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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | //===------ Simplify.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Simplify a SCoP by removing unnecessary statements and accesses.
//
//===----------------------------------------------------------------------===//
#ifndef POLLY_TRANSFORM_SIMPLIFY_H
#define POLLY_TRANSFORM_SIMPLIFY_H
#include "llvm/ADT/SmallVector.h"
namespace llvm {
class PassRegistry;
class Pass;
} // namespace llvm
namespace polly {
class MemoryAccess;
class ScopStmt;
/// Return a vector that contains MemoryAccesses in the order in
/// which they are executed.
///
/// The order is:
/// - Implicit reads (BlockGenerator::generateScalarLoads)
/// - Explicit reads and writes (BlockGenerator::generateArrayLoad,
/// BlockGenerator::generateArrayStore)
/// - In block statements, the accesses are in order in which their
/// instructions are executed.
/// - In region statements, that order of execution is not predictable at
/// compile-time.
/// - Implicit writes (BlockGenerator::generateScalarStores)
/// The order in which implicit writes are executed relative to each other is
/// undefined.
llvm::SmallVector<MemoryAccess *, 32> getAccessesInOrder(ScopStmt &Stmt);
/// Create a Simplify pass
///
/// @param CallNo Disambiguates this instance for when there are multiple
/// instances of this pass in the pass manager. It is used only to
/// keep the statistics apart and has no influence on the
/// simplification itself.
///
/// @return The Simplify pass.
llvm::Pass *createSimplifyPass(int CallNo = 0);
} // namespace polly
namespace llvm {
void initializeSimplifyPass(llvm::PassRegistry &);
} // namespace llvm
#endif /* POLLY_TRANSFORM_SIMPLIFY_H */
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