[clangd] Add ArcsinX as a maintainer (#187886)
To address clangd maintance problem, I'm nominating myself as a clangd
maintainer.
I'm currently actively reviewing PRs. I also participated in
clangd-related discourse discussions, subscribed to clangd issues and
PRs. For a while I plan to spend some time for PRs review in clangd.
[Hexagon] Optimize load/store instruction during widening (#186962)
This change enhances the Hexagon Load-Store Widening pass to recognize
and optimize a specific pattern involving the S2_addasl_rrri
instruction. When widening loads/stores, the pass now detects cases
where the base register is defined by an S2_addasl_rrri instruction and
combines the operations into a single load double/store double
instruction with register shift op, eliminating the intermediate address
calculation.
Eg, for load,
If the definition of the base register came from a addasl instruction,
we generate a
memd(Rs + Rt << #imm) instead of memd(Rs + #imm) instruction.
Transform:
%18 = S2_addasl_rrri %8, %17, 3
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[clang][Tooling] Preserve -std flag when transferring compile commands across same-family language (#184560)
Previously, transfering a compile command from e.g. an ObjC++ source
(`.mm) to a C++ header (`.hh`) would drop `-std=c++20` because they
were different languages.
Fixes https://github.com/clangd/clangd/issues/1014
Fixes https://github.com/clangd/clangd/issues/2613
Signed-off-by: Dominique Fuchs <df at 0x9d.net>
[MLIR][Python][Docs] Fix example of Python-defined dialects
Some breaking changes are introduced in #186574 for Python-defined dialects. So we need to fix the example in the docs.
[clang] Extend -Wunused-but-set-variable to static globals (#178342)
This PR extends the capability of -Wunused-but-set-variable to track and
diagnose static global variables that are assigned values within a
function but whose values are never used. This change complements
-Wunused-variable, which detects static globals that are neither set nor
used.
I created this change with the help of claude for some initial guidance.
Fixes #148361
pf tests: verify that we handle address range rules correctly
There's been a problem where rules which differed only in address ranges
were considered duplicates and not added. Test for this.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
[WebAssembly][FastISel] Fold i64 extension chains into widened loads (#187934)
FastISel can already fold some sign- and zero-extending loads, but a
number of i64 extension patterns still leave redundant instructions
behind.
This patch series extends load folding to recognize several such cases,
including:
- promoted sign-extension chains
- copy + i64.extend_i32_{u,s} chains
- AND-based zero-extension chains
- shift-based sign-extension chains
When these patterns originate from narrow integer loads, fold them
directly into widened i64 loads instead of materializing intermediate
i32 loads followed by redundant i64 extends.
Fixes #179672
