From 6dc95b7b2614794992167a6c7fca2637e2f94009 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 28 Sep 2006 06:01:17 +0000
Subject: [PATCH] add a note about a general improvement to the code generator

llvm-svn: 30642
---
 lib/Target/README.txt | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 48298fae878..e77573e0075 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1,6 +1,20 @@
 Target Independent Opportunities:
 
-===-------------------------------------------------------------------------===
+//===---------------------------------------------------------------------===//
+
+We should make the following changes to clean up MachineInstr:
+
+1. Add an Opcode field to TargetInstrDescriptor, so you can tell the opcode of
+   an instruction with just a TargetInstrDescriptor*.
+2. Remove the Opcode field from MachineInstr, replacing it with a
+   TargetInstrDescriptor*.
+3. Getting information about a machine instr then becomes:
+     MI->getInfo()->isTwoAddress()
+   instead of:
+     const TargetInstrInfo &TII = ...
+     TII.isTwoAddrInstr(MI->getOpcode())
+
+//===---------------------------------------------------------------------===//
 
 FreeBench/mason contains code like this: