platform/upstream/llvm.git
5 years ago[analyzer] Remove memoization from RunLoopAutoreleaseLeakChecker
George Karpenkov [Tue, 11 Dec 2018 01:14:17 +0000 (01:14 +0000)]
[analyzer] Remove memoization from RunLoopAutoreleaseLeakChecker

Memoization dose not seem to be necessary, as other statement visitors
run just fine without it,
and in fact seems to be causing memory corruptions.
Just removing it instead of investigating the root cause.

rdar://45945002

Differential Revision: https://reviews.llvm.org/D54921

llvm-svn: 348822

5 years ago[analyzer] Hack for backwards compatibility for options for RetainCountChecker.
George Karpenkov [Tue, 11 Dec 2018 01:13:58 +0000 (01:13 +0000)]
[analyzer] Hack for backwards compatibility for options for RetainCountChecker.

To be removed once the clients update.

llvm-svn: 348821

5 years ago[analyzer] Display a diagnostics when an inlined function violates its os_consumed...
George Karpenkov [Tue, 11 Dec 2018 01:13:40 +0000 (01:13 +0000)]
[analyzer] Display a diagnostics when an inlined function violates its os_consumed summary

This is currently a diagnostics, but might be upgraded to an error in the future,
especially if we introduce os_return_on_success attributes.

rdar://46359592

Differential Revision: https://reviews.llvm.org/D55530

llvm-svn: 348820

5 years ago[analyzer] Resolve another bug where the name of the leaked object was not printed...
George Karpenkov [Tue, 11 Dec 2018 01:13:20 +0000 (01:13 +0000)]
[analyzer] Resolve another bug where the name of the leaked object was not printed properly

Differential Revision: https://reviews.llvm.org/D55528

llvm-svn: 348819

5 years ago[WebAssembly] Add '.eventtype' directive support
Heejin Ahn [Tue, 11 Dec 2018 01:11:04 +0000 (01:11 +0000)]
[WebAssembly] Add '.eventtype' directive support

Summary:
This patch supports `.eventtype` directive printing and parsing in the
same syntax with `.functype`.

Reviewers: aardappel, sbc100

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

Differential Revision: https://reviews.llvm.org/D55353

llvm-svn: 348818

5 years ago[TextAPI][elfabi] Make SoName optional
Armando Montanez [Tue, 11 Dec 2018 01:00:16 +0000 (01:00 +0000)]
[TextAPI][elfabi] Make SoName optional

This change makes DT_SONAME treated as an optional trait for ELF TextAPI
stubs. This change accounts for the fact that shared objects aren't
guaranteed to have a DT_SONAME entry. Tests have been updated to check
for correct behavior of an optional soname.

Differential Revision: https://reviews.llvm.org/D55533

llvm-svn: 348817

5 years ago[WebAssembly] TargetStreamer cleanup (NFC)
Heejin Ahn [Tue, 11 Dec 2018 00:53:59 +0000 (00:53 +0000)]
[WebAssembly] TargetStreamer cleanup (NFC)

Summary:
- Unify mixed argument names (`Symbol` and `Sym`) to `Sym`
- Changed `MCSymbolWasm*` argument of `emit***` functions to `const
  MCSymbolWasm*`. It seems not very intuitive that emit function in the
  streamer modifies symbol contents.
- Moved empty function bodies to the header
- clang-format

Reviewers: aardappel, dschuff, sbc100

Subscribers: jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D55347

llvm-svn: 348816

5 years ago[GISel]: Refactor MachineIRBuilder to allow passing additional parameters to build...
Aditya Nandakumar [Tue, 11 Dec 2018 00:48:50 +0000 (00:48 +0000)]
[GISel]: Refactor MachineIRBuilder to allow passing additional parameters to build Instrs

https://reviews.llvm.org/D55294

Previously MachineIRBuilder::buildInstr used to accept variadic
arguments for sources (which were either unsigned or
MachineInstrBuilder). While this worked well in common cases, it doesn't
allow us to build instructions that have multiple destinations.
Additionally passing in other optional parameters in the end (such as
flags) is not possible trivially. Also a trivial call such as

B.buildInstr(Opc, Reg1, Reg2, Reg3)
can be interpreted differently based on the opcode (2defs + 1 src for
unmerge vs 1 def + 2srcs).
This patch refactors the buildInstr to

buildInstr(Opc, ArrayRef<DstOps>, ArrayRef<SrcOps>)
where DstOps and SrcOps are typed unions that know how to add itself to
MachineInstrBuilder.
After this patch, most invocations would look like

B.buildInstr(Opc, {s32, DstReg}, {SrcRegs..., SrcMIBs..});
Now all the other calls (such as buildAdd, buildSub etc) forward to
buildInstr. It also makes it possible to build instructions with
multiple defs.
Additionally in a subsequent patch, we should make it possible to add
flags directly while building instructions.
Additionally, the main buildInstr method is now virtual and other
builders now only have to override buildInstr (for say constant
folding/cseing) is straightforward.

Also attached here (https://reviews.llvm.org/F7675680) is a clang-tidy
patch that should upgrade the API calls if necessary.

llvm-svn: 348815

5 years agoFollow-up fix to r348811 for null Errors (which is the case for end iterators)
David Blaikie [Tue, 11 Dec 2018 00:17:36 +0000 (00:17 +0000)]
Follow-up fix to r348811 for null Errors (which is the case for end iterators)

Not sure how I missed that in my testing, but obvious enough - this
causes segfaults when attempting to dereference the Error in end
iterators.

llvm-svn: 348814

5 years agoFix undefined behavior in Variable.h
Zachary Turner [Tue, 11 Dec 2018 00:15:03 +0000 (00:15 +0000)]
Fix undefined behavior in Variable.h

m_loc_is_constant_data was uninitialized, so unless someone
explicitly called SetLocIsConstantData(), this would be UB.

I think every existing call-site would always call the proper
function to initialize the value, so there were no existing
bugs, but I encountered this when I tried to use it without
calling this function and encountered this.

llvm-svn: 348813

5 years agoAdd a version of std::function that includes a few optimizations in ABI V2.
Eric Fiselier [Tue, 11 Dec 2018 00:14:34 +0000 (00:14 +0000)]
Add a version of std::function that includes a few optimizations in ABI V2.

Patch by Jordan Soyke (jsoyke@google.com)
Reviewed as D55045

The result of running the benchmarks and comparing them can be found
here: https://gist.github.com/EricWF/a77fd42ec87fc98da8039e26d0349498

llvm-svn: 348812

5 years agollvm-objcopy: Improve/simplify llvm::Error handling during notes iteration
David Blaikie [Tue, 11 Dec 2018 00:09:06 +0000 (00:09 +0000)]
llvm-objcopy: Improve/simplify llvm::Error handling during notes iteration

Using an Error as an out parameter from an indirect operation like
iteration as described in the documentation (
http://llvm.org/docs/ProgrammersManual.html#building-fallible-iterators-and-iterator-ranges
) seems to be a little fussy - so here's /one/ possible solution, though
I'm not sure it's the right one.

