[NFC] add more comments for SLSR

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234505 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Transforms/Scalar.h b/include/llvm/Transforms/Scalar.h
index f59b0623950392ab036bc8bdcc7f1334a383bdf0..fe7eaa7af9df8849ab855f55605ff0a56c0c82a6 100644 (file)
--- a/include/llvm/Transforms/Scalar.h
+++ b/include/llvm/Transforms/Scalar.h
@@ -427,6 +427,11 @@ createSeparateConstOffsetFromGEPPass(const TargetMachine *TM = nullptr,
 //
 BasicBlockPass *createLoadCombinePass();
 
+//===----------------------------------------------------------------------===//
+//
+// StraightLineStrengthReduce - This pass strength-reduces some certain
+// instruction patterns in straight-line code.
+//
 FunctionPass *createStraightLineStrengthReducePass();
 
 //===----------------------------------------------------------------------===//