18 months ago[lldb] Set the default architecture also in buildDefault
Raphael Isemann [Thu, 5 Nov 2020 15:13:20 +0000 (16:13 +0100)]
[lldb] Set the default architecture also in buildDefault

In D89056 the default value for architecture was moved to `build` so that
all called functions see the same architecture value. It seems there are a
few functions that call buildDefault directly (and not via build), so
on some test configurations that set a custom arch value the architecture
value is no longer available.

This just adds the architecture code from build to buildDefault to get
the bots green again while I'm looking for a better solution.

18 months agoImplement Lambda Conversion Operators for All CCs for MSVC.
Erich Keane [Mon, 2 Nov 2020 15:43:45 +0000 (07:43 -0800)]
Implement Lambda Conversion Operators for All CCs for MSVC.

As described here:

In order to allow Lambdas to be used with traditional Win32 APIs, they
emit a conversion function for (what Raymond Chen claims is all) a
number of the calling conventions.  Through experimentation, we
discovered that the list isn't quite 'all'.

This patch implements this by taking the list of conversions that MSVC
emits (across 'all' architectures, I don't see any CCs on ARM), then
emits them if they are supported by the current target.

However, we also add 3 other options (which may be duplicates):
free-function, member-function, and operator() calling conventions.  We
do this because we have an extension where we generate both free and
member for these cases so th at people specifying a calling convention
on the lambda will have the expected behavior when specifying one of
those two.

MSVC doesn't seem to permit specifying calling-convention on lambdas,
but we do, so we need to make sure those are emitted as well. We do this
so that clang-only conventions are supported if the user specifies them.

Differential Revision: https://reviews.llvm.org/D90634

18 months ago[gn build] Port 659f4bd87ef
LLVM GN Syncbot [Thu, 5 Nov 2020 15:11:13 +0000 (15:11 +0000)]
[gn build] Port 659f4bd87ef

18 months ago[clang] Add an option for hiding line numbers in diagnostics
Raphael Isemann [Thu, 5 Nov 2020 14:41:09 +0000 (15:41 +0100)]
[clang] Add an option for hiding line numbers in diagnostics

Clang offers a `-f[no]-show-column` flag for hiding the column numbers when
printing diagnostics but there is no option for doing the same with line

In LLDB having this option would be useful, as LLDB sometimes only knows the
file name for a SourceLocation and just assigns it the dummy line/column `1:1`.
These fake line/column numbers are confusing to the user and LLDB should be able
to tell clang to hide *both* the column and the line number when rendering text

This patch adds a flag for also hiding the line numbers. It's not exposed via
the command line flags as it's most likely not very useful for any user and can
lead to ambiguous output when the user decides to only hide either the line or
the column number (where `file:1: ...` could now refer to both line 1 or column
1 depending on the compiler flags). LLDB can just access the DiagnosticOptions
directly when constructing its internal Clang instance.

The effect doesn't apply to Vi/MSVC style diagnostics because it's not defined
how these diagnostic styles would show an omitted line number (MSVC doesn't have
such an option and Vi's line mode is theory only supporting line numbers if I
understand it correctly).

Reviewed By: thakis, MaskRay

Differential Revision: https://reviews.llvm.org/D83038

18 months ago[FileCheck] Use %ProtectFileCheckOutput in allow-unused-prefixes.txt
Mircea Trofin [Mon, 2 Nov 2020 18:26:28 +0000 (10:26 -0800)]
[FileCheck] Use %ProtectFileCheckOutput in allow-unused-prefixes.txt

Differential Revision: https://reviews.llvm.org/D90631

18 months ago[KnownBits] Move ValueTracking SREM KnownBits handling to KnownBits::srem. NFCI.
Simon Pilgrim [Thu, 5 Nov 2020 14:55:42 +0000 (14:55 +0000)]
[KnownBits] Move ValueTracking SREM KnownBits handling to KnownBits::srem. NFCI.

Move the ValueTracking implementation to KnownBits, the SelectionDAG version is more limited so I'm intending to replace that as a separate commit.

18 months ago[lldb] Add Apple simulator platforms to lldbplatform.py
Raphael Isemann [Thu, 5 Nov 2020 14:32:03 +0000 (15:32 +0100)]
[lldb] Add Apple simulator platforms to lldbplatform.py

This just adds the simulator platforms to the lldbplatform enumerations
and the respective test decorator.

The platform names for the simulator are just the SDK names since D85537, so
that's why we are not using LLDB's usual platform names here (e.g., SDK =
"iphonesimulator" vs LLDB platform ="ios-simulator").

Also removes the duplicate platform enumaration in lldbplatformutil.py.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D89694

18 months ago[KnownBits] Move ValueTracking/SelectionDAG UREM KnownBits handling to KnownBits...
Simon Pilgrim [Thu, 5 Nov 2020 14:29:13 +0000 (14:29 +0000)]
[KnownBits] Move ValueTracking/SelectionDAG UREM KnownBits handling to KnownBits::urem. NFCI.

Both these have the same implementation - so move them to a single KnownBits copy.

GlobalISel will be able to use this as well with minimal effort.

18 months ago[mlir] Move TestDialect and its passes to mlir::test namespace.
Alexander Belyaev [Wed, 4 Nov 2020 21:18:26 +0000 (22:18 +0100)]
[mlir] Move TestDialect and its passes to mlir::test namespace.

TestDialect has many operations and they all live in ::mlir namespace.
Sometimes it is not clear whether the ops used in the code for the test passes
belong to Standard or to Test dialects.

Also, with this change it is easier to understand what test passes registered
in mlir-opt are actually passes in mlir/test.

Differential Revision: https://reviews.llvm.org/D90794

18 months ago[sanitizers] Remove the test case involving `new int[0]`
Vy Nguyen [Thu, 5 Nov 2020 05:27:38 +0000 (00:27 -0500)]
[sanitizers] Remove the test case involving `new int[0]`

Bionic doesn't acutally allocate any memory in this case, so there won't be a leak on Android.

