This patch adds the instrumentation for indirect call value profiling. It finds all the indirect call-sites and generates instrprof_value_profile intrinsic calls. A new opt level option -disable-vp is introduced to disable this instrumentation.
Reviewers: davidxl, betulb, vsk
Differential Revision: http://reviews.llvm.org/D16016
llvm-svn: 258417
Rong Xu