llvm-project.git/llvm/lib/Analysis/IntervalPartition.cpp, branch users/nico/python-2

Remove the unused IntervalPartition analysis pass (#88133)

2024-04-09T18:12:26+00:00

This removes the old legacy PM "intervals" analysis pass (aka
IntervalPartition). It also removes the associated Interval and
IntervalIterator help classes.

Reasons for removal:
1) The pass is not used by llvm-project (not even being tested by
   any regression tests).
2) Pass has not been ported to new pass manager, which at least
   indicates that it isn't used by the middle-end.
3) ASan reports heap-use-after-free on
      ++I;  // After the first one...
   even if false is passed to intervals_begin. Not sure if that is
   a false positive, but it makes the code a bit less trustworthy.

[llvm] Use range-based for loops (NFC)

2021-11-21T02:42:10+00:00

Sink all InitializePasses.h includes

2019-11-14T00:34:37+00:00

This file lists every pass in LLVM, and is included by Pass.h, which is
very popular. Every time we add, remove, or rename a pass in LLVM, it
caused lots of recompilation.

I found this fact by looking at this table, which is sorted by the
number of times a file was changed over the last 100,000 git commits
multiplied by the number of object files that depend on it in the
current checkout:
  recompiles    touches affected_files  header
  342380        95      3604    llvm/include/llvm/ADT/STLExtras.h
  314730        234     1345    llvm/include/llvm/InitializePasses.h
  307036        118     2602    llvm/include/llvm/ADT/APInt.h
  213049        59      3611    llvm/include/llvm/Support/MathExtras.h
  170422        47      3626    llvm/include/llvm/Support/Compiler.h
  162225        45      3605    llvm/include/llvm/ADT/Optional.h
  158319        63      2513    llvm/include/llvm/ADT/Triple.h
  140322        39      3598    llvm/include/llvm/ADT/StringRef.h
  137647        59      2333    llvm/include/llvm/Support/Error.h
  131619        73      1803    llvm/include/llvm/Support/FileSystem.h

Before this change, touching InitializePasses.h would cause 1345 files
to recompile. After this change, touching it only causes 550 compiles in
an incremental rebuild.

Reviewers: bkramer, asbirlea, bollu, jdoerfert

Differential Revision: https://reviews.llvm.org/D70211

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19T08:50:56+00:00

to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

[Analysis] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).

2017-07-24T23:16:33+00:00

llvm-svn: 308936

Apply clang-tidy's modernize-loop-convert to lib/Analysis.

2016-06-26T17:27:42+00:00

Only minor manual fixes. No functionality change intended.

llvm-svn: 273816

[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

2014-04-15T04:59:12+00:00

llvm-svn: 206243

Now with fewer extraneous semicolons!

2010-10-07T22:25:06+00:00

llvm-svn: 115996

Reapply r110396, with fixes to appease the Linux buildbot gods.

2010-08-06T18:33:48+00:00

llvm-svn: 110460

Revert r110396 to fix buildbots.

2010-08-06T00:23:35+00:00

llvm-svn: 110410