platform/upstream/llvm.git
5 years ago[Tests] Add a few more tests for idioms with FP induction variables
Philip Reames [Mon, 14 Oct 2019 19:10:39 +0000 (19:10 +0000)]
[Tests] Add a few more tests for idioms with FP induction variables

llvm-svn: 374807

5 years ago[libc++][test] Portability fix for std::any tests
Casey Carter [Mon, 14 Oct 2019 19:05:04 +0000 (19:05 +0000)]
[libc++][test] Portability fix for std::any tests

Ensure that `large_tracked_t` defined in `any_helpers.h` is in fact too large to fit in `std::any`'s small object buffer.

llvm-svn: 374806

5 years ago[clang][IFS][test] Fixing lit test breakages on macOS due to r374798
Puyan Lotfi [Mon, 14 Oct 2019 18:57:29 +0000 (18:57 +0000)]
[clang][IFS][test] Fixing lit test breakages on macOS due to r374798

Adding the quotes breaks tests because on Darwin the name mangling is prefixed
with an underscore.

llvm-svn: 374805

5 years agoFix test breakage caused by r374424
Lawrence D'Anna [Mon, 14 Oct 2019 18:53:27 +0000 (18:53 +0000)]
Fix test breakage caused by r374424

Summary:
The build directory name is based on the test method name, so having
two test methods with the same name in the same test file is a
problem, even if they're in different test classes.

On linux and darwin this conflict can go unnoticed, but windows
has different filesystem semantics and it will fail when one
process tries to delete files still held open by another.

The problem is fixed just by changing the name of one of the test
methods.

Reviewers: JDevlieghere, jasonmolenda, labath, stella.stamenova

Reviewed By: stella.stamenova

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D68951

llvm-svn: 374803

5 years ago[ThinLTO] Fix printing of NoInline function summary flag
Teresa Johnson [Mon, 14 Oct 2019 18:37:31 +0000 (18:37 +0000)]
[ThinLTO] Fix printing of NoInline function summary flag

Summary:
The guard for printing function flags in the summary was not checking
the NoInline flag.

Reviewers: wmi

Subscribers: mehdi_amini, inglorion, hiraditya, steven_wu, dexonsmith, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68948

llvm-svn: 374802

5 years agoAMDGPU: Fix redundant setting of m0 for atomic load/store
Matt Arsenault [Mon, 14 Oct 2019 18:30:31 +0000 (18:30 +0000)]
AMDGPU: Fix redundant setting of m0 for atomic load/store

Atomic load/store would have their setting of m0 handled twice, which
happened to be optimized out later.

llvm-svn: 374801

5 years agoAMDGPU: Remove unnecessary IR from test
Matt Arsenault [Mon, 14 Oct 2019 18:30:29 +0000 (18:30 +0000)]
AMDGPU: Remove unnecessary IR from test

llvm-svn: 374800

5 years ago[clangd] Improve semantic highlighting in dependent contexts (fixes #154)
Nathan Ridge [Mon, 14 Oct 2019 18:26:13 +0000 (18:26 +0000)]
[clangd] Improve semantic highlighting in dependent contexts (fixes #154)

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D67901

llvm-svn: 374799

5 years ago[clang][IFS] Escape mangled names so MS ABI doesn't break YAML parsing.
Puyan Lotfi [Mon, 14 Oct 2019 18:03:03 +0000 (18:03 +0000)]
[clang][IFS] Escape mangled names so  MS ABI doesn't break YAML parsing.

Microsoft's ABI mangles names differently than Itanium and this breaks the LLVM
yaml parser unless the name is escaped in quotes. Quotes are being added to the
mangled names of the IFS file generation so that llvm-ifs doesn't break when
Windows triples are passed to the driver.

Differential Revision: https://reviews.llvm.org/D68915

llvm-svn: 374798

5 years ago[libc++][test] Add license headers to test/support/archetypes.*
Casey Carter [Mon, 14 Oct 2019 18:00:34 +0000 (18:00 +0000)]
[libc++][test] Add license headers to test/support/archetypes.*

Differential Revision: https://reviews.llvm.org/D68947

llvm-svn: 374797

5 years agoFix copy-pasto in r374759
Hans Wennborg [Mon, 14 Oct 2019 17:52:31 +0000 (17:52 +0000)]
Fix copy-pasto in r374759

llvm-svn: 374796

5 years ago[llvm-objdump] Adjust spacing and field width for --section-headers
Jordan Rupprecht [Mon, 14 Oct 2019 17:47:17 +0000 (17:47 +0000)]
[llvm-objdump] Adjust spacing and field width for --section-headers

Summary:
- Expand the "Name" column past 13 characters when any of the section names are longer. Current behavior is a staggard output instead of a nice table if a single name is longer.
- Only print the required number of hex chars for addresses (i.e. 8 characters for 32-bit, 16 characters for 64-bit)
- Fix trailing spaces

Reviewers: grimar, jhenderson, espindola

Reviewed By: grimar

Subscribers: emaste, sbc100, arichardson, aheejin, seiya, llvm-commits, MaskRay

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68730

llvm-svn: 374795

5 years agoAdd FMF to vector ops for phi
Michael Berg [Mon, 14 Oct 2019 17:39:32 +0000 (17:39 +0000)]
Add FMF to vector ops for phi

Summary: Small amendment to handle vector cases for D67564.

Reviewers: spatel, eli.friedman, hfinkel, cameron.mcinally, arsenm, jmolloy, bogner

Reviewed By: cameron.mcinally, bogner

Subscribers: llvm-commits, efriedma, reames, bogner, wdng

Differential Revision: https://reviews.llvm.org/D68748

llvm-svn: 374794

5 years agoReapply: [llvm-size] Tidy up error messages (PR42970)
Jordan Rupprecht [Mon, 14 Oct 2019 17:29:15 +0000 (17:29 +0000)]
Reapply: [llvm-size] Tidy up error messages (PR42970)

Clean up some formatting inconsistencies in the error messages and correctly exit with non-zero in all error cases.