Alternatively such APIs may be better off being switched to a standard
algorithm style, where they take a lambda to do the iteration work that
is then called back into (eg: "Error e = obj.for_each_note([](const
Note& N) { ... });"). This would be safer than having an unwritten
assumption that the user of such an iteration cannot return early from
the inside of the function - and must always exit through the gift
shop... I mean error checking. (even though it's guaranteed that if
you're mid-way through processing an iteration, it's not in an  error
state).

Alternatively we'd need some other (the super untrustworthy/thing we've
generally tried to avoid) error handling primitive that actually clears
the error state entirely so it's safe to ignore.

Fleshed this solution out a bit further during review - it now relies on
op==/op!= comparison as the equivalent to "if (Err)" testing the Error.
So just like an Error must be checked (even if it's in a success state),
the Error hiding in the iterator must be checked after each increment
(including by comparison with another iterator - perhaps this could be
constrained to only checking if the iterator is compared to the end
iterator? Not sure it's too important).

So now even just creating the iterator and not incrementing it at all
should still assert because the Error has not been checked.

Reviewers: lhames, jakehehrlich

Differential Revision: https://reviews.llvm.org/D55235

llvm-svn: 348811

5 years ago[DataFormatters] Fixes to libc++ std::function formatter to deal with ABI change see
Shafik Yaghmour [Mon, 10 Dec 2018 23:26:38 +0000 (23:26 +0000)]
[DataFormatters] Fixes to libc++ std::function formatter to deal with ABI change see

    https://reviews.llvm.org/D55045

llvm-svn: 348810

5 years agoUpdate test for instcombine change
Matt Arsenault [Mon, 10 Dec 2018 23:02:40 +0000 (23:02 +0000)]
Update test for instcombine change

llvm-svn: 348809

5 years agoRewrite pexpect-based test in LIT/FileCheck.
Adrian Prantl [Mon, 10 Dec 2018 22:57:47 +0000 (22:57 +0000)]
Rewrite pexpect-based test in LIT/FileCheck.

pexecpt-based tests are flakey because they involve timeouts and this
test is eprfectly serializable.

llvm-svn: 348808

5 years ago[builtins] Remove trailing whitespaces, NFC
Yi Kong [Mon, 10 Dec 2018 22:52:59 +0000 (22:52 +0000)]
[builtins] Remove trailing whitespaces, NFC

Remove trailing whitespaces so that it is easier to diff the code between
div{s,d,t}f3.c

llvm-svn: 348807

5 years agodebuginfo: Use symbol difference for CU length to simplify assembly reading/editing
David Blaikie [Mon, 10 Dec 2018 22:44:48 +0000 (22:44 +0000)]
debuginfo: Use symbol difference for CU length to simplify assembly reading/editing

Mucking about simplifying a test case ( https://reviews.llvm.org/D55261 ) I stumbled across something I've hit before - that LLVM's (GCC's does too, FWIW) assembly output includes a hardcode length for a DWARF unit in its header. Instead we could emit a label difference - making the assembly easier to read/edit (though potentially at a slight (I haven't tried to observe it) performance cost of delaying/sinking the length computation into the MC layer).

Reviewers: JDevlieghere, probinson, ABataev

Differential Revision: https://reviews.llvm.org/D55281

llvm-svn: 348806

5 years agoReflow a multi-line string and add a newline
Frederic Riss [Mon, 10 Dec 2018 22:30:19 +0000 (22:30 +0000)]
Reflow a multi-line string and add a newline

llvm-svn: 348805

5 years ago[Local] Promote an utility that could be used elsewhere. NFCI.
Davide Italiano [Mon, 10 Dec 2018 22:17:04 +0000 (22:17 +0000)]
[Local] Promote an utility that could be used elsewhere. NFCI.

llvm-svn: 348804

5 years agoFix LLVM_LINK_LLVM_DYLIB build of TapiTests
Sam Clegg [Mon, 10 Dec 2018 22:01:33 +0000 (22:01 +0000)]
Fix LLVM_LINK_LLVM_DYLIB build of TapiTests

A dependency on TestingSupport was introduced in rL348735 but
library was not incldued in the LLVM_LINK_LLVM_DYLIB build.

Differential Revision: https://reviews.llvm.org/D55526

llvm-svn: 348803

5 years ago[Hexagon] Couple of fixes in optimize addressing mode
Krzysztof Parzyszek [Mon, 10 Dec 2018 21:56:04 +0000 (21:56 +0000)]
[Hexagon] Couple of fixes in optimize addressing mode

- Check if an operand is an immediate before calling getImm. Some operands
  that take constant values can actually have global symbols or other
  constant expressions.
- When a load-constant instruction can be folded into users, make sure to
  only delete it when all users have been successfully converted.

llvm-svn: 348802

5 years agoInstCombine: Scalarize single use icmp/fcmp
Matt Arsenault [Mon, 10 Dec 2018 21:50:54 +0000 (21:50 +0000)]
InstCombine: Scalarize single use icmp/fcmp

llvm-svn: 348801

5 years ago[InstCombine] add tests for movmsk (PR39927) NFC
Sanjay Patel [Mon, 10 Dec 2018 21:44:20 +0000 (21:44 +0000)]
[InstCombine] add tests for movmsk (PR39927) NFC

llvm-svn: 348800

5 years agoRevert "Change InitListExpr dump to label and pointer"
Stephen Kelly [Mon, 10 Dec 2018 21:20:05 +0000 (21:20 +0000)]
Revert "Change InitListExpr dump to label and pointer"

This reverts commit r348794.

llvm-svn: 348799

5 years agoFix nits
Stephen Kelly [Mon, 10 Dec 2018 21:04:04 +0000 (21:04 +0000)]
Fix nits

llvm-svn: 348798

5 years agoRe-order content of template parameter dumps
Stephen Kelly [Mon, 10 Dec 2018 21:03:00 +0000 (21:03 +0000)]
Re-order content of template parameter dumps

Reviewers: aaron.ballman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55393

llvm-svn: 348797

5 years ago[Targets] Fixup incorrect targets in codemodel tests
David Green [Mon, 10 Dec 2018 20:55:34 +0000 (20:55 +0000)]
[Targets] Fixup incorrect targets in codemodel tests

llvm-svn: 348796

5 years agoRe-order content in OMPDeclareReductionDecl dump
Stephen Kelly [Mon, 10 Dec 2018 20:53:39 +0000 (20:53 +0000)]
Re-order content in OMPDeclareReductionDecl dump

Reviewers: aaron.ballman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55395

llvm-svn: 348795

5 years agoChange InitListExpr dump to label and pointer
Stephen Kelly [Mon, 10 Dec 2018 20:53:32 +0000 (20:53 +0000)]
Change InitListExpr dump to label and pointer

Summary: Don't add a child just for the label.

