mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
//===-------------- LoopAnalysis.h - SIL Loop Analysis -*- C++ -*----------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See http://swift.org/LICENSE.txt for license information
|
|
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SWIFT_SILANALYSIS_LOOPINFOANALYSIS_H
|
|
#define SWIFT_SILANALYSIS_LOOPINFOANALYSIS_H
|
|
|
|
#include "swift/SIL/CFG.h"
|
|
#include "swift/SIL/LoopInfo.h"
|
|
#include "swift/SIL/SILBasicBlock.h"
|
|
#include "swift/SILAnalysis/Analysis.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
|
|
namespace swift {
|
|
class DominanceInfo;
|
|
class SILLoop;
|
|
class SILPassManager;
|
|
}
|
|
|
|
namespace swift {
|
|
|
|
/// Computes natural loop information for SIL basic blocks.
|
|
class SILLoopAnalysis : public SILAnalysis {
|
|
using LoopInfoMap = llvm::DenseMap<SILFunction *, SILLoopInfo *>;
|
|
|
|
LoopInfoMap LoopInfos;
|
|
SILPassManager *PM;
|
|
public:
|
|
SILLoopAnalysis(SILModule *, SILPassManager *PM)
|
|
: SILAnalysis(AnalysisKind::LoopInfo), PM(PM) {}
|
|
|
|
virtual ~SILLoopAnalysis() {
|
|
for (auto LI : LoopInfos)
|
|
delete LI.second;
|
|
}
|
|
|
|
static bool classof(const SILAnalysis *S) {
|
|
return S->getKind() == AnalysisKind::LoopInfo;
|
|
}
|
|
|
|
virtual void invalidate(SILAnalysis::PreserveKind K) {
|
|
if (K & PreserveKind::Branches) return;
|
|
|
|
for (auto LI : LoopInfos)
|
|
delete LI.second;
|
|
|
|
// Clear the maps.
|
|
LoopInfos.clear();
|
|
}
|
|
|
|
virtual void invalidate(SILFunction* F, SILAnalysis::PreserveKind K) {
|
|
if (K & PreserveKind::Branches) return;
|
|
|
|
if (LoopInfos.count(F)) {
|
|
delete LoopInfos[F];
|
|
LoopInfos.erase(F);
|
|
}
|
|
|
|
}
|
|
|
|
// Computes loop information for the function using dominance information or
|
|
// returns a cached result if available.
|
|
SILLoopInfo *getLoopInfo(SILFunction *F);
|
|
|
|
};
|
|
|
|
} // end namespace swift
|
|
|
|
#endif
|