From: Eric Christopher <echristo@apple.com>
Date: Tue, 29 Jun 2010 22:22:22 +0000 (+0000)
Subject: Add another bswap idiom that isn't matched.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=33634d0672fcffc29b49a1ed61f0257382810f7d;p=oota-llvm.git

Add another bswap idiom that isn't matched.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107213 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index efb91a1b283..b1080b594ff 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -300,6 +300,14 @@ unsigned long reverse(unsigned v) {
     return v ^ (t >> 8);
 }
 
+Neither is this (very standard idiom):
+
+int f(int n)
+{
+  return (((n) << 24) | (((n) & 0xff00) << 8) 
+       | (((n) >> 8) & 0xff00) | ((n) >> 24));
+}
+
 //===---------------------------------------------------------------------===//
 
 [LOOP RECOGNITION]