Originally submitted as r374771 and then reverted as r374780, this patch fixes the libObject test case in Object/macho-invalid.test.

Patch by Alex Cameron

Differential Revision: https://reviews.llvm.org/D68906

llvm-svn: 374793

5 years ago[llvm-profdata] Weaken "malformed-ptr-to-counter-array.test" to appease arm bots
Vedant Kumar [Mon, 14 Oct 2019 17:20:22 +0000 (17:20 +0000)]
[llvm-profdata] Weaken "malformed-ptr-to-counter-array.test" to appease arm bots

There are a number arm bots failing after r374617 landed, and I'm not
sure why. It looks a bit like the error message llvm-profdata is
expected to print to stderr isn't flushed.

Weaken the test in an attempt to appease the arm bots: if this doesn't
work, that means that llvm-profdata is actually *not failing*, and that
will be a clear indication that some logic error is actually happening.

http://lab.llvm.org:8011/builders/clang-cmake-armv7-global-isel/builds/5604/

llvm-svn: 374792

5 years ago[OPENMP50]Add support for 'parallel master taskloop' construct.
Alexey Bataev [Mon, 14 Oct 2019 17:17:41 +0000 (17:17 +0000)]
[OPENMP50]Add support for 'parallel master taskloop' construct.

Added parsing/sema/codegen support for 'parallel master taskloop'
constructs. Some of the clauses, like 'grainsize', 'num_tasks', 'final'
and 'priority' are not supported in full, only constant expressions can
be used currently in these clauses.

llvm-svn: 374791

5 years ago[NVPTX] Restructure shfl instrinsics and add variants that return a predicate.
Artem Belevich [Mon, 14 Oct 2019 16:53:34 +0000 (16:53 +0000)]
[NVPTX] Restructure shfl instrinsics and add variants that return a predicate.

Also, amend constraints for non-sync variants that are no longer
available on sm_70+ with PTX6.4+.

Differential Revision: https://reviews.llvm.org/D68892

llvm-svn: 374790

5 years agoBitsInit::resolveReferences - silence static analyzer null dereference warning. NFCI.
Simon Pilgrim [Mon, 14 Oct 2019 16:46:21 +0000 (16:46 +0000)]
BitsInit::resolveReferences - silence static analyzer null dereference warning. NFCI.

The static analyzer is warning about a potential null dereference, assert to check that the loop has set the cached pointer.

llvm-svn: 374789

5 years agoXCOFFObjectWriter - silence static analyzer dyn_cast<> null dereference warning....
Simon Pilgrim [Mon, 14 Oct 2019 16:46:11 +0000 (16:46 +0000)]
XCOFFObjectWriter - silence static analyzer dyn_cast<> null dereference warning. NFCI.

The static analyzer is warning about a potential null dereference, but we should be able to use cast<> directly and if not assert will fire for us.

llvm-svn: 374788

5 years ago[OPENMP]Fix codegen for private variably length vars in combined
Alexey Bataev [Mon, 14 Oct 2019 16:44:01 +0000 (16:44 +0000)]
[OPENMP]Fix codegen for private variably length vars in combined
constructs.

If OpenMP construct includes several capturing regions and the variable
is declared as private, the length of the inner variable length array is
not captured in outer captured regions, only in the innermost region.
Patch fixes this bug.

llvm-svn: 374787

5 years ago[CostModel][X86] Add CTLZ scalar costs
Simon Pilgrim [Mon, 14 Oct 2019 16:30:17 +0000 (16:30 +0000)]
[CostModel][X86] Add CTLZ scalar costs

Add specific scalar costs for CTLZ instructions, we can't discriminate between CTLZ and CTLZ_ZERO_UNDEF so we have to assume the worst. Given how BSR is often a microcoded nightmare on some older targets we might still be underestimating it.

For targets supporting LZCNT (Intel Haswell+ or AMD Fam10+), we provide overrides that assume 1cy costs.

llvm-svn: 374786

5 years ago[ARM] Preserve fpu behaviour for '-crypto'
Diogo N. Sampaio [Mon, 14 Oct 2019 16:29:26 +0000 (16:29 +0000)]
[ARM] Preserve fpu behaviour for '-crypto'

Summary:
This patch restores the behaviour that -fpu overwrites the
architecture obtained from -march or -mcpu flags, not enforcing to
disable 'crypto' if march=armv7 and mfpu=neon-fp-armv8.
However, it does warn that 'crypto' is ignored when passing
mfpu=crypto-neon-fp-armv8.

Reviewers: peter.smith, labrinea

Reviewed By: peter.smith

Subscribers: nickdesaulniers, kristof.beyls, dmgreen, cfe-commits, krisb

Tags: #clang

Differential Revision: https://reviews.llvm.org/D67608

llvm-svn: 374785

5 years agoReapply r374743 with a fix for the ocaml binding
Joerg Sonnenberger [Mon, 14 Oct 2019 16:15:14 +0000 (16:15 +0000)]
Reapply r374743 with a fix for the ocaml binding

Add a pass to lower is.constant and objectsize intrinsics

This pass lowers is.constant and objectsize intrinsics not simplified by
earlier constant folding, i.e. if the object given is not constant or if
not using the optimized pass chain. The result is recursively simplified
and constant conditionals are pruned, so that dead blocks are removed
even for -O0. This allows inline asm blocks with operand constraints to
work all the time.

The new pass replaces the existing lowering in the codegen-prepare pass
and fallbacks in SDAG/GlobalISEL and FastISel. The latter now assert
on the intrinsics.

