1 files changed, 12 insertions, 1 deletions
diff --git a/llvm/tools/llvm-exegesis/lib/Target.h b/llvm/tools/llvm-exegesis/lib/Target.h
index 0c574780865..4b0c9d17dd7 100644
--- a/llvm/tools/llvm-exegesis/lib/Target.h
+++ b/llvm/tools/llvm-exegesis/lib/Target.h
@@ -85,11 +85,22 @@ public:
   // Fills memory operands with references to the address at [Reg] + Offset.
   virtual void fillMemoryOperands(InstructionTemplate &IT, unsigned Reg,
                                   unsigned Offset) const {
-
     llvm_unreachable(
         "fillMemoryOperands() requires getScratchMemoryRegister() > 0");
   }
 
+  // Returns a counter usable as a loop counter.
+  virtual unsigned getLoopCounterRegister(const llvm::Triple &) const {
+    return 0;
+  }
+
+  // Adds the code to decrement the loop counter and
+  virtual void decrementLoopCounterAndLoop(MachineBasicBlock &MBB,
+                                           const llvm::MCInstrInfo &MII) const {
+    llvm_unreachable("decrementLoopCounterAndBranch() requires "
+                     "getLoopCounterRegister() > 0");
+  }
+
   // Returns a list of unavailable registers.
   // Targets can use this to prevent some registers to be automatically selected
   // for use in snippets.