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44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
//===-- ColdBlocks.h - Fast/slow path analysis for the SIL CFG -*- C++ -*--===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_SILANALYSIS_COLDBLOCKS_H
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#define SWIFT_SILANALYSIS_COLDBLOCKS_H
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#include "llvm/ADT/DenseMap.h"
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namespace swift {
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class DominanceAnalysis;
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class SILBasicBlock;
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/// Cache a set of basic blocks that have been determined to be cold or hot.
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///
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/// This does not inherit from SILAnalysis because it is not worth preserving
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/// across passes.
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class ColdBlockInfo {
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DominanceAnalysis *DA;
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/// Each block in this map has been determined to be either cold or hot.
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llvm::DenseMap<const SILBasicBlock*, bool> ColdBlockMap;
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// This is a cache and shouldn't be copied around.
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ColdBlockInfo(const ColdBlockInfo &) LLVM_DELETED_FUNCTION;
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ColdBlockInfo &operator=(const ColdBlockInfo &) LLVM_DELETED_FUNCTION;
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public:
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ColdBlockInfo(DominanceAnalysis *DA): DA(DA) {}
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bool isCold(const SILBasicBlock *BB);
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};
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} // end namespace swift
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#endif
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