[AArch64][Neoverse] Updating integer divisions latency/throughput (#224592)
Measured average latencies/throughput on spec intrate train data set and the result is:
Form Divides Mean Median p90 p99 Max At minimum
W-form 955,659,771 6.12 6 7 11 12 39.5%
X-form 177,481,992 5.38 5 7 8 20 83.4%
Benchmark W mean X mean Share of all divides
541.leela_r 5.90 7.81 60.1%
531.deepsjeng_r 6.09 9.42 16.8%
505.mcf_r 5.93 5.31 11.7%
502.gcc_r 7.83 5.25 7.8%
523.xalancbmk_r 9.43 5.39 3.3%
500.perlbench_r 5.26 5.37 0.2%
520.omnetpp_r 9.67 5.68 0.1%
Choose p90 as compromise regarding worst-case previous setting.
fixup! Make predicate more condensed
Remove the sve_perm256 predicate and replace the only other predicate
using it with a more condensed one and make it capture the entire
condition.
[mlir][SPIR-V] Derive Aligned memory operand for PhysicalStorageBuffer in vector.load/store (#214200)
Mirror calculateMemoryRequirements from MemRefToSPIRV.cpp, since
PhysicalStorageBuffer pointers carry no implicit alignment guarantee
[AArch64] Support FP atomic stores with memory hints
This patch extends the atomic-store-hint pseudos to accept preserved
floating-point atomic stores. It adds an FPR16 pseudo family and direct
half, bfloat, float, and double patterns for the supported addressing
modes.
The pseudos expand relaxed stores to STR and RCPC3 release and
sequentially consistent stores to STLUR, retaining memory hints without
cross-register-bank copies.
[AArch64] Support direct RCPC3 FP atomic loads and stores
Preserve half, bfloat, float, and double atomic loads and stores
through AtomicExpand for acquire and release orderings, and preserve
sequentially consistent stores, when RCPC3 and NEON are available.
Add SelectionDAG patterns for the RCPC3 LDAPUR and STLUR operations,
including unscaled offsets, and update the existing FP lane patterns to
match the preserved floating-point atomic nodes. Targets without the
required features continue to use integer lowering.
[clang][bytecode] Reject invalid opaque pointer base conversions (#231366)
We can't reject them as they happen because that needs to work for other
tests. So reject them when computing the layout offset.
[lldb][test] Fix cleanup in test_save_linux_minidump_one_region (#231809)
On Windows you cannot unlink a file that is open
in something else. So we must delete lldb's target before trying to
unlink the minidump file.
Another follow up to #231448. Same thing I did to the other tests but I
missed this one.
[LoopFusion] Initial Cost Model (#224626)
Adds an initial memory-reuse profitability filter to LoopFusion as part of the effort towards #189117. The full design, evaluation, and proposed follow-up heuristics are discussed in the [RFC](https://discourse.llvm.org/t/loopfusion-initiating-a-cost-model-for-loopfusion/91859).
Fusion requires at least one cross-loop reuse at corresponding iterations, identified through either:
* a same-iteration RAW flow dependence from DependenceAnalysis
* an exact affine RAR match using the load type and SCEV start and step.
Multiple consumers of the same producer count as one reuse. The
threshold is configurable with -loop-fusion-min-reused-values; setting it to zero restores the previous unrestricted behaviour
This is intentionally a low-cost first filter rather than a complete cost model. Future work may consider vectorization compatibility, register pressure, and the strength of locality benefits.
Creation of this patch was partly assisted by AI tools.
biology/vcflib: Update to 1.0.15
This updates the Zig dependency to lang/zig015 and fixes the libzig.a
build from the undefined __zig_probe_stack bug. Also apply Makefile
cleanup and formatting.
Approved by: arrowd (co-mentor)
Approved by: makc (mentor)
(cherry picked from commit 3d63dea5e43d012cae4b303ed2498e3c2f2bec0e)
biology/vcflib: Update to 1.0.15
This updates the Zig dependency to lang/zig015 and fixes the libzig.a
build from the undefined __zig_probe_stack bug. Also apply Makefile
cleanup and formatting.
Approved by: arrowd (co-mentor)
Approved by: makc (mentor)
Assign the default video model directly
## Context
`do_create` built a copy of the payload just to fill in the default `video_model`. The API model is mutable and the payload belongs to this call, so assigning the field is enough.
[lldb][test] Narrow TestStepNoDebug.py XFAIL to dwarf and dwo (#231818)
Follow up to #230116.
These tests were xfailed due to
https://github.com/llvm/llvm-project/issues/56292, which still applies.
They pass with PDB.
Also remove the debug info types from the docstrings, they must be from
a time before we automatically ran tests with different debug info
formats.
NAS-144456 / 28.0.0-BETA.1 / Fix audit tests pagination (#20010)
`api2.test_staticroutes.test_staticroute` and `api2.test_webshell_audit`
always fail. The reason is that they execute later in testing sequence,
and, at that point, we have more than `DEFLIMIT = 10000` audit records,
and newer records are never fetched.
[MLIR][Remark] Report why the LLVM remark streamer could not be created
LLVMRemarkStreamer::createToFile dropped the reason it failed: a file that
could not be opened and a serializer that could not be created both turned
into a bare failure, and enableOptimizationRemarksWithLLVMStreamer failed
without a diagnostic.
- createToFile returns llvm::Expected. It opens the file with
mlir::openOutputFile and returns its message; a serializer error is
returned as a FileError naming the file.
- enableOptimizationRemarksWithLLVMStreamer emits the error on the context.
Assisted-by: Claude Code (Claude Opus 5.5)