Differential Revision: https://reviews.llvm.org/D65280

llvm-svn: 374784

5 years ago[x86] adjust select to sra tests; NFC
Sanjay Patel [Mon, 14 Oct 2019 15:53:55 +0000 (15:53 +0000)]
[x86] adjust select to sra tests; NFC

Avoid demanded-bits-based specializations (that may not be ideal,
but that's another problem).

llvm-svn: 374783

5 years ago[IRBuilder] Update IRBuilder::CreateFNeg(...) to return a UnaryOperator
Cameron McInally [Mon, 14 Oct 2019 15:35:01 +0000 (15:35 +0000)]
[IRBuilder] Update IRBuilder::CreateFNeg(...) to return a UnaryOperator

Reapply r374240 with fix for Ocaml test, namely Bindings/OCaml/core.ml.

Differential Revision: https://reviews.llvm.org/D61675

llvm-svn: 374782

5 years ago[ARM] Selection for MVE VMOVN
David Green [Mon, 14 Oct 2019 15:19:33 +0000 (15:19 +0000)]
[ARM] Selection for MVE VMOVN

The adds both VMOVNt and VMOVNb instruction selection from the appropriate
shuffles. We detect shuffle masks of the form:
0, N, 2, N+2, 4, N+4, ...
or
0, N+1, 2, N+3, 4, N+5, ...
ISel will also try the opposite patterns, with inputs reversed. These are
selected to VMOVNt and VMOVNb respectively.

Differential Revision: https://reviews.llvm.org/D68283

llvm-svn: 374781

5 years agoRevert r374771 "[llvm-size] Tidy up error messages (PR42970)"
Nico Weber [Mon, 14 Oct 2019 14:44:26 +0000 (14:44 +0000)]
Revert r374771 "[llvm-size] Tidy up error messages (PR42970)"

This reverts commit 83e52f5e1150018329b8907bb014c77ac382d611.

Makes Object/macho-invalid.test fail everywhere, e.g. here:
http://lab.llvm.org:8011/builders/llvm-hexagon-elf/builds/23669/steps/test-llvm/logs/FAIL%3A%20LLVM%3A%3Amacho-invalid.test

llvm-svn: 374780

5 years ago[x86] add tests for possible select to sra transforms; NFC
Sanjay Patel [Mon, 14 Oct 2019 14:43:06 +0000 (14:43 +0000)]
[x86] add tests for possible select to sra transforms; NFC

llvm-svn: 374779

5 years ago[libc++][test] Silence more warnings in variant tests
Casey Carter [Mon, 14 Oct 2019 14:38:12 +0000 (14:38 +0000)]
[libc++][test] Silence more warnings in variant tests

More cases of signed-to-unsigned conversion warnings that missed the train for d2623522.

llvm-svn: 374778

5 years ago[ARM] Add some VMOVN tests. NFC
David Green [Mon, 14 Oct 2019 14:29:26 +0000 (14:29 +0000)]
[ARM] Add some VMOVN tests. NFC

llvm-svn: 374777

5 years agominidump: Use yaml for memory info tests
Pavel Labath [Mon, 14 Oct 2019 14:16:39 +0000 (14:16 +0000)]
minidump: Use yaml for memory info tests

Also, delete some minidump binary files that are no longer used in any
test.

llvm-svn: 374776

5 years ago[CostModel][X86] Add CTPOP scalar costs (PR43656)
Simon Pilgrim [Mon, 14 Oct 2019 14:07:43 +0000 (14:07 +0000)]
[CostModel][X86] Add CTPOP scalar costs (PR43656)

Add specific scalar costs for ctpop instructions, these are based on the llvm-mca's SLM throughput numbers (the oldest model we have).

For targets supporting POPCNT, we provide overrides that assume 1cy costs.

llvm-svn: 374775

5 years ago[RISCV] enable LTO support, pass some options to linker.
Sam Elliott [Mon, 14 Oct 2019 14:00:13 +0000 (14:00 +0000)]
[RISCV] enable LTO support, pass some options to linker.

Summary:
1. enable LTO need to pass target feature and abi to LTO code generation
   RISCV backend need the target feature to decide which extension used in
   code generation.
2. move getTargetFeatures to CommonArgs.h and add ForLTOPlugin flag
3. add general tools::getTargetABI in CommonArgs.h because different target uses different
   way to get the target ABI.

Patch by Kuan Hsu Chen (khchen)

Reviewers: lenary, lewis-revill, asb, MaskRay

Reviewed By: lenary

Subscribers: hiraditya, dschuff, aheejin, fedor.sergeev, mehdi_amini, inglorion, asb, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, MaskRay, zzheng, edward-jones, steven_wu, rogfer01, MartinMosbeck, brucehoult, the_o, dexonsmith, rkruppe, PkmX, jocewei, psnobl, benna, Jim, lenary, s.egerton, pzheng, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D67409

llvm-svn: 374774

5 years ago[Alignment][NFC] Move and type functions from MathExtras to Alignment
Guillaume Chatelet [Mon, 14 Oct 2019 13:14:34 +0000 (13:14 +0000)]
[Alignment][NFC] Move and type functions from MathExtras to Alignment

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68942

llvm-svn: 374773

5 years ago[AArch64] Stackframe accesses to SVE objects.
Sander de Smalen [Mon, 14 Oct 2019 13:11:34 +0000 (13:11 +0000)]
[AArch64] Stackframe accesses to SVE objects.

Materialize accesses to SVE frame objects from SP or FP, whichever is
available and beneficial.

This patch still assumes the objects are pre-allocated. The automatic
layout of SVE objects within the stackframe will be added in a separate
patch.

