platform/upstream/llvm.git
4 years ago[LTO][Legacy] Eliminate an unused member of llvm::LTOModule. NFC.
Igor Kudrin [Thu, 15 Oct 2020 13:51:02 +0000 (20:51 +0700)]
[LTO][Legacy] Eliminate an unused member of llvm::LTOModule. NFC.

This is a follow-up for D62935 where the corresponding API methods were removed.

Differential Revision: https://reviews.llvm.org/D89472

4 years ago[Driver] Clean up -gz & --compress-debug-sections
Fangrui Song [Tue, 20 Oct 2020 06:05:26 +0000 (23:05 -0700)]
[Driver] Clean up -gz & --compress-debug-sections

* Make cc1 and cc1as --compress-debug-sections an alias for --compress-debug-sections=zlib
* Make -gz an alias for -gz=zlib

The new behavior is consistent with GCC when binutils>=2.26 is detected:
-gz is translated to --compress-debug-sections=zlib instead of --compress-debug-sections.

4 years ago[sanitizer] Fix compilation on older systems
Vitaly Buka [Tue, 20 Oct 2020 05:44:34 +0000 (22:44 -0700)]
[sanitizer] Fix compilation on older systems

Fixes https://bugs.llvm.org/show_bug.cgi?id=47896

4 years agoAdding new Azul representative to security group
Artur Pilipenko [Tue, 20 Oct 2020 05:39:32 +0000 (22:39 -0700)]
Adding new Azul representative to security group

Adding myself as a new Azul representative to security group.

Differential Revision: https://reviews.llvm.org/D89287

4 years ago[mlir][Python] Add python binding to create DenseElementsAttribute.
Stella Laurenzo [Tue, 20 Oct 2020 05:29:35 +0000 (22:29 -0700)]
[mlir][Python] Add python binding to create DenseElementsAttribute.

* Interops with Python buffers/numpy arrays to create.
* Also cleans up 'get' factory methods on some types to be consistent.
* Adds mlirAttributeGetType() to C-API to facilitate error handling and other uses.
* Punts on a lot of features of the ElementsAttribute hierarchy for now.
* Does not yet support bool or string attributes.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D89363

4 years ago[gcov] Unify driver and CC1 option names for -ftest-coverage & -fprofile-arcs
Fangrui Song [Tue, 20 Oct 2020 05:17:32 +0000 (22:17 -0700)]
[gcov] Unify driver and CC1 option names for -ftest-coverage & -fprofile-arcs

No need to use -femit-coverage-notes and -femit-coverage-data.

4 years ago[COFF][ARM] Fix CodeView for Windows on 32bit ARM targets.
Luqman Aden [Tue, 20 Oct 2020 05:10:27 +0000 (22:10 -0700)]
[COFF][ARM] Fix CodeView for Windows on 32bit ARM targets.

Create the LLVM / CodeView register mappings for the 32-bit ARM Window targets.

Reviewed By: compnerd

Differential Revision: https://reviews.llvm.org/D89622

4 years ago[NPM][PFOProfile] Fix some tests under NPM
Arthur Eubanks [Tue, 20 Oct 2020 05:05:01 +0000 (22:05 -0700)]
[NPM][PFOProfile] Fix some tests under NPM

4 years agoUse LLVM_TOOLCHAIN_UTILITIES to allow utils to be installed in the toolchain
Jonas Devlieghere [Tue, 20 Oct 2020 04:54:46 +0000 (21:54 -0700)]
Use LLVM_TOOLCHAIN_UTILITIES to allow utils to be installed in the toolchain

Make it possible to specify a list of utilities that should be installed
in the toolchain.

Differential revision: https://reviews.llvm.org/D89762

4 years ago[gcov] Delete CC1 option -test-coverage
Fangrui Song [Tue, 20 Oct 2020 04:33:47 +0000 (21:33 -0700)]
[gcov] Delete CC1 option -test-coverage

The name is unfortunate because it is similar to the driver option -ftest-coverage.
It turns out aside from one occurrence in a test, this option is not used.

4 years ago[FileCollector] Move interface into FileCollectorBase (NFC)
Jonas Devlieghere [Mon, 19 Oct 2020 21:29:59 +0000 (14:29 -0700)]
[FileCollector] Move interface into FileCollectorBase (NFC)

For the reproducers in LLDB we want to switch to an "immediate mode"
FileCollector that writes every file encountered straight to disk so we
can generate the actual mapping out-of-process. This patch moves the
interface into a separate base class.

Differential revision: https://reviews.llvm.org/D89742

4 years ago[SCEV] Recommit "Use nw flag and symbolic iteration count to sharpen ranges of AddRec...
Max Kazantsev [Mon, 19 Oct 2020 11:15:39 +0000 (18:15 +0700)]
[SCEV] Recommit "Use nw flag and symbolic iteration count to sharpen ranges of AddRecs", attempt 2

Fixed wrapping range case & proof methods reduced to constant range
checks to save compile time.

Differential Revision: https://reviews.llvm.org/D89381

4 years agoRefactor tracking of constant initializers for variables.
Richard Smith [Tue, 20 Oct 2020 04:29:13 +0000 (21:29 -0700)]
Refactor tracking of constant initializers for variables.

Instead of framing the interface around whether the variable is an ICE
(which is only interesting in C++98), primarily track whether the
initializer is a constant initializer (which is interesting in all C++
language modes).

No functionality change intended.

4 years ago[NPM][StackSafetyAnalysis] Pin uses of -analyze to legacy PM
Arthur Eubanks [Tue, 20 Oct 2020 04:24:03 +0000 (21:24 -0700)]
[NPM][StackSafetyAnalysis] Pin uses of -analyze to legacy PM

Tests already have corresponding NPM RUN lines.

4 years ago[PowerPC] Add test case for missing `nsw` flag. NFC.
Kai Luo [Tue, 20 Oct 2020 03:43:59 +0000 (03:43 +0000)]
[PowerPC] Add test case for missing `nsw` flag. NFC.

