update a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25918 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt
index 468d974a278fe71c27237ab8a3b58394fd64b4ff..7afcc7471af7d90baa7c6bbb24412790f46f5e48 100644 (file)
--- a/lib/Target/PowerPC/README.txt
+++ b/lib/Target/PowerPC/README.txt
@@ -86,6 +86,9 @@ It would be better to materialize .CPI_X into a register, then use immediates
 off of the register to avoid the lis's.  This is even more important in PIC 
 mode.
 
+Note that this (and the static variable version) is discussed here for GCC:
+http://gcc.gnu.org/ml/gcc-patches/2006-02/msg00133.html
+
 ===-------------------------------------------------------------------------===
 
 Implement Newton-Rhapson method for improving estimate instructions to the