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[libc] add shared adddf3 builtin (#205672)

Re-exposes LLVM-libc's `__adddf3` as `shared::adddf3` for reuse by
compiler-rt's builtins.

Stacked change - merge these first:
- #200094
- #205669
- #205670
- #205671

Part of #197824

knot-resolver: Tests with dedicated user, work in progress

x11/wayst: Update g20250601 => g20260608

Commit log:
- Fix at least 2 buffer overflows.
https://github.com/91861/wayst/compare/f5a6c22...51a1c97

- Add a .desktop file ripped from the build files of the port.
- Add an example configuration file.
- Move the BROKEN entry below the LICENSE entry in accordance with
  `portfmt`.

PR:             296298
Sponsored by:   UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd at FreeBSD.org>
MFH:            2026Q2

(cherry picked from commit f7edd01eceb19e14ac993e766884969d4011bc90)

Merge users/rnk/cir-doc-pygments into markdown-docs

x11/wayst: Update g20250601 => g20260608

Commit log:
- Fix at least 2 buffer overflows.
https://github.com/91861/wayst/compare/f5a6c22...51a1c97

- Add a .desktop file ripped from the build files of the port.
- Add an example configuration file.
- Move the BROKEN entry below the LICENSE entry in accordance with
  `portfmt`.

PR:             296298
Sponsored by:   UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd at FreeBSD.org>
MFH:            2026Q2

[clang][docs] Register MLIR lexer for CIR docs

Register the in-tree MLIR Pygments lexer with Clang Sphinx docs so generated CIR dialect documentation can highlight fenced mlir blocks.

Also teach the MLIR lexer to consume top-level whitespace. Without this, Sphinx reports a lexer warning after the lexer is registered, and docs-clang-html fails because Sphinx warnings are treated as errors.

This makes docs-clang-html build with CLANG_ENABLE_CIR=ON.

Merge users/rnk/clang-md-1b into markdown-docs

ddt_log: Fix refcount tagging for begin/commit

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Rob Norris <rob.norris at truenas.com>
Reviewed-by: Alexander Motin <alexander.motin at TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Signed-off-by: Igor Ostapenko <igor.ostapenko at klarasystems.com>
Closes #18706

[docs] Fix clang MyST rendering issues

Rebase, address comments

Created using spr 1.3.7

[CIR][AArch64] Upstream narrowing-addition NEON builtins (#204989)

Related to https://github.com/llvm/llvm-project/issues/185382

CIR lowering for
- narrowing-addition intrinsics
(https://arm-software.github.io/acle/neon_intrinsics/advsimd.html#narrowing-addition)

Port tests:
- `clang/test/CodeGen/AArch64/neon_intrinsics.c` to
`clang/test/CodeGen/AArch64/neon/add.c`

18188 loader: update .gitignore for userboot
Reviewed by: Andy Fiddaman <illumos at fiddaman.net>
Reviewed by: Dan McDonald <danmcd at edgecast.io>
Reviewed by: Bill Sommerfeld <sommerfeld at hamachi.org>
Approved by: Gordon Ross <gordon.w.ross at gmail.com>

[𝘀𝗽𝗿] changes to main this commit is based on

Created using spr 1.3.7

[skip ci]

[𝘀𝗽𝗿] initial version

Created using spr 1.3.7

[𝘀𝗽𝗿] initial version

Created using spr 1.3.7

[𝘀𝗽𝗿] changes to main this commit is based on

Created using spr 1.3.7

[skip ci]

[docs] Fix sanitizer MyST links

[driver][AIX] Accept '32_64' and 'any' as valid value for OBJECT_MODE (#205180)

If OBJECT_MODE is set to '32_64' or 'any', the driver accepts the
setting silently.

   Move devel/kf5/oxygen-icons to x11/oxygen-icons

VOP_VPUT_PAIR(): handle the case when dvp == vp

Reviewed by:    jah, markj
Sponsored by:   The FreeBSD Foundation
MFC after:      1 week
Differential revision:  https://reviews.freebsd.org/D57824

[VPlan] Remove unused VPHeaderPHIRecipe::getBackedgeRecipe (NFC) (#206184)

The virtual and its VPWidenInductionRecipe override have no callers.

[LV] Add range of tests accessing pointers with bounded IVs (NFC). (#205912)

Add a range of tests covering loads/stores with pointers with
bounded/clamped IV accesses, like A[i%2].

[RISCV] Support floating point registers with -fzero-call-used-regs (#204929)

This patch adds support for clearing floating-point registers with the
`zero-call-used-regs` attribute. It supports all combinations of
floating-point sizes (fp16, fp32, fp64, fp128) and extensions (F, D, Q).

Like #194883, this uses pseudo-instructions to clear the registers. Note
that `PseudoClearFPR64` is manually expanded in `riscv-expand-pseudo`.
For RV32, we expand it to `fcvt.d.w reg, x0, rtz`, but for RV64 we use
the more efficient `fmv.d.x reg, x0`. This also matches GCC behavior.

Finally, using non-GPR values for `zero-call-used-regs` in the Clang
driver is still rejected as the backend doesn't support clearing vector
registers.

hwpstate_intel(4): Fix comment for 'req', whitespace

MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Seat 36K in AC667, over Thetford Mines
Sponsored by:   The FreeBSD Foundation

files: riscv, arm64: Remove redundant 'ofw_cpu.c'

Should have been removed when that line was moved from 'files.arm' to
'files'.

Fixes:          14e1a2cd295d ("Move ofw_cpu file to the main files conf file.")
MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Seat 36K in AC667, over Maine near Canadian border
Sponsored by:   The FreeBSD Foundation

hwpstate_amd(4): Style: End brace of struct initializers on new line

Fixes:          191f47bcd650 ("hwpstate_amd: Refactor the cpufreq code by using delegation pattenr")
MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Dalhousie CS Faculty building
Sponsored by:   The FreeBSD Foundation

hwpstate_intel(4): Debug sysctl: Style

Introduce 'error', set it to the result of rdmsr_safe() and use 'error'
as the test expression.

No functional change (intended).

Fixes:          29b8220b179b ("hwpstate_intel: Use ipi instead of thread_lock + sched_bind")
MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Dalhousie CS Faculty building
Sponsored by:   The FreeBSD Foundation

hwpstate_intel(4): Debug sysctl: Fix retrieving the pkg-level MSR

IA32_HWP_REQUEST_PACKAGE_CONTROL is never set in 'sc->req'.  Just
discriminate on 'hwp_pkg_ctrl', which indicates the hardware capability
as indicated by CPUID.

Fixes:          29b8220b179b ("hwpstate_intel: Use ipi instead of thread_lock + sched_bind")
MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Dalhousie CS Faculty building
Sponsored by:   The FreeBSD Foundation

hwpstate_intel(4): Debug sysctl: Rename struct/field

New names are better descriptions and match what is done in
hwpstate_amd(4).

No functional change (intended).

MFC after:      2 weeks
Event:          Halifax Hackathon 202606
Location:       Dalhousie CS Faculty building
Sponsored by:   The FreeBSD Foundation

   chromium: fix build on NetBSD-10

   Reported by Sean Cole