4 years ago[IRCE] Do not transform if loop has small number of iterations
Serguei Katkov [Fri, 16 Oct 2020 07:23:02 +0000 (14:23 +0700)]
[IRCE] Do not transform if loop has small number of iterations

IRCE has some overhead for runtime checks and in case number of iteration is small
the overhead can kill the benefit from optimizations.

This CL bases on BlockFrequencyInfo of pre-header and header to estimate the
number of loop iterations. If it is less than irce-min-estimated-iters we do not transform the loop.

Probably it is better to make more complex cost model but for simplicity it seems the be enough.

The usage of BFI is added only for new pass manager and tries to use it efficiently.

Reviewers: ebrevnov, dantrushin, asbirlea, mkazantsev
Reviewed By: mkazantsev
Subscribers: llvm-commits, fhahn
Differential Revision: https://reviews.llvm.org/D89541

4 years agoAdd llvm_unreachable to avoid MSVC warning
Geoffrey Martin-Noble [Tue, 20 Oct 2020 02:20:16 +0000 (19:20 -0700)]
Add llvm_unreachable to avoid MSVC warning

Without this I get a warning about not all paths returning.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D89760

4 years agoFixup clang-tidy after recent Clang change.
Richard Smith [Tue, 20 Oct 2020 03:13:35 +0000 (20:13 -0700)]
Fixup clang-tidy after recent Clang change.

4 years ago[ORC] Remove commented out methods accidentally left in in 069919c9ba3.
Lang Hames [Tue, 20 Oct 2020 02:53:38 +0000 (19:53 -0700)]
[ORC] Remove commented out methods accidentally left in in 069919c9ba3.

Thanks for spotting this Mehdi!

4 years ago[DAGCombiner] Tighten reasscociation of visitFMA
Qiu Chaofan [Tue, 20 Oct 2020 02:13:01 +0000 (10:13 +0800)]
[DAGCombiner] Tighten reasscociation of visitFMA

From LangRef, FMF contract should not enable reassociating to form
arbitrary contractions. So it should not help rearrange nodes like
(fma (fmul x, c1), c2, y) into (fma x, c1*c2, y).

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D89527

4 years agoEnsure that checkInitIsICE is called exactly once for every variable
Richard Smith [Tue, 20 Oct 2020 02:01:48 +0000 (19:01 -0700)]
Ensure that checkInitIsICE is called exactly once for every variable
for which it matters.

This is a step towards separating checking for a constant initializer
(in which std::is_constant_evaluated returns true) and any other
evaluation of a variable initializer (in which it returns false).

4 years agoRevert "Reland "[Modules] Add stats to measure performance of building and loading...
Volodymyr Sapsai [Tue, 20 Oct 2020 01:25:35 +0000 (18:25 -0700)]
Revert "Reland "[Modules] Add stats to measure performance of building and loading modules.""

This reverts commit 4000c9ee18ecebe3ff0f197af8c1fb434ad986e5.

Test "LLVM :: Other/statistic.ll" is failing on Windows.

4 years ago[X86] Fix assert fail when element type is i1.
Wang, Pengfei [Tue, 20 Oct 2020 00:58:22 +0000 (08:58 +0800)]
[X86] Fix assert fail when element type is i1.

extract_vector_elt will turn type vxi1 into i8, which triggers the assertion fail.
Since we don't really handle vxi1 cases in below code, we can just return from here.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D89096

4 years agoAdd option to use older clang ABI behavior when passing certain union types as functi...
Douglas Yung [Tue, 20 Oct 2020 01:17:34 +0000 (18:17 -0700)]
Add option to use older clang ABI behavior when passing certain union types as function arguments

Recently commit D78699 (commit 26cfb6e562f1), fixed clang's behavior with respect
to passing a union type through a register to correctly follow the ABI. However,
this is an ABI breaking change with earlier versions of the clang compiler, so we
should add an -fclang-abi-compat option to address this. Additionally, the PS4 ABI
requires the older behavior, so that is added as well.

This change adds a Ver11 value to the ClangABI enum that when it is set (or the
target is the PS4 triple), we skip the ABI fix introduced in D78699.

Differential Revision: https://reviews.llvm.org/D89747

4 years ago[GWP-ASan] Cleanup (NFC)
Kostya Kortchinsky [Mon, 19 Oct 2020 18:54:43 +0000 (11:54 -0700)]
[GWP-ASan] Cleanup (NFC)

Cleaning up some of the GWP-ASan code base:
- lots of headers didn't have the correct file name
- adding `#ifdef` guard to `utilities.h`
- correcting an `#ifdef` guard based on actual file name
- removing an extra `;`
- clang-format'ing the code (`-style=llvm`)

Differential Revision: https://reviews.llvm.org/D89721

4 years agoclang/Lex: Stop using SourceManager::getBuffer
Duncan P. N. Exon Smith [Wed, 14 Oct 2020 16:37:19 +0000 (12:37 -0400)]
clang/Lex: Stop using SourceManager::getBuffer

Update clang/lib/Lex to stop relying on a `MemoryBuffer*`, using the
`MemoryBufferRef` from `getBufferOrNone` since both locations had logic
for checking validity of the buffer. There's potentially a functionality
change, since the logic was wrong (it checked for `nullptr`, which was
never returned by the old API), but if that was reachable the new
behaviour should be better.

Differential Revision: https://reviews.llvm.org/D89402

4 years ago[libc++][test] MSVC has no __PRETTY_FUNCTION__
Casey Carter [Mon, 19 Oct 2020 23:20:59 +0000 (16:20 -0700)]
[libc++][test] MSVC has no __PRETTY_FUNCTION__

Use `__FUNCSIG__` instead when compiling with MSVC. While we're touching `makeTypeIDImp`, remove the warning suppression for C4640 "construction of local static object is not thread safe" since C1XX now correctly constant-initializes `id`.

4 years ago[libc++][test] Test nonconforming atomic_fetch_XXX overloads only on libc++
Casey Carter [Mon, 19 Oct 2020 22:43:11 +0000 (15:43 -0700)]
[libc++][test] Test nonconforming atomic_fetch_XXX overloads only on libc++

The Standard doesn't include the
```c++
template<class T>
T* atomic_fetch_meow(atomic<T*>, ...);
```
templates these tests are testing.

