Summary:
Each generated helper can be configured to generate an option that disables
rules in that helper. This can be used to bisect rulesets.

The disable bits are stored in a SparseVector as this is very cheap for the
common case where nothing is disabled. It gets more expensive the more rules
are disabled but you're generally doing that for debug purposes where
performance is less of a concern.

Depends on D68426

Reviewers: volkan, bogner

Reviewed By: volkan

Subscribers: hiraditya, Petar.Avramovic, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68438

llvm-svn: 375067

Teach the combiner helper how to flatten concat_vectors of build_vectors
into a build_vector.

Add this combine as part of AArch64 pre-legalizer combiner.

Differential Revision: https://reviews.llvm.org/D69071

llvm-svn: 375066

* Push timing of overall test time into run module
* Make lit.Run a proper class
* Add a few TODO comments

llvm-svn: 375065

Now that the VFS knows how to deal with virtual working directories, we
can set the current working directory to the one we recorded during
reproducer capture. This ensures that relative paths are resolved
correctly during replay.

llvm-svn: 375064

Implement mangling for CSEs to match regular template-ids.
Reviewed as part of D41569 <https://reviews.llvm.org/D41569>.

Re-commit fixing failing test.

llvm-svn: 375063

As discussed in https://reviews.llvm.org/D68549, the actual issue
here seems to be that the BumpPtrAllocator is growing far too slow
because of the 256 different StringPools used as the backend for ConstString.
At the same time the original patch made ConstString allocate memory in
256MiB slabs for the same reason, meaning that the RSS usage of LLDB increased
by a few hundred MiB for all users without bringing any noticeable speedup
for most of them.

llvm-svn: 375062

Add support for dumping the current working directory with
`reproducer dump -p cwd`.

llvm-svn: 375061

Introduce a helper method named LoadBuffer in the Loader to abstract
reading a reproducer file from disk.

llvm-svn: 375060

This patch extends the reproducer to capture the debugger's current
working directory. This information will be used later to set the
current working directory of the VFS.

llvm-svn: 375059

llvm-svn: 375058

Summary:
This is just moving the existing C++ code around and will be NFC w.r.t
AArch64. Renamed 'CombineBr' to something more descriptive
('ElideByByInvertingCond') at the same time.

The remaining combines in AArch64PreLegalizeCombiner require features that
aren't implemented at this point and will be hoisted as they are added.

Depends on D68424

Reviewers: bogner, volkan

Subscribers: kristof.beyls, hiraditya, Petar.Avramovic, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68426

llvm-svn: 375057

llvm-svn: 375056

Parallelism groups and semaphores are only required for parallel
execution.

llvm-svn: 375055

llvm-svn: 375054

llvm-svn: 375053

This reverts r375051 (git commit a409afaa)

The patch does not work on Windows due to `\` in filenames being interpreted as escaping rather than literal path separators when used by lld linker scripts.

llvm-svn: 375052

Summary: Update GlobPattern in libSupport to handle a few more cases. It does not fully match the `fnmatch` used by GNU objcopy since named character classes (e.g. `[[:digit:]]`) are not supported, but this should support most existing use cases (mostly just `*` is what's used anyway).

This will be used to implement the `--wildcard` flag in llvm-objcopy to be more compatible with GNU objcopy.

This is split off of D66613 to land the libSupport changes separately. The llvm-objcopy part will land soon.

Reviewers: jhenderson, MaskRay, evgeny777, espindola, alexshap

Reviewed By: MaskRay

Subscribers: nickdesaulniers, emaste, arichardson, hiraditya, jakehehrlich, abrachet, seiya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66613

undo objcopy changes to make this libsupport only

llvm-svn: 375051

Summary:
There are two cases where a block is merged into its predecessor and the
MergeBlockIntoPredecessor API is not used. Update the API so it can be
reused in the other cases, in order to avoid code duplication.

Cleanup motivated by D68659.

Reviewers: chandlerc, sanjoy.google, george.burgess.iv

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68670

llvm-svn: 375050

llvm-svn: 375049

llvm-svn: 375048

llvm-svn: 375047

* Remove outdated precautions for Python versions < 2.7
* Remove dead code related to `maxIndividualTestTime` option
* Move printing of test and result summary out of main into its own
  function

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D68847

llvm-svn: 375046

llvm-svn: 375045

After changing dsymutil to use libOption, we lost error reporting for
missing required arguments (input files). Additionally, we stopped
complaining about unknown arguments. This patch fixes both and adds a
test.

llvm-svn: 375044

r374772 changed Offset to be an int64_t but left NewOffset as an int.
Scale is unsigned, so in the calculation `Offset - NewOffset * Scale`,
`NewOffset * Scale` was promoted to unsigned and was then zero-extended
to 64 bits, leading to an incorrect computation which manifested as an
out-of-memory when building the Swift standard library for Android
aarch64. Promote NewOffset to int64_t to fix this, and promote
EmittableOffset as well, since its one user passes it to a function
which takes an int64_t anyway.

Test case based on a suggestion by Sander de Smalen!

Differential Revision: https://reviews.llvm.org/D69018

llvm-svn: 375043

Port directly from SelectionDAG, minus the path using
ISD::SADDSAT/ISD::SSUBSAT.

llvm-svn: 375042

This allows making a couple llvm-symbolizer tests run in all
environments.

Differential Revision: https://reviews.llvm.org/D68133

llvm-svn: 375041

llvm-svn: 375040

llvm-svn: 375039

The problem is that we can have two loop exits, 'a' and 'b', where 'a' and 'b' would exit at the same iteration, 'a' precedes 'b' along some path, and 'b' is predicated while 'a' is not. In this case (see the previously submitted test case), we causing the loop to exit through 'b' whereas it should have exited through 'a'.