Differential Revision: https://reviews.llvm.org/D90821

18 months agoReland [lldb] Explicitly use the configuration architecture when building test execut...
Raphael Isemann [Thu, 22 Oct 2020 13:10:22 +0000 (15:10 +0200)]
Reland [lldb] Explicitly use the configuration architecture when building test executables

This originally broke the TestQuoting which explicitly called buildDefault
instead of calling build() and marking the test as no_debug_info_test.
TestQuoting has been rewritten by now and is using `build`, so this should now
pass on all platforms.

Original summary:

The Darwin builder currently assumes in `getArchCFlags` that the passed `arch`
value is an actual string it can string.join with vendor/os/version/env strings:

   triple = '-'.join([arch, vendor, os, version, env])

However this is not true for most tests as we just pass down the `arch=None`
default value from `TestBase.build`. This causes that if we actually end up in
this function we just error out when concatenating `None` with the other actual
strings of vendor/os/version/env. What we should do instead is check that if
there is no test-specific architecture that we fall back to the configuration's
architecture value.

It seems we already worked around this in `builder.getArchSpec` by explicitly
falling back to the architecture specified in the configuration.

This patch just moves this fallback logic to the top `build` function so that it
affects all functions called from `TestBase.build`.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D89056

18 months ago[lldb] Skip TestChangeProcessGroup on watchOS/tvOS
Raphael Isemann [Thu, 5 Nov 2020 14:09:38 +0000 (15:09 +0100)]
[lldb] Skip TestChangeProcessGroup on watchOS/tvOS

`fork` is marked as `__WATCHOS_PROHIBITED __TVOS_PROHIBITED` so the test source
which is calling fork will never compile on watchOS/tvOS. This just adds the
skip decorator for these platforms.

Reviewed By: mib

Differential Revision: https://reviews.llvm.org/D89695

18 months ago[TableGen] Add true and false literals to represent booleans
Paul C. Anagnostopoulos [Mon, 2 Nov 2020 17:37:25 +0000 (12:37 -0500)]
[TableGen] Add true and false literals to represent booleans

Update the Programmer's Reference document.

Add a test. Update a couple of tests with an improved error message.

Differential Revision: https://reviews.llvm.org/D90635

18 months ago[libc++] Correct XFAILs for the C++20 Synchronization Library
Louis Dionne [Thu, 5 Nov 2020 13:44:38 +0000 (08:44 -0500)]
[libc++] Correct XFAILs for the C++20 Synchronization Library

Technically, these tests don't only fail against macosx10.9 to 10.15,
but really against any released macOS yet.

18 months ago[KnownBits] Move ValueTracking/SelectionDAG UDIV KnownBits handling to KnownBits...
Simon Pilgrim [Thu, 5 Nov 2020 13:42:27 +0000 (13:42 +0000)]
[KnownBits] Move ValueTracking/SelectionDAG UDIV KnownBits handling to KnownBits::udiv. NFCI.

Both these have the same implementation - so move them to a single KnownBits copy.

GlobalISel will be able to use this as well with minimal effort.

18 months ago[lldb] Also Catch invalid calls to TestPExpectTest's expect()
Raphael Isemann [Thu, 5 Nov 2020 12:41:26 +0000 (13:41 +0100)]
[lldb] Also Catch invalid calls to TestPExpectTest's expect()

This is a follow up to D88792 which found an issue in a call to PExpectTest's
expect function that allows passing a string to the `substrs` parameter. However
this issue was found by just grepping and TestPExpect's expect function is still
accepting a single string as a value to `substrs`.

This patch adds the same sanity check that D88792 added to the PExpectTest's
implementation of `expect` and also adds a small test for it.

Reviewed By: kastiglione, JDevlieghere

Differential Revision: https://reviews.llvm.org/D89302

18 months ago[Flang][f18] Remove unimplemented options from `flang -help` (NFC)
Andrzej Warzynski [Thu, 5 Nov 2020 12:34:42 +0000 (12:34 +0000)]
[Flang][f18] Remove unimplemented options from `flang -help` (NFC)

18 months ago[GVN] Fix MemorySSA update when replacing assume(false) with stores.
Florian Hahn [Thu, 5 Nov 2020 11:51:06 +0000 (11:51 +0000)]
[GVN] Fix MemorySSA update when replacing assume(false) with stores.

When replacing an assume(false) with a store, we have to be more careful
with the order we insert the new access. This patch updates the code to
look at the accesses in the block to find a suitable insertion point.

Alterantively we could check the defining access of the assume, but IIRC
there has been some discussion about making assume() readnone, so
looking at the access list might be more future proof.

Fixes PR48072.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D90784

18 months ago[OpenCL] Support vec_step in C++ for OpenCL mode
Sven van Haastregt [Thu, 5 Nov 2020 12:02:59 +0000 (12:02 +0000)]
[OpenCL] Support vec_step in C++ for OpenCL mode

Enable the vec_step builtin in C++ for OpenCL mode for compatibility
with OpenCL C.

Differential Revision: https://reviews.llvm.org/D90766

18 months ago[GlobalISel] ComputeKnownBits - use common KnownBits shift handling (PR44526)
Simon Pilgrim [Thu, 5 Nov 2020 11:52:07 +0000 (11:52 +0000)]
[GlobalISel] ComputeKnownBits - use common KnownBits shift handling (PR44526)

Convert GISelKnownBits.computeKnownBitsImpl shift handling to use the common KnownBits implementations, which makes use of the known leading/trailing bits for shifted values in cases where we don't know the shift amount value, as detailed in https://blog.regehr.org/archives/1709

Differential Revision: https://reviews.llvm.org/D90527

18 months ago[lsan] Disable some LSAN tests for arm-linux-gnueabi{hf}
Adhemerval Zanella [Mon, 2 Nov 2020 17:42:24 +0000 (14:42 -0300)]
[lsan] Disable some LSAN tests for arm-linux-gnueabi{hf}

The tests do not report the expected leak when issued with use_stack
or use_tls option equal to 0 on arm-linux-gnueabihf (ubuntu 18.04,
glibc 2.27).

