[Hexagon] Fix HexagonRDFOpt hang during live-in recomputation (#209986)
After HexagonRDFOpt, the compiler recomputed live-in registers for every
block in one batch. On large inputs (e.g. kernel builds) this was slow,
and on some functions each pass changed the live-in values of other
blocks, triggering more passes until the compiler hung (PR #207422).
Fix: process blocks one at a time in post-order (successors before
predecessors) and stop as soon as nothing changes. Add a pass limit as a
safety net to keep compile time bounded in all cases.
(cherry picked from commit da6f3e6cc2565e4c6cf720931845c8eee132ce86)
[libc][NFC] Port raw syscall users to existing syscall_wrappers (#208039)
Several call sites still invoked syscall_impl directly (or carried
their own SYS_* fallback ladders) for syscalls that already have a
wrapper in src/__support/OSUtil/linux/syscall_wrappers.
This PR removes these syscalls in favor of the syscall_wrappers.
[libc++] Update release runners to the image that was used on main at the branch point (#210378)
This will allow retaining a stable image for CI throughout the whole
LLVM 23 release.
Add missing BigArchive container plugin to lldb's bazel build (#210304)
Another missing plugin and its libraries in the LLDB bazel build. Based
this one on source/Plugins/ObjectContainer/Big-Archive/CMakeLists.txt
and its dependecies ( {}.cpp & {}.h)
waiting on CI to confirm bazel is correct as cannot build locally.
Can confirm this library will convert to BUCK internally at Meta and
build with buck2 where we do have in the default plugin list.
bazel rule assisted with: claude
[compiler-rt] Fix tests after #205331 (#210370)
New optimizations changed some compiler-rt tests. Update the test
expectations based on this.
Fixes #210355.
[flang] Added fir.create_box operation. (#210220)
This patch adds `fir.create_box` operation that allows
creating `!fir.box<>` values with arbitrary byte strides.
It can be used to recreate boxes describing non-contiguous
arrays from descriptor components (base_addr/lbs/extents/strides)
across offload regions.
This is just initial definition and code generation code.
The folders and passes producing this operation will be added
later.
[NFC][VPlan] Add initial tests for future VPlan-based stride MV
I tried to include both the features that current
LoopAccessAnalysis-based transformation supports (e.g., trunc/sext of
stride) but also cases where the current implementation behaves poorly,
e.g., https://godbolt.org/z/h31c3zKxK; as well as some other potentially
interesting scenarios I could imagine.
The are two test files with the same content. One is for VPlan dump change of
the future transformation alone (I'll update `-vplan-print-after` in the next
PR), another is for the full vectorizer pipeline. The latter have two `RUN:`
lines:
* No multiversioning, so the next PR diff can show the transformation itself
* Stride multiversionin performed in LAA, so that we can compare future
VPlan-based transformation vs old behavior.
[SystemZ/[z/OS] Guard source-epoch related testcase to 64-bit clang targets (#210341)
This patch guards the following testcase for 64-bit clang targets Clang :: CodeGen/SystemZ/systemz-module.flags.c
[clang][NFC] Bump the maximum number of Frontend diagnostics
The number of Frontend diagnostics in DiagnosticFrontendKinds.td is close
to the DIAG_SIZE_FRONTEND limit of 200 (195 in use). Increase the limit
to 300.
Replace Python's deprecated tempfile.mktemp() with secure temp APIs (#210123)
Python's tempfile.mktemp() is deprecated and insecure: it returns a path
without creating the file, leaving a TOCTOU/symlink window before the
file is opened. Replace every use, choosing the temp API by lifetime:
- compiler-rt android_common.py adb(): tempfile.TemporaryFile
(anonymous, auto-deleted), read back via seek(0); drops manual
close()/unlink().
- compiler-rt android_common.py pull_from_device():
tempfile.TemporaryDirectory so "adb pull" writes into a private,
auto-cleaned directory.
- lldb examples delta.py / gdbremote.py start_gdb_log():
tempfile.NamedTemporaryFile(delete=False); the log must outlive the call
for a later stop_gdb_log, so it is intentionally not auto-deleted.
Reported by internal static analysis and contributed upstream for the
benefit of the wider community.
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[mlir][vector] Extend `combineContractAndBroadcast` to accept `vector.shape_cast` (#208752)
`combineContractAndBroadcast` is a pattern that matches
`vector.contract` operations whose inputs are defined by
`vector.broadcast`, e.g.:
```mlir
%0 = vector.broadcast %lhs : vector<8x4xi32> to vector<1x8x4xi32>
%1 = vector.broadcast %rhs : vector<8x4xi32> to vector<1x8x4xi32>
%result = vector.contract {
indexing_maps = [#map0, #map1, #map2],
iterator_types = ["reduction", "parallel", "parallel", "reduction"],
kind = #vector.kind<add>
} %0, %1, %acc : vector<1x8x4xi32>, vector<1x8x4xi32> into vector<8x8xi32>
```
The pattern folds away the reduction over a unit dimension introduced by
the defining operations, producing a simplified `vector.contract`:
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[ExtractAPI] Include nullability attributes (#209221)
Nullability attributes (nullable, nonnull, null_unspecified,
null_resettable) add valuable context about the type, and would be
useful when viewing declarations. This patch updates ExtractAPI to
include these attributes in the symbol graph.
rdar://139097216
[ExtractAPI] Include availability attributes for anonymous typedefs (#209187)
When an anonymous type is defined and has availability attributes, the
attributes are attached to the typedef rather than the type being
defined. This patch updates the anonymous type handling logic to merge
the availability from the typedef in order to correctly include it in
the symbol graph.
rdar://125497949
[lldb][Windows] Reuse preloaded exe module on launch (#210010)
# Brief
Recreating the module everytime causes the path to be canonicalized.
This does not work well with subst drives, because the newly created
module will not have the correct drive path, causing breakpoints to be
unresolved.
# Description
`ProcessWindows::OnDebuggerConnected` derives the executable module from
`GetModuleFileNameExW` on every connect. This returns the process
image's *real* path, so when the target is created via a subst'd or
mapped drive (e.g. `S:\...\a.out`, where `S:` is subst for `C:\S`) it
comes back as `C:\S\...\a.out`. `GetOrCreateModule` then fails to match
the module LLDB had already preloaded and creates a duplicate instead.
The duplicate leaves the original module's breakpoint location orphaned
unresolved while the new module's location is resolved, so a source line
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[LLD] [COFF] Fix linking directly against an ARM64X DLL without import library (#210311)
In mingw mode, when linking against a DLL, the user can either provide a
regular import library, or provide the actual DLL. When linking against
an ARM64X image, add both native and EC views to the symbol table on EC
targets. Also getMachine() on such images returns ARM64X, treat it as
ARM64 instead.
[RISCV][GlobalISel] Legalize G_ATOMICRMW_XCHG (#209983)
This commit makes `xchg` consistent with `add/and/or/xor` across all
type/extension combinations. Updates `legalizer-info-validation.mir` for
the newly defined rules and adds `atomicrmw-xchg.ll` and
`legalize-atomicrmw-xchg-rv{32,64}.mir` tests.
