[ConstantRange] Add umin/smin operators

This was split off from http://reviews.llvm.org/D17184.

Reviewed by: Sanjoy

llvm-svn: 262080

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/include/llvm/IR/ConstantRange.h b/llvm/include/llvm/IR/ConstantRange.h
index f2a77765dcf..5038ae13b6a 100644
--- a/llvm/include/llvm/IR/ConstantRange.h
+++ b/llvm/include/llvm/IR/ConstantRange.h
@@ -254,6 +254,14 @@ public:
   ConstantRange umax(const ConstantRange &Other) const;
 
   /// Return a new range representing the possible values resulting
+  /// from a signed minimum of a value in this range and a value in \p Other.
+  ConstantRange smin(const ConstantRange &Other) const;
+
+  /// Return a new range representing the possible values resulting
+  /// from an unsigned minimum of a value in this range and a value in \p Other.
+  ConstantRange umin(const ConstantRange &Other) const;
+
+  /// Return a new range representing the possible values resulting
   /// from an unsigned division of a value in this range and a value in
   /// \p Other.
   ConstantRange udiv(const ConstantRange &Other) const;