[libc] Add hdrgen --proxy mode (#174823)
This adds the --proxy switch to generate headers like go
into libc/src/hdr/foo-proxy.h instead of public headers.
[AMDGPU] Reimplement VOP3 CMPX encoding fixup using PostEncoderMethod. NFCI. (#174799)
These instructions have a field that we want to encode as the non-zero
value EXEC_LO, but have the decoder accept any value. Reimplement this
using PostEncoderMethod instead of custom code in
AMDGPUMCCodeEmitter::encodeInstruction, so that it is controlled by the
tablegen instruction definitions themselves.
py-xmlschema: updated to 4.3.0
v4.3.0 (2026-01-03)
* Add arguments validation for schemas and validation methods (by validation contexts)
* Add custom XPath parser for find/findall/iterfind APIs on schemas for match
singleton sequence also if position is a number greater than 1 in predicate
expression
* Improve build of XSD elements and groups, using a three-state built flag for
components
* Extend and fix memory tests (Python 3.14+ seems to consume more memory)
* Drop support for Python 3.9 and add development support for Python 3.15
py-urllib3: updated to 2.6.3
2.6.3 (2026-01-07)
- Fixed a high-severity security issue where decompression-bomb safeguards of
the streaming API were bypassed when HTTP redirects were followed.
- Started treating ``Retry-After`` times greater than 6 hours as 6 hours by
default.
- Fixed ``urllib3.connection.VerifiedHTTPSConnection`` on Emscripten.
InstCombine: Consider not-inf/nan context when simplifying fmul
Consider if the result can be nan, or if the inputs cannot
be infinity from the flag when trying to simplify fmul into
copysign.