Reviewers: aaron.ballman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55495

llvm-svn: 348794

5 years ago[clang-tidy] insert release notes for new checkers alphabetically
Jonas Toth [Mon, 10 Dec 2018 19:41:53 +0000 (19:41 +0000)]
[clang-tidy]  insert release notes for new checkers alphabetically

Summary:
Almost all code review comments on new checkers {D55433} {D48866} {D54349} seem to ask for the release notes to be added alphabetically, plus I've seen commits by @Eugene.Zelenko reordering the lists

Make add_new_check.py add those release notes alphabetically based on checker name

If include-fixer section is seen add it at the end

Minor change in the message format to prevent double newlines added before the checker.

Do the tools themselves have unit tests? (sorry new to this game)

- Tested adding new checker at the beginning
- Tested on adding new checker in the middle
- Tested on empty ReleasesNotes.rst (as we would see after RC)

Patch by MyDeveloperDay.

Reviewers: alexfh, JonasToth, curdeius, aaron.ballman, benhamilton, hokein

Reviewed By: JonasToth

Subscribers: cfe-commits, xazax.hun, Eugene.Zelenko

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D55508

llvm-svn: 348793

5 years agoRevert "[Hexagon] Check if operand is an immediate before getImm"
Krzysztof Parzyszek [Mon, 10 Dec 2018 19:30:08 +0000 (19:30 +0000)]
Revert "[Hexagon] Check if operand is an immediate before getImm"

This reverts r348787. The patch wasn't quite correct.

llvm-svn: 348792

5 years agoAPFloat: allow 64-bit of payload
JF Bastien [Mon, 10 Dec 2018 19:27:38 +0000 (19:27 +0000)]
APFloat: allow 64-bit of payload

Summary: The APFloat and Constant APIs taking an APInt allow arbitrary payloads,
and that's great. There's a convenience API which takes an unsigned, and that's
silly because it then directly creates a 64-bit APInt. Just change it to 64-bits
directly.

At the same time, add ConstantFP NaN getters which match the APFloat ones (with
getQNaN / getSNaN and APInt parameters).

Improve the APFloat testing to set more payload bits.

Reviewers: scanon, rjmccall

Subscribers: jkorous, dexonsmith, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D55460

llvm-svn: 348791

5 years agoAdd an explicit triple to this test to fix failing test bots.
Aaron Ballman [Mon, 10 Dec 2018 19:18:11 +0000 (19:18 +0000)]
Add an explicit triple to this test to fix failing test bots.

llvm-svn: 348790

5 years ago[constexpr][c++2a] Try-catch blocks in constexpr functions
Bruno Cardoso Lopes [Mon, 10 Dec 2018 19:03:12 +0000 (19:03 +0000)]
[constexpr][c++2a] Try-catch blocks in constexpr functions

Implement support for try-catch blocks in constexpr functions, as
proposed in http://wg21.link/P1002 and voted in San Diego for c++20.

The idea is that we can still never throw inside constexpr, so the catch
block is never entered. A try-catch block like this:

try { f(); } catch (...) { }

is then morally equivalent to just

{ f(); }

Same idea should apply for function/constructor try blocks.

rdar://problem/45530773

Differential Revision: https://reviews.llvm.org/D55097

llvm-svn: 348789

5 years ago[GlobalISel] Restrict G_MERGE_VALUES capability and replace with new opcodes.
Amara Emerson [Mon, 10 Dec 2018 18:44:58 +0000 (18:44 +0000)]
[GlobalISel] Restrict G_MERGE_VALUES capability and replace with new opcodes.

This patch restricts the capability of G_MERGE_VALUES, and uses the new
G_BUILD_VECTOR and G_CONCAT_VECTORS opcodes instead in the appropriate places.

This patch also includes AArch64 support for selecting G_BUILD_VECTOR of <4 x s32>
and <2 x s64> vectors.

Differential Revisions: https://reviews.llvm.org/D53629

llvm-svn: 348788

5 years ago[Hexagon] Check if operand is an immediate before getImm
Krzysztof Parzyszek [Mon, 10 Dec 2018 18:39:47 +0000 (18:39 +0000)]
[Hexagon] Check if operand is an immediate before getImm

llvm-svn: 348787

5 years agoAdding tests for -ast-dump; NFC.
Aaron Ballman [Mon, 10 Dec 2018 18:37:47 +0000 (18:37 +0000)]
Adding tests for -ast-dump; NFC.

This adds tests for expressions in C.

llvm-svn: 348786

5 years ago[Hexagon] Add patterns for any_extend from i1 and short vectors of i1
Krzysztof Parzyszek [Mon, 10 Dec 2018 18:36:06 +0000 (18:36 +0000)]
[Hexagon] Add patterns for any_extend from i1 and short vectors of i1

llvm-svn: 348785

5 years ago[TargetLowering] Add UNDEF folding to SimplifyDemandedVectorElts
Simon Pilgrim [Mon, 10 Dec 2018 18:29:46 +0000 (18:29 +0000)]
[TargetLowering] Add UNDEF folding to SimplifyDemandedVectorElts

If all the demanded elements of the SimplifyDemandedVectorElts are known to be UNDEF, we can simplify to an ISD::UNDEF node.

Zero constant folding will be handled in a future patch - its a little trickier as we often have bitcasted zero values.

Differential Revision: https://reviews.llvm.org/D55511

llvm-svn: 348784

5 years ago[OpenMP] Fix a few build issues
Jonathan Peyton [Mon, 10 Dec 2018 18:26:50 +0000 (18:26 +0000)]
[OpenMP] Fix a few build issues

Fix two build issues:

1) Recent commit 348756 accidentally included Unix clang compilers
   to use immintrin.h when only clang-cl should be using it leading
   to the following error:

openmp-llvm/runtime/src/kmp_lock.cpp:2035:25: error: always_
inline function '_xbegin' requires target feature 'rtm', but would be inlined into function
      '__kmp_test_adaptive_lock_only' that is compiled without support for 'rtm'
          kmp_uint32 status = _xbegin();
This patch changes the guard to use immintrin.h to only use clang-cl instead of all clang

2) gcc-8 gives a warning about multiline comment in kmp_runtime.cpp:
This patch just changes it to a two line comment
openmp-llvm/runtime/src/kmp_runtime.cpp:7697:8: warning: multi-line comment [-Wcomment]
 #endif // KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD  \

llvm-svn: 348783

5 years ago[docs] Add the new Objective-C ARC intrinsics to the LangRef.
Erik Pilkington [Mon, 10 Dec 2018 18:19:43 +0000 (18:19 +0000)]
[docs] Add the new Objective-C ARC intrinsics to the LangRef.

These were added in r348441. This mostly just points to the clang documentation
to describe the intended semantics of each intrinsic.

llvm-svn: 348782

5 years ago[DAGCombiner] Remove unnecessary recursive DAGCombiner::visitINSERT_SUBVECTOR call.
Simon Pilgrim [Mon, 10 Dec 2018 18:18:50 +0000 (18:18 +0000)]
[DAGCombiner] Remove unnecessary recursive DAGCombiner::visitINSERT_SUBVECTOR call.

