Add timing of the IR parsing code with a new -time-ir-parsing flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177543 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/CMakeLists.txt

@@ -27,6 +27,7 @@ add_llvm_library(LLVMSupport
   IntEqClasses.cpp
   IntervalMap.cpp
   IntrusiveRefCntPtr.cpp
+  IRReader.cpp
   IsInf.cpp
   IsNAN.cpp
   Locale.cpp