinterPass(raw_ostream &O, const std::string &Banner) const;
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using llvm::Pass::doInitialization;
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using llvm::Pass::doFinalization;
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virtual bool doInitialization(Region *R, RGPassManager &RGM) { return false; }
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virtual bool doFinalization() { return false; }
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//@}
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//===--------------------------------------------------------------------===//
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/// @name PassManager API
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///
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//@{
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void preparePassManager(PMStack &PMS);
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virtual void assignPassManager(PMStack &PMS,
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PassManagerType PMT = PMT_RegionPassManager);
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virtual PassManagerType getPotentialPassManagerType() const {
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return PMT_RegionPassManager;
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}
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//@}
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};
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/// @brief The pass manager to schedule RegionPasses.
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class RGPassManager : public FunctionPass, public PMDataManager {
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std::deque<Region*> RQ;
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bool skipThisRegion;
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bool redoThisRegion;
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RegionInfo *RI;
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Region *CurrentRegion;
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public:
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static char ID;
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explicit RGPassManager();
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/// @brief Execute all of the passes scheduled for execution.
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///
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/// @return True if any of the passes modifies the function.
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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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/// RGPassManager needs RegionInfo.
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void getAnalysisUsage(AnalysisUsage &Info) const;
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virtual const char *getPassName() const {
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return "Region Pass Manager";
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}
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virtual PMDataManager *getAsPMDataManager() { return this; }
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virtual Pass *getAsPass() { return this; }
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/// @brief Print passes managed by this manager.
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void dumpPassStructure(unsigned Offset);
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/// @brief Get passes contained by this manager.
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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() const {
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return PMT_RegionPassManager;
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}
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};
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} // End llvm namespace
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#endif
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