As discussed on D55511, this caused an issue if the inner node deletes a node that the outer node depends upon. As it doesn't affect any lit-tests and I've only been able to expose this with the D55511 change I'm committing this now.

llvm-svn: 348781

5 years agoFix r348773
Pavel Labath [Mon, 10 Dec 2018 18:17:53 +0000 (18:17 +0000)]
Fix r348773

It's not sufficient to implement the CreateMemoryInstance function, one
has to use it too.

llvm-svn: 348780

5 years ago[Host] Use FileSystem wrapper
Jonas Devlieghere [Mon, 10 Dec 2018 18:17:39 +0000 (18:17 +0000)]
[Host] Use FileSystem wrapper

Fixes Host.mm to use the FileSystem class instead of making native calls
to check if a file exists.

llvm-svn: 348779

5 years agoRefactor std::function to more easily support alternative implementations.
Eric Fiselier [Mon, 10 Dec 2018 18:14:09 +0000 (18:14 +0000)]
Refactor std::function to more easily support alternative implementations.

Patch from Jordan Soyke (jsoyke@google.com)
Reviewed as D55520

This change adds a new internal class, called __value_func, that adds
a minimal subset of value-type semantics to the internal __func interface.

The change is NFC, and is cleanup for the upcoming ABI v2 function implementation (D55045).

llvm-svn: 348778

5 years agoComputeLineNumbers: delete SSE2 vectorization
Fangrui Song [Mon, 10 Dec 2018 18:10:35 +0000 (18:10 +0000)]
ComputeLineNumbers: delete SSE2 vectorization

Summary:
SSE2 vectorization was added in 2012, but it is 2018 now and I can't
observe any performance boost (testing clang -E [all Sema/* CodeGen/* with proper -I options]) with the existing _mm_movemask_epi8+countTrailingZeros or the following SSE4.2 (compiling with -msse4.2):

  __m128i C = _mm_setr_epi8('\r','\n',0,0,0,0,0,0,0,0,0,0,0,0,0,0);
  _mm_cmpestri(C, 2, Chunk, 16, _SIDD_UBYTE_OPS | _SIDD_CMP_EQUAL_ANY | _SIDD_POSITIVE_POLARITY | _SIDD_LEAST_SIGNIFICANT)

Delete the vectorization to simplify the code.

Also simplify the code a bit and don't check the line ending sequence \n\r

Reviewers: bkramer, #clang

Reviewed By: bkramer

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55484

llvm-svn: 348777

5 years ago[x86] fix formatting; NFC
Sanjay Patel [Mon, 10 Dec 2018 17:23:44 +0000 (17:23 +0000)]
[x86] fix formatting; NFC

This should really be generalized to allow increment and/or
we should replace it by using ISD::matchUnaryPredicate().
See D55515 for context.

llvm-svn: 348776

5 years agoDo not use PATH_MAX with SmallString
Stella Stamenova [Mon, 10 Dec 2018 17:23:28 +0000 (17:23 +0000)]
Do not use PATH_MAX with SmallString

Summary: Instead use a more reasonable value to start and rely on the fact that SmallString will resize if necessary.

Reviewers: labath, asmith

Reviewed By: labath

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D55457

llvm-svn: 348775

5 years ago[AArch64] Refactor the Exynos scheduling predicates
Evandro Menezes [Mon, 10 Dec 2018 17:17:26 +0000 (17:17 +0000)]
[AArch64] Refactor the Exynos scheduling predicates

Refactor the scheduling predicates based on `MCInstPredicate`.  In this
case, for the Exynos processors.

Differential revision: https://reviews.llvm.org/D55345

llvm-svn: 348774

5 years agoRe-commit "Introduce ObjectFileBreakpad"
Pavel Labath [Mon, 10 Dec 2018 17:16:38 +0000 (17:16 +0000)]
Re-commit "Introduce ObjectFileBreakpad"

This re-commits r348592, which was reverted due to a failing test on
macos.

The issue was that I was passing a null pointer for the
"CreateMemoryInstance" callback when registering ObjectFileBreakpad,
which caused crashes when attemping to load modules from memory. The
correct thing to do is to pass a callback which always returns a null
pointer (as breakpad files are never loaded in inferior memory).

It turns out that there is only one test which exercises this code path,
and it's mac-only, so I've create a new test which should run everywhere
(except windows, as one cannot delete an executable which is being run).
Unfortunately, this test still fails on linux for other reasons, but at
least it gives us something to aim for.

The original commit message was:
This patch adds the scaffolding necessary for lldb to recognise symbol
files generated by breakpad. These (textual) files contain just enough
information to be able to produce a backtrace from a crash
dump. This information includes:
- UUID, architecture and name of the module
- line tables
- list of symbols
- unwind information

A minimal breakpad file could look like this:
MODULE Linux x86_64 0000000024B5D199F0F766FFFFFF5DC30 a.out
INFO CODE_ID 00000000B52499D1F0F766FFFFFF5DC3
FILE 0 /tmp/a.c
FUNC 1010 10 0 _start
1010 4 4 0
1014 5 5 0
1019 5 6 0
101e 2 7 0
PUBLIC 1010 0 _start
STACK CFI INIT 1010 10 .cfa: $rsp 8 + .ra: .cfa -8 + ^
STACK CFI 1011 $rbp: .cfa -16 + ^ .cfa: $rsp 16 +
STACK CFI 1014 .cfa: $rbp 16 +

Even though this data would normally be considered "symbol" information,
in the current lldb infrastructure it is assumed every SymbolFile object
is backed by an ObjectFile instance. So, in order to better interoperate
with the rest of the code (particularly symbol vendors).

In this patch I just parse the breakpad header, which is enough to
populate the UUID and architecture fields of the ObjectFile interface.
The rough plan for followup patches is to expose the individual parts of
the breakpad file as ObjectFile "sections", which can then be used by
other parts of the codebase (SymbolFileBreakpad ?) to vend the necessary
information.

Reviewers: clayborg, zturner, lemo, amccarth

Subscribers: mgorny, fedor.sergeev, markmentovai, lldb-commits

Differential Revision: https://reviews.llvm.org/D55214

llvm-svn: 348773

5 years ago[OPENMP][NVPTX]Revert __kmpc_shuffle_int64 to its original form.
Alexey Bataev [Mon, 10 Dec 2018 16:50:36 +0000 (16:50 +0000)]
[OPENMP][NVPTX]Revert __kmpc_shuffle_int64 to its original form.

Summary:
Use the original shuffle implementation for __kmpc_shuffle_int64 since
default implementation uses the same implementation.

Reviewers: gtbercea

Subscribers: guansong, caomhin, openmp-commits

Differential Revision: https://reviews.llvm.org/D55514

llvm-svn: 348772

5 years ago[AMDGPU] Change the l1 flush instruction for AMDPAL/MESA3D.
Neil Henning [Mon, 10 Dec 2018 16:35:53 +0000 (16:35 +0000)]
[AMDGPU] Change the l1 flush instruction for AMDPAL/MESA3D.

This commit changes which l1 flush instruction is used for AMDPAL and
MESA3d workloads to flush the entire l1 cache instead of just the
volatile lines.

