platform/upstream/llvm.git
5 years agoDon't copy the .drective section with std::string
Reid Kleckner [Fri, 29 Mar 2019 21:00:22 +0000 (21:00 +0000)]
Don't copy the .drective section with std::string

Both COFF and bitcode input files expose these as stable strings.

llvm-svn: 357314

5 years ago[ScriptInterpreterPython] Fix the unit test after refactor
Jonas Devlieghere [Fri, 29 Mar 2019 20:56:52 +0000 (20:56 +0000)]
[ScriptInterpreterPython] Fix the unit test after refactor

llvm-svn: 357313

5 years ago[clang-tidy] Fix PR28406
Alexander Kornienko [Fri, 29 Mar 2019 20:55:29 +0000 (20:55 +0000)]
[clang-tidy] Fix PR28406

Fix the crash resulting from a careless use of getLocWithOffset. At the
beginning of a macro expansion it produces an invalid SourceLocation that causes
an assertion failure later on.

llvm-svn: 357312

5 years ago[WebAssembly] "atomics" feature requires shared memory
Thomas Lively [Fri, 29 Mar 2019 20:43:49 +0000 (20:43 +0000)]
[WebAssembly] "atomics" feature requires shared memory

Summary:
Makes it a linker error if the "atomics" feature is used but the user
does not opt in to shared memory or if "atomics" is disallowed but the
user does opt in to shared memory. Also check that an appropriate max
memory size is supplied if shared memory is used.

Reviewers: sbc100, aheejin

Subscribers: dschuff, jgravelle-google, sunfish, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59281

llvm-svn: 357310

5 years ago[DAGCombiner] Rewrite ImproveLifetimeNodeChain to avoid DAG loop.
Nirav Dave [Fri, 29 Mar 2019 20:26:23 +0000 (20:26 +0000)]
[DAGCombiner] Rewrite ImproveLifetimeNodeChain to avoid DAG loop.

Avoid EXPENSIVE_CHECK failure. NFCI.

llvm-svn: 357309

5 years ago[LLD][COFF] Generate import modules & COFF groups in PDB
Alexandre Ganea [Fri, 29 Mar 2019 20:25:34 +0000 (20:25 +0000)]
[LLD][COFF] Generate import modules & COFF groups in PDB

Generate import modules for each imported DLL, along with its symbol stream.
Also create COFF groups in the * Linker * module, one for each PartialSection (input, unmerged sections)
Currently COFF groups are disabled for MINGW because it significantly increases PDB sizes. We could enable that later with an option.

The overall objective for this change is to support code hot patching tools. Such tools need to know the import libraries used, from the PDB alone.

Differential Revision: https://reviews.llvm.org/D54802

llvm-svn: 357308

5 years ago[Python] Remove Python include from ScriptInterpreterPython.h
Jonas Devlieghere [Fri, 29 Mar 2019 20:17:20 +0000 (20:17 +0000)]
[Python] Remove Python include from ScriptInterpreterPython.h

This patch limits the scope of the python header to the implementation
of the python script interpreter plugin. ScriptInterpreterPython is now
an abstract interface that doesn't expose any Python specific types, and
is implemented by the ScriptInterpreterPythonImpl.

Differential revision: https://reviews.llvm.org/D59976

llvm-svn: 357307

5 years ago[pstl] Qualify calls to internal functions
Louis Dionne [Fri, 29 Mar 2019 20:11:24 +0000 (20:11 +0000)]
[pstl] Qualify calls to internal functions

This guards against unintended ADL issues.
Thanks to Thomas Rogers for the patch.

Differential Revision: https://reviews.llvm.org/D60009

llvm-svn: 357306

5 years ago[LLD][COFF] Improve checkFailIfMismatch()
Alexandre Ganea [Fri, 29 Mar 2019 19:58:58 +0000 (19:58 +0000)]
[LLD][COFF] Improve checkFailIfMismatch()

As suggested by ruiu here (https://reviews.llvm.org/D58910#1425484), defer a call to toString(File) until it's really needed (if there's an error)

Differential Revision: https://reviews.llvm.org/D59411

llvm-svn: 357305

5 years ago[Sema] Avoid sending a dependent expression to the constant evaluator.
Erik Pilkington [Fri, 29 Mar 2019 19:53:41 +0000 (19:53 +0000)]
[Sema] Avoid sending a dependent expression to the constant evaluator.

Fixes llvm.org/PR41286

llvm-svn: 357304

5 years ago[WebAssembly] Handle END_LOOP in unreachable BB in CFGStackify
Heejin Ahn [Fri, 29 Mar 2019 19:36:51 +0000 (19:36 +0000)]
[WebAssembly] Handle END_LOOP in unreachable BB in CFGStackify

Summary:
This fixes crashes when a BB in which an END_LOOP is to be placed is
unreachable and does not have any predecessors. Fixes PR41307.

Reviewers: dschuff

Subscribers: yurydelendik, sbc100, jgravelle-google, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60004

llvm-svn: 357303

5 years agoAMDGPU: Remove dx10-clamp from subtarget features
Matt Arsenault [Fri, 29 Mar 2019 19:14:54 +0000 (19:14 +0000)]
AMDGPU: Remove dx10-clamp from subtarget features

Since this can be set with s_setreg*, it should not be a subtarget
property. Set a default based on the calling convention, and Introduce
a new amdgpu-dx10-clamp attribute to override this if desired.

Also introduce a new amdgpu-ieee attribute to match.

The values need to match to allow inlining. I think it is OK for the
caller's dx10-clamp attribute to override the callee, but there
doesn't appear to be the infrastructure to do this currently without
definining the attribute in the generic Attributes.td.

Eventually the calling convention lowering will need to insert a mode
switch somewhere for these.

llvm-svn: 357302

5 years ago[Hexagon] Remove fcmp undef from reduced tests
Simon Pilgrim [Fri, 29 Mar 2019 19:14:52 +0000 (19:14 +0000)]
[Hexagon] Remove fcmp undef from reduced tests

Pre-commit for D60006 (Add fcmp UNDEF handling to SelectionDAG::FoldSetCC)

Approved by @kparzysz (Krzysztof Parzyszek)

llvm-svn: 357301

5 years ago[X86] Add test cases showing failure to use RMW form of negate when only flags are...
Craig Topper [Fri, 29 Mar 2019 19:09:37 +0000 (19:09 +0000)]
[X86] Add test cases showing failure to use RMW form of negate when only flags are used. NFC

llvm-svn: 357300

5 years ago[DAG] Avoid redundancy in StoreMerge TokenFactor generation.
Nirav Dave [Fri, 29 Mar 2019 18:50:22 +0000 (18:50 +0000)]
[DAG] Avoid redundancy in StoreMerge TokenFactor generation.

Avoid generating redundant TokenFactor when all merged stores have
the same chain.

llvm-svn: 357299

5 years ago[Sema] Fix assertion when `auto` parameter in lambda has an attribute.
Volodymyr Sapsai [Fri, 29 Mar 2019 18:47:07 +0000 (18:47 +0000)]
[Sema] Fix assertion when `auto` parameter in lambda has an attribute.

Fixes the assertion
> no Attr* for AttributedType*
> UNREACHABLE executed at llvm-project/clang/lib/Sema/SemaType.cpp:298!

In `TypeProcessingState::getAttributedType` we put into `AttrsForTypes`
types with `auto` but later in
`TypeProcessingState::takeAttrForAttributedType` we use transformed
types and that's why cannot find `Attr` corresponding to
`AttributedType`.

Fix by keeping `AttrsForTypes` up to date after replacing `AutoType`.

rdar://problem/47689465

Reviewers: rsmith, arphaman, aaron.ballman

Reviewed By: aaron.ballman

Subscribers: jkorous, dexonsmith, jdoerfert, cfe-commits

Differential Revision: https://reviews.llvm.org/D58659

llvm-svn: 357298

5 years ago[X86] Use cached OptForSize in X86ISelDAGToDAG.cpp instead of pulling it from the...
Craig Topper [Fri, 29 Mar 2019 18:36:40 +0000 (18:36 +0000)]
[X86] Use cached OptForSize in X86ISelDAGToDAG.cpp instead of pulling it from the function attribute. NFCI

llvm-svn: 357297

5 years ago[Driver] Use --warn-shared-textrel for Android.
Dan Albert [Fri, 29 Mar 2019 18:34:25 +0000 (18:34 +0000)]
[Driver] Use --warn-shared-textrel for Android.

Android does not allow shared text relocations. Enable the linker
warning to detect them by default.

Reviewers: srhines, pirama

Reviewed By: srhines

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D53344

llvm-svn: 357296

5 years ago[SystemZ] Regenerate double constant comparison test
Simon Pilgrim [Fri, 29 Mar 2019 18:23:08 +0000 (18:23 +0000)]
[SystemZ] Regenerate double constant comparison test

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357295

5 years ago[MIPS] Regenerate double constant comparison test
Simon Pilgrim [Fri, 29 Mar 2019 18:22:18 +0000 (18:22 +0000)]
[MIPS] Regenerate double constant comparison test

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357294

5 years ago[ARM] Regenerate execute-only float comparison tests
Simon Pilgrim [Fri, 29 Mar 2019 18:21:19 +0000 (18:21 +0000)]
[ARM] Regenerate execute-only float comparison tests

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357293

5 years ago[ScriptInterpreterPython] Remove unused field (NFC)
Jonas Devlieghere [Fri, 29 Mar 2019 17:58:07 +0000 (17:58 +0000)]
[ScriptInterpreterPython] Remove unused field (NFC)

The m_lldb_module was initialized but not used.

llvm-svn: 357292

5 years ago[InstCombine] autogenerate complete checks; NFC
Sanjay Patel [Fri, 29 Mar 2019 17:51:39 +0000 (17:51 +0000)]
[InstCombine] autogenerate complete checks; NFC

llvm-svn: 357291

5 years agoVarious fixes and additions to creduce-clang-crash.py
George Burgess IV [Fri, 29 Mar 2019 17:50:43 +0000 (17:50 +0000)]
Various fixes and additions to creduce-clang-crash.py

Some more additions to the script - mainly reducing the clang args after
the creduce run by removing them one by one and seeing if the crash
reproduces. Other things:

- remove the --crash flag when "fatal error" occurs
- fixed to read stack trace functions from the top
- run creduce on a copy of the original file

Patch by Amy Huang!

Differential Revision: https://reviews.llvm.org/D59725

llvm-svn: 357290

5 years ago[AMDGPU] Add an additional Code Object V3 assembler example
Scott Linder [Fri, 29 Mar 2019 17:49:51 +0000 (17:49 +0000)]
[AMDGPU] Add an additional Code Object V3 assembler example

Document the intended use of the `.amdgcn.next_free_{s,v}gpr` in the
context of multiple kernels and functions.

Differential Revision: https://reviews.llvm.org/D59949

llvm-svn: 357289

5 years ago[InstCombine] regenerate test checks; NFC
Sanjay Patel [Fri, 29 Mar 2019 17:47:51 +0000 (17:47 +0000)]
[InstCombine] regenerate test checks; NFC

llvm-svn: 357288

5 years ago[CMake] Move link dependencies where they are used.
Jonas Devlieghere [Fri, 29 Mar 2019 17:47:26 +0000 (17:47 +0000)]
[CMake] Move link dependencies where they are used.

The utility library shouldn't depend on curses, libedit or python. Move
curses to core, libedit to host and python to the python plugin.

Differential revision: https://reviews.llvm.org/D59970

llvm-svn: 357287

5 years ago[AArch64] Regenerate half precision tests
Simon Pilgrim [Fri, 29 Mar 2019 17:46:06 +0000 (17:46 +0000)]
[AArch64] Regenerate half precision tests

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357286

5 years ago[AMDGPU] Switch default DWARF version to 5
Scott Linder [Fri, 29 Mar 2019 17:45:40 +0000 (17:45 +0000)]
[AMDGPU] Switch default DWARF version to 5

Effectively reverts r337612. The issues that cropped up with the last
attempt appear to have gone away.

Differential Revision: https://reviews.llvm.org/D59008

llvm-svn: 357285

5 years ago[llvm][NFC] Factor out logic for getting incoming & back Loop edges
Mircea Trofin [Fri, 29 Mar 2019 17:39:17 +0000 (17:39 +0000)]
[llvm][NFC] Factor out logic for getting incoming & back Loop edges

Reviewers: davidxl

Reviewed By: davidxl

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59967

llvm-svn: 357284

5 years ago[DAGCombine] Prune unnused nodes.
Nirav Dave [Fri, 29 Mar 2019 17:35:56 +0000 (17:35 +0000)]
[DAGCombine] Prune unnused nodes.

Summary:
Nodes that have no uses are eventually pruned when they are selected
from the worklist. Record nodes newly added to the worklist or DAG and
perform pruning after every combine attempt.

