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Add a new listener class for things that want to be informed about new

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targets that are loaded


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14758 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-11 06:02:59 +00:00
parent 68905bb6fc
commit 2845ece825
1 changed files with 21 additions and 6 deletions
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27
include/llvm/Target/TargetMachineRegistry.h
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@ -58,11 +58,7 @@ namespace llvm {
protected:
Entry(const char *N, const char *SD,
TargetMachine *(*CF)(const Module &, IntrinsicLowering*),
unsigned (*MMF)(const Module &M), unsigned (*JMF)())
: Name(N), ShortDesc(SD), CtorFn(CF), ModuleMatchQualityFn(MMF),
JITMatchQualityFn(JMF), Next(List) {
List = this;
}
unsigned (*MMF)(const Module &M), unsigned (*JMF)());
private:
const Entry *Next; // Next entry in the linked list.
};
@ -89,10 +85,24 @@ namespace llvm {
}
};
/// TargetRegistrationListener - This class allows code to listen for targets
/// that are dynamically registered, and be notified of it when they are.
class TargetRegistrationListener {
TargetRegistrationListener **Prev, *Next;
public:
TargetRegistrationListener();
virtual ~TargetRegistrationListener();
TargetRegistrationListener *getNext() const { return Next; }
virtual void targetRegistered(const TargetMachineRegistry::Entry *E) = 0;
};
//===--------------------------------------------------------------------===//
/// TargetNameParser - This option can be used to provide a command line
/// option to choose among the various registered targets (commonly -march).
class TargetNameParser :
class TargetNameParser : public TargetRegistrationListener,
public cl::parser<const TargetMachineRegistry::Entry*> {
public:
void initialize(cl::Option &O) {
@ -102,6 +112,11 @@ namespace llvm {
std::make_pair(E, E->ShortDesc)));
cl::parser<const TargetMachineRegistry::Entry*>::initialize(O);
}
virtual void targetRegistered(const TargetMachineRegistry::Entry *E) {
Values.push_back(std::make_pair(E->Name,
std::make_pair(E, E->ShortDesc)));
}
};
}