Reviewers: greened, cameron.mcinally, efriedma, rengolin, thegameg, rovka

Reviewed By: cameron.mcinally

Differential Revision: https://reviews.llvm.org/D67749

llvm-svn: 374772

5 years ago[llvm-size] Tidy up error messages (PR42970)
Fangrui Song [Mon, 14 Oct 2019 12:51:47 +0000 (12:51 +0000)]
[llvm-size] Tidy up error messages (PR42970)

Clean up some formatting inconsistencies in the error messages and correctly exit with non-zero in all error cases.

Differential Revision: https://reviews.llvm.org/D68906
Patch by Alex Cameron

llvm-svn: 374771

5 years ago[DebugInfo] Fix truncation of call site immediates
David Stenberg [Mon, 14 Oct 2019 12:49:58 +0000 (12:49 +0000)]
[DebugInfo] Fix truncation of call site immediates

Summary:
This addresses a bug in collectCallSiteParameters() where call site
immediates would be truncated from int64_t to unsigned.

This fixes PR43525.

Reviewers: djtodoro, NikolaPrica, aprantl, vsk

Reviewed By: aprantl

Subscribers: hiraditya, llvm-commits

Tags: #debug-info, #llvm

Differential Revision: https://reviews.llvm.org/D68869

llvm-svn: 374770

5 years agoDWARFExpression: Fix/add support for (v4) debug_loc base address selection entries
Pavel Labath [Mon, 14 Oct 2019 12:49:06 +0000 (12:49 +0000)]
DWARFExpression: Fix/add support for (v4) debug_loc base address selection entries

The DWARFExpression is parsing the location lists in about five places.
Of those, only one actually had proper support for base address
selection entries.

Since r374600, llvm has started to produce location expressions with
base address selection entries more aggresively, which caused some tests
to fail.

This patch adds support for these entries to the places which had it
missing, fixing the failing tests. It also adds a targeted test for the
two of the three fixes, which should continue testing this functionality
even if the llvm output changes. I am not aware of a way to write a
targeted test for the third fix (DWARFExpression::Evaluate).

llvm-svn: 374769

5 years agoRevert "Add a pass to lower is.constant and objectsize intrinsics"
Dmitri Gribenko [Mon, 14 Oct 2019 12:22:48 +0000 (12:22 +0000)]
Revert "Add a pass to lower is.constant and objectsize intrinsics"

This reverts commit r374743. It broke the build with Ocaml enabled:
http://lab.llvm.org:8011/builders/clang-x86_64-debian-fast/builds/19218

llvm-svn: 374768

5 years ago[AMDGPU] Come back patch for the 'Assign register class for cross block values accord...
Alexander Timofeev [Mon, 14 Oct 2019 12:01:10 +0000 (12:01 +0000)]
[AMDGPU] Come back patch for the 'Assign register class for cross block values according to the divergence.'

  Detailed description:

    After https://reviews.llvm.org/D59990 submit several issues were discovered.
    Changes in common code were preserved but AMDGPU specific part was reverted to keep the backend working correctly.

    Discovered issues were addressed in the following commits:

    https://reviews.llvm.org/D67662
    https://reviews.llvm.org/D67101
    https://reviews.llvm.org/D63953
    https://reviews.llvm.org/D63731

    This change brings back AMDGPU specific changes.

  Reviewed by: rampitec, arsenm

  Differential Revision: https://reviews.llvm.org/D68635

llvm-svn: 374767

5 years agoFixing typo in llvm/IR/Intrinsics.td
Victor Campos [Mon, 14 Oct 2019 11:12:23 +0000 (11:12 +0000)]
Fixing typo in llvm/IR/Intrinsics.td

Fixing typo in comment line.

llvm-svn: 374766

5 years ago[X86][BtVer2] Improved latency and throughput of float/vector loads and stores.
Andrea Di Biagio [Mon, 14 Oct 2019 11:12:18 +0000 (11:12 +0000)]
[X86][BtVer2] Improved latency and throughput of float/vector loads and stores.

This patch introduces the following changes to the btver2 scheduling model:

- The number of micro opcodes for YMM loads and stores is now 2 (it was
  incorrectly set to 1 for both aligned and misaligned loads/stores).

- Increased the number of AGU resource cycles for YMM loads and stores
  to 2cy (instead of 1cy).

- Removed JFPU01 and JFPX from the list of resources consumed by pure
  float/vector loads (no MMX).

I verified with llvm-exegesis that pure XMM/YMM loads are no-pipe. Those
are dispatched to the FPU but not really issues on JFPU01.

Differential Revision: https://reviews.llvm.org/D68871

llvm-svn: 374765

5 years ago[NFC][TTI] Add Alignment for isLegalMasked[Load/Store]
Sam Parker [Mon, 14 Oct 2019 10:00:21 +0000 (10:00 +0000)]
[NFC][TTI] Add Alignment for isLegalMasked[Load/Store]

Add an extra parameter so the backend can take the alignment into
consideration.

Differential Revision: https://reviews.llvm.org/D68400

llvm-svn: 374763

5 years agoFix D68936
Guillaume Chatelet [Mon, 14 Oct 2019 09:31:00 +0000 (09:31 +0000)]
Fix D68936

llvm-svn: 374761

5 years agobuild_llvm_package.bat: Run check-clang-tools and check-clangd tests.
Hans Wennborg [Mon, 14 Oct 2019 09:08:57 +0000 (09:08 +0000)]
build_llvm_package.bat: Run check-clang-tools and check-clangd tests.

llvm-svn: 374759

5 years ago[Alignment][NFC] Support compile time constants
Guillaume Chatelet [Mon, 14 Oct 2019 09:04:15 +0000 (09:04 +0000)]
[Alignment][NFC] Support compile time constants

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68936

llvm-svn: 374758

5 years ago[docs] loop pragmas: options implying transformations
Sjoerd Meijer [Mon, 14 Oct 2019 07:40:36 +0000 (07:40 +0000)]
[docs] loop pragmas: options implying transformations

Following our discussion on the cfe dev list:
http://lists.llvm.org/pipermail/cfe-dev/2019-August/063054.html,
I have added a paragraph that is explicit about loop pragmas, and
transformation options implying the corresponding transformation.