(See https://bugs.llvm.org/show_bug.cgi?id=47908)

4 years ago[libc++][test] Silence MSVC "comparison of signed and unsigned" warning
Casey Carter [Mon, 19 Oct 2020 22:32:57 +0000 (15:32 -0700)]
[libc++][test] Silence MSVC "comparison of signed and unsigned" warning

4 years ago[libc++][test] test allocator<const T> extension only on libc++
Casey Carter [Mon, 19 Oct 2020 22:25:35 +0000 (15:25 -0700)]
[libc++][test] test allocator<const T> extension only on libc++

4 years ago[libc++][test] Don't violate precondition [atomics.flag]/6
Casey Carter [Mon, 19 Oct 2020 22:24:50 +0000 (15:24 -0700)]
[libc++][test] Don't violate precondition [atomics.flag]/6

... which forbids passing `memory_order_release` or `memory_order_acq_rel` to either overload of `atomic_flag_test_explicit`.

4 years ago[libc++][test] atomic<T> requires trivially copyable T
Casey Carter [Mon, 19 Oct 2020 22:18:01 +0000 (15:18 -0700)]
[libc++][test] atomic<T> requires trivially copyable T

The author of these tests apparently forgot that `atomic_{,un}signed_lock_free` are already specializations of `atomic`.

4 years ago[libc++][test] Pass correct ordering to std::merge
Casey Carter [Mon, 19 Oct 2020 22:12:27 +0000 (15:12 -0700)]
[libc++][test] Pass correct ordering to std::merge

The predicate passed to `merge` must induce a strict weak ordering on its arguments.

4 years ago[libc++][test] Spell "TEST_CONSTEXPR_CXX17" correctly
Casey Carter [Mon, 19 Oct 2020 22:10:39 +0000 (15:10 -0700)]
[libc++][test] Spell "TEST_CONSTEXPR_CXX17" correctly

These three algorithm tests are incorrectly using `_LIBCPP_CONSTEXPR_AFTER_CXX17` instead of `TEST_CONSTEXPR_CXX17`.

4 years agolldb: Update for change in `clang::Lexer`'s constructor
Duncan P. N. Exon Smith [Tue, 20 Oct 2020 00:07:25 +0000 (20:07 -0400)]
lldb: Update for change in `clang::Lexer`'s constructor

b3eff6b7bb31e7ef059a3d238de138849839fbbd updated `Lexer::Lexer` to take
`clang::MemoryBufferRef` instead of `clang::MemoryBuffer*`. Update LLDB
to fix the bots.

4 years agoRevert "[gn build] (manually) port d09b08919ca"
Nico Weber [Tue, 20 Oct 2020 00:01:06 +0000 (20:01 -0400)]
Revert "[gn build] (manually) port d09b08919ca"

This reverts commit 4d2d287a030fe81a5bf9d982ed8ea26fe3bcee6b.
d09b08919ca got reverted in 7ecd60bb702.

4 years ago[hmaptool] Fix `NameError: global name 'num_buckets' is not defined` in `action_dump`.
Volodymyr Sapsai [Mon, 19 Oct 2020 23:25:45 +0000 (16:25 -0700)]
[hmaptool] Fix `NameError: global name 'num_buckets' is not defined` in `action_dump`.

4 years ago[libomptarget][amdgcn] Implement missing symbols in deviceRTL
Jon Chesterfield [Mon, 19 Oct 2020 23:23:44 +0000 (00:23 +0100)]
[libomptarget][amdgcn] Implement missing symbols in deviceRTL

[libomptarget][amdgcn] Implement missing symbols in deviceRTL

Malloc, wtime are stubs. Malloc needs a hostrpc implementation which is
a work in progress, wtime needs some experimentation to find out the
multiplier to get a time in seconds as documentation is scarce.

Reviewed By: ronlieb

Differential Revision: https://reviews.llvm.org/D89725

4 years agoRevert "[Sanitizers] Remove OpenBSD support" + 1
Evgenii Stepanov [Mon, 19 Oct 2020 22:53:34 +0000 (15:53 -0700)]
Revert "[Sanitizers] Remove OpenBSD support" + 1

Revert "Fix compiler-rt build on Windows after D89640"

This reverts commit a7acee89d68473183cc5021d952a56cdf0ae27d3.
This reverts commit d09b08919ca6e206cd981fdea8b19b1d1188e325.

Reason: breaks Linux / x86_64 build.

4 years agoLexer: Update the Lexer to use MemoryBufferRef, NFC
Duncan P. N. Exon Smith [Wed, 14 Oct 2020 15:11:09 +0000 (11:11 -0400)]
Lexer: Update the Lexer to use MemoryBufferRef, NFC

Update `Lexer` / `Lexer::Lexer` to use `MemoryBufferRef` instead of
`MemoryBuffer*`. Callers that were acquiring a `MemoryBuffer*` via
`SourceManager::getBuffer` were updated, such that if they checked
`Invalid` they use `getBufferOrNone` and otherwise `getBufferOrFake`.

Differential Revision: https://reviews.llvm.org/D89398

4 years ago[mlir] Use dynamic_tensor_from_elements in shape.broadcast conversion
Sean Silva [Mon, 19 Oct 2020 01:34:05 +0000 (18:34 -0700)]
[mlir] Use dynamic_tensor_from_elements in shape.broadcast conversion

Now, convert-shape-to-std doesn't internally create memrefs, which was
previously a bit of a layering violation. The conversion to memrefs
should logically happen as part of bufferization.

Differential Revision: https://reviews.llvm.org/D89669

4 years ago[mlir][DialectConversion] Fix recursive `clone` calls.
Sean Silva [Mon, 19 Oct 2020 04:10:55 +0000 (21:10 -0700)]
[mlir][DialectConversion] Fix recursive `clone` calls.

The framework was not tracking ops created in any regions of the cloned
op.

