Fix the ARM backend's analyzeBranch so it doesn't ignore predicated
return instructions, and make the MachineVerifier rule more strict.

Differential Revision: https://reviews.llvm.org/D40061

Summary: It was passing on my local machine due to previously-written
files cached in the test output folder.

This patch introduces a hook to encode descriptor set
and binding number into `spv.globalVariable`'s symbolic name. This
allows to preserve this information, and at the same time legalize
the global variable for the conversion to LLVM dialect.

This is required for `mlir-spirv-cpu-runner` to convert kernel
arguments into LLVM.

Also, a couple of some nits added:
- removed unused comment
- changed to a capital letter in the comment

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D86515

Previously a NodeRole would generally be prefixed with the `NodeKind`,
we remove this prefix, as it we redundant and made tests more noisy.

Differential Revision: https://reviews.llvm.org/D86636

This makes OpPassManager more of a "container" of passes and not responsible to drive the execution.
As such we also make it constructible publicly, which will allow to build arbitrary pipeline decoupled from the execution. We'll make use of this facility to expose "dynamic pipeline" in the future.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D86391

This patch updates the type conversion section of the documentation.
It includes the modelling of array strides and the mapping of the
naturally padded structs.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D86674

This happens when generating a huge file by LTO, for example, with -gmlt.
When BitNo is > 2^35, ByteNo is overflowed, and an incorrect output offset is overwritten.
This generates ill-formed bitcodes.

Reviewed-by: tejohnson, vitalybuka

Differential Revision: https://reviews.llvm.org/D86645

This patch adds an optional name to SPIR-V module.
This will help with lowering from GPU dialect (so that we
can pass the kernel module name) and will be more naturally
aligned with `GPUModuleOp`/`ModuleOp`.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D86386

This patch implements the function prototypes vec_mulh and vec_dive in order to
utilize the vector multiply high (vmulh[s|u][w|d]) and vector divide extended
(vdive[s|u][w|d]) instructions introduced in Power10.

Differential Revision: https://reviews.llvm.org/D82609

error message

/usr/bin/ld: CMakeFiles/mlir-opt.dir/mlir-opt.cpp.o: in function `main':
mlir-opt.cpp:(.text.startup.main+0xb9): undefined reference to `mlir::registerTestDialect(mlir::DialectRegistry&)'

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D86592

Differential Revision: https://reviews.llvm.org/D86640

Previously, we were only emitting regular bindings to weak
dynamic symbols; this diff adds support for the weak bindings too, which
can overwrite the regular bindings at runtime. We also treat weak
defined global symbols similarly -- since they can also be interposed at
runtime, they need to be treated as potentially dynamic symbols.

Note that weak bindings differ from regular bindings in that they do not
specify the dylib to do the lookup in (i.e. weak symbol lookup happens
in a flat namespace.)

Differential Revision: https://reviews.llvm.org/D86572

Previously, the BindingEntry struct could only store bindings to offsets
within InputSections. Since the GOTSection and TLVPointerSections are
OutputSections, I handled those in a separate code path. However, this
makes it awkward to support weak bindings properly without code
duplication. This diff allows BindingEntries to point directly to
OutputSections, simplifying the upcoming weak binding implementation.

Along the way, I also converted a bunch of functions taking references
to symbols to take pointers instead. Given how much casting we do for
Symbol (especially in the upcoming weak binding diffs), it's cleaner
this way.

Differential Revision: https://reviews.llvm.org/D86571

It's roughly like -force_load with some filtering.

Differential Revision: https://reviews.llvm.org/D86181

The re-exports list in a TAPI document can either refer to other inlined
TAPI documents, or to on-disk files (which may themselves be TBD or
regular files.) Similarly, the re-exports of a regular dylib can refer
to a TBD file.

Differential Revision: https://reviews.llvm.org/D85404

Two things needed fixing for that to work:

1. getName() no longer returns null for DylibFiles constructed from TAPIs
2. markSubLibrary() now accepts .tbd as a possible extension

Differential Revision: https://reviews.llvm.org/D86180

This matches ld64's behavior

Differential Revision: https://reviews.llvm.org/D85992

Differential Revision: https://reviews.llvm.org/D86255

 * When _LIBUNWIND_SUPPORT_COMPACT_UNWIND is defined in config.h,
   define it to "1" like the other macros. These macros are still
   checked using "#if defined(...)", however.