Differential Revision: https://reviews.llvm.org/D55367

llvm-svn: 348771

5 years ago[Sanitizer] expand sysctl/getmntinfo/nl_langinfo to Darwin
David Carlier [Mon, 10 Dec 2018 16:29:30 +0000 (16:29 +0000)]
[Sanitizer] expand sysctl/getmntinfo/nl_langinfo to Darwin

Reviewers: vitalybuka, krytarowski, kubamracek

Reviewed By: vitalybuka, krytarowski

Differential Revision: https://reviews.llvm.org/D55473

llvm-svn: 348770

5 years ago[x86] add tests for LowerVSETCC with min/max; NFC
Sanjay Patel [Mon, 10 Dec 2018 16:28:30 +0000 (16:28 +0000)]
[x86] add tests for LowerVSETCC with min/max; NFC

llvm-svn: 348769

5 years ago[AArch64] Refactor the scheduling predicates
Evandro Menezes [Mon, 10 Dec 2018 16:24:30 +0000 (16:24 +0000)]
[AArch64] Refactor the scheduling predicates

Refactor the scheduling predicates based on `MCInstPredicate`.  Augment the
number of helper predicates used by processor specific predicates.

Differential revision: https://reviews.llvm.org/D55375

llvm-svn: 348768

5 years ago[AMDGPU] Add new Mode Register pass - minor fix
Tim Corringham [Mon, 10 Dec 2018 16:23:30 +0000 (16:23 +0000)]
[AMDGPU] Add new Mode Register pass - minor fix

Trivial change to add parentheses to an expression to avoid a
sanitizer error in SIModeRegister.cpp, which was committed earlier.

llvm-svn: 348767

5 years ago[llvm-mca] Add new tests for Exynos (NFC)
Evandro Menezes [Mon, 10 Dec 2018 16:22:29 +0000 (16:22 +0000)]
[llvm-mca] Add new tests for Exynos (NFC)

llvm-svn: 348766

5 years ago[DAGCombiner] Simplify test case from r348759
Francis Visoiu Mistrih [Mon, 10 Dec 2018 16:04:56 +0000 (16:04 +0000)]
[DAGCombiner] Simplify test case from r348759

Thanks Simon for pointing that out.

llvm-svn: 348765

5 years ago[libclang] Revert removal of tidy plugin support from libclang introduced in r347496
Ivan Donchevskii [Mon, 10 Dec 2018 15:58:50 +0000 (15:58 +0000)]
[libclang] Revert removal of tidy plugin support from libclang introduced in r347496

Differential Revision: https://reviews.llvm.org/D55415

llvm-svn: 348764

5 years ago[AVX512] Update typo in comment
Cameron McInally [Mon, 10 Dec 2018 15:21:35 +0000 (15:21 +0000)]
[AVX512] Update typo in comment

Should be "Sae" for "Suppress All Exceptions".

NFC

llvm-svn: 348763

5 years agoUse zip_longest for iterator range comparisons. NFC.
Michael Kruse [Mon, 10 Dec 2018 15:16:37 +0000 (15:16 +0000)]
Use zip_longest for iterator range comparisons. NFC.

Use zip_longest in two locations that compare iterator ranges.
zip_longest allows the iteration using a range-based for-loop and to be
symmetric over both ranges instead of prioritizing one over the other.
In that latter case code have to handle the case that the first is
longer than the second, the second is longer than the first, and both
are of the same length, which must partially be checked after the loop.

With zip_longest, this becomes an element comparison within the loop
like the comparison of the elements themselves. The symmetry makes it
clearer that neither the first and second iterators are handled
differently. The iterators are not event used directly anymore, just
the ranges.

Differential Revision: https://reviews.llvm.org/D55468

llvm-svn: 348762

5 years ago[GlobalISel] Set stack protector index when translating Intrinsic::stackprotector
Petr Pavlu [Mon, 10 Dec 2018 15:15:05 +0000 (15:15 +0000)]
[GlobalISel] Set stack protector index when translating Intrinsic::stackprotector

Record the stack protector index in MachineFrameInfo when translating
Intrinsic::stackprotector similarly as is done by SelectionDAG when
processing the same intrinsic.

Setting this index allows the Prologue/Epilogue Insertion to recognize
that the stack protection is enabled. The pass can then make sure that
the stack protector comes before local variables on the stack and
assigns potentially vulnerable objects first so they are close to the
stack protector slot.

Differential Revision: https://reviews.llvm.org/D55418

llvm-svn: 348761

5 years ago[mips][mc] Emit R_{MICRO}MIPS_JALR when expanding jal to jalr
Vladimir Stefanovic [Mon, 10 Dec 2018 15:07:36 +0000 (15:07 +0000)]
[mips][mc] Emit R_{MICRO}MIPS_JALR when expanding jal to jalr

When replacing jal with jalr, also emit '.reloc R_MIPS_JALR' (R_MICROMIPS_JALR
for micromips). The linker might then be able to turn jalr into a direct
call.
Add '-mips-jalr-reloc' to enable/disable this feature (default is true).

Differential revision: https://reviews.llvm.org/D55292

llvm-svn: 348760

5 years ago[DAGCombiner] Use the result value type in visitCONCAT_VECTORS
Francis Visoiu Mistrih [Mon, 10 Dec 2018 14:31:34 +0000 (14:31 +0000)]
[DAGCombiner] Use the result value type in visitCONCAT_VECTORS

This triggers an assert when combining concat_vectors of a bitcast of
merge_values.

With asserts disabled, it fails to select:
fatal error: error in backend: Cannot select: 0x7ff19d000e90: i32 = any_extend 0x7ff19d000ae8
  0x7ff19d000ae8: f64,ch = CopyFromReg 0x7ff19d000c20:1, Register:f64 %1
    0x7ff19d000b50: f64 = Register %1
In function: d

Differential Revision: https://reviews.llvm.org/D55507

llvm-svn: 348759

5 years ago[OPENMP][NVPTX]Enable fast shuffles on 64bit values only if CUDA >= 9.
Alexey Bataev [Mon, 10 Dec 2018 14:29:05 +0000 (14:29 +0000)]
[OPENMP][NVPTX]Enable fast shuffles on 64bit values only if CUDA >= 9.

Summary:
Shuffle on 64bit data is allowed only for CUDA >= 9.0. Also, fixed the
constant for the mask, need one extra L in the end.

Reviewers: gtbercea, kkwli0

Subscribers: guansong, caomhin, openmp-commits

Differential Revision: https://reviews.llvm.org/D55440

llvm-svn: 348758

5 years ago[NFC][AArch64] Remove duplicate Arch list in target parser tests
David Spickett [Mon, 10 Dec 2018 14:26:06 +0000 (14:26 +0000)]
[NFC][AArch64] Remove duplicate Arch list in target parser tests

The list generated in the target parser tests is the
same as the one in the AArch64 target parser.
Use that one instead.

