From 33634d0672fcffc29b49a1ed61f0257382810f7d Mon Sep 17 00:00:00 2001 From: Eric Christopher Date: Tue, 29 Jun 2010 22:22:22 +0000 Subject: [PATCH] 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 --- lib/Target/README.txt | 8 ++++++++ 1 file changed, 8 insertions(+) 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]