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7c792839af
A loop pass that didn't preserve this entire set of passes wouldn't play well with other loop passes, since these are generally a basic requirement to do any interesting transformations to a loop. Adds a helper to get the set of analyses a loop pass should preserve, and checks that any loop pass we run satisfies the requirement. llvm-svn: 268444
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
//===- LoopPassManager.cpp - Loop pass management -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/LoopPassManager.h"
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#include "llvm/Analysis/BasicAliasAnalysis.h"
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#include "llvm/Analysis/GlobalsModRef.h"
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#include "llvm/Analysis/LoopInfo.h"
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#include "llvm/Analysis/ScalarEvolution.h"
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#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
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#include "llvm/IR/Dominators.h"
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using namespace llvm;
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// Explicit instantiations for core typedef'ed templates.
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namespace llvm {
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template class PassManager<Loop>;
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template class AnalysisManager<Loop>;
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template class InnerAnalysisManagerProxy<LoopAnalysisManager, Function>;
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template class OuterAnalysisManagerProxy<FunctionAnalysisManager, Loop>;
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}
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PreservedAnalyses llvm::getLoopPassPreservedAnalyses() {
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PreservedAnalyses PA;
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PA.preserve<DominatorTreeAnalysis>();
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PA.preserve<LoopAnalysis>();
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PA.preserve<ScalarEvolutionAnalysis>();
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// TODO: What we really want to do here is preserve an AA category, but that
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// concept doesn't exist yet.
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PA.preserve<BasicAA>();
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PA.preserve<GlobalsAA>();
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PA.preserve<SCEVAA>();
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return PA;
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}
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