From: Chris Lattner <sabre@nondot.org>
Date: Fri, 24 Mar 2006 19:59:17 +0000 (+0000)
Subject: add a note
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e6cd96d4672242f620b8e97b28d0e120e1293856;p=oota-llvm.git

add a note


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27076 91177308-0d34-0410-b5e6-96231b3b80d8
---

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.
+
+