 * Include libunwind.h in AddressSpace.hpp before using
   _LIBUNWIND_ARM_EHABI.

 * Rename ProcessFrameHeaderCache to TheFrameHeaderCache, because some
   configurations (e.g. Android / hermetic static libraries) can have
   one cache per shared object in the process. (When there are more
   copies, it's more important not to waste memory in the cache.)

 * Add 3 missing header files to LIBUNWIND_HEADERS.

Differential Revision: https://reviews.llvm.org/D86254

I forgot to squash this with 0b7f6cc7

AArch64, X86 and Mips currently directly consumes these and custom
lowering to produce a libcall, but really these should follow the
normal legalization process through the libcall/lower action.

This will make stateful registrars (e.g. a future TargetProcessControl based
registrar) easier to deal with.

Summary:

This patch changes the libomptarget runtime to always emit debug messages that
occur before offloading failure. The goal is to provide users with information
about why their application failed in the target region rather than a single
failure message. This is only done in regions that precede offloading failure
so this should not impact runtime performance. if the debug environment
variable is set then the message is forwarded to the debug output as usual.

A new environment variable was added for future use but does nothing in this
current patch. LIBOMPTARGET_INFO will be used to report runtime information to
the user if requrested, such as grid size, SPMD usage, or data mapping. It will
take an integer indicating the level of information verbosity and a value of 0
will disable it.

Reviewers: jdoerfort

Subscribers: guansong sstefan1 yaxunl ye-luo

Tags: #OpenMP

Differential Revision: https://reviews.llvm.org/D86483

Caused by https://reviews.llvm.org/D85159

As discussed in
http://lists.llvm.org/pipermail/llvm-dev/2020-July/143801.html.

Currently no users outside of unit tests.

Replace all instances in tests of -constprop with -instsimplify.
Notable changes in tests:
* vscale.ll - @llvm.sadd.sat.nxv16i8 is evaluated by instsimplify, use a fake intrinsic instead
* InsertElement.ll - insertelement undef is removed by instsimplify in @insertelement_undef
llvm/test/Transforms/ConstProp moved to llvm/test/Transforms/InstSimplify/ConstProp

Reviewed By: lattner, nikic

Differential Revision: https://reviews.llvm.org/D85159

Breakpad creates minidump files that can a module loaded multiple times. We found that when a process mmap's the object file for a library, this can confuse breakpad into creating multiple modules in the module list. This patch fixes the GetFilteredModules() to check the linux maps for permissions and use the one that has execute permissions. Typically when people mmap a file into memory they don't map it as executable. This helps people to correctly load minidump files for post mortem analysis.

Differential Revision: https://reviews.llvm.org/D86375

Clang now defaults to -march=pentium4 -mtune=generic so we don't
need modern tune settings on pentium4.

Summary:
When looking for all reaching definitions, we sort basic blocks on dominance. When sorting looking for properlyDominates() handles the case A == B.

Authored by: pranavb

Differential Revision: https://reviews.llvm.org/D86661

[X86] Default to -mtune=generic unless -march is passed to the driver. Add TuneCPU to the AST serialization

This patch defaults to -mtune=generic unless -march is present. If -march is present we'll use the empty string unless its overridden by mtune. The back should use the target cpu if the tune-cpu isn't present.

It also adds AST serialization support to fix some tests that emit AST and parse it back. These tests diff the IR against the output from not going through AST. So if we don't serialize the tune CPU we fail the diff.

Differential Revision: https://reviews.llvm.org/D86488

As discussed in D86576, noundef attribute is removed from masked store/load/gather/scatter's
pointer operands.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D86656

It was added for GISel, but SDAG could use it too!

According to the current LangRef, Memset/memcpy/memmove can take a
null/dangling pointer if the size is zero.
(Relevant thread: http://lists.llvm.org/pipermail/llvm-dev/2017-July/115665.html )
This patch expands it and allows the functions to take undef/poison pointers
too.

This required the updates in the align attribute since it isn't specified
what is the alignment of undef/poison pointers.
This patch states that their alignment is 1.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D86643

Based on the RFC discussed here:
https://llvm.discourse.group/t/rfc-vector-standard-add-bitcast-operation/1628/

Adding a vector.bitcast operation that allows casting to a vector of different
element type. The most minor dimension bitwidth must stay unchanged.

Differential Revision: https://reviews.llvm.org/D86580