X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FPassManagers.h;h=dffc24a41ca734deb8e4b8e9fb77c9cd6d3c199b;hb=cb8544fb9e89787f876c37fd1d81ee6c80a10fb5;hp=eaa6f442709d2e64f9627c494945ad6f9caca64f;hpb=0961ec1afe336a0a4f523455c25f5d5edc8d3ee1;p=oota-llvm.git diff --git a/include/llvm/PassManagers.h b/include/llvm/PassManagers.h index eaa6f442709..dffc24a41ca 100644 --- a/include/llvm/PassManagers.h +++ b/include/llvm/PassManagers.h @@ -1,4 +1,4 @@ -//===- llvm/PassManager.h - Pass Inftrastructre classes --------*- C++ -*-===// +//===- llvm/PassManagers.h - Pass Infrastructure classes -------*- C++ -*-===// // // The LLVM Compiler Infrastructure // @@ -11,8 +11,15 @@ // //===----------------------------------------------------------------------===// +#ifndef LLVM_PASSMANAGERS_H +#define LLVM_PASSMANAGERS_H + #include "llvm/PassManager.h" #include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/SmallPtrSet.h" +#include "llvm/ADT/DenseMap.h" +#include +#include //===----------------------------------------------------------------------===// // Overview: @@ -26,8 +33,8 @@ // // Pass Manager Infrastructure uses multiple pass managers. They are // PassManager, FunctionPassManager, MPPassManager, FPPassManager, BBPassManager. -// This class hierarcy uses multiple inheritance but pass managers do not derive -// from another pass manager. +// This class hierarchy uses multiple inheritance but pass managers do not +// derive from another pass manager. // // PassManager and FunctionPassManager are two top-level pass manager that // represents the external interface of this entire pass manager infrastucture. @@ -81,10 +88,14 @@ // MPPassManagers. //===----------------------------------------------------------------------===// -#ifndef PASSMANAGERS_H -#define PASSMANAGERS_H +#include "llvm/Support/PrettyStackTrace.h" namespace llvm { + class Module; + class Pass; + class StringRef; + class Value; + class Timer; /// FunctionPassManager and PassManager, two top level managers, serve /// as the public interface of pass manager infrastructure. @@ -105,6 +116,55 @@ enum PassDebuggingString { ON_CG_MSG // "' on Call Graph ...\n'" }; +/// PassManagerPrettyStackEntry - This is used to print informative information +/// about what pass is running when/if a stack trace is generated. +class PassManagerPrettyStackEntry : public PrettyStackTraceEntry { + Pass *P; + Value *V; + Module *M; +public: + explicit PassManagerPrettyStackEntry(Pass *p) + : P(p), V(0), M(0) {} // When P is releaseMemory'd. + PassManagerPrettyStackEntry(Pass *p, Value &v) + : P(p), V(&v), M(0) {} // When P is run on V + PassManagerPrettyStackEntry(Pass *p, Module &m) + : P(p), V(0), M(&m) {} // When P is run on M + + /// print - Emit information about this stack frame to OS. + virtual void print(raw_ostream &OS) const; +}; + + +//===----------------------------------------------------------------------===// +// PMStack +// +/// PMStack +/// Top level pass managers (see PassManager.cpp) maintain active Pass Managers +/// using PMStack. Each Pass implements assignPassManager() to connect itself +/// with appropriate manager. assignPassManager() walks PMStack to find +/// suitable manager. +/// +/// PMStack is just a wrapper around standard deque that overrides pop() and +/// push() methods. +class PMStack { +public: + typedef std::deque::reverse_iterator iterator; + iterator begin() { return S.rbegin(); } + iterator end() { return S.rend(); } + + void handleLastUserOverflow(); + + void pop(); + inline PMDataManager *top() { return S.back(); } + void push(PMDataManager *PM); + inline bool empty() { return S.empty(); } + + void dump(); +private: + std::deque S; +}; + + //===----------------------------------------------------------------------===// // PMTopLevelManager // @@ -113,8 +173,8 @@ enum PassDebuggingString { class PMTopLevelManager { public: - virtual unsigned getNumContainedManagers() { - return PassManagers.size(); + virtual unsigned getNumContainedManagers() const { + return (unsigned)PassManagers.size(); } /// Schedule pass P for execution. Make sure that passes required by @@ -137,6 +197,9 @@ public: /// then return NULL. Pass *findAnalysisPass(AnalysisID AID); + /// Find