Differential Revision: https://reviews.llvm.org/D66199

llvm-svn: 374756

5 years ago[X86] Teach EmitTest to handle ISD::SSUBO/USUBO in order to use the Z flag from the...
Craig Topper [Mon, 14 Oct 2019 06:47:56 +0000 (06:47 +0000)]
[X86] Teach EmitTest to handle ISD::SSUBO/USUBO in order to use the Z flag from the subtract directly during isel.

This prevents isel from emitting a TEST instruction that
optimizeCompareInstr will need to remove later.

In some of the modified tests, the SUB gets duplicated due to
the flags being needed in two places and being clobbered in
between. optimizeCompareInstr was able to optimize away the TEST
that was using the result of one of them, but optimizeCompareInstr
doesn't know to turn SUB into CMP after removing the TEST. It
only knows how to turn SUB into CMP if the result was already
dead.

With this change the TEST never exists, so optimizeCompareInstr
doesn't have to remove it. Then it can just turn the SUB into
CMP immediately.

Fixes PR43649.

llvm-svn: 374755

5 years ago[clang] [clang-offload-bundler] Fix finding installed llvm-objcopy
Michal Gorny [Mon, 14 Oct 2019 05:33:23 +0000 (05:33 +0000)]
[clang] [clang-offload-bundler] Fix finding installed llvm-objcopy

Allow finding installed llvm-objcopy in PATH if it's not present
in the directory containing clang-offload-bundler.  This is the case
if clang is being built stand-alone, and llvm-objcopy is already
installed while the c-o-b tool is still present in build directory.

This is consistent with how e.g. llvm-symbolizer is found in LLVM.
However, most of similar searches in LLVM and Clang are performed
without special-casing the program directory.

Fixes r369955.

Differential Revision: https://reviews.llvm.org/D68931

llvm-svn: 374754

5 years agoclangd tests: use extended regex with sed
Nico Weber [Mon, 14 Oct 2019 03:44:47 +0000 (03:44 +0000)]
clangd tests: use extended regex with sed

The escaped parens seem to confuse the combination of lit, cygwin
quoting, and cygwin's sed. unxutils sed in cmd.exe is fine with both
forms, so use the extended regex form that doesn't need an escaped
paren.

llvm-svn: 374753

5 years agoconvert another test to unix line endings
Nico Weber [Mon, 14 Oct 2019 02:21:12 +0000 (02:21 +0000)]
convert another test to unix line endings

llvm-svn: 374752

5 years agoconvert a test to unix line endings
Nico Weber [Mon, 14 Oct 2019 02:14:18 +0000 (02:14 +0000)]
convert a test to unix line endings

llvm-svn: 374751

5 years agofix typo in 374747
Nico Weber [Mon, 14 Oct 2019 01:44:29 +0000 (01:44 +0000)]
fix typo in 374747

llvm-svn: 374750

5 years agoPrefer 'env not' over 'not env' in tests.
Nico Weber [Mon, 14 Oct 2019 01:41:56 +0000 (01:41 +0000)]
Prefer 'env not' over 'not env' in tests.

That way, lit's builtin 'env' command can be used for the 'env' bit.

Also it's clearer that way that the 'not' shouldn't cover 'env'
failures.

llvm-svn: 374749

5 years ago[X86] Autogenerate complete checks. NFC
Craig Topper [Mon, 14 Oct 2019 01:41:04 +0000 (01:41 +0000)]
[X86] Autogenerate complete checks. NFC

llvm-svn: 374748

5 years agoMake symbols.test pass on Windows.
Nico Weber [Mon, 14 Oct 2019 01:19:53 +0000 (01:19 +0000)]
Make symbols.test pass on Windows.

See commit message of r374746 for details.

Hopefully final bit of PR43592.

llvm-svn: 374747

5 years agoMake code-action-request.test and request-reply.test pass on Windows.
Nico Weber [Mon, 14 Oct 2019 01:00:33 +0000 (01:00 +0000)]
Make code-action-request.test and request-reply.test pass on Windows.

clangd's test:// scheme expands to /clangd-test on non-Win and to
C:/clang-test on Win, so it can't be mixed freely with
file:///clangd-test since that's wrong on Windows. This makes both
tests consistenly use the test:// scheme. (Alternatively, we could use
the //INPUT_DIR pattern used in a few other tests.)

Part of PR43592.

llvm-svn: 374746

5 years agoDon't run background-index.test on Windows.
Nico Weber [Mon, 14 Oct 2019 00:45:02 +0000 (00:45 +0000)]
Don't run background-index.test on Windows.

The test had a "UNSUPPORTED: win32" line, but the spelling of that
changed in r339307 a year ago. Finally update this test too.

Part of PR43592.

llvm-svn: 374745

5 years ago[NewGVN] Use m_Br to simplify code a bit. (NFC)
Florian Hahn [Sun, 13 Oct 2019 23:34:13 +0000 (23:34 +0000)]
[NewGVN] Use m_Br to simplify code a bit. (NFC)

llvm-svn: 374744

5 years agoAdd a pass to lower is.constant and objectsize intrinsics
Joerg Sonnenberger [Sun, 13 Oct 2019 23:00:15 +0000 (23:00 +0000)]
Add a pass to lower is.constant and objectsize intrinsics

This pass lowers is.constant and objectsize intrinsics not simplified by
earlier constant folding, i.e. if the object given is not constant or if
not using the optimized pass chain. The result is recursively simplified
and constant conditionals are pruned, so that dead blocks are removed
even for -O0. This allows inline asm blocks with operand constraints to
work all the time.