Differential Revision: https://reviews.llvm.org/D55509

llvm-svn: 348757

5 years agoSupport clang compiling under windows-gnu and windows-msvc
Andrey Churbanov [Mon, 10 Dec 2018 13:45:00 +0000 (13:45 +0000)]
Support clang compiling under windows-gnu and windows-msvc

Patch by Peiyuan Song <squallatf@gmail.com>

Differential Revision: https://reviews.llvm.org/D53422

llvm-svn: 348756

5 years agoMisc typos fixes in ./lib folder
Raphael Isemann [Mon, 10 Dec 2018 12:37:46 +0000 (12:37 +0000)]
Misc typos fixes in ./lib folder

Summary: Found via `codespell -q 3 -I ../clang-whitelist.txt -L uint,importd,crasher,gonna,cant,ue,ons,orign,ned`

Reviewers: teemperor

Reviewed By: teemperor

Subscribers: teemperor, jholewinski, jvesely, nhaehnle, whisperity, jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D55475

llvm-svn: 348755

5 years ago[AMDGPU] Add new Mode Register pass
Tim Corringham [Mon, 10 Dec 2018 12:06:10 +0000 (12:06 +0000)]
[AMDGPU] Add new Mode Register pass

A new pass to manage the Mode register.

Currently this just manages the floating point double precision
rounding requirements, but is intended to be easily extended to
encompass all Mode register settings.

The immediate motivation comes from the requirement to use the
round-to-zero rounding mode for the 16 bit interpolation
instructions, where the rounding mode setting is shared between
16 and 64 bit operations.

llvm-svn: 348754

5 years ago[DebugInfo] Don't drop dbg.value's of nullptr
Jeremy Morse [Mon, 10 Dec 2018 12:04:08 +0000 (12:04 +0000)]
[DebugInfo] Don't drop dbg.value's of nullptr

Currently, dbg.value's of "nullptr" are dropped when entering a SelectionDAG --
apparently just because of an oversight when recognising Values that are
constant (see PR39787). This patch adds ConstantPointerNull to the list of
constants that can be turned into DBG_VALUEs.

The matter of what bit-value a null pointer constant in LLVM has was raised
in this mailing list thread:

  http://lists.llvm.org/pipermail/llvm-dev/2018-December/128234.html

Where it transpires LLVM relies on (IR) null pointers being zero valued,
thus I've baked this assumption into the patch.

Differential Revision: https://reviews.llvm.org/D55227

llvm-svn: 348753

5 years ago[OpenCL][CodeGen] Fix replacing memcpy with addrspacecast
Andrew Savonichev [Mon, 10 Dec 2018 12:03:00 +0000 (12:03 +0000)]
[OpenCL][CodeGen] Fix replacing memcpy with addrspacecast

Summary:
If a function argument is byval and RV is located in default or alloca address space
an optimization of creating addrspacecast instead of memcpy is performed. That is
not correct for OpenCL, where that can lead to a situation of address space casting
from __private * to __global *. See an example below:

```
typedef struct {
  int x;
} MyStruct;

void foo(MyStruct val) {}

kernel void KernelOneMember(__global MyStruct* x) {
  foo (*x);
}
```

for this code clang generated following IR:
...
%0 = load %struct.MyStruct addrspace(1)*, %struct.MyStruct addrspace(1)**
%x.addr, align 4
%1 = addrspacecast %struct.MyStruct addrspace(1)* %0 to %struct.MyStruct*
...

So the optimization was disallowed for OpenCL if RV is located in an address space
different than that of the argument (0).

Reviewers: yaxunl, Anastasia

Reviewed By: Anastasia

Subscribers: cfe-commits, asavonic

Differential Revision: https://reviews.llvm.org/D54947

llvm-svn: 348752

5 years ago[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out
Jeremy Morse [Mon, 10 Dec 2018 11:20:47 +0000 (11:20 +0000)]
[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out

This is a fix for PR39896, where dbg.value's of SDNodes that have been
optimised out do not lead to "DBG_VALUE undef" instructions being created.
Such undef instructions are necessary to terminate earlier variable
ranges, otherwise variable values leak past the point where they're valid.

The "invalidated" flag of SDDbgValue is currently being abused to mean two
things:
 * The corresponding SDNode is now invalid
 * This SDDbgValue should not be emitted
Of which there are several legitimate combinations of meaning:
 * The SDNode has been invalidated and we should emit "DBG_VALUE undef"
 * The SDNode has been invalidated but the debug data was salvaged, don't
   emit anything for this SDDbgValue
 * This SDDbgValue has been emitted

This patch introduces distinct "Emitted" and "Invalidated" fields to the
SDDbgValue class, updates users accordingly, and generates "undef"
DBG_VALUEs for invalidated records. Awkwardly, there are circumstances
where we emit SDDbgValue's twice, specifically DebugInfo/X86/dbg-addr-dse.ll
which I've preserved.

Differential Revision: https://reviews.llvm.org/D55372

llvm-svn: 348751

5 years ago[X86] Fix AvoidStoreForwardingBlocks pass for negative displacements
Nikita Popov [Mon, 10 Dec 2018 10:16:50 +0000 (10:16 +0000)]
[X86] Fix AvoidStoreForwardingBlocks pass for negative displacements

Fixes https://bugs.llvm.org/show_bug.cgi?id=39926.

The size of the first copy was computed as
std::abs(std::abs(LdDisp2) - std::abs(LdDisp1)), which results in
skipped bytes if the signs of LdDisp2 and LdDisp1 differ. As far as
I can see, this should just be LdDisp2 - LdDisp1. The case where
LdDisp1 > LdDisp2 is already handled in the code above, in which case
LdDisp2 is set to LdDisp1 and this subtraction will evaluate to
Size1 = 0, which is the correct value to skip an overlapping copy.

Differential Revision: https://reviews.llvm.org/D55485

llvm-svn: 348750

5 years ago[LLD][ELF] - Support discarding the .dynamic section.
George Rimar [Mon, 10 Dec 2018 09:24:49 +0000 (09:24 +0000)]
[LLD][ELF] - Support discarding the .dynamic section.

This is a part of https://bugs.llvm.org/show_bug.cgi?id=39810.

Seems it turns out that supporting /DISCARD/ for the .dynamic section with the
linker script is something we can do easily. The patch does this.

Differential revision: https://reviews.llvm.org/D55211

llvm-svn: 348749

5 years ago[ELF] - Allow discarding .dynsym from the linker script.
George Rimar [Mon, 10 Dec 2018 09:13:36 +0000 (09:13 +0000)]
[ELF] - Allow discarding .dynsym from the linker script.

This is a part of https://bugs.llvm.org/show_bug.cgi?id=39810.
The patch allows discarding the .dynsym section using linker script.

Differential revision: https://reviews.llvm.org/D55218

llvm-svn: 348748

5 years agoAdd data types needed for md2(3)/NetBSD interceptors
Kamil Rytarowski [Mon, 10 Dec 2018 09:09:18 +0000 (09:09 +0000)]
Add data types needed for md2(3)/NetBSD interceptors

Missing part of D55469.

llvm-svn: 348747

5 years ago[LLD][ELF] - Support discarding .dynstr section.
George Rimar [Mon, 10 Dec 2018 09:07:30 +0000 (09:07 +0000)]
[LLD][ELF] - Support discarding .dynstr section.

