[llvm-commits] CVS: llvm/lib/Target/README.txt

[Chris Lattner]

Changes in directory llvm/lib/Target:

README.txt updated: 1.50 -> 1.51
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Log message:

add a note


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Diffs of the changes:  (+10 -0)

 README.txt |   10 ++++++++++
 1 files changed, 10 insertions(+)


Index: llvm/lib/Target/README.txt
diff -u llvm/lib/Target/README.txt:1.50 llvm/lib/Target/README.txt:1.51
--- llvm/lib/Target/README.txt:1.50	Wed Nov 29 01:21:46 2006
+++ llvm/lib/Target/README.txt	Thu Dec  7 20:01:32 2006
@@ -303,6 +303,16 @@
   return v;
 }
 
+Nor is this (yes, it really is bswap):
+
+unsigned long reverse(unsigned v) {
+    unsigned t;
+    t = v ^ ((v << 16) | (v >> 16));
+    t &= ~0xff0000;
+    v = (v << 24) | (v >> 8);
+    return v ^ (t >> 8);
+}
+
 //===---------------------------------------------------------------------===//
 
 These should turn into single 16-bit (unaligned?) loads on little/big endian