Function temporaries can not overlap with retval or args.See the comment in source...

[oota-llvm.git] / lib / Target / TargetMachineRegistry.cpp

diff --git a/lib/Target/TargetMachineRegistry.cpp b/lib/Target/TargetMachineRegistry.cpp
index 5be9eb1bb3f1bc63e600086fc86e977ad6b1b9a6..c1a4777c63140304bbc2b412e877d967697e5b2f 100644 (file)
--- a/lib/Target/TargetMachineRegistry.cpp
+++ b/lib/Target/TargetMachineRegistry.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -18,44 +18,16 @@
 #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 &,const std::string &),
-                           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.
-const TargetMachineRegistry::Entry *
+const TargetMachineRegistry::entry *
 TargetMachineRegistry::getClosestStaticTargetForModule(const Module &M,
                                                        std::string &Error) {
-  std::vector<std::pair<unsigned, const Entry *> > UsableTargets;
-  for (const Entry *E = getList(); E; E = E->getNext())
-    if (unsigned Qual = E->ModuleMatchQualityFn(M))
-      UsableTargets.push_back(std::make_pair(Qual, E));
+  std::vector<std::pair<unsigned, const entry *> > UsableTargets;
+  for (Registry<TargetMachine>::iterator I = begin(), E = end(); I != E; ++I)
+    if (unsigned Qual = I->ModuleMatchQualityFn(M))
+      UsableTargets.push_back(std::make_pair(Qual, &*I));
 
   if (UsableTargets.empty()) {
     Error = "No available targets are compatible with this module";
@@ -63,7 +35,7 @@ TargetMachineRegistry::getClosestStaticTargetForModule(const Module &M,
   } else if (UsableTargets.size() == 1)
     return UsableTargets.back().second;
 
-  // Otherwise, take the best target, but make sure we don't have to equally
+  // Otherwise, take the best target, but make sure we don't have two equally
   // good best targets.
   std::sort(UsableTargets.begin(), UsableTargets.end());
   if (UsableTargets.back().first ==UsableTargets[UsableTargets.size()-2].first){
@@ -78,12 +50,12 @@ TargetMachineRegistry::getClosestStaticTargetForModule(const Module &M,
 /// getClosestTargetForJIT - Pick the best target that is compatible with
 /// the current host.  If no close target can be found, this returns null
 /// and sets the Error string to a reason.
-const TargetMachineRegistry::Entry *
+const TargetMachineRegistry::entry *
 TargetMachineRegistry::getClosestTargetForJIT(std::string &Error) {
-  std::vector<std::pair<unsigned, const Entry *> > UsableTargets;
-  for (const Entry *E = getList(); E; E = E->getNext())
-    if (unsigned Qual = E->JITMatchQualityFn())
-      UsableTargets.push_back(std::make_pair(Qual, E));
+  std::vector<std::pair<unsigned, const entry *> > UsableTargets;
+  for (Registry<TargetMachine>::iterator I = begin(), E = end(); I != E; ++I)
+    if (unsigned Qual = I->JITMatchQualityFn())
+      UsableTargets.push_back(std::make_pair(Qual, &*I));
 
   if (UsableTargets.empty()) {
     Error = "No JIT is available for this host";
@@ -93,7 +65,7 @@ TargetMachineRegistry::getClosestTargetForJIT(std::string &Error) {
 
   // Otherwise, take the best target.  If there is a tie, just pick one.
   unsigned MaxQual = UsableTargets.front().first;
-  const Entry *MaxQualTarget = UsableTargets.front().second;
+  const entry *MaxQualTarget = UsableTargets.front().second;
 
   for (unsigned i = 1, e = UsableTargets.size(); i != e; ++i)
     if (UsableTargets[i].first > MaxQual) {