diff --git a/include/llvm/Analysis/CodeMetrics.h b/include/llvm/Analysis/CodeMetrics.h
index f14718f..f6ce2cd 100644
--- a/include/llvm/Analysis/CodeMetrics.h
+++ b/include/llvm/Analysis/CodeMetrics.h
@@ -28,14 +28,6 @@
 class TargetTransformInfo;
 class Value;
 
-/// Check whether a call will lower to something small.
-///
-/// This tests checks whether this callsite will lower to something
-/// significantly cheaper than a traditional call, often a single
-/// instruction. Note that if isInstructionFree(CS.getInstruction()) would
-/// return true, so will this function.
-bool callIsSmall(ImmutableCallSite CS);
-
 /// Utility to calculate the size and a few similar metrics for a set
 /// of basic blocks.
 struct CodeMetrics {