This patch fixes:

  mlir/lib/Dialect/Arithmetic/Transforms/ExpandOps.cpp:161:52: error:
  'static_assert' with no message is a C++17 extension
  [-Werror,-Wc++17-extensions]

Reviewed By: ftynse, nicolasvasilache, bondhugula

Differential Revision: https://reviews.llvm.org/D117072

Differential Revision: https://reviews.llvm.org/D117136

We could use knownbits on both operands for even more folds (and there are
already tests in place for that), but this is enough to recover the example
from:
https://github.com/llvm/llvm-project/issues/51934
(the tests are derived from the code in that example)

I am assuming no noticeable compile-time impact from this because udiv/urem
are rare opcodes.

Differential Revision: https://reviews.llvm.org/D116616

There have been a few API pieces remaining to allow for a smooth transition for
downstream users, but these have been up for a few months now. After this only
the C API will have reference to "Identifier", but those will be reworked in a followup.

The main updates are:
* Identifier -> StringAttr
* StringAttr::get requires the context as the first parameter
  - i.e. `Identifier::get("...", ctx)` -> `StringAttr::get(ctx, "...")`

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D116626

If any of the operands is NaN, return the operand instead of a new constant.

When the rhs operand is a constant, the second arith.cmpf+select ops will be folded away.

https://reviews.llvm.org/D117010 marks the two ops commutative, which will place the constant on the rhs.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D117011

db08df05 does not work because part.relrDyn is
a unique_ptr and `reset` destroys the object which may still be referenced.

This commit uses the D114180 approach. Also improve the test to check that there
is no R_X86_64_RELATIVE.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D117101

Differential Revision: https://reviews.llvm.org/D116785

This reverts commit 253ce928.
Breaks tests on Windows, see
https://github.com/llvm/llvm-project/issues/52921#issuecomment-1011118896

Agreed policy is that RISC-V extensions that have not yet been ratified
should be marked as experimental, and enabling them requires the use of
the -menable-experimental-extensions flag when using clang alongside the
version number. These extensions have now been ratified, so this is no
longer necessary, and the target feature names can be renamed to no
longer be prefixed with "experimental-".

Differential Revision: https://reviews.llvm.org/D117131

binutils ar does not support one-dash long options (they conflict with
operation code and modifier flags).

```
% ar -help
ar: invalid option -- 'e'
...
% ar -version
ar: invalid option -- 'e'
...

% ar x --plugin=xx x.a  # ok
% ar x -plugin=xx x.a
ar: two different operation options specified
% ar -plugin=/usr/lib/gcc/x86_64-linux-gnu/10/liblto_plugin.so x x.a
ar: x: No such file or directory
```

Drop one-dash long options to simplify code and match the usual practice for
command line utilities.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D116977

Stop using the _term variants of the mov to save the initial exec
value before the waterfall loop. This cannot be glued to the bottom of
the block because we may need to spill the result register. Just use a
regular mov, like the loops produced on the DAG path. Fixes some
verification errors with regalloc fast.

This was inserting the new G_CONSTANT after the use, and the later
block scan would run off the end. Fix calling SkipPHIsAndLabels for no
apparent reason.

Fix https://github.com/llvm/llvm-project/issues/53073

In case of a relocation error, GNU ld's link map includes
the archive member extraction information but not output sections.

Our -Map and --why-extract= are currently no-op in case of an error.
This change makes the two options work.

Reviewed By: ikudrin, peter.smith

Differential Revision: https://reviews.llvm.org/D116838

to prepare for D116838, otherwise for linkerscript/discard-section-err.s,
there will be a null pointer dereference in `part.relrDyn->getParent()->size`
in `finalizeSynthetic(part.relrDyn.get())`.

I'm attempting to debug an issue that I can only get to happen on
godbolt, where the cpu-dispatch resolver for an out of line member
function is generated with the wrong name, causing a link failure.

Fixes #52952.

Differential Revision: https://reviews.llvm.org/D116991

1773ddda adds the dependency to
ArithmeticDialect.

Reviewed By: rdzhabarov, ftynse

Differential Revision: https://reviews.llvm.org/D117127

Followup to D116964 where we only did this in the CGSCC inliner.
Fixes leaks reported in D116964.

