From 3a2a4846a67c8fa7b604c76d238fddd8b51886fd Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 3 May 2010 14:31:00 +0000
Subject: [PATCH] Add a README entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102906 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/README.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index acf36b84824..144bf5d3e3d 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1835,3 +1835,16 @@ See GCC PR34949
 
 //===---------------------------------------------------------------------===//
 
+In this code:
+
+long foo(long x) {
+  return x > 1 ? x : 1;
+}
+
+LLVM emits a comparison with 1 instead of 0. 0 would be equivalent
+and cheaper on most targets.
+
+LLVM prefers comparisons with zero over non-zero in general, but in this
+case it choses instead to keep the max operation obvious.
+
+//===---------------------------------------------------------------------===//