This issue is being tracked by https://bugs.llvm.org/show_bug.cgi?id=48052

18 months ago[sanitizer] Assume getrandom might not be supported by the kernel
Adhemerval Zanella [Mon, 2 Nov 2020 17:38:12 +0000 (14:38 -0300)]
[sanitizer] Assume getrandom might not be supported by the kernel

It was added on kernel 3.17.

18 months ago[OpenMP] avoid warning: equality comparison with extraneous parentheses
Joachim Protze [Thu, 5 Nov 2020 09:50:17 +0000 (10:50 +0100)]
[OpenMP] avoid warning: equality comparison with extraneous parentheses

The macros are used in several places with an if(macro) pattern. This results
in several warnings about extraneous parenteses in equality comparison.

Having the constant at the lhs of the comparison, avoids this warning.

Differential Revision: https://reviews.llvm.org/D90756

18 months ago[SVE] Return StackOffset for TargetFrameLowering::getFrameIndexReference.
Sander de Smalen [Wed, 4 Nov 2020 08:56:54 +0000 (08:56 +0000)]
[SVE] Return StackOffset for TargetFrameLowering::getFrameIndexReference.

To accommodate frame layouts that have both fixed and scalable objects
on the stack, describing a stack location or offset using a pointer + uint64_t
is not sufficient. For this reason, we've introduced the StackOffset class,
which models both the fixed- and scalable sized offsets.

The TargetFrameLowering::getFrameIndexReference is made to return a StackOffset,
so that this can be used in other interfaces, such as to eliminate frame indices
in PEI or to emit Debug locations for variables on the stack.

This patch is purely mechanical and doesn't change the behaviour of how
the result of this function is used for fixed-sized offsets. The patch adds
various checks to assert that the offset has no scalable component, as frame
offsets with a scalable component are not yet supported in various places.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D90018

18 months agoRevert rGbbeb08497ce58 "Revert "[GlobalISel] GISelKnownBits::computeKnownBitsImpl...
Simon Pilgrim [Thu, 5 Nov 2020 10:39:53 +0000 (10:39 +0000)]
Revert rGbbeb08497ce58 "Revert "[GlobalISel] GISelKnownBits::computeKnownBitsImpl - Replace TargetOpcode::G_MUL handling with the common KnownBits::computeForMul implementation""

Updated the GISel KnownBits tests as KnownBits::computeForMul allows more accurate computation.

18 months ago[UnitTests] Add exhaustive tests for KnownBits shl/lshr/ashr
Simon Pilgrim [Wed, 4 Nov 2020 18:19:26 +0000 (18:19 +0000)]
[UnitTests] Add exhaustive tests for KnownBits shl/lshr/ashr

Thanks to @foad for the suggestion.

18 months ago[InstCombine] Remove orphan InstCombinerImpl method declarations. NFCI.
Simon Pilgrim [Wed, 4 Nov 2020 17:34:08 +0000 (17:34 +0000)]
[InstCombine] Remove orphan InstCombinerImpl method declarations. NFCI.

18 months ago[SyntaxTree] Add reverse links to syntax Nodes.
Eduardo Caldas [Tue, 27 Oct 2020 15:14:03 +0000 (15:14 +0000)]
[SyntaxTree] Add reverse links to syntax Nodes.

Children of a syntax tree had forward links only, because there was no
need for reverse links.

This need appeared when we started mutating the syntax tree.
On a forward list, to remove a target node in O(1) we need a pointer to the node before the target. If we don't have this "before" pointer, we have to find it, and that requires O(n).
So in order to remove a syntax node from a tree, we would similarly need to find the node before to then remove. This is both not ergonomic nor does it have a good complexity.

Differential Revision: https://reviews.llvm.org/D90240

18 months ago[mlir] Restructure C API tests for IR
Alex Zinenko [Wed, 4 Nov 2020 09:30:00 +0000 (10:30 +0100)]
[mlir] Restructure C API tests for IR

The test file is a long list of functions, followed by equally long FileCheck
comments inside "main". Distribute FileCheck comments closer to the functions
that produce the output we are checking.

Reviewed By: mehdi_amini, stellaraccident

Differential Revision: https://reviews.llvm.org/D90743

18 months ago[mlir][Linalg] Side effects interface for Linalg ops
Nicolas Vasilache [Thu, 5 Nov 2020 08:17:15 +0000 (08:17 +0000)]
[mlir][Linalg] Side effects interface for Linalg ops

The LinalgDependenceGraph and alias analysis provide the necessary analysis for the Linalg fusion on buffers case.

However this is not enough for linalg on tensors which require proper memory effects to play nicely with DCE and other transformations.
This revision adds side effects to Linalg ops that were previously missing and has 2 consequences:
1. one example in the copy removal pass now fails since the linalg.generic op has side effects and the pass does not perform alias analysis / distinguish between reads and writes.
2. a few examples in fusion-tensor.mlir need to return the resulting tensor otherwise DCE automatically kicks in as part of greedy pattern application.

Differential Revision: https://reviews.llvm.org/D90762

18 months ago[flang] update ODS syntax to use OpBuidlerDAG instead of OpBuilder
Alex Zinenko [Tue, 27 Oct 2020 11:59:22 +0000 (12:59 +0100)]
[flang] update ODS syntax to use OpBuidlerDAG instead of OpBuilder

Upstream MLIR has deprecated OpBuilder in ODS.

