Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Analysis/LoopPass.h b/linux-x64/clang/include/llvm/Analysis/LoopPass.h
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+++ b/linux-x64/clang/include/llvm/Analysis/LoopPass.h
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+//===- LoopPass.h - LoopPass class ----------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines LoopPass class. All loop optimization
+// and transformation passes are derived from LoopPass.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_LOOPPASS_H
+#define LLVM_ANALYSIS_LOOPPASS_H
+
+#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/IR/LegacyPassManagers.h"
+#include "llvm/Pass.h"
+#include <deque>
+
+namespace llvm {
+
+class LPPassManager;
+class Function;
+class PMStack;
+
+class LoopPass : public Pass {
+public:
+ explicit LoopPass(char &pid) : Pass(PT_Loop, pid) {}
+
+ /// getPrinterPass - Get a pass to print the function corresponding
+ /// to a Loop.
+ Pass *createPrinterPass(raw_ostream &O,
+ const std::string &Banner) const override;
+
+ // runOnLoop - This method should be implemented by the subclass to perform
+ // whatever action is necessary for the specified Loop.
+ virtual bool runOnLoop(Loop *L, LPPassManager &LPM) = 0;
+
+ using llvm::Pass::doInitialization;
+ using llvm::Pass::doFinalization;
+
+ // Initialization and finalization hooks.
+ virtual bool doInitialization(Loop *L, LPPassManager &LPM) {
+ return false;
+ }
+
+ // Finalization hook does not supply Loop because at this time
+ // loop nest is completely different.
+ virtual bool doFinalization() { return false; }
+
+ // Check if this pass is suitable for the current LPPassManager, if
+ // available. This pass P is not suitable for a LPPassManager if P
+ // is not preserving higher level analysis info used by other
+ // LPPassManager passes. In such case, pop LPPassManager from the
+ // stack. This will force assignPassManager() to create new
+ // LPPassManger as expected.
+ void preparePassManager(PMStack &PMS) override;
+
+ /// Assign pass manager to manage this pass
+ void assignPassManager(PMStack &PMS, PassManagerType PMT) override;
+
+ /// Return what kind of Pass Manager can manage this pass.
+ PassManagerType getPotentialPassManagerType() const override {
+ return PMT_LoopPassManager;
+ }
+
+ //===--------------------------------------------------------------------===//
+ /// SimpleAnalysis - Provides simple interface to update analysis info
+ /// maintained by various passes. Note, if required this interface can
+ /// be extracted into a separate abstract class but it would require
+ /// additional use of multiple inheritance in Pass class hierarchy, something
+ /// we are trying to avoid.
+
+ /// Each loop pass can override these simple analysis hooks to update
+ /// desired analysis information.
+ /// cloneBasicBlockAnalysis - Clone analysis info associated with basic block.
+ virtual void cloneBasicBlockAnalysis(BasicBlock *F, BasicBlock *T, Loop *L) {}
+
+ /// deleteAnalysisValue - Delete analysis info associated with value V.
+ virtual void deleteAnalysisValue(Value *V, Loop *L) {}
+
+ /// Delete analysis info associated with Loop L.
+ /// Called to notify a Pass that a loop has been deleted and any
+ /// associated analysis values can be deleted.
+ virtual void deleteAnalysisLoop(Loop *L) {}
+
+protected:
+ /// Optional passes call this function to check whether the pass should be
+ /// skipped. This is the case when Attribute::OptimizeNone is set or when
+ /// optimization bisect is over the limit.
+ bool skipLoop(const Loop *L) const;
+};
+
+class LPPassManager : public FunctionPass, public PMDataManager {
+public:
+ static char ID;
+ explicit LPPassManager();
+
+ /// 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) override;
+
+ /// Pass Manager itself does not invalidate any analysis info.
+ // LPPassManager needs LoopInfo.
+ void getAnalysisUsage(AnalysisUsage &Info) const override;
+
+ StringRef getPassName() const override { return "Loop Pass Manager"; }
+
+ PMDataManager *getAsPMDataManager() override { return this; }
+ Pass *getAsPass() override { return this; }
+
+ /// Print passes managed by this manager
+ void dumpPassStructure(unsigned Offset) override;
+
+ LoopPass *getContainedPass(unsigned N) {
+ assert(N < PassVector.size() && "Pass number out of range!");
+ LoopPass *LP = static_cast<LoopPass *>(PassVector[N]);
+ return LP;
+ }
+
+ PassManagerType getPassManagerType() const override {
+ return PMT_LoopPassManager;
+ }
+
+public:
+ // Add a new loop into the loop queue.
+ void addLoop(Loop &L);
+
+ // Mark \p L as deleted.
+ void markLoopAsDeleted(Loop &L);
+
+ //===--------------------------------------------------------------------===//
+ /// SimpleAnalysis - Provides simple interface to update analysis info
+ /// maintained by various passes. Note, if required this interface can
+ /// be extracted into a separate abstract class but it would require
+ /// additional use of multiple inheritance in Pass class hierarchy, something
+ /// we are trying to avoid.
+
+ /// cloneBasicBlockSimpleAnalysis - Invoke cloneBasicBlockAnalysis hook for
+ /// all passes that implement simple analysis interface.
+ void cloneBasicBlockSimpleAnalysis(BasicBlock *From, BasicBlock *To, Loop *L);
+
+ /// deleteSimpleAnalysisValue - Invoke deleteAnalysisValue hook for all passes
+ /// that implement simple analysis interface.
+ void deleteSimpleAnalysisValue(Value *V, Loop *L);
+
+ /// Invoke deleteAnalysisLoop hook for all passes that implement simple
+ /// analysis interface.
+ void deleteSimpleAnalysisLoop(Loop *L);
+
+private:
+ std::deque<Loop *> LQ;
+ LoopInfo *LI;
+ Loop *CurrentLoop;
+ bool CurrentLoopDeleted;
+};
+
+// This pass is required by the LCSSA transformation. It is used inside
+// LPPassManager to check if current pass preserves LCSSA form, and if it does
+// pass manager calls lcssa verification for the current loop.
+struct LCSSAVerificationPass : public FunctionPass {
+ static char ID;
+ LCSSAVerificationPass() : FunctionPass(ID) {
+ initializeLCSSAVerificationPassPass(*PassRegistry::getPassRegistry());
+ }
+
+ bool runOnFunction(Function &F) override { return false; }
+
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
+ AU.setPreservesAll();
+ }
+};
+
+} // End llvm namespace
+
+#endif