The new pass replaces the existing lowering in the codegen-prepare pass
and fallbacks in SDAG/GlobalISEL and FastISel. The latter now assert
on the intrinsics.

Differential Revision: https://reviews.llvm.org/D65280

llvm-svn: 374743

5 years agoImprove __builtin_constant_p lowering
Joerg Sonnenberger [Sun, 13 Oct 2019 22:33:46 +0000 (22:33 +0000)]
Improve __builtin_constant_p lowering

__builtin_constant_p used to be short-cut evaluated to false when
building with -O0. This is undesirable as it means that constant folding
in the front-end can give different results than folding in the back-end.
It can also create conditional branches on constant conditions that don't
get folded away. With the pending improvements to the llvm.is.constant
handling on the LLVM side, the short-cut is no longer useful.

Adjust various codegen tests to not depend on the short-cut or the
backend optimisations.

Differential Revision: https://reviews.llvm.org/D67638

llvm-svn: 374742

5 years agomerge-request.sh: Update 9.0 metabug for 9.0.1
Simon Atanasyan [Sun, 13 Oct 2019 22:10:06 +0000 (22:10 +0000)]
merge-request.sh: Update 9.0 metabug for 9.0.1

llvm-svn: 374741

5 years ago[Attributor] Shortcut no-return through will-return
Johannes Doerfert [Sun, 13 Oct 2019 21:25:53 +0000 (21:25 +0000)]
[Attributor] Shortcut no-return through will-return

No-return and will-return are exclusive, assuming the latter is more
prominent we can avoid updates of the former unless will-return is not
known for sure.

llvm-svn: 374739

5 years ago[Attributor][FIX] NullPointerIsDefined needs the pointer AS (AANonNull)
Johannes Doerfert [Sun, 13 Oct 2019 20:48:26 +0000 (20:48 +0000)]
[Attributor][FIX] NullPointerIsDefined needs the pointer AS (AANonNull)

Also includes a shortcut via AADereferenceable if possible.

llvm-svn: 374737

5 years ago[Attributor][MemBehavior] Fallback to the function state for arguments
Johannes Doerfert [Sun, 13 Oct 2019 20:47:16 +0000 (20:47 +0000)]
[Attributor][MemBehavior] Fallback to the function state for arguments

Even if an argument is captured, we cannot have an effect the function
does not have. This is fine except for the special case of `inalloca` as
it does not behave by the rules.

TODO: Maybe the special rule for `inalloca` is wrong after all.
llvm-svn: 374736

5 years ago[Attributor][FIX] Use check prefix that is actually tested
Johannes Doerfert [Sun, 13 Oct 2019 20:40:10 +0000 (20:40 +0000)]
[Attributor][FIX] Use check prefix that is actually tested

Summary:
This changes "CHECK" check lines to "ATTRIBUTOR" check lines where
necessary and also fixes the now exposed, mostly minor, problems.

Reviewers: sstefan1, uenoku

Subscribers: hiraditya, bollu, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68929

llvm-svn: 374735

5 years ago[NFC][InstCombine] Some preparatory cleanup in dropRedundantMaskingOfLeftShiftInput()
Roman Lebedev [Sun, 13 Oct 2019 20:15:00 +0000 (20:15 +0000)]
[NFC][InstCombine] Some preparatory cleanup in dropRedundantMaskingOfLeftShiftInput()

llvm-svn: 374734

5 years ago[Docs] Moves Control Flow Document to User Guides
DeForest Richards [Sun, 13 Oct 2019 20:05:22 +0000 (20:05 +0000)]
[Docs] Moves Control Flow Document to User Guides

Moves Control Flow document from Reference docs page to User guides page.

llvm-svn: 374733

5 years ago[X86] getTargetShuffleInputs - Control KnownUndef mask element resolution as well...
Simon Pilgrim [Sun, 13 Oct 2019 19:35:35 +0000 (19:35 +0000)]
[X86] getTargetShuffleInputs - Control KnownUndef mask element resolution as well as KnownZero.

We were already controlling whether the KnownZero elements were being written to the target mask, this extends it to the KnownUndef elements as well so we can prevent the target shuffle mask being manipulated at all.

llvm-svn: 374732

5 years ago[X86] Enable use of avx512 saturating truncate instructions in more cases.
Craig Topper [Sun, 13 Oct 2019 19:07:28 +0000 (19:07 +0000)]
[X86] Enable use of avx512 saturating truncate instructions in more cases.

This enables use of the saturating truncate instructions when the
result type is less than 128 bits. It also enables the use of
saturating truncate instructions on KNL when the input is less
than 512 bits. We can do this by widening the input and then
extracting the result.

llvm-svn: 374731

5 years agoAdd missing "REQUIRES: shell" to system-include-extractor.test
Nico Weber [Sun, 13 Oct 2019 17:43:16 +0000 (17:43 +0000)]
Add missing "REQUIRES: shell" to system-include-extractor.test

Part of PR43592.

llvm-svn: 374730

5 years ago[ConstantFold] fix inconsistent handling of extractelement with undef index (PR42689)
Sanjay Patel [Sun, 13 Oct 2019 17:34:08 +0000 (17:34 +0000)]
[ConstantFold] fix inconsistent handling of extractelement with undef index (PR42689)

Any constant other than zero was already folded to undef if the index is undef.
https://bugs.llvm.org/show_bug.cgi?id=42689

llvm-svn: 374729

5 years ago[InstCombine] don't assume 'inbounds' for bitcast deref or null pointer in non-defaul...
Sanjay Patel [Sun, 13 Oct 2019 17:19:08 +0000 (17:19 +0000)]
[InstCombine] don't assume 'inbounds' for bitcast deref or null pointer in non-default address space

Follow-up to D68244 to account for a corner case discussed in:
https://bugs.llvm.org/show_bug.cgi?id=43501

Add one more restriction: if the pointer is deref-or-null and in a non-default
(non-zero) address space, we can't assume inbounds.

