Update woefully stale credits entry. Everything listed there had been
re-done by wiser souls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154894 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CREDITS.TXT b/CREDITS.TXT
index 6c042d5..bf32a4c 100644
--- a/CREDITS.TXT
+++ b/CREDITS.TXT
@@ -56,7 +56,9 @@
 
 N: Chandler Carruth
 E: chandlerc@gmail.com
-D: LinkTimeOptimizer for Linux, via binutils integration, and C API
+D: Hashing algorithms and interfaces
+D: Inline cost analysis
+D: Machine block placement pass
 
 N: Casey Carter
 E: ccarter@uiuc.edu