Reviewers: efriedma, RKSimon, craig.topper, spatel, jyknight

Reviewed By: jyknight

Subscribers: jdoerfert, jyknight, nemanjai, jvesely, nhaehnle, javed.absar, hiraditya, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58070

llvm-svn: 357283

5 years ago[Cmake] Unify python variables
Jonas Devlieghere [Fri, 29 Mar 2019 17:35:42 +0000 (17:35 +0000)]
[Cmake] Unify python variables

FindPythonInterp and FindPythonLibs do two things, they set some
variables (PYTHON_LIBRARIES, PYTHON_INCLUDE_DIRS) and update the cached
variables (PYTHON_LIBRARY, PYTHON_INCLUDE_DIR) which are also used to
specify a custom python installation.

I believe the canonical way to do this is to use the PYTHON_LIBRARIES
and PYTHON_INCLUDE_DIRS variables instead of the cached ones. However,
since the cached variables are accessible from the cache and GUI, this
is a lot less confusing when you're trying to debug why a variable did
or didn't get the value you expected. Furthermore, as far as I can tell,
the implementation uses the cached variables to set their LIBRARIES/DIRS
counterparts. This is also the reason this works today even though we
mix-and-match.

Differential revision: https://reviews.llvm.org/D59968

llvm-svn: 357282

5 years ago[ARM] Regenerate vector comparison tests
Simon Pilgrim [Fri, 29 Mar 2019 17:35:11 +0000 (17:35 +0000)]
[ARM] Regenerate vector comparison tests

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357281

5 years ago[CodeGen] Refactor the option for the maximum jump table size
Evandro Menezes [Fri, 29 Mar 2019 17:28:11 +0000 (17:28 +0000)]
[CodeGen] Refactor the option for the maximum jump table size

Refactor the option `max-jump-table-size` to default to the maximum
representable number.  Essentially, NFC.

llvm-svn: 357280

5 years ago[DAG] Set up infrastructure to avoid smart constructor-based dangling nodes
Nirav Dave [Fri, 29 Mar 2019 17:26:40 +0000 (17:26 +0000)]
[DAG] Set up infrastructure to avoid smart constructor-based dangling nodes

Summary:
Various SelectionDAG non-combine operations (e.g. the getNode smart
constructor and legalization) may leave dangling nodes by applying
optimizations without fully pruning unused result values. This results
in nodes that are never added to the worklist and therefore can not be
pruned.

Add a node inserter for the combiner to make sure such nodes have the
chance of being pruned. This allows a number of additional peephole
optimizations.

Reviewers: efriedma, RKSimon, craig.topper, jyknight

Reviewed By: jyknight

Subscribers: msearles, jyknight, sdardis, nemanjai, javed.absar, hiraditya, jrtc27, atanasyan, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58068

llvm-svn: 357279

5 years ago[X86] Fix some tests using fcmp with undef arguments
Simon Pilgrim [Fri, 29 Mar 2019 17:20:27 +0000 (17:20 +0000)]
[X86] Fix some tests using fcmp with undef arguments

Prep work for PR40800 (Add UNDEF handling to SelectionDAG::FoldSetCC)

llvm-svn: 357278

5 years ago[Python] Remove readline module
Jonas Devlieghere [Fri, 29 Mar 2019 17:12:08 +0000 (17:12 +0000)]
[Python] Remove readline module

Todd added this empty readline module to workaround an issue with an old
version of Python on Ubuntu in 2014 (18841). In the meantime, libedit
seems to have fixed the underlying issue, and indeed, I wasn't able to
reproduce this.

Differential revision: https://reviews.llvm.org/D59972

llvm-svn: 357277

5 years agoUse the multi-lockable form of std::lock for operator=
Jim Ingham [Fri, 29 Mar 2019 17:07:30 +0000 (17:07 +0000)]
Use the multi-lockable form of std::lock for operator=

For = operators for lists that have mutexes, we were either
just taking the locks sequentially or hand-rolling a trick
to try to avoid lock inversion.  Use the std::lock mechanism
for this instead.

Differential Revision: https://reviews.llvm.org/D59957

llvm-svn: 357276

5 years ago[fuchsia] Add clang-doc to Fuchsia distribution
Julie Hockett [Fri, 29 Mar 2019 16:56:37 +0000 (16:56 +0000)]
[fuchsia] Add clang-doc to Fuchsia distribution

Differential Revision: https://reviews.llvm.org/D5997

llvm-svn: 357275

5 years ago[clang-doc] Build as clang_tool
Julie Hockett [Fri, 29 Mar 2019 16:56:36 +0000 (16:56 +0000)]
[clang-doc] Build as clang_tool

Instead of as clang_executable.

Differential Revision: https://reviews.llvm.org/D59974

llvm-svn: 357274

5 years ago[InstCombine] move shuffle canonicalizations before other transforms
Sanjay Patel [Fri, 29 Mar 2019 16:49:38 +0000 (16:49 +0000)]
[InstCombine] move shuffle canonicalizations before other transforms

This may not be NFC, but I'm not sure how to expose any diffs in
tests. In theory, it should be slightly more efficient and possibly
more profitable to do the canonicalizations (which can increase the
undef elements in the mask) ahead of SimplifyDemandedVectorElts().

llvm-svn: 357272

5 years ago[llvm-readobj] Add some generic notes (e.g. NT_VERSION)
Jordan Rupprecht [Fri, 29 Mar 2019 16:48:19 +0000 (16:48 +0000)]
[llvm-readobj] Add some generic notes (e.g. NT_VERSION)

Summary: Support reading notes that don't have a standard note name.

Reviewers: MaskRay

Reviewed By: MaskRay

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59969

llvm-svn: 357271

5 years ago[llvm-readelf] Allow prefix flags for -p and -x
Jordan Rupprecht [Fri, 29 Mar 2019 16:43:13 +0000 (16:43 +0000)]
[llvm-readelf] Allow prefix flags for -p and -x

Summary: This allows syntax like `llvm-readelf -p.data1 -x.data2`.

