As the PGPF effort has been turned down, there is no current way to
generate profiles that will be used by these passes. Current efforts are
also focused around inserting prefetches in PLO optimizers, which have a
more accurate view of how the code looks.

Reviewers: arsenm, RKSimon, paperchalice, phoebewang

Reviewed By: arsenm, RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/167911

No tests modified as there are none that explicitly stop at
DynAllocaExpander, and we do not have enough of a pipeline to run those
yet anyways.

Reviewers: phoebewang, RKSimon, paperchalice, arsenm

Reviewed By: arsenm

Pull Request: https://github.com/llvm/llvm-project/pull/167740

There are no tests that specifically stop/start at
x86-partial-reduction, so no test cases have been updated for this
patch.

Reviewers: phoebewang, paperchalice, RKSimon, arsenm

Reviewed By: arsenm, RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/166048

Reviewers: paperchalice, phoebewang, arsenm

Reviewed By: arsenm

Pull Request: https://github.com/llvm/llvm-project/pull/165113

To enable the eventual migration of everything to the NewPM.

Reviewers: RKSimon, phoebewang, paperchalice, arsenm, topperc

Reviewed By: arsenm

Pull Request: https://github.com/llvm/llvm-project/pull/165084

In this commit:
  (1) Added new pass manager support for `ReachingDefAnalysis`.
  (2) Added printer pass.
  (3) Make old pass manager use `ReachingDefInfoWrapperPass`

Just directly check x86_64. isArch64Bit just adds extra
steps around this.