/usr/include/llvm-3.9/llvm/CodeGen/PBQPRAConstraint.h is in llvm-3.9-dev 1:3.9.1-19ubuntu1.
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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 61 62 63 64 65 66 67 68 69 | //===-- RegAllocPBQP.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the PBQPBuilder interface, for classes which build PBQP
// instances to represent register allocation problems, and the RegAllocPBQP
// interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_PBQPRACONSTRAINT_H
#define LLVM_CODEGEN_PBQPRACONSTRAINT_H
#include <memory>
#include <vector>
namespace llvm {
namespace PBQP {
namespace RegAlloc {
// Forward declare PBQP graph class.
class PBQPRAGraph;
}
}
class LiveIntervals;
class MachineBlockFrequencyInfo;
class MachineFunction;
class TargetRegisterInfo;
typedef PBQP::RegAlloc::PBQPRAGraph PBQPRAGraph;
/// @brief Abstract base for classes implementing PBQP register allocation
/// constraints (e.g. Spill-costs, interference, coalescing).
class PBQPRAConstraint {
public:
virtual ~PBQPRAConstraint() = 0;
virtual void apply(PBQPRAGraph &G) = 0;
private:
virtual void anchor();
};
/// @brief PBQP register allocation constraint composer.
///
/// Constraints added to this list will be applied, in the order that they are
/// added, to the PBQP graph.
class PBQPRAConstraintList : public PBQPRAConstraint {
public:
void apply(PBQPRAGraph &G) override {
for (auto &C : Constraints)
C->apply(G);
}
void addConstraint(std::unique_ptr<PBQPRAConstraint> C) {
if (C)
Constraints.push_back(std::move(C));
}
private:
std::vector<std::unique_ptr<PBQPRAConstraint>> Constraints;
void anchor() override;
};
}
#endif /* LLVM_CODEGEN_PBQPRACONSTRAINT_H */
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