Changes

[lldb] Only run the shell test for the Xcode standalone build

[Hexagon] Add support for Hexagon v67t microarchitecture (tiny core)

[lldb/Initializers] Move all macOS initializers into PlatformMacOSX
PlatformMacOSX is the main entry point to the plugin with the same name. 
This is part of a greater refactoring to auto generate the initializers.
Differential revision: https://reviews.llvm.org/D73116

[HIP] use GetProgramPath for executable discovery
This change replaces the manual building of executable paths using
llvm::sys::path::append with GetProgramPath. This enables adding other
paths in case executables reside in different directories and makes the
code easier to read.
Differential Revision: https://reviews.llvm.org/D72903

[FPEnv][SystemZ] Platform-specific builtin constrained FP enablement
When constrained floating point is enabled the SystemZ-specific builtins 
don't use constrained intrinsics in some cases. Fix that.
Differential Revision: https://reviews.llvm.org/D72722

[StackColoring] Remap PseudoSourceValue frame indices via
MachineFunction::getPSVManager()
Reviewed By: dantrushin
Differential Revision: https://reviews.llvm.org/D73063

[lldb/Hexagon] Include <mutex>
Fixes compiler error on macOS: error: no type named 'mutex' in namespace
'std'.

[PowerPC] Delete PPCSubtarget::isDarwin and isDarwinABI
http://lists.llvm.org/pipermail/llvm-dev/2018-August/125614.html
developers have agreed to remove Darwin support from POWER backends.
Reviewed By: sfertile
Differential Revision: https://reviews.llvm.org/D72067

[lldb/tools] Update lldb-test's system initializer
After a731c6ba94d0 the initializer only has to call the PlatformMacOSX 
to initialize all the macOS platforms.

[Codegen] Emit both AssumeAlignedAttr and AllocAlignAttr assumptions if
they exist
Summary: We shouldn't be just giving up if we find one of them
(like we currently do with `AssumeAlignedAttr`), we should emit them
all.
As the tests show, even if we materialized good knowledge from
`__attribute__((assume_aligned(32)`, it doesn't mean
`__attribute__((alloc_align([...])))` info won't be useful. It might be,
but that isn't given.
Reviewers: erichkeane, jdoerfert, aaron.ballman
Reviewed By: erichkeane
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D72979

[NFC][Codegen] Use MaybeAlign + APInt::getLimitedValue() when creating
Alignment attr
Summary: Just an NFC code cleanup i stumbled upon when stumbling through
clang alignment attribute handling.
Reviewers: erichkeane, gchatelet, courbet, jdoerfert
Reviewed By: gchatelet
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D72993

[APFloat] Extend conversion from special strings
Add support for converting Signaling NaN, and a NaN Payload from string.
The NaNs (the string "nan" or "NaN") may be prefixed with 's' or 'S' for
defining a Signaling NaN.
A payload for a NaN can be specified as a suffix. It may be a
octal/decimal/hexadecimal number in parentheses or without.
Differential Revision: https://reviews.llvm.org/D69773

[OpenMP][Offloading] Fix the issue that omp_get_num_devices returns
wrong number of devices, by Shiley Tian.
Summary: This patch is to fix issue in the following simple case:
  #include <omp.h>
 #include <stdio.h>
  int main(int argc, char *argv[]) {
   int num = omp_get_num_devices();
   printf("%d\n", num);
    return 0;
 }
Currently it returns 0 even devices exist. Since this file doesn't
contain any target region, the host entry is empty so further actions
like initialization will not be proceeded, leading to wrong device
number returned by runtime function call.
Reviewers: jdoerfert, ABataev, protze.joachim
Reviewed By: ABataev
Subscribers: protze.joachim
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D72576

[APFloat][unittest] Fix -Wunused-variable after D69773

[Attr][Doc][NFC] Fix code snippet formatting for attribute documentation
Reviewers: aaron.ballman, Fznamznon
Subscribers: ebevhan, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D73104

[debugserver] Delete macOS/PPC debug server implementation
macOS/PPC support was dropped in 10.6 (Snow Leopard).
Differential Revision: https://reviews.llvm.org/D69524

[APFloat] Add support for operations on Signaling NaN
Fix PR30781
Differential Revision: https://reviews.llvm.org/D69774

