//===- llvm/Transforms/Utils/IntegerDivision.h ------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains an implementation of 32bit integer division for targets
// that don't have native support. It's largely derived from compiler-rt's
// implementation of __udivsi3, but hand-tuned for targets that prefer less
// control flow.
//
//===----------------------------------------------------------------------===//

#ifndef TRANSFORMS_UTILS_INTEGERDIVISION_H
#define TRANSFORMS_UTILS_INTEGERDIVISION_H

namespace llvm {
  class BinaryOperator;
}

namespace llvm {

  /// Generate code to divide two integers, replacing Div with the generated
  /// code. This currently generates code similarly to compiler-rt's
  /// implementations, but future work includes generating more specialized code
  /// when more information about the operands are known. Currently only
  /// implements 32bit scalar division, but future work is removing this
  /// limitation.
  ///
  /// @brief Replace Div with generated code.
  bool expandDivision(BinaryOperator* Div);

} // End llvm namespace

#endif

//===- llvm/Transforms/Utils/IntegerDivision.h ------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains an implementation of 32bit integer division for targets
// that don't have native support. It's largely derived from compiler-rt's
// implementation of __udivsi3, but hand-tuned for targets that prefer less
// control flow.
//
//===----------------------------------------------------------------------===//

#ifndef TRANSFORMS_UTILS_INTEGERDIVISION_H
#define TRANSFORMS_UTILS_INTEGERDIVISION_H

namespace llvm {
  class BinaryOperator;
}

namespace llvm {

  bool expandDivision(BinaryOperator* Div);

} // End llvm namespace

#endif

--- 
+++ 
@@ -23,6 +23,14 @@
 
 namespace llvm {
 
+  /// Generate code to divide two integers, replacing Div with the generated
+  /// code. This currently generates code similarly to compiler-rt's
+  /// implementations, but future work includes generating more specialized code
+  /// when more information about the operands are known. Currently only
+  /// implements 32bit scalar division, but future work is removing this
+  /// limitation.
+  ///
+  /// @brief Replace Div with generated code.
   bool expandDivision(BinaryOperator* Div);
 
 } // End llvm namespace
Document the interface for integer expansion, using doxygen-style comments

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@164231 91177308-0d34-0410-b5e6-96231b3b80d8
