vendor/llvm/llvm-trunk-r321017

1 files changed, 8 insertions, 1 deletions

diff --git a/include/llvm/Analysis/ScalarEvolutionExpander.h b/include/llvm/Analysis/ScalarEvolutionExpander.h
index 7d16f34e54cb..4578e0da8ab2 100644
--- a/include/llvm/Analysis/ScalarEvolutionExpander.h
+++ b/include/llvm/Analysis/ScalarEvolutionExpander.h
@@ -27,9 +27,16 @@ namespace llvm {
   class TargetTransformInfo;
 
   /// Return true if the given expression is safe to expand in the sense that
-  /// all materialized values are safe to speculate.
+  /// all materialized values are safe to speculate anywhere their operands are
+  /// defined.
   bool isSafeToExpand(const SCEV *S, ScalarEvolution &SE);
 
+  /// Return true if the given expression is safe to expand in the sense that
+  /// all materialized values are defined and safe to speculate at the specified
+  /// location and their operands are defined at this location.
+  bool isSafeToExpandAt(const SCEV *S, const Instruction *InsertionPoint,
+                        ScalarEvolution &SE);
+
   /// This class uses information about analyze scalars to rewrite expressions
   /// in canonical form.
   ///