Reviewers: jhenderson

Reviewed By: jhenderson

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59965

llvm-svn: 357270

5 years ago[ELF][MachO][wasm] Simplify range-style std::find{,_if} with STLExtras.h utilities...
Fangrui Song [Fri, 29 Mar 2019 16:21:16 +0000 (16:21 +0000)]
[ELF][MachO][wasm] Simplify range-style std::find{,_if} with STLExtras.h utilities. NFC

llvm-svn: 357269

5 years agoDon't abort() in lldb_assert and document why.
Adrian Prantl [Fri, 29 Mar 2019 16:12:27 +0000 (16:12 +0000)]
Don't abort() in lldb_assert and document why.

rdar://problem/49356014

Differential Revision: https://reviews.llvm.org/D59911

llvm-svn: 357268

5 years agoMark fenv.h as a system header before the #include_next directive
Eric Fiselier [Fri, 29 Mar 2019 16:03:57 +0000 (16:03 +0000)]
Mark fenv.h as a system header before the #include_next directive

This fixes a -Wgnu-include-next warning

Patch by dmauro.

llvm-svn: 357267

5 years ago[SLP] Add support for commutative icmp/fcmp predicates
Simon Pilgrim [Fri, 29 Mar 2019 15:28:25 +0000 (15:28 +0000)]
[SLP] Add support for commutative icmp/fcmp predicates

For the cases where the icmp/fcmp predicate is commutative, use reorderInputsAccordingToOpcode to collect and commute the operands.

This requires a helper to recognise commutativity in both general Instruction and CmpInstr types - the CmpInst::isCommutative doesn't overload the Instruction::isCommutative method for reasons I'm not clear on (maybe because its based on predicate not opcode?!?).

Differential Revision: https://reviews.llvm.org/D59992

llvm-svn: 357266

5 years ago[llvm-objcopy] Fix case style of LayoutSegments. NFC
Fangrui Song [Fri, 29 Mar 2019 15:27:58 +0000 (15:27 +0000)]
[llvm-objcopy] Fix case style of LayoutSegments. NFC

llvm-svn: 357265

5 years ago[mips] Fix lowering a signed immediate for *.d MSA instructions
Simon Atanasyan [Fri, 29 Mar 2019 15:15:22 +0000 (15:15 +0000)]
[mips] Fix lowering a signed immediate for *.d MSA instructions

The `lowerMSASplatImm` function zero-extends `i32` immediates while
building constant. If target type is `i64`, negative immediate loses
the sign. As a result, for example `__builtin_msa_ldi_d(-1)` lowered
to series of instruction loads incorrect value 0xffffffff to the `$w0`
register instead of single `ldi.d $w0, -1` instruction.

The fix zero-extends unsigned immediates and signed-extend signed
immediates.

Differential Revision: http://reviews.llvm.org/D59884

llvm-svn: 357264

5 years ago[NFC][llvm-exegesis] Also promote getSchedClassPoint() into ResolvedSchedClass.
Roman Lebedev [Fri, 29 Mar 2019 14:58:01 +0000 (14:58 +0000)]
[NFC][llvm-exegesis] Also promote getSchedClassPoint() into ResolvedSchedClass.

Summary:
It doesn't need anything from Analysis::SchedClassCluster class,
and takes ResolvedSchedClass as param, so this seems rather fitting.

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: tschuett, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59994

llvm-svn: 357263

5 years ago[AMDGPU][MC] Corrected conversion rules for inlinable constants to match rules for...
Dmitry Preobrazhensky [Fri, 29 Mar 2019 14:50:20 +0000 (14:50 +0000)]
[AMDGPU][MC] Corrected conversion rules for inlinable constants to match rules for literals

See bug 40806: https://bugs.llvm.org/show_bug.cgi?id=40806

Reviewers: artem.tamazov, arsenm

Differential Revision: https://reviews.llvm.org/D59786

llvm-svn: 357262

5 years agogn build: Merge r357248
Nico Weber [Fri, 29 Mar 2019 14:31:28 +0000 (14:31 +0000)]
gn build: Merge r357248

llvm-svn: 357261

5 years agogn build: Merge r357259
Nico Weber [Fri, 29 Mar 2019 14:30:01 +0000 (14:30 +0000)]
gn build: Merge r357259

llvm-svn: 357260

5 years ago[NFC][llvm-exegesis] Refactor ResolvedSchedClass & friends
Roman Lebedev [Fri, 29 Mar 2019 14:24:27 +0000 (14:24 +0000)]
[NFC][llvm-exegesis] Refactor ResolvedSchedClass & friends

Summary:
`ResolvedSchedClass` will need to be used outside of `Analysis`
(before `InstructionBenchmarkClustering` even), therefore promote
it into a non-private top-level class, and while there also
move all of the functions that are only called by `ResolvedSchedClass`
into that same new file.

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: mgorny, tschuett, mgrang, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59993

llvm-svn: 357259

5 years ago[DAGCombiner] simplify shuffle of shuffle
Sanjay Patel [Fri, 29 Mar 2019 14:20:38 +0000 (14:20 +0000)]
[DAGCombiner] simplify shuffle of shuffle

After investigating the examples from D59777 targeting an SSE4.1 machine,
it looks like a very different problem due to how we map illegal types (256-bit in these cases).

We're missing a shuffle simplification that maps elements of a vector back to a shuffled operand.
We have a more general version of this transform in DAGCombiner::visitVECTOR_SHUFFLE(), but that
generality means it is limited to patterns with a one-use constraint, and the examples here have
2 uses. We don't need any uses or legality limitations for a simplification (no new value is
created).

It looks like we miss this pattern in IR too.

In one of the zext examples here, we have shuffle masks like this:

Shuf0 = vector_shuffle<0,u,3,7,0,u,3,7>
Shuf = vector_shuffle<4,u,6,7,u,u,u,u>

...so that's moving the high half of the 1st vector into the low half. But the high half of the
1st vector is already identical to the low half.

Differential Revision: https://reviews.llvm.org/D59961

llvm-svn: 357258

5 years agoRecommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."
Florian Hahn [Fri, 29 Mar 2019 14:10:24 +0000 (14:10 +0000)]
Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."

Updated to use DenseMap::insert instead of [] operator for insertion, to
avoid a crash caused by epoch checks.

This reverts commit 2b85de438326f9d27bc96dc934ec98b98abdb337.

llvm-svn: 357257

5 years ago[DAGCombine] Improve Lifetime node chains.
Nirav Dave [Fri, 29 Mar 2019 14:09:47 +0000 (14:09 +0000)]
[DAGCombine] Improve Lifetime node chains.

Improve both start and end lifetime nodes chain dependencies.

Reviewers: courbet

Reviewed By: courbet

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59795

llvm-svn: 357256

5 years agoclang-cl: Expose -fprofile-generate and -fcs-profile-generate (PR41252)
Hans Wennborg [Fri, 29 Mar 2019 14:03:34 +0000 (14:03 +0000)]
clang-cl: Expose -fprofile-generate and -fcs-profile-generate (PR41252)

llvm-svn: 357255

5 years ago[DAGCombiner] fold sext into decrement
Sanjay Patel [Fri, 29 Mar 2019 13:49:08 +0000 (13:49 +0000)]
[DAGCombiner] fold sext into decrement

This is a sibling to rL357178 that I noticed we'd hit if we chose
an alternate transform in D59818.