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90226

18 months ago[ARM] Make tests less dependent on scheduling. NFC
David Green [Thu, 5 Nov 2020 08:26:55 +0000 (08:26 +0000)]
[ARM] Make tests less dependent on scheduling. NFC

18 months ago[mlir][spirv] Add VectorExtractDynamicOp and vector.extractelement lowering
Artur Bialas [Thu, 5 Nov 2020 07:26:54 +0000 (08:26 +0100)]
[mlir][spirv] Add VectorExtractDynamicOp and vector.extractelement lowering

VectorExtractDynamicOp in SPIRV dialect
conversion from vector.extractelement to spirv VectorExtractDynamicOp

Differential Revision: https://reviews.llvm.org/D90679

18 months ago[mlir][spirv] Allow usage of vector size 8 and 16 with Vector16 capability
Artur Bialas [Thu, 5 Nov 2020 07:26:15 +0000 (08:26 +0100)]
[mlir][spirv] Allow usage of vector size 8 and 16 with Vector16 capability

Per spec, vector sizes 8 and 16 are allowed when Vector16 capability is present.
This change expands the limitation of vector sizes to accept these sizes.

Differential Revision: https://reviews.llvm.org/D90683

18 months ago[test] Add 'REQUIRES: bpf-registered-target' to bpf-O0.c
Arthur Eubanks [Thu, 5 Nov 2020 07:18:48 +0000 (23:18 -0800)]
[test] Add 'REQUIRES: bpf-registered-target' to bpf-O0.c

18 months ago[NFC] Fix cpplint warnings
Vitaly Buka [Thu, 5 Nov 2020 06:56:08 +0000 (22:56 -0800)]
[NFC] Fix cpplint warnings

18 months ago[LSAN] Fix compilation error on MSVC
Vitaly Buka [Thu, 5 Nov 2020 06:32:49 +0000 (22:32 -0800)]
[LSAN] Fix compilation error on MSVC

18 months agoRevert "[LSAN] Fix preprocessor condition for MSVC"
Vitaly Buka [Thu, 5 Nov 2020 06:31:36 +0000 (22:31 -0800)]
Revert "[LSAN] Fix preprocessor condition for MSVC"

Missread the error message. It was not the reason.

This reverts commit 2d041554d1f94abed3ddd396d8af944acf63fe4e.

18 months ago[LSAN] Fix preprocessor condition for MSVC
Vitaly Buka [Thu, 5 Nov 2020 06:27:35 +0000 (22:27 -0800)]
[LSAN] Fix preprocessor condition for MSVC

18 months ago[NewPM] Provide method to run all pipeline callbacks, used for -O0
Arthur Eubanks [Fri, 30 Oct 2020 16:35:32 +0000 (09:35 -0700)]
[NewPM] Provide method to run all pipeline callbacks, used for -O0

    Some targets may add required passes via
    TargetMachine::registerPassBuilderCallbacks(). We need to run those even
    under -O0. As an example, BPFTargetMachine adds
    BPFAbstractMemberAccessPass, a required pass.

    This also allows us to clean up BackendUtil.cpp (and out-of-tree Rust
    usage of the NPM) by allowing us to share added passes like coroutines
    and sanitizers between -O0 and other optimization levels.

    Tests are a continuation of those added in

    In order to prevent TargetMachines from adding unnecessary optimization
    passes at -O0, TargetMachine::registerPassBuilderCallbacks() will be
    changed to take an OptimizationLevel, but that will be done separately.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D89158

18 months ago[LSAN] Enabled only with __ANDROID_API__ >= 28
Vitaly Buka [Thu, 5 Nov 2020 05:42:51 +0000 (21:42 -0800)]
[LSAN] Enabled only with __ANDROID_API__ >= 28

Code does not work as-is with emulated tls even if
lsan is disabled with runtime flag.

18 months agoCapture the name for mlir::OpPassManager in std::string instead of StringRef (NFC)
Mehdi Amini [Thu, 5 Nov 2020 03:09:20 +0000 (03:09 +0000)]
Capture the name for mlir::OpPassManager in std::string instead of StringRef (NFC)

The previous behavior was fragile when building an OpPassManager using a
string, as it was forcing the client to ensure the string to outlive the
entire PassManager.
This isn't a performance sensitive area either that would justify
optimizing further.

18 months ago[sanitizers] Add missing definition
Vy Nguyen [Thu, 5 Nov 2020 05:19:38 +0000 (00:19 -0500)]
[sanitizers] Add missing definition

Fix breakages from https://reviews.llvm.org/D90811


Differential Revision: https://reviews.llvm.org/D90818

18 months ago[Driver] Add callback to Command execution
Serge Pavlov [Fri, 24 Apr 2020 05:48:39 +0000 (12:48 +0700)]
[Driver] Add callback to Command execution

Object of type `Compilation` now can keep a callback that is called
after each execution of `Command`. This must simplify adaptation of
clang in custom distributions and allow facilities like collection of
execution statistics.

Reviewers: rsmith, rjmccall, Eugene.Zelenko

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78899

18 months agoRevert "[SCEV] Handle non-positive case in isImpliedViaOperations"
Max Kazantsev [Thu, 5 Nov 2020 04:27:23 +0000 (11:27 +0700)]
Revert "[SCEV] Handle non-positive case in isImpliedViaOperations"

This reverts commit 8dc98897c4af20aeb52f1f19f538c08e55793283.

Commited by mistake.

18 months ago[MachineSink] add more profitable pattern.
Chen Zheng [Tue, 22 Sep 2020 00:33:05 +0000 (20:33 -0400)]
[MachineSink] add more profitable pattern.

Add more profitable sinking patterns if the target bb register pressure
is not too high.

Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D88126

18 months ago[SCEV] Handle non-positive case in isImpliedViaOperations
Max Kazantsev [Thu, 5 Nov 2020 03:30:42 +0000 (10:30 +0700)]
[SCEV] Handle non-positive case in isImpliedViaOperations

We already handle non-negative case there. Add support for non-positive.

