From 1608df531971fe79d791be027106a26c1f210405 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Fri, 20 Feb 2009 20:29:04 +0000
Subject: [PATCH] Add a comment about how Imm can be used for loop-variant
 values.

llvm-svn: 65147
---
 llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 1edd10e3d8eb..e3f7fbd522f6 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -666,7 +666,8 @@ namespace {
 
     /// Imm - The immediate value that should be added to the base immediately
     /// before Inst, because it will be folded into the imm field of the
-    /// instruction.
+    /// instruction.  This is also sometimes used for loop-variant values that
+    /// must be added inside the loop.
     SCEVHandle Imm;
 
     /// Phi - The induction variable that performs the striding that