This only applies to loop exits where the exit counts are not provably inequal, but that isn't as much of a restriction as it appears. If we could order the exit counts, we'd have already removed one of the two exits. In theory, we might be able to prove inequality w/o ordering, but I didn't really explore that piece. Instead, I went for the obvious restriction and ensured we didn't predicate exits following non-predicateable exits.

Credit goes to Evgeny Brevnov for figuring out the problematic case. Fuzzing probably also found it (failures seen), but due to some silly infrastructure problems I hadn't gotten to the results before Evgeny hand reduced it from a benchmark (he manually enabled the transform). Once this is fixed, I'll try to filter through the fuzzer failures to see if there's anything additional lurking.

Differential Revision https://reviews.llvm.org/D68956

llvm-svn: 375038

Differential Revision: https://reviews.llvm.org/D68134

llvm-svn: 375034

We cannot be sure physregs will stay unchanged.

Differential Revision: https://reviews.llvm.org/D69065

llvm-svn: 375033

that runs on arm64 ISA targets, specifically 
Apple watches.


Differential Revision: https://reviews.llvm.org/D68858

llvm-svn: 375032

Reviewers: bruno, sammccall

Reviewed By: sammccall

Subscribers: jkorous, dexonsmith, arphaman, ributzka, cfe-commits

Differential Revision: https://reviews.llvm.org/D69011

llvm-svn: 375031

We will remove dpp mov along with the physreg def otherwise.

Differential Revision: https://reviews.llvm.org/D69063

llvm-svn: 375030

Summary:
The qfProcessInfo and qsProcessInfo packets currently don't set the processes' arguments, however the platform process list -v command tries to print it.
In this diff I'm adding the arguments as part of the packet, and now the command shows the arguments just like on mac.

On Mac:

507    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/secd
503    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/secinitd
501    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/languageassetd --firstLogin
497    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/trustd --agent
496    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/lsd
494    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /System/Library/Frameworks/CoreTelephony.framework/Support/CommCenter -L
491    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/sbin/distnoted agent
489    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/libexec/UserEventAgent (Aqua)
484    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /usr/sbin/cfprefsd agent
483    1      wallace    1876110778 wallace    1876110778 x86_64-apple-macosx      /System/Library/Frameworks/LocalAuthentication.framework/Support/coreauthd
On android:

1561   1016   root       0                     0          aarch64-unknown-linux-android  /system/bin/ip6tables-restore--noflush -w -v
1805   982    1000       1000                  1000                                      android:drmService
1811   982    10189      10189                 10189                                     com.qualcomm.embms:remote
1999   1      1000       1000                  1000       aarch64-unknown-linux-android  /system/bin/tlc_serverCCM
2332   982    10038      10038                 10038                                     com.android.systemui
2378   983    1053       1053                  1053                                      webview_zygote
2448   982    5013       5013                  5013                                      com.sec.location.nsflp2
2465   982    10027      10027                 10027                                     com.google.android.gms.persistent

Differential Revision:  https://reviews.llvm.org/D68293

llvm-svn: 375029

Summary: Also update the help modifier (h) so that it works as a modifier and not just as a standalone `h`. For example, `llvm-ar h` prints the help message, but `llvm-ar xh` currently prints `unknown option h`.

Reviewers: MaskRay, gbreynoo

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69007

llvm-svn: 375028

Fix the test by not assuming the prefix path of the temp directory can
be matched by a regex.

rdar://problem/56259195

llvm-svn: 375027

The expression of the priority clause must be captured in the combined
task-based directives, like 'parallel master taskloop' directive.

llvm-svn: 375026

The 1st attempt at this modified the cost model in a bad way to avoid the vectorization,
but that caused problems for other users (the loop vectorizer) of the cost model.

I don't see an ideal solution to these 2 related, potentially large, perf regressions:
https://bugs.llvm.org/show_bug.cgi?id=42708
https://bugs.llvm.org/show_bug.cgi?id=43146

We decided that load combining was unsuitable for IR because it could obscure other
optimizations in IR. So we removed the LoadCombiner pass and deferred to the backend.
Therefore, preventing SLP from destroying load combine opportunities requires that it
recognizes patterns that could be combined later, but not do the optimization itself (
it's not a vector combine anyway, so it's probably out-of-scope for SLP).

Here, we add a cost-independent bailout with a conservative pattern match for a
multi-instruction sequence that can probably be reduced later.

In the x86 tests shown (and discussed in more detail in the bug reports), SDAG combining
will produce a single instruction on these tests like:

  movbe   rax, qword ptr [rdi]

or:

  mov     rax, qword ptr [rdi]

Not some (half) vector monstrosity as we currently do using SLP:

  vpmovzxbq       ymm0, dword ptr [rdi + 1] # ymm0 = mem[0],zero,zero,..
  vpsllvq ymm0, ymm0, ymmword ptr [rip + .LCPI0_0]
  movzx   eax, byte ptr [rdi]
  movzx   ecx, byte ptr [rdi + 5]
  shl     rcx, 40
  movzx   edx, byte ptr [rdi + 6]
  shl     rdx, 48
  or      rdx, rcx
  movzx   ecx, byte ptr [rdi + 7]
  shl     rcx, 56
  or      rcx, rdx
  or      rcx, rax
  vextracti128    xmm1, ymm0, 1
  vpor    xmm0, xmm0, xmm1
  vpshufd xmm1, xmm0, 78          # xmm1 = xmm0[2,3,0,1]
  vpor    xmm0, xmm0, xmm1
  vmovq   rax, xmm0
  or      rax, rcx
  vzeroupper
  ret

Differential Revision: https://reviews.llvm.org/D67841

llvm-svn: 375025