  %z = zext i8 %x to i32
  %dec = add i32 %z, -1
  %r = sext i32 %dec to i64
  =>
  %z2 = zext i8 %x to i64
  %r = add i64 %z2, -1

https://rise4fun.com/Alive/kPP

The x86 vector diffs show a slight regression, so there's a chance
that we should limit this and the previous transform to scalars.

But given that we allowed vectors before, I'm matching that behavior
here. We should change both transforms together if that's the right
thing to do.

llvm-svn: 357254

5 years agoFix MSVC "not all control paths return a value" warning. NFCI.
Simon Pilgrim [Fri, 29 Mar 2019 13:43:00 +0000 (13:43 +0000)]
Fix MSVC "not all control paths return a value" warning. NFCI.

llvm-svn: 357253

5 years agoSwitch lowering: exploit unreachable fall-through when lowering case range cluster
Hans Wennborg [Fri, 29 Mar 2019 13:40:05 +0000 (13:40 +0000)]
Switch lowering: exploit unreachable fall-through when lowering case range cluster

In the example below, we would previously emit two range checks, one for cases
1--3 and one for 4--6. This patch makes us exploit the fact that the
fall-through is unreachable and only one range check is necessary.

  switch i32 %i, label %default [
    i32 1,  label %bb1
    i32 2,  label %bb1
    i32 3,  label %bb1
    i32 4,  label %bb2
    i32 5,  label %bb2
    i32 6,  label %bb2
  ]
  default: unreachable

llvm-svn: 357252

5 years ago[x86] add tests for decrement+sext; NFC
Sanjay Patel [Fri, 29 Mar 2019 13:34:48 +0000 (13:34 +0000)]
[x86] add tests for decrement+sext; NFC

llvm-svn: 357251

5 years ago[AArch64] Support selecting TPIDR_EL[1-3] as the thread base
Oliver Stannard [Fri, 29 Mar 2019 13:32:41 +0000 (13:32 +0000)]
[AArch64] Support selecting TPIDR_EL[1-3] as the thread base

Add an -mtp=el[0-3] option to select which of the AArch64 thread ID registers
will be used for the TLS base pointer.

This is a followup to rL356657 which added subtarget features to enable
accesses to the privileged thread ID registers.

Patch by Philip Derrin!

Differential revision: https://reviews.llvm.org/D59631

llvm-svn: 357250

5 years ago[AMDGPU][MC] Corrected handling of tied src for atomic return MUBUF opcodes
Dmitry Preobrazhensky [Fri, 29 Mar 2019 12:16:04 +0000 (12:16 +0000)]
[AMDGPU][MC] Corrected handling of tied src for atomic return MUBUF opcodes

See bug 40917: https://bugs.llvm.org/show_bug.cgi?id=40917

Reviewers: artem.tamazov, arsenm

Differential Revision: https://reviews.llvm.org/D59878

llvm-svn: 357249

5 years ago[MCA] Add an experimental MicroOpQueue stage.
Andrea Di Biagio [Fri, 29 Mar 2019 12:15:37 +0000 (12:15 +0000)]
[MCA] Add an experimental MicroOpQueue stage.

This patch adds an experimental stage named MicroOpQueueStage.
MicroOpQueueStage can be used to simulate a hardware micro-op queue (basically,
a decoupling queue between 'decode' and 'dispatch').  Users can specify a queue
size, as well as a optional MaxIPC (which - in the absence of a "Decoders" stage
- can be used to simulate a different throughput from the decoders).

This stage is added to the default pipeline between the EntryStage and the
DispatchStage only if PipelineOption::MicroOpQueue is different than zero. By
default, llvm-mca sets PipelineOption::MicroOpQueue to the value of hidden flag
-micro-op-queue-size.

Throughput from the decoder can be simulated via another hidden flag named
-decoder-throughput.  That flag allows us to quickly experiment with different
frontend throughputs.  For targets that declare a loop buffer, flag
-decoder-throughput allows users to do multiple runs, each time simulating a
different throughput from the decoders.

This stage can/will be extended in future. For example, we could add a "buffer
full" event to notify bottlenecks caused by backpressure. flag
-decoder-throughput would probably go away if in future we delegate to another
stage (DecoderStage?) the simulation of a (potentially variable) throughput from
the decoders. For now, flag -decoder-throughput is "good enough" to run some
simple experiments.

Differential Revision: https://reviews.llvm.org/D59928

llvm-svn: 357248

5 years agoAMDGPU: Make sram-ecc off by default for Vega20
Konstantin Zhuravlyov [Fri, 29 Mar 2019 12:04:18 +0000 (12:04 +0000)]
AMDGPU: Make sram-ecc off by default for Vega20

Differential Revision: https://reviews.llvm.org/D59718

llvm-svn: 357247

5 years ago[llvm-readelf]Merge dynamic and static relocation printing to avoid code duplication
James Henderson [Fri, 29 Mar 2019 11:47:19 +0000 (11:47 +0000)]
[llvm-readelf]Merge dynamic and static relocation printing to avoid code duplication

The majority of the printRelocation and printDynamicRelocation functions
were identical. This patch factors this all out into a new function.
There are a couple of minor differences to do with printing of symbols
without names, but I think these are harmless, and in some cases a small
improvement.

Reviewed by: grimar, rupprecht, Higuoxing

Differential Revision: https://reviews.llvm.org/D59823

llvm-svn: 357246

5 years ago[NFC][llvm-exegesis] Refactor Analysis::SchedClassCluster::measurementsMatch()
Roman Lebedev [Fri, 29 Mar 2019 11:36:08 +0000 (11:36 +0000)]
[NFC][llvm-exegesis] Refactor Analysis::SchedClassCluster::measurementsMatch()

Summary:
The diff looks scary but it really isn't:
1. I moved the check for the number of measurements into `SchedClassClusterCentroid::validate()`
2. While there, added a check that we can only have a single inverse throughput measurement. I missed that when adding it initially.
3. In `Analysis::SchedClassCluster::measurementsMatch()` is called with the current LLVM values from schedule class and the values from Centroid.
3.1. The values from centroid we can already get from `SchedClassClusterCentroid::getAsPoint()`.
     This isn't 100% a NFC, because previously for inverse throughput we used `min()`. I have asked whether i have done that correctly in
     https://reviews.llvm.org/D57647?id=184939#inline-510384 but did not hear back. I think `avg()` should be used too, thus it is a fix.
3.2. Finally, refactor the computation of the LLVM-specified values into `Analysis::SchedClassCluster::getSchedClassPoint()`
     I will need that function for [[ https://bugs.llvm.org/show_bug.cgi?id=41275 | PR41275 ]]

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: tschuett, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59951

llvm-svn: 357245

5 years ago[X86] Add X86TargetLowering::isCommutativeBinOp override.
Simon Pilgrim [Fri, 29 Mar 2019 11:25:58 +0000 (11:25 +0000)]
[X86] Add X86TargetLowering::isCommutativeBinOp override.

