Remind us of exit value substitution

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26862 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 2c624c77e9bd93ea7ec6cab6355a400c373ccead..2dd46d29cabe1c78da3c05b0662939991c32b743 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -125,3 +125,6 @@ Can be improved in two ways:
 1. The instcombiner should eliminate the type conversions.
 2. The X86 backend should turn this into a rotate by one bit.
 
+//===---------------------------------------------------------------------===//
+
+Add LSR exit value substitution. It'll probably be a win for Ackermann, etc.