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122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
//===- llvm/PassInfo.h - Pass Info class ------------------------*- C++ -*-===//
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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 and implements the PassInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PASSINFO_H
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#define LLVM_PASSINFO_H
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#include "llvm/ADT/StringRef.h"
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#include <cassert>
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#include <vector>
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namespace llvm {
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class Pass;
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//===---------------------------------------------------------------------------
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/// PassInfo class - An instance of this class exists for every pass known by
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/// the system, and can be obtained from a live Pass by calling its
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/// getPassInfo() method. These objects are set up by the RegisterPass<>
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/// template.
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///
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class PassInfo {
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public:
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using NormalCtor_t = Pass* (*)();
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private:
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StringRef PassName; // Nice name for Pass
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StringRef PassArgument; // Command Line argument to run this pass
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const void *PassID;
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const bool IsCFGOnlyPass = false; // Pass only looks at the CFG.
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const bool IsAnalysis; // True if an analysis pass.
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const bool IsAnalysisGroup; // True if an analysis group.
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std::vector<const PassInfo *> ItfImpl; // Interfaces implemented by this pass
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NormalCtor_t NormalCtor = nullptr;
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public:
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/// PassInfo ctor - Do not call this directly, this should only be invoked
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/// through RegisterPass.
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PassInfo(StringRef name, StringRef arg, const void *pi, NormalCtor_t normal,
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bool isCFGOnly, bool is_analysis)
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: PassName(name), PassArgument(arg), PassID(pi), IsCFGOnlyPass(isCFGOnly),
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IsAnalysis(is_analysis), IsAnalysisGroup(false), NormalCtor(normal) {}
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/// PassInfo ctor - Do not call this directly, this should only be invoked
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/// through RegisterPass. This version is for use by analysis groups; it
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/// does not auto-register the pass.
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PassInfo(StringRef name, const void *pi)
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: PassName(name), PassID(pi), IsAnalysis(false), IsAnalysisGroup(true) {}
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PassInfo(const PassInfo &) = delete;
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PassInfo &operator=(const PassInfo &) = delete;
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/// getPassName - Return the friendly name for the pass, never returns null
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StringRef getPassName() const { return PassName; }
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/// getPassArgument - Return the command line option that may be passed to
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/// 'opt' that will cause this pass to be run. This will return null if there
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/// is no argument.
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StringRef getPassArgument() const { return PassArgument; }
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/// getTypeInfo - Return the id object for the pass...
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/// TODO : Rename
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const void *getTypeInfo() const { return PassID; }
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/// Return true if this PassID implements the specified ID pointer.
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bool isPassID(const void *IDPtr) const { return PassID == IDPtr; }
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/// isAnalysisGroup - Return true if this is an analysis group, not a normal
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/// pass.
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bool isAnalysisGroup() const { return IsAnalysisGroup; }
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bool isAnalysis() const { return IsAnalysis; }
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/// isCFGOnlyPass - return true if this pass only looks at the CFG for the
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/// function.
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bool isCFGOnlyPass() const { return IsCFGOnlyPass; }
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/// getNormalCtor - Return a pointer to a function, that when called, creates
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/// an instance of the pass and returns it. This pointer may be null if there
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/// is no default constructor for the pass.
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NormalCtor_t getNormalCtor() const {
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return NormalCtor;
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}
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void setNormalCtor(NormalCtor_t Ctor) {
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NormalCtor = Ctor;
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}
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/// createPass() - Use this method to create an instance of this pass.
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Pass *createPass() const {
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assert((!isAnalysisGroup() || NormalCtor) &&
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"No default implementation found for analysis group!");
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assert(NormalCtor &&
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"Cannot call createPass on PassInfo without default ctor!");
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return NormalCtor();
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}
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/// addInterfaceImplemented - This method is called when this pass is
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/// registered as a member of an analysis group with the RegisterAnalysisGroup
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/// template.
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void addInterfaceImplemented(const PassInfo *ItfPI) {
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ItfImpl.push_back(ItfPI);
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}
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/// getInterfacesImplemented - Return a list of all of the analysis group
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/// interfaces implemented by this pass.
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const std::vector<const PassInfo*> &getInterfacesImplemented() const {
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return ItfImpl;
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}
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};
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} // end namespace llvm
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#endif // LLVM_PASSINFO_H
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