1 files changed, 69 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/CostTable.h b/include/llvm/CodeGen/CostTable.h
new file mode 100644
index 0000000000000..5a6368c5a0f8a
--- /dev/null
+++ b/include/llvm/CodeGen/CostTable.h
@@ -0,0 +1,69 @@
+//===-- CostTable.h - Instruction Cost Table handling -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Cost tables and simple lookup functions
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_COSTTABLE_H_
+#define LLVM_CODEGEN_COSTTABLE_H_
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/MachineValueType.h"
+
+namespace llvm {
+
+/// Cost Table Entry
+struct CostTblEntry {
+  int ISD;
+  MVT::SimpleValueType Type;
+  unsigned Cost;
+};
+
+/// Find in cost table, TypeTy must be comparable to CompareTy by ==
+inline const CostTblEntry *CostTableLookup(ArrayRef<CostTblEntry> Tbl,
+                                           int ISD, MVT Ty) {
+  auto I = find_if(Tbl, [=](const CostTblEntry &Entry) {
+    return ISD == Entry.ISD && Ty == Entry.Type;
+  });
+  if (I != Tbl.end())
+    return I;
+
+  // Could not find an entry.
+  return nullptr;
+}
+
+/// Type Conversion Cost Table
+struct TypeConversionCostTblEntry {
+  int ISD;
+  MVT::SimpleValueType Dst;
+  MVT::SimpleValueType Src;
+  unsigned Cost;
+};
+
+/// Find in type conversion cost table, TypeTy must be comparable to CompareTy
+/// by ==
+inline const TypeConversionCostTblEntry *
+ConvertCostTableLookup(ArrayRef<TypeConversionCostTblEntry> Tbl,
+                       int ISD, MVT Dst, MVT Src) {
+  auto I = find_if(Tbl, [=](const TypeConversionCostTblEntry &Entry) {
+    return ISD == Entry.ISD && Src == Entry.Src && Dst == Entry.Dst;
+  });
+  if (I != Tbl.end())
+    return I;
+
+  // Could not find an entry.
+  return nullptr;
+}
+
+} // namespace llvm
+
+#endif /* LLVM_CODEGEN_COSTTABLE_H_ */