[BranchFolding] Set correct mem refs

[oota-llvm.git] / lib / CodeGen / ErlangGC.cpp

diff --git a/lib/CodeGen/ErlangGC.cpp b/lib/CodeGen/ErlangGC.cpp
index e976d7fd9d822768bf602511685a007bdab5f5ec..024946d1436245c02b3168bca766b2eaae67060b 100644 (file)
--- a/lib/CodeGen/ErlangGC.cpp
+++ b/lib/CodeGen/ErlangGC.cpp
@@ -21,61 +21,26 @@
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
 
 using namespace llvm;
 
 namespace {
 
-  class ErlangGC : public GCStrategy {
-    MCSymbol *InsertLabel(MachineBasicBlock &MBB,
-                          MachineBasicBlock::iterator MI,
-                          DebugLoc DL) const;
-  public:
-    ErlangGC();
-    bool findCustomSafePoints(GCFunctionInfo &FI, MachineFunction &MF) override;
-  };
-
+class ErlangGC : public GCStrategy {
+public:
+  ErlangGC();
+};
 }
 
-static GCRegistry::Add<ErlangGC>
-X("erlang", "erlang-compatible garbage collector");
+static GCRegistry::Add<ErlangGC> X("erlang",
+                                   "erlang-compatible garbage collector");
 
-void llvm::linkErlangGC() { }
+void llvm::linkErlangGC() {}
 
 ErlangGC::ErlangGC() {
   InitRoots = false;
   NeededSafePoints = 1 << GC::PostCall;
   UsesMetadata = true;
   CustomRoots = false;
-  CustomSafePoints = true;
-}
-
-MCSymbol *ErlangGC::InsertLabel(MachineBasicBlock &MBB,
-                                MachineBasicBlock::iterator MI,
-                                DebugLoc DL) const {
-  const TargetInstrInfo* TII = MBB.getParent()->getTarget().getInstrInfo();
-  MCSymbol *Label = MBB.getParent()->getContext().CreateTempSymbol();
-  BuildMI(MBB, MI, DL, TII->get(TargetOpcode::GC_LABEL)).addSym(Label);
-  return Label;
-}
-
-bool ErlangGC::findCustomSafePoints(GCFunctionInfo &FI, MachineFunction &MF) {
-  for (MachineFunction::iterator BBI = MF.begin(), BBE = MF.end(); BBI != BBE;
-       ++BBI)
-    for (MachineBasicBlock::iterator MI = BBI->begin(), ME = BBI->end();
-         MI != ME; ++MI)
-
-      if (MI->getDesc().isCall()) {
-
-        // Do not treat tail call sites as safe points.
-        if (MI->getDesc().isTerminator())
-          continue;
-
-        /* Code copied from VisitCallPoint(...) */
-        MachineBasicBlock::iterator RAI = MI; ++RAI;
-        MCSymbol* Label = InsertLabel(*MI->getParent(), RAI, MI->getDebugLoc());
-        FI.addSafePoint(GC::PostCall, Label, MI->getDebugLoc());
-      }
-
-  return false;
 }