analysis usage information for the pass P. + AnalysisUsage *findAnalysisUsage(Pass *P); + explicit PMTopLevelManager(enum TopLevelManagerType t); virtual ~PMTopLevelManager(); @@ -146,7 +209,7 @@ public: ImmutablePasses.push_back(P); } - inline std::vector& getImmutablePasses() { + inline SmallVector& getImmutablePasses() { return ImmutablePasses; } @@ -172,20 +235,27 @@ public: protected: /// Collection of pass managers - std::vector PassManagers; + SmallVector PassManagers; private: /// Collection of pass managers that are not directly maintained /// by this pass manager - std::vector IndirectPassManagers; + SmallVector IndirectPassManagers; // Map to keep track of last user of the analysis pass. // LastUser->second is the last user of Lastuser->first. - std::map LastUser; + DenseMap LastUser; + + // Map to keep track of passes that are last used by a pass. + // This inverse map is initialized at PM->run() based on + // LastUser map. + DenseMap > InversedLastUser; /// Immutable passes are managed by top level manager. - std::vector ImmutablePasses; + SmallVector ImmutablePasses; + + DenseMap AnUsageMap; }; @@ -213,8 +283,13 @@ public: /// Remove Analysis that is not preserved by the pass void removeNotPreservedAnalysis(Pass *P); - /// Remove dead passes - void removeDeadPasses(Pass *P, const char *Msg, enum PassDebuggingString); + /// Remove dead passes used by P. + void removeDeadPasses(Pass *P, StringRef Msg, + enum PassDebuggingString); + + /// Remove P. + void freePass(Pass *P, StringRef Msg, + enum PassDebuggingString); /// Add pass P into the PassVector. Update /// AvailableAnalysis appropriately if ProcessAnalysis is true. @@ -269,12 +344,12 @@ public: void dumpLastUses(Pass *P, unsigned Offset) const; void dumpPassArguments() const; void dumpPassInfo(Pass *P, enum PassDebuggingString S1, - enum PassDebuggingString S2, const char *Msg); - void dumpAnalysisSetInfo(const char *Msg, Pass *P, - const std::vector &Set) const; + enum PassDebuggingString S2, StringRef Msg); + void dumpRequiredSet(const Pass *P) const; + void dumpPreservedSet(const Pass *P) const; - virtual unsigned getNumContainedPasses() { - return PassVector.size(); + virtual unsigned getNumContainedPasses() const { + return (unsigned)PassVector.size(); } virtual PassManagerType getPassManagerType() const { @@ -300,14 +375,22 @@ protected: PMTopLevelManager *TPM; // Collection of pass that are managed by this manager - std::vector PassVector; + SmallVector PassVector; // Collection of Analysis provided by Parent pass manager and // used by current pass manager. At at time there can not be more // then PMT_Last active pass mangers. std::map *InheritedAnalysis[PMT_Last]; + + /// isPassDebuggingExecutionsOrMore - Return true if -debug-pass=Executions + /// or higher is specified. + bool isPassDebuggingExecutionsOrMore() const; + private: + void dumpAnalysisUsage(StringRef Msg, const Pass *P, + const AnalysisUsage::VectorType &Set) const; + // Set of available Analysis. This information is used while scheduling // pass. If a pass requires an analysis which is not not available then // equired analysis pass is scheduled to run before the pass itself is @@ -316,7 +399,7 @@ private: // Collection of higher level analysis used by the pass managed by // this manager. - std::vector HigherLevelAnalysis; + SmallVector HigherLevelAnalysis; unsigned Depth; }; @@ -334,12 +417,15 @@ class FPPassManager : public ModulePass, public PMDataManager { public: static char ID; explicit FPPassManager(int Depth) - : ModulePass(intptr_t(&ID)), PMDataManager(Depth) { } + : ModulePass(&ID), PMDataManager(Depth) { } /// run - Execute all of the passes scheduled for execution. Keep track of /// whether any of the passes modifies the module, and if so, return true. bool runOnFunction(Function &F); bool runOnModule(Module &M); + + /// cleanup - After running all passes, clean up pass manager cache. + void cleanup(); /// doInitialization - Run all of the initializers for the function passes. /// @@ -372,10 +458,9 @@ public: } }; -} +extern Timer *StartPassTimer(Pass *); +extern void StopPassTimer(Pass *, Timer *); -extern void StartPassTimer(llvm::Pass *); -extern void StopPassTimer(llvm::Pass *); +} #endif -