Differential Revision: https://reviews.llvm.org/D68706

llvm-svn: 374728

5 years agoMake the last to clangd unit tests pass on Windows.
Nico Weber [Sun, 13 Oct 2019 17:19:00 +0000 (17:19 +0000)]
Make the last to clangd unit tests pass on Windows.

(Some lit tests still fail.)

See FIXME in diff for details.

Part of PR43592.

llvm-svn: 374727

5 years ago[NFC][InstCombine] More test for "sign bit test via shifts" pattern (PR43595)
Roman Lebedev [Sun, 13 Oct 2019 17:11:16 +0000 (17:11 +0000)]
[NFC][InstCombine] More test for "sign bit test via shifts" pattern (PR43595)

While that pattern is indirectly handled via
reassociateShiftAmtsOfTwoSameDirectionShifts(),
that incursme one-use restriction on truncation,
which is pointless since we know that we'll produce a single instruction.

Additionally, *if* we are only looking for sign bit,
we don't need shifts to be identical,
which isn't the case in general,
and is the blocker for me in bug in question:

https://bugs.llvm.org/show_bug.cgi?id=43595

llvm-svn: 374726

5 years ago[X86] SimplifyMultipleUseDemandedBitsForTargetNode - use getTargetShuffleInputs with...
Simon Pilgrim [Sun, 13 Oct 2019 17:03:11 +0000 (17:03 +0000)]
[X86] SimplifyMultipleUseDemandedBitsForTargetNode - use getTargetShuffleInputs with KnownUndef/Zero results.

llvm-svn: 374725

5 years ago[X86] getTargetShuffleInputs - add KnownUndef/Zero output support
Simon Pilgrim [Sun, 13 Oct 2019 17:03:02 +0000 (17:03 +0000)]
[X86] getTargetShuffleInputs - add KnownUndef/Zero output support

Adjust SimplifyDemandedVectorEltsForTargetNode to use the known elts masks instead of recomputing it locally.

llvm-svn: 374724

5 years ago[libc++][test] std::variant test cleanup
Casey Carter [Sun, 13 Oct 2019 16:46:16 +0000 (16:46 +0000)]
[libc++][test] std::variant test cleanup

* Add the conventional `return 0` to `main` in `variant.assign/conv.pass.cpp` and `variant.ctor/conv.pass.cpp`

* Fix some MSVC signed-to-unsigned conversion warnings by replacing `int` literarls with `unsigned int` literals

llvm-svn: 374723

5 years ago[libc++][test] <=> now has a feature-test macro
Casey Carter [Sun, 13 Oct 2019 16:46:12 +0000 (16:46 +0000)]
[libc++][test] <=> now has a feature-test macro

...which `test/support/test_macros.h` can use to detect compiler support.

llvm-svn: 374722

5 years agogn build: (manually) merge r374720
Nico Weber [Sun, 13 Oct 2019 15:25:13 +0000 (15:25 +0000)]
gn build: (manually) merge r374720

llvm-svn: 374721

5 years ago[clang-format] Proposal for clang-format to give compiler style warnings
Paul Hoad [Sun, 13 Oct 2019 14:51:45 +0000 (14:51 +0000)]
[clang-format] Proposal for clang-format to give compiler style warnings

relanding {D68554} with fixed lit tests, checked on Windows and MacOS

llvm-svn: 374720

5 years ago[X86][AVX] Add i686 avx splat tests
Simon Pilgrim [Sun, 13 Oct 2019 13:18:07 +0000 (13:18 +0000)]
[X86][AVX] Add i686 avx splat tests

llvm-svn: 374719

5 years agoMake most clangd unittests pass on Windows
Nico Weber [Sun, 13 Oct 2019 13:15:27 +0000 (13:15 +0000)]
Make most clangd unittests pass on Windows

The Windows triple currently turns on delayed template parsing, which
confuses several unit tests that use templates.

For now, just explicitly disable delayed template parsing. This isn't
ideal, but:

- the Windows triple will soon no longer use delayed template parsing
  by default

- there's precedent for this in the clangd unit tests already

- let's get the clangd tests pass on Windows first before making
  behavioral changes

Part of PR43592.

llvm-svn: 374718

5 years agoBlockInCriticalSectionChecker - silence static analyzer dyn_cast null dereference...
Simon Pilgrim [Sun, 13 Oct 2019 11:30:06 +0000 (11:30 +0000)]
BlockInCriticalSectionChecker - silence static analyzer dyn_cast null dereference warning. NFCI.

The static analyzer is warning about a potential null dereference, but we should be able to use cast<> directly and if not assert will fire for us.

llvm-svn: 374717

5 years agoIRTranslator - silence static analyzer null dereference warnings. NFCI.
Simon Pilgrim [Sun, 13 Oct 2019 11:29:35 +0000 (11:29 +0000)]
IRTranslator - silence static analyzer null dereference warnings. NFCI.