[debugserver] Delete stale code referencing ppc

[TableGen] Use a table to lookup MVE intrinsic names
Summary: Speeds up compilation of SemaDeclAttr.cpp by nine seconds:
 0m49.555s - > 0m40.249s
Reviewers: simon_tatham, dmgreen, ostannard, MarkMurrayARM
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D72984

[lldb] Add a setting to not install the main executable
Summary: Add setting target.auto-install-main-executable that controls
whether the main executable should be automatically installed when
connected to a remote platform even if it does not have an explicit
install path specified. The default is true as the current behaviour.
Reviewers: omjavaid, JDevlieghere, srhines, labath, clayborg
Reviewed By: clayborg
Subscribers: kevin.brodsky, lldb-commits, llvm-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D71761

[mlir][ods] Fix StringRef initialization in builders
For the generated builder taking in unwrapped attribute values, if the
argument is a string, we should avoid wrapping it in quotes; otherwise
we are always setting the string attribute to contain the string
argument's name. The quotes come from StrinAttr's
`constBuilderCall`, which is reasonable for string literals, but not
function arguments containing strings.
Differential Revision: https://reviews.llvm.org/D72977

[WebAssembly][InstrEmitter] Foundation for multivalue call lowering
Summary: WebAssembly is unique among upstream targets in that it does
not at any point use physical registers to store values. Instead, it
uses virtual registers to model positions in its value stack. This means 
that some target-independent lowering activities that would use physical
registers need to use virtual registers instead for WebAssembly and
similar downstream targets. This CL generalizes the existing
`usesPhysRegsForPEI` lowering hook to
`usesPhysRegsForValues` in preparation for using it in more places.
One such place is in InstrEmitter for instructions that have variadic 
defs. On register machines, it only makes sense for these defs to be 
physical registers, but for WebAssembly they must be virtual registers 
like any other values. This CL changes InstrEmitter to check the new 
target lowering hook to determine whether variadic defs should be 
physical or virtual registers.
These changes are necessary to support a generalized CALL instruction 
for WebAssembly that is capable of returning an arbitrary number of 
arguments. Fully implementing that instruction will require additional 
changes that are described in comments here but left for a follow up 
commit.
Reviewers: aheejin, dschuff, qcolombet
Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71484

[scudo][standalone] Allow sched_getaffinity to fail
Summary: In some configuration, `sched_getaffinity` can fail. Some
reasons for that being the lack of `CAP_SYS_NICE` capability or some
syscall filtering and so on.
This should not be fatal to the allocator, so in this situation, we will
fallback to the `MaxTSDCount` value specified in the allocator 
configuration.
Reviewers: cferris, eugenis, hctim, morehouse, pcc
Subscribers: #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D73055

[Hexagon] Add REQUIRES: asserts to a testcase using -debug-only

Revert "[lldb] Add a setting to not install the main executable"
The commit has been reverted as it does not mention the author of the 
patch.
This reverts commit 7c9bcba644c4fc2178e20060d9ba2ff1f50ae15e.

[lldb] Add a setting to not install the main executable
Summary: Add setting target.auto-install-main-executable that controls
whether the main executable should be automatically installed when
connected to a remote platform even if it does not have an explicit
install path specified. The default is true as the current behaviour.
Reviewers: omjavaid, JDevlieghere, srhines, labath, clayborg
Reviewed By: clayborg
Subscribers: kevin.brodsky, lldb-commits, llvm-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D71761

[WebAssembly] Split and recombine multivalue calls for ISel
Summary: Multivalue calls both take and return an arbitrary number of 
arguments, but ISel only supports one or the other in a single 
instruction. To get around this, calls are modeled as two pseudo 
instructions during ISel. These pseudo instructions, CALL_PARAMS and 
CALL_RESULTS, are recombined into a single CALL MachineInstr in a custom
emit hook.
RegStackification and the MC layer will additionally need to be made 
aware of multivalue calls before the tests will produce correct output.
Reviewers: aheejin, dschuff
Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71496

[GISelKnownBits] Make the max depth a parameter of the analysis
Allow users of that analysis to define the cut off depth of the analysis
instead of hardcoding 6.
NFC as the default parameter is 6.

