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* Remove outdated precautions for Python versions 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

Summary: Move the copy of six.py, lldb.py and macosx/heap

Reviewers: labath

Subscribers: mgorny, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D69016

llvm-svn: 375024

llvm-svn: 375023

Differential Revision: https://reviews.llvm.org/D68808

llvm-svn: 375022

The name of ControlSections is not expressive enough to convey what they really are.
CsectGroup can better communicate the concept of grouping csects together since they have similar property.

Reviewer: daltenty

Differential Revision: https://reviews.llvm.org/D69001

llvm-svn: 375021

Using GNU diff, `--strip-trailing-cr` removes a `\r` appearing before
a `\n` at the end of a line.  Without this patch, lit's internal diff
only removes `\r` if it appears as the last character.  That seems
useless.  This patch fixes that.

This patch also adds `--strip-trailing-cr` to some tests that fail on
Windows bots when D68664 is applied.  Based on what I see in the bot
logs, I think the following is happening.  In each test there, lit
diff is comparing a file with `\r\n` line endings to a file with `\n`
line endings.  Without D68664, lit diff reads those files in text
mode, which in Windows causes `\r\n` to be replaced with `\n`.
However, with D68664, lit diff reads the files in binary mode instead
and thus reports that every line is different, just as GNU diff does
(at least under Ubuntu).  Adding `--strip-trailing-cr` to those tests
restores the previous behavior while permitting the behavior of lit
diff to be more like GNU diff.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D68839

llvm-svn: 375020

Copy the NewAlignment value to Alignment first and then use that to update the stack frame object alignments.

llvm-svn: 375019

As suggested by rnk at D67643#1673043, instead of reading files
multiple times until an appropriate encoding is found, read them once
as binary, and then try to decode what was read.

For Python >= 3.5, don't fail when attempting to decode the
`diff_bytes` output in order to print it.

Avoid failures for Python 2.7 used on some Windows bots by
transforming diff output with `lit.util.to_string` before writing it
to stdout.

Finally, add some tests for encoding handling.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D68664

llvm-svn: 375018

When the parallel region is called directly in the sequential region,
the zeroed tid/bound id are used. But they must point to the different
memory locations as the parameters are marked as noalias.

llvm-svn: 375017

Do not generate non-existing sdwa instructions. It reduces the
number of generated instructions by 185.

Differential Revision: https://reviews.llvm.org/D69010

llvm-svn: 375016

http://lab.llvm.org:8011/builders/clang-ppc64be-linux-lnt/builds/31902/steps/ninja%20check%201/logs/stdio

llvm-svn: 375015

http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/39536/steps/ninja%20check%201/logs/FAIL%3A%20LLVM-Unit%3A%3AYAMLRemarks.ParsingBadMeta

llvm-svn: 375014

The commit for D53137 left out the last round of improvements
requested by reviewers. Adding those in now.

llvm-svn: 375013

C++ class member functions.

Patch by Sourabh Singh Tomar!

Differential Revision: https://reviews.llvm.org/D68697

llvm-svn: 375012

Different OSs have different error strings:

http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/39534/steps/ninja%20check%201/logs/FAIL%3A%20LLVM-Unit%3A%3AYAMLRemarks.ParsingBadMeta

llvm-svn: 375011

Summary: Add read-only system register ID_MMFR5_EL1 and unit tests.

Subscribers: kristof.beyls, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69039

llvm-svn: 375010

Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be.

llvm-svn: 375009

This helps with testing and debugging for paths that are assumed
absolute.

It also uses a FileError to provide the file path it's trying to open.

llvm-svn: 375008