Differential Revision: https://reviews.llvm.org/D89668

4 years ago[mlir] Add std.dynamic_tensor_from_elements bufferization.
Sean Silva [Fri, 16 Oct 2020 22:57:27 +0000 (15:57 -0700)]
[mlir] Add std.dynamic_tensor_from_elements bufferization.

It's unfortunate that this requires adding a dependency on scf dialect
to std bufferization (and hence all of std transforms). This is a bit
perilous. We might want a lib/Transforms/Bufferize/ with a separate
bufferization library per dialect?

Differential Revision: https://reviews.llvm.org/D89667

4 years ago[mlir] Add some more std bufferize patterns.
Sean Silva [Fri, 16 Oct 2020 20:50:34 +0000 (13:50 -0700)]
[mlir] Add some more std bufferize patterns.

Add bufferizations for extract_element and tensor_from_elements.

Differential Revision: https://reviews.llvm.org/D89594

4 years agoReland "[Modules] Add stats to measure performance of building and loading modules."
Volodymyr Sapsai [Mon, 19 Oct 2020 20:39:47 +0000 (13:39 -0700)]
Reland "[Modules] Add stats to measure performance of building and loading modules."

Measure amount of high-level or fixed-cost operations performed during
building/loading modules and during header search. High-level operations
like building a module or processing a .pcm file are motivated by
previous issues where clang was re-building modules or re-reading .pcm
files unnecessarily. Fixed-cost operations like `stat` calls are tracked
because clang cannot change how long each operation takes but it can
perform fewer of such operations to improve the compile time.

Also tracking such stats over time can help us detect compile-time
regressions. Added stats are more stable than the actual measured
compilation time, so expect the detected regressions to be less noisy.

On relanding drop stats in MemoryBuffer.cpp as their value is pretty low
but affects a lot of clients and many of those aren't interested in
modules and header search.

rdar://problem/55715134

Reviewed By: aprantl, bruno

Differential Revision: https://reviews.llvm.org/D86895

4 years ago[AMDGPU] flat scratch ST addressing mode on gfx10
Stanislav Mekhanoshin [Thu, 15 Oct 2020 21:57:34 +0000 (14:57 -0700)]
[AMDGPU] flat scratch ST addressing mode on gfx10

GFX10 enables third addressing mode for flat scratch instructions,
an ST mode. In that mode both register operands are omitted and
only swizzled offset is used in addition to flat_scratch base.

Differential Revision: https://reviews.llvm.org/D89501

4 years ago[trace] rename ThreadIntelPT into TraceTrace
Walter Erquinigo [Wed, 14 Oct 2020 17:25:39 +0000 (10:25 -0700)]
[trace] rename ThreadIntelPT into TraceTrace

Renamed ThreadIntelPT to TreaceThread, making it a top-level class. I noticed that this class can and shuld work for any trace plugin and there's nothing intel-pt specific in it.
With that TraceThread change, I was able to move most of the json file parsing logic to the base class TraceSessionFileParser, which makes adding new plug-ins easier.

This originally was part of https://reviews.llvm.org/D89283

Differential Revision: https://reviews.llvm.org/D89408

4 years ago[NFC] Inline assertion-only variable
Jordan Rupprecht [Mon, 19 Oct 2020 22:11:37 +0000 (15:11 -0700)]
[NFC] Inline assertion-only variable

4 years ago[VE] Fix initializer visibility
Sergei Trofimovich [Mon, 19 Oct 2020 21:51:12 +0000 (22:51 +0100)]
[VE] Fix initializer visibility

Before the change attempt to link libLTO.so against shared
LLVM library failed as:

```
[ 76%] Linking CXX shared library ../../lib/libLTO.so
... /usr/bin/cmake -E cmake_link_script CMakeFiles/LTO.dir/link.txt --verbose=1
c++ -o ...libLTO.so.12git ...ibLLVM-12git.so
ld: CMakeFiles/LTO.dir/lto.cpp.o: in function `llvm::InitializeAllTargetInfos()':
include/llvm/Config/Targets.def:31: undefined reference to `LLVMInitializeVETargetInfo'
```

It happens because on linux llvm build system sets default
symbol visibility to "hidden". The fix is to set visibility
back to "default" for exported APIs with LLVM_EXTERNAL_VISIBILITY.

Bug: https://bugs.llvm.org/show_bug.cgi?id=47847

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D89633

4 years agoRecommit "[CUDA][HIP] Defer overloading resolution diagnostics for host device functions"
Yaxun (Sam) Liu [Wed, 23 Sep 2020 22:00:23 +0000 (18:00 -0400)]
Recommit "[CUDA][HIP] Defer overloading resolution diagnostics for host device functions"

This recommits 7f1f89ec8d9944559042bb6d3b1132eabe3409de and
40df06cdafc010002fc9cfe1dda73d689b7d27a6 with bug fixes for
memory sanitizer failure and Tensile build failure.

4 years ago[NFC] Refactor DiagnosticBuilder and PartialDiagnostic
Yaxun (Sam) Liu [Wed, 23 Sep 2020 20:16:00 +0000 (16:16 -0400)]
[NFC] Refactor DiagnosticBuilder and PartialDiagnostic

PartialDiagnostic misses some functions compared to DiagnosticBuilder.

This patch refactors DiagnosticBuilder and PartialDiagnostic, extracts
the common functionality so that the streaming << operators are
shared.

Differential Revision: https://reviews.llvm.org/D84362

4 years ago[NPM] Port module-debuginfo pass to the new pass manager
Amy Huang [Mon, 19 Oct 2020 21:31:17 +0000 (14:31 -0700)]
[NPM] Port module-debuginfo pass to the new pass manager

Port pass to NPM and update tests in DebugInfo/Generic.

Differential Revision: https://reviews.llvm.org/D89730

4 years ago[NFCI][SCEV] Always refer to enum SCEVTypes as enum, not integer
Roman Lebedev [Mon, 19 Oct 2020 19:28:44 +0000 (22:28 +0300)]
[NFCI][SCEV] Always refer to enum SCEVTypes as enum, not integer

The main tricky thing here is forward-declaring the enum:
we have to specify it's underlying data type.