18 months agoRecommit "[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i...
Craig Topper [Thu, 5 Nov 2020 03:55:52 +0000 (19:55 -0800)]
Recommit "[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i-double-softfloat.ll. NFC""

With new test file this time.

Original message

This new test covers both with and without the F extension enabled.

This shows that the fptosi/fptoui for double->i32 use a different
libcall depending on whether the F extension is enabled. If it's
not enabled we use the 'si' library call. If it is enabled we use 'di'.

18 months agoRevert "[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i...
Craig Topper [Thu, 5 Nov 2020 03:55:13 +0000 (19:55 -0800)]
Revert "[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i-double-softfloat.ll. NFC"

I failed to git add the new test file.

This reverts commit 36072cc0a487fb5ad315d264064daa73d916469c.

18 months ago[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i-double...
Craig Topper [Thu, 5 Nov 2020 03:51:43 +0000 (19:51 -0800)]
[RISCV] Move some test cases from rv64i-single-softfloat.ll to a new rv64i-double-softfloat.ll. NFC

This new test covers both with and without the F extension enabled.

This shows that the fptosi/fptoui for double->i32 use a different
libcall depending on whether the F extension is enabled. If it's
not enabled we use the 'si' library call. If it is enabled we use 'di'.

18 months ago[LangRef] Adds llvm.loop.mustprogress loop metadata
Atmn Patel [Thu, 5 Nov 2020 03:30:58 +0000 (22:30 -0500)]
[LangRef] Adds llvm.loop.mustprogress loop metadata

This patch adds the llvm.loop.mustprogress loop metadata. This is to be
added to loops where the frontend language requires that the loop makes
observable interactions with the environment. This is the loop-level
equivalent to the function attribute `mustprogress` defined in D86233.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D88464

18 months ago[sanitizer] Fix -fno-emulated-tls setup
Vitaly Buka [Thu, 5 Nov 2020 03:22:28 +0000 (19:22 -0800)]
[sanitizer] Fix -fno-emulated-tls setup


18 months ago[NFC] Extract InitializePlatformCommonFlags
Vitaly Buka [Thu, 5 Nov 2020 02:52:15 +0000 (18:52 -0800)]
[NFC] Extract InitializePlatformCommonFlags

And move some Android specifi declarations from headers

Differential Revision: https://reviews.llvm.org/D90811

18 months ago[lsan] Remove unnecessary elf-tls condition
Vy Nguyen [Thu, 5 Nov 2020 02:09:36 +0000 (21:09 -0500)]
[lsan] Remove unnecessary elf-tls condition

Differential Revision: https://reviews.llvm.org/D90808

18 months ago[clang] Add mustprogress and llvm.loop.mustprogress attribute deduction
Atmn Patel [Mon, 2 Nov 2020 21:03:21 +0000 (16:03 -0500)]
[clang] Add mustprogress and llvm.loop.mustprogress attribute deduction

Since C++11, the C++ standard has a forward progress guarantee
[intro.progress], so all such functions must have the `mustprogress`
requirement. In addition, from C11 and onwards, loops without a non-zero
constant conditional or no conditional are also required to make
progress (C11 6.8.5p6). This patch implements these attribute deductions
so they can be used by the optimization passes.

Differential Revision: https://reviews.llvm.org/D86841

18 months ago[sanitizer] Quick fix for non-Linux build
Vitaly Buka [Thu, 5 Nov 2020 02:34:19 +0000 (18:34 -0800)]
[sanitizer] Quick fix for non-Linux build

18 months ago[LSAN] Fix CAN_SANITIZE_LEAKS on Android
Vitaly Buka [Thu, 5 Nov 2020 02:28:51 +0000 (18:28 -0800)]

18 months ago[mlir] Change deprecated -Werror-implicit-function-declaration to -Werror=implicit...
Fangrui Song [Thu, 5 Nov 2020 02:33:51 +0000 (18:33 -0800)]
[mlir] Change deprecated -Werror-implicit-function-declaration to -Werror=implicit-function-declaration

This -Werror- form has been deprecated since 2007 (GCC r122017).

And only enable it for CMAKE_C_FLAGS. C++ does not need it.

18 months ago[flang][openacc] Lower wait directive
Valentin Clement [Thu, 5 Nov 2020 02:15:35 +0000 (21:15 -0500)]
[flang][openacc] Lower wait directive

This patch upstream the lowering of Wait directive that was initially done in

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90489

18 months agoReland [lsan] Enable LSAN for Android
Vy Nguyen [Wed, 4 Nov 2020 22:09:08 +0000 (14:09 -0800)]
Reland [lsan] Enable LSAN for Android

Reland: a2291a58bf1c860d026581fee6fe96019dc25440.

New fixes for the breakages reported in D85927 include:
 - declare a weak decl for `dl_iterate_phdr`, because it does not exist on older  APIs
 - Do not enable leak-sanitizer if api_level is less than 29, because of  `ld.lld: error: undefined symbol: __aeabi_read_tp` for armv7, API level 16.
 - Put back the interceptor for `memalign` but still opt out intercepting `__libc_memalign` and `cfree` because both of these don't exist in Bionic.

Reviewed By: srhines, vitalybuka

Differential Revision: https://reviews.llvm.org/D89251

18 months ago[X86] Enable shrink-wrapping for no-frame-pointer non-nounwind functions on platforms...
Fangrui Song [Thu, 5 Nov 2020 00:51:48 +0000 (16:51 -0800)]
[X86] Enable shrink-wrapping for no-frame-pointer non-nounwind functions on platforms not using compact unwind

The current compact unwind scheme does not work when the prologue is not at the
start (the instructions before the prologue cannot be described).  (Technically
this is fixable, but it requires multiple compact unwind descriptors for one

rL255175 chose to not perform shrink-wrapping for no-frame-pointer functions not
marked as nounwind to work around PR25614. This is overly limited, as platforms
not supporting compact unwind (all non-Darwin) does not need the workaround.
This patch restricts the limitation to compact unwind platforms.

Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D89930

18 months ago[sanitizer] Allow preinit array on Android
Vy Nguyen [Wed, 4 Nov 2020 22:09:08 +0000 (14:09 -0800)]
[sanitizer] Allow preinit array on Android

Extracted from D89251

18 months ago[flang][openacc] Lower init and shutdown directive
Valentin Clement [Thu, 5 Nov 2020 00:30:39 +0000 (19:30 -0500)]
[flang][openacc] Lower init and shutdown directive

This patch upstream the lowering of Init and Shutdown directives that was initially done in

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90488

18 months ago[MLIR][NFC] Update syntax of global_memref in ODS description.
Rahul Joshi [Wed, 4 Nov 2020 21:43:57 +0000 (13:43 -0800)]
[MLIR][NFC] Update syntax of global_memref in ODS description.

- The ODS description was using an old syntax that was updated during the review.
  This fixes the ODS description to match the current syntax.

Differential Revision: https://reviews.llvm.org/D90797

18 months ago[NFC][sanitizer] Reformat some code
Vitaly Buka [Wed, 4 Nov 2020 23:37:48 +0000 (15:37 -0800)]
[NFC][sanitizer] Reformat some code

Extracted from D89251

18 months ago[PowerPC] Add Sema checks for MMA types
Baptiste Saleil [Wed, 4 Nov 2020 23:00:48 +0000 (17:00 -0600)]
[PowerPC] Add Sema checks for MMA types

The use of the new types introduced for PowerPC MMA instructions needs to be restricted.
We add a PowerPC function checking that the given type is valid in a context in which we don't allow MMA types.
This function is called from various places in Sema where we want to prevent the use of these types.

Differential Revision: https://reviews.llvm.org/D82035

18 months agoFix UB in one libcxx test, when deleting D through a pointer to B.
Arthur O'Dwyer [Wed, 4 Nov 2020 22:34:05 +0000 (17:34 -0500)]
Fix UB in one libcxx test, when deleting D through a pointer to B.

This undefined behavior was found by applying Lénárd Szolnoki's proposal
to disable implicit conversion of default_delete<D> to default_delete<B>.

The offending part of the test is circa line 243.

The wording that makes it undefined behavior is http://eel.is/c++draft/expr.delete#3 .

Differential Revision: https://reviews.llvm.org/D90536

18 months ago[sanitizer] Get Android API from --target
Vitaly Buka [Wed, 4 Nov 2020 21:10:17 +0000 (13:10 -0800)]
[sanitizer] Get Android API from --target

Depends on D90792.

Differential Revision: https://reviews.llvm.org/D90793

18 months ago[NFC][LSAN] Remove unused variable
Vitaly Buka [Wed, 4 Nov 2020 21:09:09 +0000 (13:09 -0800)]
[NFC][LSAN] Remove unused variable

Depends on D90791.

Differential Revision: https://reviews.llvm.org/D90792

18 months ago[NFC] Fix comment in test
Vitaly Buka [Wed, 4 Nov 2020 21:06:59 +0000 (13:06 -0800)]
[NFC] Fix comment in test

Differential Revision: https://reviews.llvm.org/D90790

18 months agoBasic: Change Module::Umbrella to a PointerUnion, NFC
Duncan P. N. Exon Smith [Thu, 29 Oct 2020 19:14:30 +0000 (15:14 -0400)]
Basic: Change Module::Umbrella to a PointerUnion, NFC

Change `Module::Umbrella` from a `const void *` to a `PointerUnion` of
`FileEntry` and `DirectoryEntry`. We can drop the `HasUmbrellaDir` bit
(since `PointerUnion` includes that).

This change makes it safer to update to `FileEntryRef` and
`DirectoryEntryRef` in a future patch.

Differential Revision: https://reviews.llvm.org/D90481

18 months agoReland [NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback
Arthur Eubanks [Wed, 4 Nov 2020 18:14:37 +0000 (10:14 -0800)]
Reland [NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback

This allows targets to skip optional optimization passes at -O0.

Reviewed By: ychen

Differential Revision: https://reviews.llvm.org/D90777

18 months agoRevert "[NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback"
Arthur Eubanks [Wed, 4 Nov 2020 20:57:32 +0000 (12:57 -0800)]
Revert "[NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback"

This reverts commit 7a83aa0520d24ee5285a9c60b97b57a1db1d65e8.

Causing buildbot failures.

18 months ago[NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback
Arthur Eubanks [Wed, 4 Nov 2020 18:14:37 +0000 (10:14 -0800)]
[NewPM] Add OptimizationLevel param to registerPipelineStartEPCallback

This allows targets to skip optional optimization passes at -O0.

Reviewed By: ychen

Differential Revision: https://reviews.llvm.org/D90777

18 months ago[crashlog] Pass the debugger around instead of relying on lldb.debugger
Jonas Devlieghere [Wed, 4 Nov 2020 20:50:38 +0000 (12:50 -0800)]
[crashlog] Pass the debugger around instead of relying on lldb.debugger

The lldb.debugger et al convenience variables are only available from
the interactive script interpreter. In all other scenarios, they are
None (since fc1fd6bf9fcfac412b10b4193805ec5de0e8df57) before that they
were default initialized.

The crashlog script was hacking around that by setting the lldb.debugger
to a newly created debugger instance when running outside of the script
interpreter, which works fine until lldb creates a script interpreter
instance under the hood and clears the variables. This was resulting in
an AttributeError when invoking the script directly (from outside of

  AttributeError: 'NoneType' object has no attribute 'GetSourceManager'

This patch fixes that by passing around the debugger instance.