Fix tests of constant folding of fp operations on NaN values
Fix failures introduced due to change rG0b336b6048ae.

[mlir] Fix LLVM intrinsic convesion generator for overloadable types.
Summary: If an intrinsic has overloadable types like llvm_anyint_ty or 
llvm_anyfloat_ty then to getDeclaration() we need to pass a list of the
types that are "undefined" essentially concretizing them.
This patch add support for deriving such types from the MLIR op that has
been matched.
Reviewers: andydavis1, ftynse, nicolasvasilache, antiagainst
Subscribers: mehdi_amini, rriddle, jpienaar, burmako, shauheen,
arpith-jacob, mgester, lucyrfox, liufengdb, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72974

[lld][Hexagon] Add General Dynamic relocations (GD)
Differential revision: https://reviews.llvm.org/D72522

[Sema] Avoid Wrange-loop-analysis false positives
When Wrange-loop-analysis issues a diagnostic on a dependent type in a 
template the diagnostic may not be valid for all instantiations.
Therefore the diagnostic is suppressed during the instantiation. Non
dependent types still issue a diagnostic.
The same can happen when using macros. Therefore the diagnostic is 
disabled for macros.
Fixes https://bugs.llvm.org/show_bug.cgi?id=44556
Differential Revision: https://reviews.llvm.org/D73007

[clang-tidy] Fix check for Abseil internal namespace access
This change makes following modifications:
 * If reference originated from macro expansion, we report location
inside of
   the macro instead of location where macro is referenced.
 * If for any reason deduced location is not correct we silently ignore
it.
Patch by Gennadiy Rozental (rogeeff@google.com) Reviewed as
https://reviews.llvm.org/D72484

[APFloat][unittest] Fix -Wsign-compare after D69773

[lldb/Platform] Re-add ifdef's to guard macOS-only code.
I moved the code from the system initializer to PlatformMacOSX. The 
defines are still necessary because MacOSX is initialized on other 
platforms where the other platforms are not available.

Allow arbitrary capability name in Thread Safety Analysis
Restricting the names of capabilities to only "role" or "mutex" makes 
for awkward diagnostic text, such as with: 
https://chromium-review.googlesource.com/c/chromium/src/+/1948098/19/base/sequence_checker_unittest.nc#33

Removing an accidentally duplicated line of test code to fix bots.

Revert "[Clang] Un-break scan-build after integrated-cc1 change"
This reverts commit a6883017ea9af529e89d7f89af2477378b6eafca.

Revert "List implicit operator== after implicit destructors in a
vtable."
This reverts commit add2b7e44ada46f30715b5c48823a9e9e317e0c3.
Failed "Clang::virtual-compare.cpp" test on the arm builders. See 
http://lab.llvm.org:8011/builders/llvm-clang-win-x-armv7l/builds/3169 
for details.

[lldb/CMake] Add check-lldb-shell and check-lldb-api targets for Xcode
The Xcode generator does not provide the auto-generated targets where 
you can append a folder name to check-lldb. Instead add two custom lit 
targets to run just the shell and api tests.

AMDGPU/GlobalISel: Legalize G_PTR_ADD for arbitrary pointers
Pointers of unrecognized address spaces shoudl be treated as global-like
pointers. Even if loads and stores of them aren't handled, dumb
operations that just operate on the bits should work.

[lldb/DataFormatters] Fix the `$$deference$$` synthetic child
Summary: The ValueObject code checks for a special `$$dereference$$`
synthetic child to allow formatter providers to implement a natural 
dereferencing behavior in `frame variable` for objects like smart 
pointers.
This support was broken when used directly throught the Python API and 
not trhough `frame variable`. The reason is that SBFrame.FindVariable()
will return by default the synthetic variable if it exists, while `frame
variable` will not do this eagerly. The code in
`ValueObject::Dereference()` accounted for the latter but not for the
former. The fix is trivial. The test change includes additional
covergage for the already-working bahevior as it wasn't covered by the
testsuite before.
This commit also adds a short piece of documentatione explaining that it
is possible (even advisable) to provide this synthetic child outstide of
the range of the normal children.
Reviewers: jingham
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D73053

[lldb] Only run the shell test for the Xcode standalone build