This is a part of https://bugs.llvm.org/show_bug.cgi?id=39810.
The patch allows discarding the .dynstr section using linker script.

Differential revision: https://reviews.llvm.org/D55215

llvm-svn: 348746

5 years agoAdd interceptors for the sha2(3) from NetBSD
Kamil Rytarowski [Mon, 10 Dec 2018 09:06:56 +0000 (09:06 +0000)]
Add interceptors for the sha2(3) from NetBSD

Summary:
SHA224_Init, SHA224_Update, SHA224_Final, SHA224_End, SHA224_File,
SHA224_FileChunk, SHA224_Data, SHA256_Init, SHA256_Update, SHA256_Final,
SHA256_End, SHA256_File, SHA256_FileChunk, SHA256_Data, SHA384_Init,
SHA384_Update, SHA384_Final, SHA384_End, SHA384_File, SHA384_FileChunk,
SHA384_Data, SHA512_Init, SHA512_Update, SHA512_Final, SHA512_End,
SHA512_File, SHA512_FileChunk, SHA512_Data – calculates the NIST Secure
Hash Standard (version 2)

Add tests for new interceptors.

Reviewers: vitalybuka, joerg

Reviewed By: vitalybuka

Subscribers: kubamracek, llvm-commits, mgorny, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D54987

llvm-svn: 348745

5 years agoAdd interceptors for md2(3) from NetBSD
Kamil Rytarowski [Mon, 10 Dec 2018 09:01:00 +0000 (09:01 +0000)]
Add interceptors for md2(3) from NetBSD

Summary:
MD2Init, MD2Update, MD2Final, MD2End, MD2File, MD2Data - calculates the
RSA Data Security, Inc., "MD2" message digest.

Add a dedicated test.

Reviewers: vitalybuka, joerg

Reviewed By: vitalybuka

Subscribers: kubamracek, llvm-commits, mgorny, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D55469

llvm-svn: 348744

5 years agoAdd new interceptors for FILE repositioning stream
Kamil Rytarowski [Mon, 10 Dec 2018 08:56:14 +0000 (08:56 +0000)]
Add new interceptors for FILE repositioning stream

Summary:
Add new interceptors for a set of functions to reposition a stream:
fgetpos, fseek, fseeko, fsetpos, ftell, ftello, rewind .

Add a dedicated test.

Enable this interface on NetBSD.

Reviewers: joerg, vitalybuka

Reviewed By: vitalybuka

Subscribers: kubamracek, llvm-commits, mgorny, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D55471

llvm-svn: 348743

5 years agoRevert r348741 "[Sema] Further improvements to to static_assert diagnostics."
Clement Courbet [Mon, 10 Dec 2018 08:53:17 +0000 (08:53 +0000)]
Revert r348741 "[Sema] Further improvements to to static_assert diagnostics."

Seems to break build bots.

llvm-svn: 348742

5 years ago[Sema] Further improvements to to static_assert diagnostics.
Clement Courbet [Mon, 10 Dec 2018 08:19:38 +0000 (08:19 +0000)]
[Sema] Further improvements to to static_assert diagnostics.

Summary:
We're now handling cases like `static_assert(!expr)` and
static_assert(!(expr))`.

Reviewers: aaron.ballman, Quuxplusone

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D55270

llvm-svn: 348741

5 years ago[llvm-exegesis] Also check latency mode in local lit.
Clement Courbet [Mon, 10 Dec 2018 07:29:47 +0000 (07:29 +0000)]
[llvm-exegesis] Also check latency mode in local lit.

Summary: This should avoid failing on old CPUs that do not have a cycle counter.

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D55416

llvm-svn: 348740

5 years ago[CostModel][X86][AArch64] Adjust cost of the scalarization part of min/max reduction.
Craig Topper [Mon, 10 Dec 2018 06:58:58 +0000 (06:58 +0000)]
[CostModel][X86][AArch64] Adjust cost of the scalarization part of min/max reduction.

Summary: The comment says we need 3 extracts and a select at the end. But didn't we just account for the select in the vector cost above. Aren't we just extracting the single element after taking the min/max in the vector register?

Reviewers: RKSimon, spatel, ABataev

Reviewed By: RKSimon

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

Differential Revision: https://reviews.llvm.org/D55480

llvm-svn: 348739

5 years ago[X86] Remove the addcarry builtins. Leaving only the addcarryx builtins since that...
Craig Topper [Mon, 10 Dec 2018 06:07:59 +0000 (06:07 +0000)]
[X86] Remove the addcarry builtins. Leaving only the addcarryx builtins since that matches gcc.

The addcarry and addcarryx builtins do the same thing. The only difference is that addcarryx previously required adx feature.

This commit removes the adx feature check from addcarryx and removes the addcarry builtin. This matches the builtins that gcc has. We don't guarantee compatibility in builtins, but we generally try to be consistent if its not a burden.

llvm-svn: 348738

5 years ago[X86] Merge addcarryx/addcarry intrinsic into a single addcarry intrinsic.
Craig Topper [Mon, 10 Dec 2018 06:07:50 +0000 (06:07 +0000)]
[X86] Merge addcarryx/addcarry intrinsic into a single addcarry intrinsic.

Both intrinsics do the exact same thing so we really only need one.

Earlier in the 8.0 cycle we changed the signature of this intrinsic without renaming it. But it looks difficult to get the autoupgrade code to allow me to merge the intrinsics and change the signature at the same time. So I've renamed the intrinsic slightly for the new merged intrinsic. I'm skipping autoupgrading from the previous new to 8.0 signature. I've also renamed the subborrow for consistency.

llvm-svn: 348737

5 years ago[TextAPI][elfabi] Fix build by adding std::move() to r348735
Armando Montanez [Mon, 10 Dec 2018 03:05:58 +0000 (03:05 +0000)]
[TextAPI][elfabi] Fix build by adding std::move() to r348735

llvm-svn: 348736

5 years ago[TextAPI][elfabi] Make TBE handlers functions that return Errors
Armando Montanez [Mon, 10 Dec 2018 02:36:33 +0000 (02:36 +0000)]
[TextAPI][elfabi] Make TBE handlers functions that return Errors

Since TBEHandler doesn't maintain state or otherwise have any need to be
a class right now, the read and write functions have been moved out and
turned into standalone functions. Additionally, the TBE read function
has been updated to return an Expected value for better error handling.
Tests have been updated to reflect these changes.

Differential Revision: https://reviews.llvm.org/D55450

llvm-svn: 348735

5 years ago[bugpoint] Find 'opt', etc., in bugpoint directory
Brian Gesiak [Mon, 10 Dec 2018 00:56:13 +0000 (00:56 +0000)]
[bugpoint] Find 'opt', etc., in bugpoint directory

Summary:
When bugpoint attempts to find the other executables it needs to run,
such as `opt` or `clang`, it tries searching the user's PATH. However,
in many cases, the 'bugpoint' executable is part of an LLVM build, and
the 'opt' executable it's looking for is in that same directory.

