forked from OSchip/llvm-project
Add "extern template" declarations now that we use explicit instantiation.
This is supported by gcc and clang, but guarded by a macro for MSVC 2008. The extern template declaration is not necessary but generally good form. It can avoid extra instantiations of the template methods defined inline. The EXTERN_TEMPLATE_INSTANTIATION macro could probably be generalized to handle multiple template parameters if someone thinks it's worthwhile. llvm-svn: 158840
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@ -316,6 +316,11 @@ raw_ostream& operator<<(raw_ostream &OS, const LoopBase<BlockT, LoopT> &Loop) {
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return OS;
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}
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// Implementation in LoopInfoImpl.h
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#ifdef __GNUC__
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__extension__ extern template class LoopBase<BasicBlock, Loop>;
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#endif
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class Loop : public LoopBase<BasicBlock, Loop> {
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public:
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Loop() {}
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@ -541,6 +546,11 @@ public:
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void print(raw_ostream &OS) const;
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};
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// Implementation in LoopInfoImpl.h
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#ifdef __GNUC__
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__extension__ extern template class LoopInfoBase<BasicBlock, Loop>;
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#endif
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class LoopInfo : public FunctionPass {
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LoopInfoBase<BasicBlock, Loop> LI;
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friend class LoopBase<BasicBlock, Loop>;
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@ -7,7 +7,7 @@
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the MachineLoopInfo class that is used to identify natural
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// This file defines the MachineLoopInfo class that is used to identify natural
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// loops and determine the loop depth of various nodes of the CFG. Note that
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// natural loops may actually be several loops that share the same header node.
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//
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@ -35,6 +35,12 @@
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namespace llvm {
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// Implementation in LoopInfoImpl.h
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#ifdef __GNUC__
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class MachineLoop;
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__extension__ extern template class LoopBase<MachineBasicBlock, MachineLoop>;
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#endif
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class MachineLoop : public LoopBase<MachineBasicBlock, MachineLoop> {
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public:
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MachineLoop();
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@ -57,6 +63,12 @@ private:
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: LoopBase<MachineBasicBlock, MachineLoop>(MBB) {}
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};
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// Implementation in LoopInfoImpl.h
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#ifdef __GNUC__
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__extension__ extern template
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class LoopInfoBase<MachineBasicBlock, MachineLoop>;
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#endif
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class MachineLoopInfo : public MachineFunctionPass {
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LoopInfoBase<MachineBasicBlock, MachineLoop> LI;
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friend class LoopBase<MachineBasicBlock, MachineLoop>;
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