Remove unneeded #include.

[oota-llvm.git] / include / llvm / Analysis / TargetTransformInfo.h

diff --git a/include/llvm/Analysis/TargetTransformInfo.h b/include/llvm/Analysis/TargetTransformInfo.h
index 7a1c5cb391b4ed096ce12b11d2f8dc566743d846..eb29e3483d831077cc56e1c4e650ee853df12b70 100644 (file)
--- a/include/llvm/Analysis/TargetTransformInfo.h
+++ b/include/llvm/Analysis/TargetTransformInfo.h
@@ -22,15 +22,17 @@
 #ifndef LLVM_ANALYSIS_TARGETTRANSFORMINFO_H
 #define LLVM_ANALYSIS_TARGETTRANSFORMINFO_H
 
-#include "llvm/CodeGen/ValueTypes.h"
-#include "llvm/IR/GlobalValue.h"
 #include "llvm/IR/Intrinsics.h"
-#include "llvm/IR/Type.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/DataTypes.h"
 
 namespace llvm {
 
+class GlobalValue;
+class Type;
+class User;
+class Value;
+
 /// TargetTransformInfo - This pass provides access to the codegen
 /// interfaces that are needed for IR-level transformations.
 class TargetTransformInfo {
@@ -223,6 +225,16 @@ public:
                                      int64_t BaseOffset, bool HasBaseReg,
                                      int64_t Scale) const;
 
+  /// \brief Return the cost of the scaling factor used in the addressing
+  /// mode represented by AM for this target, for a load/store
+  /// of the specified type.
+  /// If the AM is supported, the return value must be >= 0.
+  /// If the AM is not supported, it returns a negative value.
+  /// TODO: Handle pre/postinc as well.
+  virtual int getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
+                                   int64_t BaseOffset, bool HasBaseReg,
+                                   int64_t Scale) const;
+
   /// isTruncateFree - Return true if it's free to truncate a value of
   /// type Ty1 to type Ty2. e.g. On x86 it's free to truncate a i32 value in
   /// register EAX to i16 by referencing its sub-register AX.
@@ -261,6 +273,13 @@ public:
     SK_ExtractSubvector ///< ExtractSubvector Index indicates start offset.
   };
 
+  /// \brief Additonal information about an operand's possible values.
+  enum OperandValueKind {
+    OK_AnyValue,            // Operand can have any value.
+    OK_UniformValue,        // Operand is uniform (splat of a value).
+    OK_UniformConstantValue // Operand is uniform constant.
+  };
+
   /// \return The number of scalar or vector registers that the target has.
   /// If 'Vectors' is true, it returns the number of vector registers. If it is
   /// set to false, it returns the number of scalar registers.
@@ -275,7 +294,9 @@ public:
   virtual unsigned getMaximumUnrollFactor() const;
 
   /// \return The expected cost of arithmetic ops, such as mul, xor, fsub, etc.
-  virtual unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty) const;
+  virtual unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty,
+                                  OperandValueKind Opd1Info = OK_AnyValue,
+                                  OperandValueKind Opd2Info = OK_AnyValue) const;
 
   /// \return The cost of a shuffle instruction of kind Kind and of type Tp.
   /// The index and subtype parameters are used by the subvector insertion and