Add convenience functions for creating exact sdiv operators, and

use them in CreatePtrDiff.

llvm-svn: 78682

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/VMCore/Constants.cpp b/llvm/lib/VMCore/Constants.cpp
index 43cb39016f9..2670965f734 100644
--- a/llvm/lib/VMCore/Constants.cpp
+++ b/llvm/lib/VMCore/Constants.cpp
@@ -605,6 +605,12 @@ Constant* ConstantVector::get(Constant* const* Vals, unsigned NumVals) {
   return get(std::vector<Constant*>(Vals, Vals+NumVals));
 }
 
+Constant* ConstantExpr::getExactSDiv(Constant* C1, Constant* C2) {
+  Constant *C = getSDiv(C1, C2);
+  cast<SDivOperator>(C)->setIsExact(true);
+  return C;
+}
+
 // Utility function for determining if a ConstantExpr is a CastOp or not. This
 // can't be inline because we don't want to #include Instruction.h into
 // Constant.h