Subzero : Live Range Splitting after initial Register Allocation

src/IceTargetLowering.h

Index: src/IceTargetLowering.h
diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index 43f5e01f176ba30d489544587932cb499618516e..50853d8a1841570e1674bfa4804e88c5f1981022 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -23,11 +23,12 @@
 #ifndef SUBZERO_SRC_ICETARGETLOWERING_H
 #define SUBZERO_SRC_ICETARGETLOWERING_H
 
-#include "IceDefs.h"
 #include "IceBitVector.h"
 #include "IceCfgNode.h"
+#include "IceDefs.h"
 #include "IceInst.h" // for the names of the Inst subtypes
 #include "IceOperand.h"
+#include "IceRegAlloc.h"
 #include "IceTypes.h"
 
 #include <utility>
@@ -290,6 +291,7 @@ public:
   virtual const SmallBitVector &getAliasesForRegister(RegNumT) const = 0;
 
   void regAlloc(RegAllocKind Kind);
+  void postRegallocSplitting(const SmallBitVector &RegMask);
 
   virtual void
   makeRandomRegisterPermutation(llvm::SmallVectorImpl<RegNumT> &Permutation,
@@ -321,6 +323,12 @@ public:
   virtual void addProlog(CfgNode *Node) = 0;
   virtual void addEpilog(CfgNode *Node) = 0;
 
+  virtual Inst *createLoweredMove(Variable *Dest, Variable *SrcVar) {
+    (void)Dest;
+    (void)SrcVar;
+    llvm_unreachable("unimplemented createLoweredMove");
+  }
+
   virtual ~TargetLowering() = default;
 
 private: