X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachineRegistry.cpp;h=b5a3a553b3e179c63b9c8954f5abbd0bf7eb3734;hb=f8be5e94aaf70d53dc043f5e541fc0bf6771db22;hp=ecbfc82932b35862d89c54bc0c0e6c0b5a718eaa;hpb=d7099bc608421321c0933120baac7d1032e5fc1c;p=oota-llvm.git

diff --git a/lib/Target/TargetMachineRegistry.cpp b/lib/Target/TargetMachineRegistry.cpp
index ecbfc82932b..b5a3a553b3e 100644
--- a/lib/Target/TargetMachineRegistry.cpp
+++ b/lib/Target/TargetMachineRegistry.cpp
@@ -18,8 +18,34 @@
 #include <algorithm>
 using namespace llvm;
 
+/// List - This is the main list of all of the registered target machines.
 const TargetMachineRegistry::Entry *TargetMachineRegistry::List = 0;
 
+/// Listeners - All of the listeners registered to get notified when new targets
+/// are loaded.
+static TargetRegistrationListener *Listeners = 0;
+
+TargetMachineRegistry::Entry::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;
+  for (TargetRegistrationListener *L = Listeners; L; L = L->getNext())
+    L->targetRegistered(this);
+}
+
+TargetRegistrationListener::TargetRegistrationListener() {
+  Next = Listeners;
+  if (Next) Next->Prev = &Next;
+  Prev = &Listeners;
+  Listeners = this;
+}
+
+TargetRegistrationListener::~TargetRegistrationListener() {
+  *Prev = Next;
+}
+
 /// getClosestStaticTargetForModule - Given an LLVM module, pick the best target
 /// that is compatible with the module.  If no close target can be found, this
 /// returns null and sets the Error string to a reason.