From 045f6bf0eff241682320e07326ccc12e5b5617d2 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 24 Mar 2006 19:59:17 +0000
Subject: [PATCH] add a note

llvm-svn: 27076
---
 lib/Target/README.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index c2635dade41..be390961d7c 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -138,3 +138,15 @@ And teach the dag combiner enough to simplify the code expanded before
 legalize.  It seems plausible that this knowledge would let it simplify other
 stuff too.
 
+//===---------------------------------------------------------------------===//
+
+The loop unroller should be enhanced to be able to unroll loops that aren't 
+single basic blocks.  It should be able to handle stuff like this:
+
+  for (i = 0; i < c1; ++i)
+     if (c2 & (1 << i))
+       foo
+
+where c1/c2 are constants.
+
+