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

CREDITS.TXT

@@ -56,7 +56,9 @@ D: Loop unrolling with run-time trip counts.
 
 N: Chandler Carruth
 E: [email protected]
-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: [email protected]