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InstCombine: Improve single-use fneg(fabs(x)) SimplifyDemandedFPClass handling

Match the multi-use case's logic for understanding no-nan/no-inf context
and nsz.

InstCombine: Improve single use fabs SimplifyDemandedFPClass handling

SimplifyDemandedFPClass's handling of fabs recently became smarter in
the multiple use case than single. Unify these so the single use case
is equally as smart. This includes propagating ninf / nnan context into
the instruction, and accounting for nsz if the only bit difference is
for zero.

InstCombine: Consider nsz when simplifying fabs/fneg uses

Later this trick should also be applied in the single use
case.

X86: Avoid some uses of getLibcallName

Query the LibcallImpl, check if it's supported, and generate
the symbol through the enum.

[DA] Apply monotonicity check for Strong SIV

InstCombine: Handle multiple use fneg(fabs(x)) in SimplifyDemandedFPClass (#176149)

This ends up being smarter than the single use case, so these should
be merged at some point.

[DA] Move some monotonicity declarations to header file (NFC)

[DA] Remove `-da-enable-monotonicity-check` flag

[DA] Handle monotonicity domain in monotonicity check

Sparc: Avoid passing around libfunc names for f128 operations

[DA] Introduce domain for monotonicity

Merge branch 'freebsd/15-stable/main' into hardened/15-stable/main

textproc/py-agate: update to 1.14.1

Changes:        https://github.com/wireservice/agate/blob/1.14.1/CHANGELOG.rst
Reported by:    portscout, repology

XCore: Use memcpy_align_4 through LibcallImpl

[AMDGPU] Update documentation for wave reduction intrinsics

[AMDGPU] Add builtins for wave reduction intrinsics

Use `e32` encoding as placeholder

TargetLowering: Avoid getLibcallName in getSafeStackPointerLocation

Use pseudo opcode for switch statements

Use enum values for src modifiers.

[AMDGPU] Add wave reduce intrinsics for double types - 2

Supported Ops: `add`, `sub`

StackProtector: Use LibcallLoweringInfo analysis

Fix reordering conversionLibcall

graphics/ufraw: Revert port deprecation

This reverts commit 6b9a9713cd09b9ca648ed75f33f08ed125b271d9.

Ufraw is still useful as a command-line utility and used by graphic/fotocx
pass maintenership to danfe

Approved by:    danfe (private e-mail)

[gn build] Port 9c2a3d602239

[Maintainers] Fix broken clang-tools-extra link (NFC) (#176345)

Was converted to .rst in #165171

Revert "[llvm-dwarfdump][LineCov 1/3] Add variable coverage metrics" (#176358)

Reverts llvm/llvm-project#169646

Many buildbot errors

[AMDGPU] Add builtins for wave reduction intrinsics

[AMDGPU] Update documentation for wave reduction intrinsics

bge: disable TXCSUM if UDP transmit checksum offloading is disabled

The bge interface is special with respect to transmit checksumi
offloading. In the default settings, an bge interface announces TXCSUM
capabilities, but only supports TCP/IPv4 and not UDP/IPv4 due to
limitations of some of the NICs. This results in problems when the bge
interface becomes a member of a bridge. Since currently only the
TXCSUM capabilities are synced when a member is added to a bridge and
not the protocol specific capabilities, this can result in a situation
where UDP packets are sent out using a bge interface without having a
correct checksum.
To mitigate this problem, initially don't announce TXCSUM capabilities,
when UDP transmit checksum is disabled. It is still possible to enable
TXCSUM capabilities via ifconfig.

PR:                     291420
Reviewed by:            Timo Voelker
MFC after:              3 days
Differential Revision:  https://reviews.freebsd.org/D54486