Loop Profiling

lib/LoopProf

• LoopProfiling.cpp
  • treat call site and loop similarly
  • add loopProf_invocation at the beginning of a loop/ before a callsite
  • add loop_exit in all exit blocks of a loop / after a callsite
  • test if it's a LLVM intrinsic function
  • Go through and instrument each loop and its subloops
• LoopProfLoad.cpp
• TargetLoopHierarchy.cpp
• Targets.cpp

support/FullLoopProf

• FullLoopProf.cpp: Actual loop profiling runtime
  • initialization at the beginning
  • keep track of call stack