We currently just have test coverage for PMULUDQ - will add more in the future.

llvm-svn: 357244

5 years ago[SLP] Add support for swapping icmp/fcmp predicates to permit vectorization
Simon Pilgrim [Fri, 29 Mar 2019 10:41:00 +0000 (10:41 +0000)]
[SLP] Add support for swapping icmp/fcmp predicates to permit vectorization

We should be able to match elements with the swapped predicate as well - as long as we commute the source operands.

Differential Revision: https://reviews.llvm.org/D59956

llvm-svn: 357243

5 years ago[PowerPC] Add the support for __builtin_setrnd() in clang
Kang Zhang [Fri, 29 Mar 2019 09:11:52 +0000 (09:11 +0000)]
[PowerPC] Add the support for __builtin_setrnd() in clang

Summary:
PowerPC64/PowerPC64le supports the builtin function __builtin_setrnd to set the floating point rounding mode. This function will use the least significant two bits of integer argument to set the floating point rounding mode.
double __builtin_setrnd(int mode);
The effective values for mode are:
0 - round to nearest
1 - round to zero
2 - round to +infinity
3 - round to -infinity
Note that the mode argument will modulo 4, so if the int argument is greater than 3, it will only use the least significant two bits of the mode. Namely, builtin_setrnd(102)) is equal to builtin_setrnd(2).

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D59403

llvm-svn: 357242

5 years ago[PowerPC] Add the support for __builtin_setrnd()
Kang Zhang [Fri, 29 Mar 2019 08:45:24 +0000 (08:45 +0000)]
[PowerPC] Add the support for __builtin_setrnd()

Summary:
PowerPC64/PowerPC64le supports the builtin function __builtin_setrnd to set the floating point rounding mode. This function will use the least significant two bits of integer argument to set the floating point rounding mode.
double __builtin_setrnd(int mode);
The effective values for mode are:
0 - round to nearest
1 - round to zero
2 - round to +infinity
3 - round to -infinity
Note that the mode argument will modulo 4, so if the int argument is greater than 3, it will only use the least significant two bits of the mode. Namely, builtin_setrnd(102)) is equal to builtin_setrnd(2).

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D59405

llvm-svn: 357241

5 years ago[Sanitizer] Add interceptor for wctomb
Pavel Labath [Fri, 29 Mar 2019 08:39:03 +0000 (08:39 +0000)]
[Sanitizer] Add interceptor for wctomb

Summary:
This is required to avoid msan false positives for code using this
function (although generally one should avoid using this function in
favor of wcrtomb).

Reviewers: eugenis, EricWF, vitalybuka

Subscribers: srhines, kubamracek, fedor.sergeev, delcypher, llvm-commits, #sanitizers

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D59548

llvm-svn: 357240

5 years ago[ScheduleDAG] Move `Topo` and `addEdge` to base class.
Clement Courbet [Fri, 29 Mar 2019 08:33:05 +0000 (08:33 +0000)]
[ScheduleDAG] Move `Topo` and `addEdge` to base class.

Some DAG mutations can only be applied to `ScheduleDAGMI`, and have to
internally cast a `ScheduleDAGInstrs` to `ScheduleDAGMI`.

There is nothing actually specific to `ScheduleDAGMI` in `Topo`.

llvm-svn: 357239

5 years ago[llvm-objcopy] Delete two redundant reinterpret_cast. NFC
Fangrui Song [Fri, 29 Mar 2019 08:08:20 +0000 (08:08 +0000)]
[llvm-objcopy] Delete two redundant reinterpret_cast. NFC

llvm-svn: 357238

5 years agoTest commit. Fix typo.
Jim Lin [Fri, 29 Mar 2019 05:05:21 +0000 (05:05 +0000)]
Test commit. Fix typo.

llvm-svn: 357237

5 years ago[Sema] Fix a crash when nonnull checking
Michael Liao [Fri, 29 Mar 2019 03:55:52 +0000 (03:55 +0000)]
[Sema] Fix a crash when nonnull checking

Summary:
- If a parameter is used, nonnull checking needs function prototype to
  retrieve the corresponding parameter's attributes. However, at the
  prototype substitution phase when a template is being instantiated,
  expression may be created and checked without a fully specialized
  prototype. Under such a scenario, skip nonnull checking on that
  argument.

Reviewers: rjmccall, tra, yaxunl

Subscribers: javed.absar, kristof.beyls, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59900

llvm-svn: 357236

5 years agoAMDGPU/GlobalISel: Insert waterfall loop for vector indexing
Matt Arsenault [Fri, 29 Mar 2019 03:54:56 +0000 (03:54 +0000)]
AMDGPU/GlobalISel: Insert waterfall loop for vector indexing

The register index can only really be an SGPR. Lie that a VGPR index
is legal, and then rewrite the instruction in a waterfall loop to
handle the index.

llvm-svn: 357235

5 years ago[PowerPC] Strength reduction of multiply by a constant by shift and add/sub in place
Zi Xuan Wu [Fri, 29 Mar 2019 03:08:39 +0000 (03:08 +0000)]
[PowerPC] Strength reduction of multiply by a constant by shift and add/sub in place

A shift and add/sub sequence combination is faster in place of a multiply by constant.
Because the cycle or latency of multiply is not huge, we only consider such following
worthy patterns.

```
(mul x, 2^N + 1) => (add (shl x, N), x)
(mul x, -(2^N + 1)) => -(add (shl x, N), x)
(mul x, 2^N - 1) => (sub (shl x, N), x)
(mul x, -(2^N - 1)) => (sub x, (shl x, N))
```

And the cycles or latency is subtarget-dependent so that we need consider the
subtarget to determine to do or not do such transformation.
Also data type is considered for different cycles or latency to do multiply.

Differential Revision: https://reviews.llvm.org/D58950

llvm-svn: 357233

5 years agogn build: Add check-clang-tools to run clang-tools-extra lit tests
Nico Weber [Fri, 29 Mar 2019 02:49:13 +0000 (02:49 +0000)]
gn build: Add check-clang-tools to run clang-tools-extra lit tests

Only runs the clang-tools-extra lit tests; not yet the unit tests.

