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diff --git a/gnu/llvm/tools/clang/lib/CodeGen/CGLoopInfo.h b/gnu/llvm/tools/clang/lib/CodeGen/CGLoopInfo.h
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-//===---- CGLoopInfo.h - LLVM CodeGen for loop metadata -*- C++ -*---------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This is the internal state used for llvm translation for loop statement
-// metadata.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_LIB_CODEGEN_CGLOOPINFO_H
-#define LLVM_CLANG_LIB_CODEGEN_CGLOOPINFO_H
-
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/IR/DebugLoc.h"
-#include "llvm/IR/Value.h"
-#include "llvm/Support/Compiler.h"
-
-namespace llvm {
-class BasicBlock;
-class Instruction;
-class MDNode;
-} // end namespace llvm
-
-namespace clang {
-class Attr;
-class ASTContext;
-namespace CodeGen {
-
-/// Attributes that may be specified on loops.
-struct LoopAttributes {
- explicit LoopAttributes(bool IsParallel = false);
- void clear();
-
- /// Generate llvm.loop.parallel metadata for loads and stores.
- bool IsParallel;
-
- /// State of loop vectorization or unrolling.
- enum LVEnableState { Unspecified, Enable, Disable, Full };
-
- /// Value for llvm.loop.vectorize.enable metadata.
- LVEnableState VectorizeEnable;
-
- /// Value for llvm.loop.unroll.* metadata (enable, disable, or full).
- LVEnableState UnrollEnable;
-
- /// Value for llvm.loop.unroll_and_jam.* metadata (enable, disable, or full).
- LVEnableState UnrollAndJamEnable;
-
- /// Value for llvm.loop.vectorize.width metadata.
- unsigned VectorizeWidth;
-
- /// Value for llvm.loop.interleave.count metadata.
- unsigned InterleaveCount;
-
- /// llvm.unroll.
- unsigned UnrollCount;
-
- /// llvm.unroll.
- unsigned UnrollAndJamCount;
-
- /// Value for llvm.loop.distribute.enable metadata.
- LVEnableState DistributeEnable;
-
- /// Value for llvm.loop.pipeline.disable metadata.
- bool PipelineDisabled;
-
- /// Value for llvm.loop.pipeline.iicount metadata.
- unsigned PipelineInitiationInterval;
-};
-
-/// Information used when generating a structured loop.
-class LoopInfo {
-public:
- /// Construct a new LoopInfo for the loop with entry Header.
- LoopInfo(llvm::BasicBlock *Header, const LoopAttributes &Attrs,
- const llvm::DebugLoc &StartLoc, const llvm::DebugLoc &EndLoc);
-
- /// Get the loop id metadata for this loop.
- llvm::MDNode *getLoopID() const { return LoopID; }
-
- /// Get the header block of this loop.
- llvm::BasicBlock *getHeader() const { return Header; }
-
- /// Get the set of attributes active for this loop.
- const LoopAttributes &getAttributes() const { return Attrs; }
-
- /// Return this loop's access group or nullptr if it does not have one.
- llvm::MDNode *getAccessGroup() const { return AccGroup; }
-
-private:
- /// Loop ID metadata.
- llvm::MDNode *LoopID;
- /// Header block of this loop.
- llvm::BasicBlock *Header;
- /// The attributes for this loop.
- LoopAttributes Attrs;
- /// The access group for memory accesses parallel to this loop.
- llvm::MDNode *AccGroup = nullptr;
-};
-
-/// A stack of loop information corresponding to loop nesting levels.
-/// This stack can be used to prepare attributes which are applied when a loop
-/// is emitted.
-class LoopInfoStack {
- LoopInfoStack(const LoopInfoStack &) = delete;
- void operator=(const LoopInfoStack &) = delete;
-
-public:
- LoopInfoStack() {}
-
- /// Begin a new structured loop. The set of staged attributes will be
- /// applied to the loop and then cleared.
- void push(llvm::BasicBlock *Header, const llvm::DebugLoc &StartLoc,
- const llvm::DebugLoc &EndLoc);
-
- /// Begin a new structured loop. Stage attributes from the Attrs list.
- /// The staged attributes are applied to the loop and then cleared.
- void push(llvm::BasicBlock *Header, clang::ASTContext &Ctx,
- llvm::ArrayRef<const Attr *> Attrs, const llvm::DebugLoc &StartLoc,
- const llvm::DebugLoc &EndLoc);
-
- /// End the current loop.
- void pop();
-
- /// Return the top loop id metadata.
- llvm::MDNode *getCurLoopID() const { return getInfo().getLoopID(); }
-
- /// Return true if the top loop is parallel.
- bool getCurLoopParallel() const {
- return hasInfo() ? getInfo().getAttributes().IsParallel : false;
- }
-
- /// Function called by the CodeGenFunction when an instruction is
- /// created.
- void InsertHelper(llvm::Instruction *I) const;
-
- /// Set the next pushed loop as parallel.
- void setParallel(bool Enable = true) { StagedAttrs.IsParallel = Enable; }
-
- /// Set the next pushed loop 'vectorize.enable'
- void setVectorizeEnable(bool Enable = true) {
- StagedAttrs.VectorizeEnable =
- Enable ? LoopAttributes::Enable : LoopAttributes::Disable;
- }
-
- /// Set the next pushed loop as a distribution candidate.
- void setDistributeState(bool Enable = true) {
- StagedAttrs.DistributeEnable =
- Enable ? LoopAttributes::Enable : LoopAttributes::Disable;
- }
-
- /// Set the next pushed loop unroll state.
- void setUnrollState(const LoopAttributes::LVEnableState &State) {
- StagedAttrs.UnrollEnable = State;
- }
-
- /// Set the next pushed loop unroll_and_jam state.
- void setUnrollAndJamState(const LoopAttributes::LVEnableState &State) {
- StagedAttrs.UnrollAndJamEnable = State;
- }
-
- /// Set the vectorize width for the next loop pushed.
- void setVectorizeWidth(unsigned W) { StagedAttrs.VectorizeWidth = W; }
-
- /// Set the interleave count for the next loop pushed.
- void setInterleaveCount(unsigned C) { StagedAttrs.InterleaveCount = C; }
-
- /// Set the unroll count for the next loop pushed.
- void setUnrollCount(unsigned C) { StagedAttrs.UnrollCount = C; }
-
- /// \brief Set the unroll count for the next loop pushed.
- void setUnrollAndJamCount(unsigned C) { StagedAttrs.UnrollAndJamCount = C; }
-
- /// Set the pipeline disabled state.
- void setPipelineDisabled(bool S) { StagedAttrs.PipelineDisabled = S; }
-
- /// Set the pipeline initiation interval.
- void setPipelineInitiationInterval(unsigned C) {
- StagedAttrs.PipelineInitiationInterval = C;
- }
-
-private:
- /// Returns true if there is LoopInfo on the stack.
- bool hasInfo() const { return !Active.empty(); }
- /// Return the LoopInfo for the current loop. HasInfo should be called
- /// first to ensure LoopInfo is present.
- const LoopInfo &getInfo() const { return Active.back(); }
- /// The set of attributes that will be applied to the next pushed loop.
- LoopAttributes StagedAttrs;
- /// Stack of active loops.
- llvm::SmallVector<LoopInfo, 4> Active;
-};
-
-} // end namespace CodeGen
-} // end namespace clang
-
-#endif