In particular, this avoids the danger of switching over the SCEVTypes,
but actually switching over an integer, and not being notified
when some case is not handled.

I have updated most of such switches to be exaustive and not have
a default case, where it's pretty obvious to be the intent,
however not all of them.

4 years ago[NFC][SCEV] BuildConstantFromSCEV(): reformat, NFC
Roman Lebedev [Mon, 19 Oct 2020 20:41:26 +0000 (23:41 +0300)]
[NFC][SCEV] BuildConstantFromSCEV(): reformat, NFC

Makes diff in next commit more readable

4 years ago[NFC][SCEVExpander] isHighCostExpansionHelper(): rewrite as a switch
Roman Lebedev [Mon, 19 Oct 2020 19:39:55 +0000 (22:39 +0300)]
[NFC][SCEVExpander] isHighCostExpansionHelper(): rewrite as a switch

If we switch over an enum, compiler can easily issue a diagnostic
if some case is not handled. However with an if cascade that isn't so.
Experimental evidence suggests new behavior to be superior.

4 years ago[Intrinsics] Added writeonly attribute to the first arg of llvm.memmove
Dávid Bolvanský [Mon, 19 Oct 2020 21:08:27 +0000 (23:08 +0200)]
[Intrinsics] Added writeonly attribute to the first arg of llvm.memmove

D18714 introduced writeonly attribute:

"Also start using the attribute for memset, memcpy, and memmove intrinsics,
and remove their special-casing in BasicAliasAnalysis."

But actually, writeonly was not attached to memmove - oversight, it seems.

So let's add it. As we can see, this helps DSE to eliminate redundant stores.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D89724

4 years ago[libcxx] [test] Use _putenv instead of setenv/unsetenv on windows
Martin Storsjö [Sun, 18 Oct 2020 20:19:29 +0000 (23:19 +0300)]
[libcxx] [test] Use _putenv instead of setenv/unsetenv on windows

Move the functions to the helper header and keep the arch specific
logic there.

Differential Revision: https://reviews.llvm.org/D89681

4 years ago[libcxx] [test] Fix all remaining issues with fs::path::string_type being wstring
Martin Storsjö [Sun, 18 Oct 2020 19:47:50 +0000 (22:47 +0300)]
[libcxx] [test] Fix all remaining issues with fs::path::string_type being wstring

Use fs::path as variable type instead of std::string, when the input
potentially is a path, as they can't be implicitly converted back to
string.

Differential Revision: https://reviews.llvm.org/D89674

4 years ago[libcxx] [test] Fix filesystem_test_helper.h to compile for windows
Martin Storsjö [Tue, 13 Oct 2020 18:42:31 +0000 (21:42 +0300)]
[libcxx] [test] Fix filesystem_test_helper.h to compile for windows

Use .string() instead of .native() in places where we want to combine
paths with std::string.

Convert some methods to take a fs::path as parameter instead of
std::string, for cases where they are called with paths as
parameters (which can't be implicitly converted to std::string if
the path's string_type is wstring).

Differential Revision: https://reviews.llvm.org/D89530

4 years ago[libcxx] [test] Mark tests that require specific allocation behaviours as libcpp...
Martin Storsjö [Mon, 19 Oct 2020 08:44:19 +0000 (11:44 +0300)]
[libcxx] [test] Mark tests that require specific allocation behaviours as libcpp only

This fixes/silences a few failures on libstdc++ on linux.

Differential Revision: https://reviews.llvm.org/D89676

4 years ago[libcxx] [test] Exclude domain socket tests on windows, like bsd/darwin
Martin Storsjö [Mon, 19 Oct 2020 08:07:31 +0000 (11:07 +0300)]
[libcxx] [test] Exclude domain socket tests on windows, like bsd/darwin

Differential Revision: https://reviews.llvm.org/D89673

4 years ago[libcxx] [test] Add LIBCPP_ONLY() around another test for an implementation detail
Martin Storsjö [Mon, 19 Oct 2020 07:58:31 +0000 (10:58 +0300)]
[libcxx] [test] Add LIBCPP_ONLY() around another test for an implementation detail

Differential Revision: https://reviews.llvm.org/D89675

4 years ago[libcxx] [test] Don't require fs::path::operator(string_type&&) to be noexcept
Martin Storsjö [Mon, 19 Oct 2020 08:46:08 +0000 (11:46 +0300)]
[libcxx] [test] Don't require fs::path::operator(string_type&&) to be noexcept

Mark this as a libcpp specific test; the standard doesn't say that
this method should be noexcept.

Differential Revision: https://reviews.llvm.org/D89677

4 years ago[libcxx] [test] Allow fs::permissions(path, perms, perm_options, error_code) to be...
Martin Storsjö [Mon, 19 Oct 2020 08:46:58 +0000 (11:46 +0300)]
[libcxx] [test] Allow fs::permissions(path, perms, perm_options, error_code) to be noexcept

The standard doesn't declare this overload as noexcept, but doesn't
either say that it strictly cannot be noexcept either. The function
doesn't throw on errors that are signaled via error_code, but the
standard says that it may throw a bad_alloc.

This fixes an error with libstdc++ on linux.

Differential Revision: https://reviews.llvm.org/D89678

4 years ago[libcxx] [test] Do error printfs to stderr in filesystems tests
Martin Storsjö [Mon, 19 Oct 2020 08:49:17 +0000 (11:49 +0300)]
[libcxx] [test] Do error printfs to stderr in filesystems tests

This makes them more readable in llvm-lit's output on failures.

This only applies the change on the filesystem test subdir.

Differential Revision: https://reviews.llvm.org/D89680

4 years ago[clang] Automatically link against oldnames just as linking against libcmt
Martin Storsjö [Mon, 19 Oct 2020 13:10:18 +0000 (16:10 +0300)]
[clang] Automatically link against oldnames just as linking against libcmt

Differential Revision: https://reviews.llvm.org/D89702

4 years agoclang/{Format,Rewrite}: Stop using SourceManager::getBuffer, NFC
Duncan P. N. Exon Smith [Wed, 14 Oct 2020 16:58:19 +0000 (12:58 -0400)]
clang/{Format,Rewrite}: Stop using SourceManager::getBuffer, NFC

Update clang/lib/Format and clang/lib/Rewrite to use a `MemoryBufferRef`
from `getBufferOrFake` instead of `MemoryBuffer*` from `getBuffer`.