This makes the mapping between iOS & tvOS/watchOS versions more accurate. For example, iOS 9.3 now gets correctly mapped into tvOS 9.2 and not tvOS 9.3.

Before this change, the incorrect mapping could cause excessive or missing warnings for code that specifies availability for iOS, but not for tvOS/watchOS.

rdar://81491680

Differential Revision: https://reviews.llvm.org/D116822

Use it to remove explicit string compares from unrolling preferences.

I'm of two minds on this. Ideally, we would define things in terms
of architectural or microarchitectural features, but it's hard to
do that with things like unrolling preferences without just ending up
with FeatureSiFive7UnrollingPreferences.

Having a proc enum is consistent with ARM and AArch64. X86 only has
a few and is trying to move away from it.

Reviewed By: asb, mcberg2021

Differential Revision: https://reviews.llvm.org/D117060

Summary:

modified the demangle for the xcoff label symbol.

Reviewers: James Henderson
Differential Revision: https://reviews.llvm.org/D113106

The aarch64 instrumentation is currently unsupported so the test is failing.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D117102

-Wdeclaration-after-statement currently only outputs an diagnostic if the user is compiling in C versions older than C99, even if the warning was explicitly requested by the user.
This patch makes the warning also available in later C versions. If the C version is C99 or later it is simply a normal warning that is disabled by default (as it is valid C99) and has to be enabled by users. In older versions it remains an extension warning, and therefore affected by -pedantic.

The above behaviour also matches GCCs behaviour.

Fixes https://bugs.llvm.org/show_bug.cgi?id=51931

Differential Revision: https://reviews.llvm.org/D114787

Enable constant folding of ops within the math dialect, and introduce constant folders for ceil and log2

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D117085

This should be the last remaining flaky watchpoint test on Windows

To avoid trivial changes.

This reverts commit 945aa520.

This commit broke the windows lldb bot.

Fma combine assumes that MRI.getVRegDef(Reg)->getOperand(0).getReg() = Reg
which is not true when Reg is defined by instruction with multiple defs
e.g. G_UNMERGE_VALUES.
Fix is to keep register and the instruction that defines register in
DefinitionAndSourceRegister and use when needed.

Differential Revision: https://reviews.llvm.org/D117032

Previously we limited ourselves to only internal/private functions. We
can also delete linkonce_odr functions.

Minor compile time wins:
https://llvm-compile-time-tracker.com/compare.php?from=d51e3474e060cb0e90dc2e2487f778b0d3e6a8de&to=bccffe3f8d5dd4dda884c9ac1f93e51772519cad&stat=instructions

Major memory wins on tramp3d:
https://llvm-compile-time-tracker.com/compare.php?from=d51e3474e060cb0e90dc2e2487f778b0d3e6a8de&to=bccffe3f8d5dd4dda884c9ac1f93e51772519cad&stat=max-rss

Reviewed By: nikic, mtrofin

Differential Revision: https://reviews.llvm.org/D115545

On Apple platforms, arc4random is faster than /dev/urandom, and it is
the recommended user-space RNG according to Apple's own OS folks.

This commit adds an ABI switch to guard ABI-break-protections in
std::random_device, and starts using arc4random instead of /dev/urandom
to implement std::random_device on Apple platforms.

Note that previously, `std::random_device` would allow passing a custom
token to its constructor, and that token would be interpreted as the name
of a file to read entropy from. This was implementation-defined and
undocumented. After this change, Apple platforms will be using arc4random()
instead, and any custom token passed to the constructor will be ignored.
This behavioral change will also impact other platforms that use the
arc4random() implementation, such as OpenBSD. This should be fine since
that is effectively a relaxation of the constructor's requirements.

rdar://86638350

Differential Revision: h...

Depends on D112160

This adds the new options `--call-graph-profile-sort` (default),
`--no-call-graph-profile-sort` and `--print-symbol-order=`. If call graph
profile sorting is enabled, reads `__LLVM,__cg_profile` sections from object
files and uses the resulting graph to put callees and callers close to each
other in the final binary via the C3 clustering heuristic.

Differential Revision: https://reviews.llvm.org/D112164