Differential revision: https://reviews.llvm.org/D90706

18 months ago[flang][openacc] Lower update directive
Valentin Clement [Wed, 4 Nov 2020 20:47:40 +0000 (15:47 -0500)]
[flang][openacc] Lower update directive

This patch upstream the lowering of Update directive that was initially done in

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90472

18 months agoFix -Wsign-compare issue in MasmParser.cpp
Eric Astor [Wed, 4 Nov 2020 20:43:18 +0000 (15:43 -0500)]
Fix -Wsign-compare issue in MasmParser.cpp

18 months ago[ms] [llvm-ml] Lex MASM strings, including escaping
Eric Astor [Wed, 4 Nov 2020 20:28:22 +0000 (15:28 -0500)]
[ms] [llvm-ml] Lex MASM strings, including escaping

Allow single-quoted strings and double-quoted character values, as well as doubled-quote escaping.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D89731

18 months ago[SelectionDAG] Add legalizations for VECREDUCE_SEQ_FMUL
Cameron McInally [Wed, 4 Nov 2020 20:16:49 +0000 (14:16 -0600)]
[SelectionDAG] Add legalizations for VECREDUCE_SEQ_FMUL

Hook up legalizations for VECREDUCE_SEQ_FMUL. This is following up on the VECREDUCE_SEQ_FADD work from D90247.

Differential Revision: https://reviews.llvm.org/D90644

18 months ago[NFC] Use Register/MCRegister
Mircea Trofin [Tue, 3 Nov 2020 23:20:40 +0000 (15:20 -0800)]
[NFC] Use Register/MCRegister

Differential Revision: https://reviews.llvm.org/D90724

18 months ago[flang][openacc] Lower enter data directive
Valentin Clement [Wed, 4 Nov 2020 20:17:15 +0000 (15:17 -0500)]
[flang][openacc] Lower enter data directive

This patch upstream the lowering of Enter Data directive that was initially done in

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90470

18 months ago[lld][ELF][test] test LTO-removed symbols are not in symtab
Edd Dawson [Tue, 3 Nov 2020 14:11:21 +0000 (14:11 +0000)]
[lld][ELF][test] test LTO-removed symbols are not in symtab

Differential Revision: https://reviews.llvm.org/D90680

18 months ago[libc++] Remove stray setting of use_system_cxx_lib left behind
Louis Dionne [Wed, 4 Nov 2020 20:01:59 +0000 (15:01 -0500)]
[libc++] Remove stray setting of use_system_cxx_lib left behind

18 months ago[libc++] Move availability-related Lit configuration to the DSL
Louis Dionne [Wed, 4 Nov 2020 19:46:25 +0000 (14:46 -0500)]
[libc++] Move availability-related Lit configuration to the DSL

The implementation is not really satisfactory, but it's better than
being in the legacy config, which causes other issues.

18 months ago[RISCV] Remove assertsexti32 from fslw/fsrw isel patterns.
Craig Topper [Wed, 4 Nov 2020 19:37:58 +0000 (11:37 -0800)]
[RISCV] Remove assertsexti32 from fslw/fsrw isel patterns.

The operations in these patterns shouldn't be effected by sign
bits. And the pattern is starting from a sign_extend_inreg so
we aren't expecting sign bits to be passed through either.

Differential Revision: https://reviews.llvm.org/D90739

18 months ago[flang][openacc] Lower exit data directive
Valentin Clement [Wed, 4 Nov 2020 19:34:23 +0000 (14:34 -0500)]
[flang][openacc] Lower exit data directive

This patch upstream the lowering of Exit Data construct that was initially done in

Reviewed By: schweitz

Differential Revision: https://reviews.llvm.org/D90467

18 months ago[MemorySSA] Use provided memory location even if instruction is call
Nikita Popov [Sat, 3 Oct 2020 15:28:12 +0000 (17:28 +0200)]
[MemorySSA] Use provided memory location even if instruction is call

If getClobberingMemoryAccess() is called with an explicit
MemoryLocation, but the starting access happens to be a call, the
provided location is currently ignored, and alias analysis queries
will be performed against the call instruction instead. Something
similar happens if the starting access is a load with a MemoryDef.

Change the implementation to not set Q.Inst in the first place if
we want to perform a MemoryLocation-based query, to make sure it
can't be turned into an Instruction-based query along the way...

Additionally, remove the special handling that lifetime.start
intrinsics currently get. They simply report NoAlias for clobbers
between lifetime.start and other calls, but that's obviously not
right if the other call is something like a memset or memcpy. The
default behavior we get from getModRefInfo() will already do the
right thing here.

Differential Revision: https://reviews.llvm.org/D88782

18 months agoAdd info about the cherry-picked commit and contributor
Steven Wan [Wed, 4 Nov 2020 18:40:02 +0000 (13:40 -0500)]
Add info about the cherry-picked commit and contributor

18 months ago[PowerPC] Rename mftbl to mftb
Steven Wan [Thu, 15 Oct 2020 22:16:09 +0000 (18:16 -0400)]
[PowerPC] Rename mftbl to mftb

`mftb` and `mftbl` are equivalent, there is no need to have two names for doing the same thing, rename `mftbl` to only have `mftb`.

Differential Revision: https://reviews.llvm.org/D89506

18 months ago[mlir][std] Add SignedCeilDivIOp and SignedFloorDivIOp with std to std lowering trigg...
Alexandre Eichenberger [Wed, 4 Nov 2020 18:51:10 +0000 (13:51 -0500)]
[mlir][std] Add SignedCeilDivIOp and SignedFloorDivIOp with std to std lowering triggered by -std-expand-divs option. The new operations support positive/negative nominator/denominator numbers.

