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Add support for passes to announce that they only depend on the CFG of a
function. This is crude but effective git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2505 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -219,6 +219,15 @@ public:
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return AnalysisID(NextID++, CreatePass<AnalysisType>);
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}
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// Special Copy Constructor - This is how analysis passes declare that they
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// only depend on the CFG of the function they are working on, so they are not
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// invalidated by other passes that do not modify the CFG. This should be
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// used like this:
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// AnalysisID DominatorSet::ID(AnalysisID::create<DominatorSet>(), true);
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//
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AnalysisID(const AnalysisID &AID, bool DependsOnlyOnCFG = false);
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inline Pass *createPass() const { return Constructor(*this); }
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inline bool operator==(const AnalysisID &A) const {
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