[AMDGPU] Emit s_barrier_signal for s.barrier.signal.var when able (#191028)
When the member count is 0 (which causes the barrier's member count to
be re-used from a previous barrier initialization or
s.barrier.signal.var) and the barrier is constant, we can represent
named barrier signaling with the m0-less form. Enable this behavior.
Assisted by Opus 4.6 which drafted the initial implementation.
[mlir][XeGPUToXeVM][XeVMToLLVM] Update the default cache-control values. (#190954)
In XeGPU, user can provide cache control value for only certain levels,
they do not have to provide cache-control value for all levels. However,
XeVM requires that each cache level must have a cache-control value. To
solve this issue, XeGPUToXeVM conversion pass adds default value to
cache-levels that does not have a user-provided cache-control value.
This PR updates this process in the following way:
- If no cache-control hint is provided for any levels, use system
default (USE_DEFAULT).
- If any of the levels has at least one cache-control value, use certain
default value for other levels.
If system default (USE_DEFAULT) is used, no cache-control metadata
annotation is necessary.
[libc] Remove yet another batch of header template files (#191067)
This follows up on ae63230c23151c16ba68d5213da8bd5459c03a40 and remove
header templates from more C/POSIX standard headers, where templates
only used to `#include` files with macro definitions. We add this logic
to YAML instead - add entries to the `macros` list that point to the
correct `macro_header` to ensure it would be included.
[libc][MacOS] Enable wchar conversion and rpc_server (#191065)
Originally the wchar conversion was disabled due to MacOS not providing
uchar.h. We only needed it for char32_t so this PR just provides it
directly from our headers on MacOS. This also fixes fwrite_unlocked not
being available on MacOS which is needed for rpc_server.h.
[SPIR-V] Drop initializer for Import linkage type globals (#190942)
Per SPIR-V spec, variable with Import linkage must not have initializer
Fix corresponding spirv-val error:
```
error: A module-scope OpVariable with initialization value cannot be marked with the Import Linkage Type.
```
related to https://github.com/llvm/llvm-project/issues/190736
[libc++] Use Fuchsia futex operations (#133571)
The basic futex operations have always been available on Fuchsia.
Wire them up to properly support C++20 atomic notify_*/wait.
[UpdateTestChecks] Add --filter/--filter-out support to update_mir_test_checks.py
These options were already accepted by the script but silently ignored.
This patch makes them functional, consistent with update_llc_test_checks.py.
Co-Authored-By: Claude Sonnet 4.6 <noreply at anthropic.com>
[CIR][NFC] Simplify LexicalScope::cleanup() (#191034)
The LexicalScope::cleanup() function contained a lot of logic that had
been copied from the classic codegen version of this function to
properly handle branching through cleanup blocks. Since CIR cleanups are
no longer based on blocks and branches, this had become dead code. This
change simplifies the function accordiningly. This also removes the
LexicalScope::getCleanupBlock() function which is no longer called, and
the LexicalScope::createCleanupBlock() and
LexicalScope::getOrCreateCleanupBlock() functions which weren't called
even before this change.
Assisted-by: Cursor / claude-4.6-opus-high