Add a build file for clangd-indexer too, since it's needed for
the tests.

Differential Revision: https://reviews.llvm.org/D59955

llvm-svn: 357232

5 years agoAdd .py extension to clang-tools-extra lit cfg files
Nico Weber [Fri, 29 Mar 2019 02:46:31 +0000 (02:46 +0000)]
Add .py extension to clang-tools-extra lit cfg files

Follow-up to r313892, which did this for clang and llvm.

Differential Revision: https://reviews.llvm.org/D59953

llvm-svn: 357231

5 years ago[llvm-readobj] Change variable names to match LLVM-style. NFC.
Xing GUO [Fri, 29 Mar 2019 01:26:36 +0000 (01:26 +0000)]
[llvm-readobj] Change variable names to match LLVM-style. NFC.

Summary: This patch helps change variable names to match LLVM-style

Reviewers: jhenderson, Higuoxing

Reviewed By: Higuoxing

Subscribers: rupprecht, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59931

llvm-svn: 357230

5 years ago[CodeGen][ObjC] Adjust the addresses passed to calls to synthesized
Akira Hatanaka [Fri, 29 Mar 2019 00:23:20 +0000 (00:23 +0000)]
[CodeGen][ObjC] Adjust the addresses passed to calls to synthesized
copy/move constructor/assignment operator functions for non-trivial C
structs.

This commit fixes a bug where the offset of struct fields weren't being
taken into account when computing the addresses passed to calls to the
special functions.

For example, the copy constructor for S1 (__copy_constructor_8_8_s0_s8)
would pass the start addresses of the destination and source structs to
the call to S0's copy constructor (_copy_constructor_8_8_s0) without
adding the offset of field f1 to the addresses.

typedef struct {
  id f0;
  S0 f1;
} S1;

void test(S1 s1) {
  S1 t = s1;
}

rdar://problem/49400610

llvm-svn: 357229

5 years agoFix typos and formatting. NFC.
Akira Hatanaka [Fri, 29 Mar 2019 00:23:17 +0000 (00:23 +0000)]
Fix typos and formatting. NFC.

llvm-svn: 357228

5 years agoRevert Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."
Florian Hahn [Fri, 29 Mar 2019 00:22:26 +0000 (00:22 +0000)]
Revert Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."

Another buildbot failure

http://lab.llvm.org:8011/builders/clang-cmake-x86_64-sde-avx512-linux/builds/20402

clang-9: /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/llvm/include/llvm/ADT/DenseMap.h:1228: llvm::DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConst>::value_type* llvm::DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConst>::operator->() const [with KeyT = const llvm::Instruction*; ValueT = unsigned int; KeyInfoT = llvm::DenseMapInfo<const llvm::Instruction*>; Bucket = llvm::detail::DenseMapPair<const llvm::Instruction*, unsigned int>; bool IsConst = false; llvm::DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConst>::pointer = llvm::detail::DenseMapPair<const llvm::Instruction*, unsigned int>*; llvm::DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConst>::value_type = llvm::detail::DenseMapPair<const llvm::Instruction*, unsigned int>]: Assertion `isHandleInSync() && "invalid iterator access!"' failed.

0. Program arguments: /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/stage1.install/bin/clang-9 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name ArchiveCommandLine.cpp -mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu skylake-avx512 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -coverage-notes-file /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/sandbox/build/MultiSource/Benchmarks/7zip/Output/ArchiveCommandLine.llvm.gcno -resource-dir /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/stage1.install/lib/clang/9.0.0 -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/sandbox/build/MultiSource/Benchmarks/7zip -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/include -I ../../../include -D _GNU_SOURCE -D __STDC_LIMIT_MACROS -D NDEBUG -D BREAK_HANDLER -D UNICODE -D _UNICODE -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip/C -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip/CPP/myWindows -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip/CPP/include_windows -I /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip/CPP -I . -D _FILE_OFFSET_BITS=64 -D _LARGEFILE_SOURCE -D NDEBUG -D _REENTRANT -D ENV_UNIX -D _7ZIP_LARGE_PAGES -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/backward -internal-isystem /usr/local/include -internal-isystem /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/stage1.install/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -std=gnu++98 -fdeprecated-macro -fdebug-compilation-dir /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/sandbox/build/MultiSource/Benchmarks/7zip -ferror-limit 19 -fmessage-length 0 -pthread -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -vectorize-loops -vectorize-slp -o Output/ArchiveCommandLine.llvm.o -x c++ /home/ssglocal/clang-cmake-x86_64-sde-avx512-linux/clang-cmake-x86_64-sde-avx512-linux/test/test-suite/MultiSource/Benchmarks/7zip/CPP/7zip/UI/Common/ArchiveCommandLine.cpp -faddrsig

This reverts r357222 (git commit 64cccfcc72c44ea62f441b782d2177a90912769a)

llvm-svn: 357227

5 years ago[WebAssembly] Merge used feature sets, update atomics linkage policy
Thomas Lively [Fri, 29 Mar 2019 00:14:01 +0000 (00:14 +0000)]
[WebAssembly] Merge used feature sets, update atomics linkage policy

Summary:
It does not currently make sense to use WebAssembly features in some functions
but not others, so this CL adds an IR pass that takes the union of all used
feature sets and applies it to each function in the module. This allows us to
prevent atomics from being lowered away if some function has opted in to using
them. When atomics is not enabled anywhere, we detect whether there exists any
atomic operations or thread local storage that would be stripped and disallow
linking with objects that contain atomics if and only if atomics or tls are
stripped. When atomics is enabled, mark it as used but do not require it of
other objects in the link. These changes allow libraries that do not use atomics
to be built once and linked into both single-threaded and multithreaded
binaries.

