tdestroy: don't visit one-child node twice
Change tdestroy() to immediately free a node with no right child as
soon as it is encountered. Currently, such nodes are visited twice
before deletion.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D54699
NAS-139207 / 26.04 / Robustize iSCSI ALUA (by bmeagherix) (#18051)
- For HA systems, do not use systemd to start SCST.
- Improve DLM cleanup.
- Improve ALUA handling with locked or disabled extents.
- Add additional lun health checks to standby_after_start.
- Eliminate customization of recovery_tmo on HA sessions.
- Optimize removal of ALUA HA LUN in removed_target_extent.
- Update slightly for 26.04
[lldb] Fix llvm_unreachable for invalid Wasm address (#176464)
We had an llvm_unreachable following a switch on the WasmAddress's type.
However, the type is encoded in a larger 64 bit address, and therefore
it's possible to create an invalid value that doesn't map back on one of
the enum types.
We could try to diagnose that in the wrapper, or treat all invalid types
the same. I took the latter approach because it makes it easier to show
the invalid type after the fact in an error message.
rdar://168314695
[clang][Wunsafe-buffer-usage] Add -Wunsafe-buffer-usage-in-static-sized-array (#176466)
This PR adds support for toggling on/off warnings around static sized
arrays. This supports / addresses
https://github.com/llvm/llvm-project/issues/87284, for those who use
-fsanitize=array-bounds which inserts checks for fixed sized arrays
already.
Initialize CLOCK_UPTIME for itmer events
Since we move to implement Linux's CLOCK_MONOTONIC with CLOCK_UPTIME, we
broke the some timer support for Linux. Fix this by initializing
CLOCK_UPTIME as a posix clock so we can use in that context.
PR: 292496
MFC After: 5 days
Fixes: 108de784513d
Sponsored by: Netflix
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D54746
[lld][WebAssembly] Fix crash in debug info relocation against shared symbols (#176460)
When a weakly defined function is not include because its defined in
shared object we should use the tombstone value during relocation of
debug info.
Fixes: https://github.com/emscripten-core/emscripten/issues/26044
[VPlan] Add scalable check to SinkStoreInfo helper.
Bail out on scalable vectors in helper. Currently this is not causing
issues, but fixes a potential crash that would be exposed by a follow-up
change.
Test would exposes the issue in the future has been added in
8c5352cf3e14ec0c56f592091899d229de8436a7.
[HLSL][Matrix] Update indexed matrix elements individually (#176216)
Fixes #174629
This PR is similar to that of #169144 but for matrices.
When storing to a matrix element or matrix row, `insertelement`
instructions have been replaced by GEPs followed by stores to individual
matrix elements. There is no longer storing of the entire matrix to
memory all at once, thus avoiding data races when writing to independent
matrix elements from multiple threads.
Reland "[NFC][MI] Tidy Up RegState enum use (1/2)" (#176277)
This Change is to prepare to make RegState into an enum class. It:
- Updates documentation to match the order in the code.
- Brings the `get<>RegState` functions together and makes them
`constexpr`.
- Adopts the `get<>RegState` where RegStates were being chosen with
ternary operators in backend code.
- Introduces `hasRegState` to make querying RegState easier once it is
an enum class.
- Adopts `hasRegState` where equivalent was done with bitwise
arithmetic.
- Introduces `RegState::NoFlags`, which will be used for the lack of
flags.
- Documents that `0x1` is a reserved flag value used to detect if
someone is passing `true` instead of flags (due to implicit bool to
unsigned conversions).
- Updates two calls to `MachineInstrBuilder::addReg` which were passing
`false` to the flags operand, to no longer pass a value.
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[LifetimeSafety] Track moved declarations to prevent false positives (#170007)
Prevent false positives in lifetime safety analysis when variables are
moved using `std::move`.
When a value is moved using `std::move`, ownership is transferred from
the original variable to another. The lifetime safety analysis was
previously generating false positives by warning about
use-after-lifetime when the original variable was destroyed after being
moved. This change prevents those false positives by tracking moved
declarations and exempting them from loan expiration checks.
- Added tracking for declarations that have been moved via `std::move`
in the `FactsGenerator` class
- Added a `MovedDecls` set to track moved declarations in a
flow-insensitive manner
- Implemented detection of `std::move` calls in `VisitCallExpr`
- Modified `handleLifetimeEnds` to skip loans for declarations that have
been moved
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