No functionality change here, since the call sites weren't checking if
the buffer was valid.

Differential Revision: https://reviews.llvm.org/D89406

4 years agoAdd alloca size threshold for StackTagging initializer merging.
Evgenii Stepanov [Thu, 15 Oct 2020 23:10:42 +0000 (16:10 -0700)]
Add alloca size threshold for StackTagging initializer merging.

Summary:
Initializer merging generates pretty inefficient code for large allocas
that also happens to trigger an exponential algorithm somewhere in
Machine Instruction Scheduler. See https://bugs.llvm.org/show_bug.cgi?id=47867.

This change adds an upper limit for the alloca size. The default limit
is selected such that worst case size of memtag-generated code is
similar to non-memtag (but because of the ISA quirks, this case is
realized at the different value of alloca size, ex. memset inlining
triggers at sizes below 512, but stack tagging instructions are 2x
shorter, so limit is approx. 256).

We could try harder to emit more compact code with initializer merging,
but that would only affect large, sparsely initialized allocas, and
those are doing fine already.

Reviewers: vitalybuka, pcc

Subscribers: llvm-commits

4 years ago[test][NPM] Fix already-vectorized.ll under NPM
Arthur Eubanks [Mon, 19 Oct 2020 20:09:39 +0000 (13:09 -0700)]
[test][NPM] Fix already-vectorized.ll under NPM

The NPM runs SpeculateAroundPHIs which breaks critical edges, causing a
branch we check for to not directly jump back to the same block.

4 years ago[SelectionDAG][X86] Enable SimplifySetCC CTPOP transforms for vector splats
Craig Topper [Mon, 19 Oct 2020 19:03:04 +0000 (12:03 -0700)]
[SelectionDAG][X86] Enable SimplifySetCC CTPOP transforms for vector splats

This enables these transforms for vectors:
(ctpop x) u< 2 -> (x & x-1) == 0
(ctpop x) u> 1 -> (x & x-1) != 0
(ctpop x) == 1 --> (x != 0) && ((x & x-1) == 0)
(ctpop x) != 1 --> (x == 0) || ((x & x-1) != 0)

All enabled if CTPOP isn't Legal. This differs from the scalar
behavior where the first two are done unconditionally and the
last two are done if CTPOP isn't Legal or Custom. The Legal
check produced better results for vectors based on X86's
custom handling. Might be worth re-visiting scalars here.

I disabled the looking through truncate for vectors. The
code that creates new setcc can use the same result VT as the
original setcc even if we truncated the input. That may work
work for most scalars, but definitely wouldn't work for vectors
unless it was a vector of i1.

Fixes or at least improves PR47825

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D89346

4 years ago[X86] Add i32->float and i64->double bitcast pseudo instructions to store folding...
Craig Topper [Mon, 19 Oct 2020 18:50:47 +0000 (11:50 -0700)]
[X86] Add i32->float and i64->double bitcast pseudo instructions to store folding table.

We have pseudo instructions we use for bitcasts between these types.
We have them in the load folding table, but not the store folding
table. This adds them there so they can be used for stack spills.

I added an exact size check so that we don't fold when the stack slot
is larger than the GPR. Otherwise the upper bits in the stack slot
would be garbage. That would be fine for Eli's test case in PR47874,
but I'm not sure its safe in general.

A step towards fixing PR47874. Next steps are to change the ADDSSrr_Int
pseudo instructions to use FR32 as the second source register class
instead of VR128. That will keep the coalescer from promoting the
register class of the bitcast instruction which will make the stack
slot 4 bytes instead of 16 bytes.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D89656

4 years agoFix typo
Matt Arsenault [Sat, 17 Oct 2020 14:12:30 +0000 (10:12 -0400)]
Fix typo

4 years ago[ORC] Fix a missing include.
Lang Hames [Mon, 19 Oct 2020 18:55:08 +0000 (11:55 -0700)]
[ORC] Fix a missing include.

4 years ago[NPM][test] Fix some LoopVectorize tests under NPM
Arthur Eubanks [Mon, 19 Oct 2020 19:04:31 +0000 (12:04 -0700)]
[NPM][test] Fix some LoopVectorize tests under NPM

4 years ago[BatchAA] Add test for incorrect phi cycle result (NFC)
Nikita Popov [Mon, 19 Oct 2020 18:51:37 +0000 (20:51 +0200)]
[BatchAA] Add test for incorrect phi cycle result (NFC)

AA computes the correct result for phi/a1 aliasing, while BatchAA
produces an incorrect result depening on which queries have been
performed beforehand.

4 years ago[AMDGPU] Correct comment typo in SIMemoryLegaliizer.cpp
Tony [Mon, 19 Oct 2020 17:19:30 +0000 (17:19 +0000)]
[AMDGPU] Correct comment typo in SIMemoryLegaliizer.cpp

4 years ago[NPM][opt] Run -O# after other passes in legacy PM compatibility mode
Arthur Eubanks [Mon, 19 Oct 2020 18:28:45 +0000 (11:28 -0700)]
[NPM][opt] Run -O# after other passes in legacy PM compatibility mode

Generally tests run -O# before other passes, not after.

4 years ago[flang][openacc] Switch to use TODO from D88909
Valentin Clement [Mon, 19 Oct 2020 18:47:12 +0000 (14:47 -0400)]
[flang][openacc] Switch to use TODO from D88909

Use the Todo.h header file introduce in D88909 to marke part of the lowering that are
not done yet.

Reviewed By: jeanPerier

Differential Revision: https://reviews.llvm.org/D88915

4 years ago[LLDB][TestSuite] Improve skipIfWindowsAndNonEnglish in decorators.py
Alexandre Ganea [Mon, 19 Oct 2020 18:27:41 +0000 (14:27 -0400)]
[LLDB][TestSuite] Improve skipIfWindowsAndNonEnglish in decorators.py

Differential Revision: https://reviews.llvm.org/D89716

4 years ago[SVE] Update vector reduction intrinsics in new tests.
Cameron McInally [Mon, 19 Oct 2020 18:26:29 +0000 (13:26 -0500)]
[SVE] Update vector reduction intrinsics in new tests.

