Implement a basic cost model for vector and scalar instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166642 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 7 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index 0dbdd25140..19eb941635 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -1958,6 +1958,7 @@ private:
 
   ValueTypeActionImpl ValueTypeActions;
 
+public:
   LegalizeKind
   getTypeConversion(LLVMContext &Context, EVT VT) const {
     // If this is a simple type, use the ComputeRegisterProp mechanism.
@@ -2074,6 +2075,7 @@ private:
     return LegalizeKind(TypeSplitVector, NVT);
   }
 
+private:
   std::vector<std::pair<EVT, const TargetRegisterClass*> > AvailableRegClasses;
 
   /// TargetDAGCombineArray - Targets can specify ISD nodes that they would
diff --git a/include/llvm/Target/TargetTransformImpl.h b/include/llvm/Target/TargetTransformImpl.h
index ec39f9968e..25a7edeb01 100644
--- a/include/llvm/Target/TargetTransformImpl.h
+++ b/include/llvm/Target/TargetTransformImpl.h
@@ -16,6 +16,7 @@
 #define LLVM_TARGET_TARGET_TRANSFORMATION_IMPL_H
 
 #include "llvm/TargetTransformInfo.h"
+#include "llvm/CodeGen/ValueTypes.h"
 
 namespace llvm {
 
@@ -51,6 +52,10 @@ class VectorTargetTransformImpl : public VectorTargetTransformInfo {
 private:
   const TargetLowering *TLI;
 
+  /// Estimate the cost of type-legalization and the legalized type.
+  std::pair<unsigned, EVT>
+  getTypeLegalizationCost(LLVMContext &C, EVT Ty) const;
+
 public:
   explicit VectorTargetTransformImpl(const TargetLowering *TL) : TLI(TL) {}