[all-commits] [llvm/llvm-project] b13b85: [NewPM] Support optnone under new pass manager

[aeubanks via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b13b85818218aa17cee4c987cbf835208c06cf10
      https://github.com/llvm/llvm-project/commit/b13b85818218aa17cee4c987cbf835208c06cf10
  Author: Arthur Eubanks <aeubanks at google.com>
  Date:   2020-07-21 (Tue, 21 Jul 2020)

  Changed paths:
    M clang/lib/CodeGen/BackendUtil.cpp
    M llvm/include/llvm/Passes/StandardInstrumentations.h
    M llvm/lib/LTO/LTOBackend.cpp
    M llvm/lib/Passes/StandardInstrumentations.cpp
    M llvm/test/Feature/optnone-opt.ll
    M llvm/tools/opt/NewPMDriver.cpp

  Log Message:
  -----------
  [NewPM] Support optnone under new pass manager

OptNoneInstrumentation is part of StandardInstrumentations. It skips
functions (or loops) that are marked optnone.

The feature of skipping optional passes for optnone functions under NPM
is gated on a -enable-npm-optnone flag. Currently it is by default
false. That is because we still need to mark all required passes to be
required. Otherwise optnone functions will start having incorrect
semantics.  After that is done in following changes, we can remove the
flag and always enable this.

Reviewed By: ychen

Differential Revision: https://reviews.llvm.org/D83519