[PATCH] D83024: [PGO] Instrument function entry BB by default in IR PGO

[Rong Xu via Phabricator via llvm-commits]

xur updated this revision to Diff 278829.
xur added a comment.

Changed the implementation based on review comments.
Now we will not change the version of the index profile.
We will use bit 58 in the profile header to indicate if
we always instrument the entry block. This applies
to both raw and index format.

For the text formation, we add two new directives
:entry_first
:not_entry_first
When omitted, it's the same as :not_entry_first.

Also changed llvm-profdata to dump related information.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83024/new/

https://reviews.llvm.org/D83024

Files:
  clang/test/CodeGenCXX/Inputs/profile-remap.proftext
  clang/test/Profile/Inputs/gcc-flag-compatibility_IR.proftext
  compiler-rt/test/profile/Linux/counter_promo_for.c
  compiler-rt/test/profile/Linux/counter_promo_while.c
  compiler-rt/test/profile/Linux/instrprof-value-merge.c
  compiler-rt/test/profile/infinite_loop.c
  compiler-rt/test/profile/runtime_infinite.c
  llvm/include/llvm/ProfileData/InstrProf.h
  llvm/include/llvm/ProfileData/InstrProfData.inc
  llvm/include/llvm/ProfileData/InstrProfReader.h
  llvm/include/llvm/ProfileData/InstrProfWriter.h
  llvm/lib/ProfileData/InstrProf.cpp
  llvm/lib/ProfileData/InstrProfReader.cpp
  llvm/lib/ProfileData/InstrProfWriter.cpp
  llvm/lib/Transforms/Instrumentation/CFGMST.h
  llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
  llvm/test/Transforms/PGOProfile/Inputs/PR41279.proftext
  llvm/test/Transforms/PGOProfile/Inputs/PR41279_2.proftext
  llvm/test/Transforms/PGOProfile/Inputs/branch2_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/criticaledge_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/func_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/indirectbr_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/irreducible_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/landingpad_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/loop1_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/loop2_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/misexpect-branch_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/misexpect-switch-correct_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/misexpect-switch_entry.proftext
  llvm/test/Transforms/PGOProfile/Inputs/select1.proftext
  llvm/test/Transforms/PGOProfile/Inputs/select2.proftext
  llvm/test/Transforms/PGOProfile/Inputs/switch_entry.proftext
  llvm/test/Transforms/PGOProfile/PR41279.ll
  llvm/test/Transforms/PGOProfile/PR41279_2.ll
  llvm/test/Transforms/PGOProfile/branch2.ll
  llvm/test/Transforms/PGOProfile/counter_promo.ll
  llvm/test/Transforms/PGOProfile/counter_promo_exit_catchswitch.ll
  llvm/test/Transforms/PGOProfile/counter_promo_mexits.ll
  llvm/test/Transforms/PGOProfile/criticaledge.ll
  llvm/test/Transforms/PGOProfile/cspgo_profile_summary.ll
  llvm/test/Transforms/PGOProfile/indirectbr.ll
  llvm/test/Transforms/PGOProfile/irreducible.ll
  llvm/test/Transforms/PGOProfile/landingpad.ll
  llvm/test/Transforms/PGOProfile/loop1.ll
  llvm/test/Transforms/PGOProfile/loop2.ll
  llvm/test/Transforms/PGOProfile/misexpect-branch-stripped.ll
  llvm/test/Transforms/PGOProfile/misexpect-branch.ll
  llvm/test/Transforms/PGOProfile/misexpect-switch-default.ll
  llvm/test/Transforms/PGOProfile/misexpect-switch.ll
  llvm/test/Transforms/PGOProfile/switch.ll
  llvm/test/Transforms/PGOProfile/thinlto_cspgo_use.ll
  llvm/tools/llvm-profdata/llvm-profdata.cpp

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