The CmpInst::getType() calls can be replaced by just using User::getType() that it was dyn_cast from, and we then need to assert that any default predicate cases came from the CmpInst.

llvm-svn: 374716

5 years ago[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 4
Csaba Dabis [Sun, 13 Oct 2019 10:59:30 +0000 (10:59 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 4

llvm-svn: 374715

5 years ago[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 3
Csaba Dabis [Sun, 13 Oct 2019 10:41:13 +0000 (10:41 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 3

On Windows the signed/unsigned int conversions of APInt seems broken, so that
two of the test files marked as unsupported on Windows, as a hotfix.

llvm-svn: 374713

5 years ago[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 2
Csaba Dabis [Sun, 13 Oct 2019 10:20:58 +0000 (10:20 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: checker adjustments 2

llvm-svn: 374712

5 years ago[clang-tidy] bugprone-not-null-terminated-result: checker adjustments
Csaba Dabis [Sun, 13 Oct 2019 09:46:56 +0000 (09:46 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: checker adjustments

llvm-svn: 374711

5 years ago[clang-tidy] bugprone-not-null-terminated-result: Sphinx adjustments 2
Csaba Dabis [Sun, 13 Oct 2019 08:49:43 +0000 (08:49 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: Sphinx adjustments 2

llvm-svn: 374710

5 years ago[clang-tidy] bugprone-not-null-terminated-result: Sphinx adjustments
Csaba Dabis [Sun, 13 Oct 2019 08:41:24 +0000 (08:41 +0000)]
[clang-tidy] bugprone-not-null-terminated-result: Sphinx adjustments

llvm-svn: 374709

5 years agogn build: Merge r374707
GN Sync Bot [Sun, 13 Oct 2019 08:33:14 +0000 (08:33 +0000)]
gn build: Merge r374707

llvm-svn: 374708

5 years ago[clang-tidy] New checker for not null-terminated result caused by strlen(), size...
Csaba Dabis [Sun, 13 Oct 2019 08:28:27 +0000 (08:28 +0000)]
[clang-tidy] New checker for not null-terminated result caused by strlen(), size() or equal length

Summary:
New checker called bugprone-not-null-terminated-result. This checker finds
function calls where it is possible to cause a not null-terminated result.
Usually the proper length of a string is `strlen(src) + 1` or equal length
of this expression, because the null terminator needs an extra space.
Without the null terminator it can result in undefined behaviour when the
string is read.

The following and their respective `wchar_t` based functions are checked:

`memcpy`, `memcpy_s`, `memchr`, `memmove`, `memmove_s`, `strerror_s`,
`strncmp`, `strxfrm`

The following is a real-world example where the programmer forgot to
increase the passed third argument, which is `size_t length`.
That is why the length of the allocated memory is not enough to hold the
null terminator.

```
    static char *stringCpy(const std::string &str) {
      char *result = reinterpret_cast<char *>(malloc(str.size()));
      memcpy(result, str.data(), str.size());
      return result;
    }
```

In addition to issuing warnings, fix-it rewrites all the necessary code.
It also tries to adjust the capacity of the destination array:

```
    static char *stringCpy(const std::string &str) {
      char *result = reinterpret_cast<char *>(malloc(str.size() + 1));
      strcpy(result, str.data());
      return result;
    }
```

Note: It cannot guarantee to rewrite every of the path-sensitive memory
allocations.

Reviewed By: JonasToth, aaron.ballman, whisperity, alexfh

Tags: #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D45050

llvm-svn: 374707

5 years ago[X86] Add a one use check on the setcc to the min/max canonicalization code in combin...
Craig Topper [Sun, 13 Oct 2019 06:48:05 +0000 (06:48 +0000)]
[X86] Add a one use check on the setcc to the min/max canonicalization code in combineSelect.

This seems to improve std::midpoint code where we have a min and
a max with the same condition. If we split the setcc we can end
up with two compares if the one of the operands is a constant.
Since we aggressively canonicalize compares with constants.
For non-constants it can interfere with our ability to share
control flow if we need to expand cmovs into control flow.

I'm also not sure I understand this min/max canonicalization code.
The motivating case talks about comparing with 0. But we don't
check for 0 explicitly.

Removes one instruction from the codegen for PR43658.

llvm-svn: 374706

5 years ago[X86] Enable v4i32->v4i16 and v8i16->v8i8 saturating truncates to use pack instructio...
Craig Topper [Sun, 13 Oct 2019 05:47:47 +0000 (05:47 +0000)]
[X86] Enable v4i32->v4i16 and v8i16->v8i8 saturating truncates to use pack instructions with avx512.

llvm-svn: 374705

5 years ago[X86] Add v2i64->v2i32/v2i16/v2i8 test cases to the trunc packus/ssat/usat tests...
Craig Topper [Sun, 13 Oct 2019 05:47:42 +0000 (05:47 +0000)]
[X86] Add v2i64->v2i32/v2i16/v2i8 test cases to the trunc packus/ssat/usat tests. NFC

llvm-svn: 374704

5 years ago[Attributor][FIX] Avoid splitting blocks if possible
Johannes Doerfert [Sun, 13 Oct 2019 05:27:09 +0000 (05:27 +0000)]
[Attributor][FIX] Avoid splitting blocks if possible

Before, we eagerly split blocks even if it was not necessary, e.g., they
had a single unreachable instruction and only a single predecessor.

llvm-svn: 374703

5 years ago[Attributor][FIX] Remove leftover, now unused, variable
Johannes Doerfert [Sun, 13 Oct 2019 05:19:17 +0000 (05:19 +0000)]
[Attributor][FIX] Remove leftover, now unused, variable

llvm-svn: 374702

5 years ago[Attributor] Remove unused verification flag
Johannes Doerfert [Sun, 13 Oct 2019 05:07:00 +0000 (05:07 +0000)]
[Attributor] Remove unused verification flag

We use the verify max iteration now which is more reliable.

llvm-svn: 374701

5 years ago[Attributor][NFC] Expose call site traversal without QueryingAA
Johannes Doerfert [Sun, 13 Oct 2019 04:16:02 +0000 (04:16 +0000)]
[Attributor][NFC] Expose call site traversal without QueryingAA

llvm-svn: 374700