add a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99815 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt
index 57b65cf15d02da95c758a558b849f4c3d84d2610..85d5ca05913cb6b05b743beb66b483005dee3707 100644 (file)
--- a/lib/Target/ARM/README.txt
+++ b/lib/Target/ARM/README.txt
@@ -12,6 +12,9 @@ Reimplement 'select' in terms of 'SEL'.
 
 A few ARMv6T2 ops should be pattern matched: BFI, SBFX, and UBFX
 
+Interesting optimization for PIC codegen on arm-linux:
+http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43129
+
 //===---------------------------------------------------------------------===//
 
 Crazy idea:  Consider code that uses lots of 8-bit or 16-bit values.  By the