Expansions for u/srem, using the udiv expansion. More unit tests for udiv and u/srem.

[oota-llvm.git] / include / llvm / Transforms / Utils / IntegerDivision.h

diff --git a/include/llvm/Transforms/Utils/IntegerDivision.h b/include/llvm/Transforms/Utils/IntegerDivision.h
index 8d3f53e6f9040b40c15db56eaead96f8228e24ae..cecc8075de7dec6a1963a506d922e68aa6c9f846 100644 (file)
--- a/include/llvm/Transforms/Utils/IntegerDivision.h
+++ b/include/llvm/Transforms/Utils/IntegerDivision.h
@@ -23,6 +23,16 @@ namespace llvm {
 
 namespace llvm {
 
+  /// Generate code to calculate the remainder of two integers, replacing Rem
+  /// with the generated code. This currently generates code using the udiv
+  /// expansion, but future work includes generating more specialized code,
+  /// e.g. when more information about the operands are known. Currently only
+  /// implements 32bit scalar division (due to udiv's limitation), but future
+  /// work is removing this limitation.
+  ///
+  /// @brief Replace Rem with generated code.
+  bool expandRemainder(BinaryOperator *Rem);
+
   /// 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