Many LLVM tools handle this case by using the `Paths` parameter of
`llvm::sys::findProgramByName`, passing the parent path of the currently
running executable. Do this same thing for bugpoint. However, to
preserve the current behavior exactly, first search the user's PATH,
and then search for 'opt' in the directory containing 'bugpoint'.

Test Plan:
`check-llvm`. Many of the existing bugpoint tests no longer need to use the
`--opt-command` option as a result of these changes.

Reviewers: MatzeB, silvas, davide

Reviewed By: MatzeB, davide

Subscribers: davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D54884

llvm-svn: 348734

5 years agoRe-commit "[IR] Add NODISCARD to attribute functions"
Brian Gesiak [Sun, 9 Dec 2018 22:36:07 +0000 (22:36 +0000)]
Re-commit "[IR] Add NODISCARD to attribute functions"

Now that https://reviews.llvm.org/D55435 is committed,
https://reviews.llvm.org/D55217 can be committed once again -- all warnings are
now fixed.

llvm-svn: 348733

5 years ago[AMDGPU] Fix discarded result of addAttribute
Brian Gesiak [Sun, 9 Dec 2018 21:56:50 +0000 (21:56 +0000)]
[AMDGPU] Fix discarded result of addAttribute

Summary:
`llvm::AttributeList` and `llvm::AttributeSet` are immutable, and so methods
defined on these classes, such as `addAttribute`, return a new immutable
object with the attribute added. In https://reviews.llvm.org/D55217 I attempted
to annotate methods such as `addAttribute` with `LLVM_NODISCARD`, since
calling these methods has no side-effects, and so ignoring the result
that is returned is almost certainly a programmer error.

However, committing the change resulted in new warnings in the AMDGPU target.
The AMDGPU simplify libcalls pass added in https://reviews.llvm.org/D36436
attempts to add the readonly and nounwind attributes to simplified
library functions, but instead calls the `addAttribute` methods and
ignores the result.

Modify the simplify libcalls pass to actually add the nounwind and
readonly attributes. Also update the simplify libcalls test to assert
that these attributes are actually being set.

Reviewers: rampitec, vpykhtin, rnk

Reviewed By: rampitec

Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D55435

llvm-svn: 348732

5 years agoSpeculatively fixing the build; it seems add_pointer_t and add_const_t are not implem...
Aaron Ballman [Sun, 9 Dec 2018 20:04:54 +0000 (20:04 +0000)]
Speculatively fixing the build; it seems add_pointer_t and add_const_t are not implemented everywhere.

llvm-svn: 348731

5 years agoMove the make_const_ptr trait into STLExtras; use add_pointer where possible; NFC.
Aaron Ballman [Sun, 9 Dec 2018 19:53:24 +0000 (19:53 +0000)]
Move the make_const_ptr trait into STLExtras; use add_pointer where possible; NFC.

llvm-svn: 348730

5 years agoAdding an STL-like type trait that is duplicated in multiple places in Clang.
Aaron Ballman [Sun, 9 Dec 2018 19:53:15 +0000 (19:53 +0000)]
Adding an STL-like type trait that is duplicated in multiple places in Clang.

This trait is used by several AST visitor classes to control whether the AST is visiting const nodes or non-const nodes. These uses cannot be easily replaced with the STL traits directly due to use of an unspecialized templated when a type is expected (due to the template template parameter involved).

llvm-svn: 348729

5 years ago[X86] Add some comments about when some X86 intrinsic autoupgrade code was added.
Craig Topper [Sun, 9 Dec 2018 18:02:40 +0000 (18:02 +0000)]
[X86] Add some comments about when some X86 intrinsic autoupgrade code was added.

Someday we'd like to remove old autoupgrade code so it helps to annotate how long its been there so we don't have to go digging through commit history.

llvm-svn: 348728

5 years ago[X86] If the carry input to an addcarry/subborrow intrinsic is known to be 0, emit...
Craig Topper [Sun, 9 Dec 2018 18:02:37 +0000 (18:02 +0000)]
[X86] If the carry input to an addcarry/subborrow intrinsic is known to be 0, emit a flag setting ADD/SUB instead of ADC/SBB.

Previously we had to take the carry in and add -1 to it to set the carry flag so we could use it with ADC/SBB. But if we know its 0 then we don't need to bother.

This should go a long way towards fixing PR24545.

llvm-svn: 348727

5 years agoAdd OpenBSD support to OpenMP
Kamil Rytarowski [Sun, 9 Dec 2018 16:46:48 +0000 (16:46 +0000)]
Add OpenBSD support to OpenMP

Summary: This patch permits OpenMP to build and work (with both gcc and clang) on OpenBSD. It mostly follows what was done for FreeBSD and NetBSD, except OpenBSD does not have pthread_getattr_np support, so it follows OS X in that one instance.

Reviewers: #openmp, krytarowski

Reviewed By: krytarowski

Subscribers: guansong, jfb, emaste, mgorny, krytarowski, #openmp

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D34280

llvm-svn: 348726

5 years agoAdd DragonFlyBSD support to OpenMP
Kamil Rytarowski [Sun, 9 Dec 2018 16:40:33 +0000 (16:40 +0000)]
Add DragonFlyBSD support to OpenMP

Summary:
Additions mostly follow FreeBSD and NetBSD and are not intrusive.
There is similar patch for OpenBSD: https://reviews.llvm.org/D34280

The -lm was being omitted due to -Wl,--as-needed in cmake rule, similar patch is in freebsd-ports/devel/llvm-devel port.

Simple OpenMP programs compile and work as expected:
$ clang-devel ~/omp_hello.c -fopenmp -I/usr/local/llvm-devel/include
$ LD_LIBRARY_PATH=/usr/local/llvm-devel/lib OMP_NUM_THREADS=100 ./a.out

The assertion in LLVMgold.so when -fopenmp was used together with -flto in 20170524 snapshot is no longer triggered on current svn-trunk and works fine as in llvm-4.0 with our local patches.

Reviewers: #openmp, krytarowski

Reviewed By: krytarowski

Subscribers: dexonsmith, jfb, krytarowski, guansong, gregrodgers, emaste, mgorny, mehdi_amini

Differential Revision: https://reviews.llvm.org/D35129

llvm-svn: 348725

5 years agoRemove unneeded dependency from lib/Target/X86/Utils/ to lib/IR (aka Core).
Nico Weber [Sun, 9 Dec 2018 15:15:13 +0000 (15:15 +0000)]
Remove unneeded dependency from lib/Target/X86/Utils/ to lib/IR (aka Core).

The dependency was added in r213995 in response to r213986 which did make
X86/Utils depend on IR, but r256680 later removed that dependency again.

llvm-svn: 348724

5 years ago[x86] regenerate test checks; NFC
Sanjay Patel [Sun, 9 Dec 2018 14:47:53 +0000 (14:47 +0000)]
[x86] regenerate test checks; NFC

llvm-svn: 348723