Differential Revision: https://reviews.llvm.org/D89726

Signed-off-by: Alexandre Eichenberger <alexe@us.ibm.com>
18 months ago[RISCV] Correct the operand order for fshl/fshr to fsl/fsr instructions.
Craig Topper [Wed, 4 Nov 2020 19:01:52 +0000 (11:01 -0800)]
[RISCV] Correct the operand order for fshl/fshr to fsl/fsr instructions.

fsl/fsr take their shift amount in $rs2 or an immediate. The
sources are $rs1 and $rs3.

fshl/fshr ISD opcodes both concatenate operand 0 in the high bits and
operand 1 in the lower bits. fshl returns the high bits after
shifting and fshr returns the low bits. So a shift amount of 0
returns operand 0 for fshl and operand 1 for fshr.

fsl/fsr concatenate their operands in different orders such that
$rs1 will be returned for a shift amount of 0. So $rs1 needs to
come from operand 0 of fshl and operand 1 of fshr.

Differential Revision: https://reviews.llvm.org/D90735

18 months agoBasic: Split out DirectoryEntry.h, NFC
Duncan P. N. Exon Smith [Thu, 29 Oct 2020 19:11:40 +0000 (15:11 -0400)]
Basic: Split out DirectoryEntry.h, NFC

Move `DirectoryEntry` and `DirectoryEntryRef` into their own header,
similar to the creation of FileEntry.h. No functionality change here,
just preparing to include it in more places to allow wider adoption of
`DirectoryEntryRef` without requiring all of `FileManager.h`.

Differential Revision: https://reviews.llvm.org/D90478

18 months ago[DAGCombine] Fix bug in load scalarization
Fraser Cormack [Tue, 21 Apr 2020 15:23:11 +0000 (16:23 +0100)]
[DAGCombine] Fix bug in load scalarization

For vector element types which are not byte-sized, we would generate
incorrect scalar offsets and produce incorrect codegen.

This optimization could potentially be supported in the future, e.g. by
loading in bytes, then shifting and masking out the remaining bits of
the vector element. However, without an upstream target to test against
it's best to avoid the bad codegen in the simplest possible way.

Related to this bug:


Reviewed by: foad

Differential Revision: https://reviews.llvm.org/D78568

18 months ago[libc++] NFC: Remove trailing whitespace
Louis Dionne [Wed, 4 Nov 2020 19:07:59 +0000 (14:07 -0500)]
[libc++] NFC: Remove trailing whitespace

18 months agoRefactor PyPrintAccumulatorm, PyFileAccumulator, and PySinglePartStringAccumulator...
Mehdi Amini [Wed, 4 Nov 2020 06:26:46 +0000 (06:26 +0000)]
Refactor PyPrintAccumulatorm, PyFileAccumulator, and PySinglePartStringAccumulator from IRModules.cpp to PybindUtils.h

These are reusable utilities across bindings.

Differential Revision: https://reviews.llvm.org/D90737

18 months agoMove MlirStringCallback declaration from mlir-c/IR.h to mlir-c/Support.h (NFC)
Mehdi Amini [Wed, 4 Nov 2020 06:25:05 +0000 (06:25 +0000)]
Move MlirStringCallback declaration from mlir-c/IR.h to mlir-c/Support.h (NFC)

This is a generic utility that can be reused beyond the IR bindings.

Differential Revision: https://reviews.llvm.org/D90736

18 months ago[OpenMP] target nested `use_device_ptr() if()` and is_device_ptr trigger asserts
cchen [Wed, 4 Nov 2020 18:36:38 +0000 (12:36 -0600)]
[OpenMP] target nested `use_device_ptr() if()` and is_device_ptr trigger asserts

Clang now asserts for the below case:
void clang::CodeGen::CGOpenMPRuntime::createOffloadEntriesAndInfoMetadata(): Assertion `std::get<0>(E) && "All ordered entries must exist!"' failed.

The reason why Clang hit the assert is because in
`emitTargetDataCalls`, both `BeginThenGen` and `BeginElseGen` call
`registerTargetRegionEntryInfo` and try to register the Entry in
OffloadEntriesTargetRegion with same key. If changing the expression in
if clause to any constant expression, then the assert disappear. (https://godbolt.org/z/TW7haj)

The assert itself is to avoid
user from accessing elements out of bound inside `OrderedEntries` in

In this patch, I add a check in `registerTargetRegionEntryInfo` to avoid
register the target region more than once.

A test case that triggers assert: https://godbolt.org/z/4cnGW8

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D90704

18 months ago[RISCV] Remove assertsexti32 from inputs to riscv_sllw/srlw nodes in B extension...
Craig Topper [Wed, 4 Nov 2020 18:35:05 +0000 (10:35 -0800)]
[RISCV] Remove assertsexti32 from inputs to riscv_sllw/srlw nodes in B extension isel patterns.

riscv_sllw/srlw only reads the lower 32 bits of the first operand.
And the lower 5 bits of the second operands. Whether the upper
32 bits of the input are sign bits or not doesn't matter.

Also use ineg and not to shorten the patterns.

Differential Revision: https://reviews.llvm.org/D90668

18 months ago[MLIR] Refactor memref type -> LLVM Type conversion
Rahul Joshi [Wed, 4 Nov 2020 16:14:05 +0000 (08:14 -0800)]
[MLIR] Refactor memref type -> LLVM Type conversion

- Eliminate duplicated information about mapping from memref -> its descriptor fields
  by consolidating that mapping in two functions:  getMemRefDescriptorFields and
- Change convertMemRefType() and convertUnrankedMemRefType() to use these
- Remove convertMemrefSignature and convertUnrankedMemrefSignature.

Differential Revision: https://reviews.llvm.org/D90707

18 months ago[MLIR] Remove NoSideEffect from std.global_memref op.
Rahul Joshi [Wed, 4 Nov 2020 16:20:46 +0000 (08:20 -0800)]
[MLIR] Remove NoSideEffect from std.global_memref op.

- Also spell "isUninitialized" correctly.

Differential Revision: https://reviews.llvm.org/D90768