Reviewers: aheejin, sbc100, dschuff

Subscribers: jgravelle-google, hiraditya, sunfish, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59625

llvm-svn: 357226

5 years agoRevert "[WebAssembly] Improve invalid relocation error message"
Derek Schuff [Fri, 29 Mar 2019 00:05:00 +0000 (00:05 +0000)]
Revert "[WebAssembly] Improve invalid relocation error message"

This reverts commit 0805ec5f7b5c80474352531a99e721c30e73e77f.

llvm-svn: 357225

5 years agoRevert "[WebAssembly] Improve invalid relocation error message"
Derek Schuff [Fri, 29 Mar 2019 00:04:58 +0000 (00:04 +0000)]
Revert "[WebAssembly] Improve invalid relocation error message"

Also Revert "[WebAssembly] Fix typo from rL357143"

This reverts commit 0805ec5f7b5c80474352531a99e721c30e73e77f and
a9958fc30d0c6d4c140be892c5a824b827d2eb5d
(rL357143 and rL357144)

They cause failures with address-taken extern (JS) functions
in emscripten.

llvm-svn: 357224

5 years agoRemove a duplicate assignment. NFC.
Rui Ueyama [Thu, 28 Mar 2019 23:53:38 +0000 (23:53 +0000)]
Remove a duplicate assignment. NFC.

llvm-svn: 357223

5 years agoRecommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."
Florian Hahn [Thu, 28 Mar 2019 23:11:00 +0000 (23:11 +0000)]
Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock."

Recommitting after addressing a buildbot failure.

This reverts commit c87869ebea000dd6483de7c7451cb36c1d36f866.

llvm-svn: 357222

5 years ago[llvm-readobj] Fix formatting of unknown note types
Jordan Rupprecht [Thu, 28 Mar 2019 23:08:06 +0000 (23:08 +0000)]
[llvm-readobj] Fix formatting of unknown note types

llvm-svn: 357221

5 years ago[MS] Make __iso_volatile_* available on all targets
Reid Kleckner [Thu, 28 Mar 2019 22:59:09 +0000 (22:59 +0000)]
[MS] Make __iso_volatile_* available on all targets

Future versions of MSVC make these intrinsics available on x86 & x64,
according to:
http://lists.llvm.org/pipermail/cfe-dev/2019-March/061711.html

The purpose of these builtins is to emit plain, non-atomic, volatile
stores when /volatile:ms (-cc1 -fms-volatile) is enabled.

llvm-svn: 357220

5 years ago[yaml2obj] Fixing opening empty yaml files.
Puyan Lotfi [Thu, 28 Mar 2019 22:55:08 +0000 (22:55 +0000)]
[yaml2obj] Fixing opening empty yaml files.

Essentially echo "" | yaml2obj crashes. This patch attempts to trim whitespace
and determine if the yaml string in the file is empty or not. If the input is
empty then it will not properly print out an error message and return an error
code.

Differential Revision: https://reviews.llvm.org/D59964

A    test/tools/yaml2obj/empty.yaml
M    tools/yaml2obj/yaml2obj.cpp

llvm-svn: 357219

5 years agoUpdate lit config for ld.lld command to match "ld\.lld" instead of trying to match...
Rumeet Dhindsa [Thu, 28 Mar 2019 22:26:51 +0000 (22:26 +0000)]
Update lit config for ld.lld command to match "ld\.lld" instead of trying to match respective regex. (It was able to work with ld-lld and ld1lld as well)

Differential Revision: https://reviews.llvm.org/D59962

llvm-svn: 357218

5 years ago[LSR] Fix signed overflow in GenerateCrossUseConstantOffsets.
Florian Hahn [Thu, 28 Mar 2019 22:17:29 +0000 (22:17 +0000)]
[LSR] Fix signed overflow in GenerateCrossUseConstantOffsets.

For the attached test case, unchecked addition of immediate starts and
ends overflows, as they can be arbitrary i64 constants.

Proof: https://rise4fun.com/Alive/Plqc

Reviewers: qcolombet, gilr, efriedma

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D59218

llvm-svn: 357217

5 years agoFixed the lld test using ld-lld command to use ld.lld instead.
Rumeet Dhindsa [Thu, 28 Mar 2019 22:14:46 +0000 (22:14 +0000)]
Fixed the lld test using ld-lld command to use ld.lld instead.

Differential Revision: https://reviews.llvm.org/D59962

llvm-svn: 357216

5 years ago[BPF] add proper multi-dimensional array support
Yonghong Song [Thu, 28 Mar 2019 21:59:49 +0000 (21:59 +0000)]
[BPF] add proper multi-dimensional array support

For multi-dimensional array like below
  int a[2][3];
the previous implementation generates BTF_KIND_ARRAY type
like below:
  . element_type: int
  . index_type: unsigned int
  . number of elements: 6

This is not the best way to represent arrays, esp.,
when converting BTF back to headers and users will see
  int a[6];
instead.

This patch generates proper support for multi-dimensional arrays.
For "int a[2][3]", the two BTF_KIND_ARRAY types will be
generated:
  Type #n:
    . element_type: int
    . index_type: unsigned int
    . number of elements: 3
  Type #(n+1):
    . element_type: #n
    . index_type: unsigned int
    . number of elements: 2

The linux kernel already supports such a multi-dimensional
array representation properly.

Signed-off-by: Yonghong Song <yhs@fb.com>
Differential Revision: https://reviews.llvm.org/D59943

llvm-svn: 357215

5 years ago[MC] Fix floating-point literal lexing.
Eli Friedman [Thu, 28 Mar 2019 21:12:28 +0000 (21:12 +0000)]
[MC] Fix floating-point literal lexing.

This patch has three related fixes to improve float literal lexing:

1. Make AsmLexer::LexDigit handle floats without a decimal point more
   consistently.
2. Make AsmLexer::LexFloatLiteral print an error for floats which are
   apparently missing an "e".
3. Make APFloat::convertFromString use binutils-compatible exponent
   parsing.

Together, this fixes some cases where a float would be incorrectly
rejected, fixes some cases where the compiler would crash, and improves
diagnostics in some cases.

Patch by Brandon Jones.

Differential Revision: https://reviews.llvm.org/D57321

llvm-svn: 357214

5 years ago[SelectionDAGBuilder] Fix 80 column violation. NFC
Craig Topper [Thu, 28 Mar 2019 20:52:22 +0000 (20:52 +0000)]
[SelectionDAGBuilder] Fix 80 column violation. NFC

llvm-svn: 357213

5 years ago[InterleavedAccessPass] Don't increase the number of bytes loaded.
Eli Friedman [Thu, 28 Mar 2019 20:44:50 +0000 (20:44 +0000)]
[InterleavedAccessPass] Don't increase the number of bytes loaded.

Even if the interleaving transform would otherwise be legal, we shouldn't
introduce an interleaved load that is wider than the original load: it might
have undefined behavior.

It might be possible to perform some sort of mask-narrowing transform in
some cases (using a narrower interleaved load, then extending the
results using shufflevectors).  But I haven't tried to implement that,
at least for now.

Fixes https://bugs.llvm.org/show_bug.cgi?id=41245 .

Differential Revision: https://reviews.llvm.org/D59954

llvm-svn: 357212