ARM / x86_64 varargs: Don't save regparms in prologue without va_start

[oota-llvm.git] / include / llvm / CodeGen / CalcSpillWeights.h

diff --git a/include/llvm/CodeGen/CalcSpillWeights.h b/include/llvm/CodeGen/CalcSpillWeights.h
index 60be6115272e85cb98c9d66d8dad7c66488b85ca..0d79b1d41bdbc5c13289969612314dd4162ce00b 100644 (file)
--- a/include/llvm/CodeGen/CalcSpillWeights.h
+++ b/include/llvm/CodeGen/CalcSpillWeights.h
@@ -43,16 +43,23 @@ namespace llvm {
   /// \brief Calculate auxiliary information for a virtual register such as its
   /// spill weight and allocation hint.
   class VirtRegAuxInfo {
+  public:
+    typedef float (*NormalizingFn)(float, unsigned);
+
+  private:
     MachineFunction &MF;
     LiveIntervals &LIS;
     const MachineLoopInfo &Loops;
     const MachineBlockFrequencyInfo &MBFI;
     DenseMap<unsigned, float> Hint;
+    NormalizingFn normalize;
+
   public:
     VirtRegAuxInfo(MachineFunction &mf, LiveIntervals &lis,
                    const MachineLoopInfo &loops,
-                   const MachineBlockFrequencyInfo &mbfi)
-        : MF(mf), LIS(lis), Loops(loops), MBFI(mbfi) {}
+                   const MachineBlockFrequencyInfo &mbfi,
+                   NormalizingFn norm = normalizeSpillWeight)
+        : MF(mf), LIS(lis), Loops(loops), MBFI(mbfi), normalize(norm) {}
 
     /// \brief (re)compute li's spill weight and allocation hint.
     void calculateSpillWeightAndHint(LiveInterval &li);
@@ -62,7 +69,9 @@ namespace llvm {
   /// live intervals.
   void calculateSpillWeightsAndHints(LiveIntervals &LIS, MachineFunction &MF,
                                      const MachineLoopInfo &MLI,
-                                     const MachineBlockFrequencyInfo &MBFI);
+                                     const MachineBlockFrequencyInfo &MBFI,
+                                     VirtRegAuxInfo::NormalizingFn norm =
+                                         normalizeSpillWeight);
 }
 
 #endif // LLVM_CODEGEN_CALCSPILLWEIGHTS_H