From 66e631ace35a4890d84573c41c6debb2c3a4c11c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 7 Jan 2008 21:38:14 +0000
Subject: [PATCH] possible switch lowering improvement.

llvm-svn: 45720
---
 lib/Target/README.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 26bc5e83191..e6178894afe 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -519,3 +519,8 @@ function, they should be sunk into the ones that do.
 In this case, whole-function-isel would also handle this.
 
 //===---------------------------------------------------------------------===//
+
+Investigate lowering of sparse switch statements into perfect hash tables:
+http://burtleburtle.net/bob/hash/perfect.html
+
+//===---------------------------------------------------------------------===//