Remove `experimental` from the intrinsic names.

4 years ago[libc] Add LLVM libc specific functions to llvm_libc_ext.td.
Michael Jones [Tue, 13 Oct 2020 23:20:50 +0000 (23:20 +0000)]
[libc] Add LLVM libc specific functions to llvm_libc_ext.td.

Also moved most of the common type definitions from libc/spec/stdc.td
to libc/spec/spec.td so that they can be used to list functions in llvm_libc_ext.td.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D89436

4 years ago[AMDGPU] Remove MUL_LOHI_U24/MUL_LOHI_I24
Jay Foad [Mon, 19 Oct 2020 15:34:54 +0000 (16:34 +0100)]
[AMDGPU] Remove MUL_LOHI_U24/MUL_LOHI_I24

These were introduced in r279902 on the grounds that using separate
MUL_U24/MUL_I24 and MULHI_U24/MULHI_I24 nodes would introduce multiple
uses of the operands, which would prevent SimplifyDemandedBits from
simplifying the operands.

This has since been fixed by D24672 "AMDGPU/SI: Use new SimplifyDemandedBits helper for multi-use operations"

No functional change intended. At least it has no effect on lit tests.

Differential Revision: https://reviews.llvm.org/D89706

4 years ago[OpenMP] Fixing OpenMP/driver.c failing on 32-bit hosts
Joseph Huber [Mon, 19 Oct 2020 13:07:02 +0000 (09:07 -0400)]
[OpenMP] Fixing OpenMP/driver.c failing on 32-bit hosts

The changes made in D88594 caused the test OpenMP/driver.c to fail on a 32-bit host becuase it was offloading to a 64-bit architecture by default. The offloading test was moved to a new file and a feature was added to the lit config to check for a 64-bit host.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D89696

4 years ago[LangRef] Define mustprogress attribute
Atmn Patel [Mon, 19 Oct 2020 17:29:10 +0000 (13:29 -0400)]
[LangRef] Define mustprogress attribute

LLVM IR currently assumes some form of forward progress. This form is
not explicitly defined anywhere, and is the cause of miscompilations
in most languages that are not C++11 or later. This implicit forward progress
guarantee can not be opted out of on a function level nor on a loop
level. Languages such as C (C11 and later), C++ (pre-C++11), and Rust
have different forward progress requirements and this needs to be
evident in the IR.

Specifically, C11 and onwards (6.8.5, Paragraph 6) states that "An
iteration statement whose controlling expression is not a constant
expression, that performs no input/output operations, does not access
volatile objects, and performs no synchronization or atomic operations
in its body, controlling expression, or (in the case of for statement)
its expression-3, may be assumed by the implementation to terminate."
C++11 and onwards does not have this assumption, and instead assumes
that every thread must make progress as defined in [intro.progress] when
it comes to scheduling.

This was initially brought up in [0] as a bug, a solution was presented
in [1] which is the current workaround, and the predecessor to this
change was [2].

After defining a notion of forward progress for IR, there are two
options to address this:
1) Set the default to assuming Forward Progress and provide an opt-out for functions and an opt-in for loops.
2) Set the default to not assuming Forward Progress and provide an opt-in for functions, and an opt-in for loops.

Option 2) has been selected because only C++11 and onwards have a
forward progress requirement and it makes sense for them to opt-into it
via the defined `mustprogress` function attribute.  The `mustprogress`
function attribute indicates that the function is required to make
forward progress as defined. This is sharply in contrast to the status
quo where this is implicitly assumed. In addition, `willreturn` implies `mustprogress`.

The background for why this definition was chosen is in [3] and for why
the option was chosen is in [4] and the corresponding thread(s). The implementation is in D85393, the
clang patch is in D86841, the LoopDeletion patch is in D86844, the
Inliner patches are in D87180 and D87262, and there will be more
incoming.

[0] https://bugs.llvm.org/show_bug.cgi?id=965#c25
[1] https://lists.llvm.org/pipermail/llvm-dev/2017-October/118558.html
[2] https://reviews.llvm.org/D65718
[3] https://lists.llvm.org/pipermail/llvm-dev/2020-September/144919.html
[4] https://lists.llvm.org/pipermail/llvm-dev/2020-September/145023.html

Reviewed By: jdoerfert, efriedma, nikic

Differential Revision: https://reviews.llvm.org/D86233

4 years ago[clang] Use SourceLocation as key in std::map, NFCI
Mikhail Maltsev [Mon, 19 Oct 2020 17:30:51 +0000 (18:30 +0100)]
[clang] Use SourceLocation as key in std::map, NFCI

SourceLocation implements `operator<`, so `SourceLocation`-s can be used
as keys in `std::map` directly, there is no need to extract the internal
representation.

Since the `operator<` simply compares the internal representations of
its operands, this patch does not introduce any functional changes.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D89705

4 years ago[SCEV] Add tests where assumes can be used to improve tripe multiple.
Florian Hahn [Mon, 19 Oct 2020 16:25:34 +0000 (17:25 +0100)]
[SCEV] Add tests where assumes can be used to improve tripe multiple.

This patch adds a set of tests where information from assumes can be
used to improve the trip multiple.

See PR47904.

4 years ago[libc++] Add more tests for operator<< on std::complex
Louis Dionne [Fri, 16 Oct 2020 18:19:39 +0000 (14:19 -0400)]
[libc++] Add more tests for operator<< on std::complex

4 years ago[DAGCombiner][PowerPC] Remove isMulhCheaperThanMulShift TLI hook, Use isOperationLega...
Amy Kwan [Thu, 15 Oct 2020 16:24:21 +0000 (11:24 -0500)]
[DAGCombiner][PowerPC] Remove isMulhCheaperThanMulShift TLI hook, Use isOperationLegalOrCustom directly instead.

MULH is often expanded on targets.
This patch removes the isMulhCheaperThanMulShift hook and uses
isOperationLegalOrCustom instead.

Differential Revision: https://reviews.llvm.org/D80485

4 years ago[llvm] Make obj2yaml and yaml2obj LLVM utilities instead of tools
Jonas Devlieghere [Mon, 19 Oct 2020 17:18:20 +0000 (10:18 -0700)]
[llvm] Make obj2yaml and yaml2obj LLVM utilities instead of tools

For testing purposes I need a way to build and install FileCheck and
yaml2obj. I had to choose between making FileCheck an LLVM tool and
making obj2yaml and yaml2obj utilities. I think the distinction is
rather arbitrary but my understanding is that tools are things meant for
the toolchain while utilities are more used for things like testing,
which is the case here.

The functional difference is that these tools now end up in the
${LLVM_UTILS_INSTALL_DIR}, which defaults to the ${LLVM_TOOLS_INSTALL_DIR}.
Unless you specified a different value or you added obj2yaml and
yaml2obj to ${LLVM_TOOLCHAIN_TOOLS}, this patch shouldn't change
anything.

Differential revision: https://reviews.llvm.org/D89357

4 years ago[AMDGPU] Simplify cumode handling in SIMemoryLegalizer
Tony [Mon, 19 Oct 2020 01:04:06 +0000 (01:04 +0000)]
[AMDGPU] Simplify cumode handling in SIMemoryLegalizer

Differential Revision: https://reviews.llvm.org/D89663

4 years ago[AMDGPU] Extend hip-toolchin-features.hip test
Tony [Sat, 17 Oct 2020 22:38:04 +0000 (22:38 +0000)]
[AMDGPU] Extend hip-toolchin-features.hip test

- Extend hip-toolchin-features.hip to also check the lld attributes
  are passed correctly.

- Add check for cumode attributes.

Differential Revision: https://reviews.llvm.org/D89636

4 years ago[AMDGPU] Correct hsa-diag-v3.s test
Tony [Sat, 17 Oct 2020 21:59:54 +0000 (21:59 +0000)]
[AMDGPU] Correct hsa-diag-v3.s test

- Use file_check -LABEL markers to prevent false positives being
  reported due to messages from different tests causing success to be
  reported.

- Add checks for all the run commands for more robust testing.

- Add checks for the absence of errors.

- Name and order tests more sensibly.

Differential Revision: https://reviews.llvm.org/D89635

4 years ago[NFC][MC] Type [MC]Register uses in MachineTraceMetrics
Mircea Trofin [Mon, 19 Oct 2020 16:13:47 +0000 (09:13 -0700)]
[NFC][MC] Type [MC]Register uses in MachineTraceMetrics

Differential Revision: https://reviews.llvm.org/D89710

4 years ago[libc++] Skip tests using constexpr destructors with older clang versions
Alex Richardson [Mon, 19 Oct 2020 16:22:54 +0000 (17:22 +0100)]
[libc++] Skip tests using constexpr destructors with older clang versions

It appears that the released version of clang that supports constexpr
destructors is clang 10 and the oldest one that accepts -std=c++2a is 5,
so mark these as UNSUPPORTED for clang-5 to clang-9.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D89704

4 years ago[Flang][OpenACC] Fix for branching out issue in OpenACC parallel construct.
sameeran joshi [Tue, 6 Oct 2020 04:51:06 +0000 (10:21 +0530)]
[Flang][OpenACC] Fix for branching out issue in OpenACC parallel construct.

From OpenACC 3.0 Standards document
840 • A program may not branch into or out of an OpenACC parallel construct.
Exits are allowed provided it does not cause an exit outside the parallel region.

Test case exits out of the inner do loop, but it is still inside the parallel region.
Patch tries to extract labels from block attached to a construct,
If the exit is to a label not in the collected list then flags an error.

Reviewed By: tskeith

Differential Revision: https://reviews.llvm.org/D87906

4 years ago[libc++] Refactor the fuzzing tests
Louis Dionne [Fri, 16 Oct 2020 14:33:18 +0000 (10:33 -0400)]
[libc++] Refactor the fuzzing tests

Define all the fuzzing tests in libcxx/test/libcxx/fuzzing, and get
rid of the ad-hoc libcxx/fuzzing directory, which wasn't properly
integrated with the build system or test suite.

As a fly-by change, this also reduces the dependencies of fuzzing tests
on large library components like <iostream>, to make them work on more
platforms.

4 years ago[ORC] Fix unused variable warning.
Lang Hames [Mon, 19 Oct 2020 15:45:38 +0000 (08:45 -0700)]
[ORC] Fix unused variable warning.

4 years ago[InstCombine] foldOrOfICmps - only fold (icmp_eq B, 0) | (icmp_ult/gt A, B) for integ...
Simon Pilgrim [Mon, 19 Oct 2020 16:05:38 +0000 (17:05 +0100)]
[InstCombine] foldOrOfICmps - only fold (icmp_eq B, 0) | (icmp_ult/gt A, B) for integer types

Fixes a number of stage2 buildbots that were failing when I generalized the m_ConstantInt() logic - that didn't match for pointer types but m_Zero() does......

4 years ago[ML] Add final reward logging facility.
Mircea Trofin [Sat, 17 Oct 2020 15:40:44 +0000 (08:40 -0700)]
[ML] Add final reward logging facility.

Allow logging final rewards. A final reward is logged only once, and is
serialized as all-zero values, except for the last one.

Differential Revision: https://reviews.llvm.org/D89626

4 years ago[Dexter][NFC] Add Missing Commands to Commands.md Contents
Nabeel Omer [Mon, 19 Oct 2020 15:38:49 +0000 (16:38 +0100)]
[Dexter][NFC] Add Missing Commands to Commands.md Contents

  NFC patch simply updates the commands.md documentation contents with missing
  links to the DexLimitSteps and DexLabel command documentation.

  Differential Revision: https://reviews.llvm.org/D89689

  Author:    Nabeel Omer <nabeel.omer@sony.com>