[InstSimplify] Consider `dereferenceable(N)` when simplifying pointer equalities (#203867)
Extend `computePointerICmp` to leverage `dereferenceable(N)` attribute
when simplifying pointer equality comparisons. Per attribute semantics,
an argument pointer marked as such cannot be a one-past-the-end pointer
to some object, thus it cannot equal the start of an adjacent object.
This lets us prove inequality between a `dereferenceable` argument and
storage allocated within the function.
Fixes: https://github.com/llvm/llvm-project/issues/200511.
[Test] Remove test creating invalid assume operand bundles (#203945)
This was creating random assume operand bundles, using unsupported
attributes, and using invalid arguments for supported ones.
Rather than trying to salvage this test, delete it and the API it tests.
[mlir][OpenMP] Translate reductions on taskloop
Add LLVM IR translation for reduction and in_reduction clauses on omp.taskloop.context.
For taskloop reduction, emit the implicit taskgroup reduction setup and map each generated task to runtime-provided private reduction storage through __kmpc_task_reduction_get_th_data. For in_reduction, use the same runtime lookup path with a null descriptor to join an enclosing task reduction context.
Unsupported byref, cleanup, and two-argument initializer forms remain diagnosed.
Add MLIR translation tests for the supported taskloop reduction and in_reduction cases.
[clangd][nfc] Avoid type erasure for local recursive callbacks (#203042)
Four local clangd callbacks use std::function only to call themselves.
Switch to local structs and static functions to avoid std::function
type-erasure and copy-support machinery.
In matched Release AArch64 builds, the four object files shrink by 8,152
bytes and 131 relocations; linked clangd shrinks by 3,872 bytes
unstripped and 16 bytes stripped, with __text down 360 bytes,
__DATA_CONST,__const down 208 bytes, unwind data down 32 bytes, and 21
fewer dyld fixups.
Work towards #202616
AI tool disclosure: Co-authored with OpenAI Codex.
[AMDGPU] Track VALU instructions separately for WMMA coexecution hazards (#202523)
WMMA coexecution hazards can only be resolved by VALU instructions, not
S_NOPs. Track VALU/WMMA instructions separately so the scheduler can
accurately determine stall cycles.
Merge tag 'hfs-v7.2-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs
Pull hfs/hfsplus updates from Viacheslav Dubeyko:
"Several fixes in HFS/HFS+ of syzbot reported issues and HFS//HFS+
fixes of xfstests failures.
- fix a null-ptr-deref issue reported by syzbot (Edward Adam Davis)
If the attributes file is not loaded during system mount
hfsplus_create_attributes_file can dereference a NULL pointer.
Also, add a b-tree node size check in hfs_btree_open() with the
goal to prevent an uninit-value bug reported by syzbot for the case
of corrupted HFS+ image.
- fix __hfs_bnode_create() by using kzalloc_flex() instead of
kzalloc() (Rosen Penev)
- fix early return in hfs_bnode_read() (Tristan Madani)
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Merge tag 'nilfs2-v7.2-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/nilfs2
Pull nilfs2 updates from Viacheslav Dubeyko:
"Fixes of syzbot reported issue and various small fixes in NILFS2
functionality.
- fix hung task in nilfs_transaction_begin() (Deepanshu Kartikey)
Reported by syzbot. The root cause is that user-supplied segment
numbers were not validated before nilfs_clean_segments() began
doing work; the range check on each segnum was performed deep
inside the call chain by nilfs_sufile_updatev(), which emits a
nilfs_warn() per invalid entry while still holding the segctor lock
and the sufile mi_sem.
Fix it by validating the contents of kbufs[4] in
nilfs_clean_segments() immediately after acquiring ns_segctor_sem
via nilfs_transaction_lock().
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Merge tag 'for-7.2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"The most noticeable change is to enable large folios by default, it's
been in testing for a few releases. Related to that is huge folio
support (still under experimental config). Otherwise a few ioctl
updates, performance improvements and usual fixes and core changes.
User visible changes:
- enable large folios by default, added in 6.17 (under experimental
build), no feature limitations, a big change internally
- new ioctl to return raw checksums to userspace (a bit tricky given
compression and tail extents), can be used for mkfs and
deduplication optimizations
- provide stable UUID for e.g. overlayfs and temp_fsid, also
reflected in statvfs() field f_fsid, internal dev_t is hashed in to
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[libc] Generate a stub for libpthread.a (#200908)
Several build systems / existing scripts assume that pthread functions
are exposed through separate library (`libpthread.so` / `libpthread.a`)
and thus use `-lpthread` flag explicitly. Since llvm-libc puts all the
pthread functions into the regular `libc`, teach the CMake build rules
to produce an empty static archive `libpthread.a` for compatibility
purposes.
Merge tag 'dlm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland:
"There are four fixes/cleanups in this series; none are likely to be
issues in real usage:
- improve debugfs error exit path
- fix sequence number ordering in an artificial test case
- fix usercopy_abort for lvb data
- use hlist_for_each_entry_srcu for srcu lists"
* tag 'dlm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
dlm: init per node debugfs before add to node hash
dlm: fix add msg handle in send_queue ordered
dlm: add usercopy whitelist to dlm_cb cache
dlm: use hlist_for_each_entry_srcu for SRCU protected lists
[VPlan] Simplify reverse(reverse(x)) -> x (#199057)
This is a version of #196900 that performs the simplification as a
separate transform.
We need to add an additional `vp.splice.right(vp.splice.left(poison, x,
evl), poison, evl) -> x` simplification to avoid left over splices
whenever reverses are removed in an EVL tail folded loop.
Co-authored-by: Madhur Amilkanthwar <madhura at nvidia.com>
Merge tag 'fs_for_v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull udf, isofs, ext2, and quota updates from Jan Kara:
- Assorted udf & isofs fixes for maliciously formatted devices
- Cleanups to use kmalloc() instead of __get_free_page()
- Removal of deprecated DAX code from ext2
* tag 'fs_for_v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: validate VAT inode size for old VAT format
udf: validate VAT header length against the VAT inode size
udf: validate sparing table length as an entry count, not a byte count
isofs: bound Rock Ridge symlink components to the SL record
ext2: fix ignored return value of generic_write_sync()
ext2: Remove deprecated DAX support
isofs: replace __get_free_page() with kmalloc()
quota: allocate dquot_hash with kmalloc()
udf: validate free block extents against the partition length
Merge tag 'fsnotify_for_v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
- fanotify improvements for pidfd reporting
- small cleanup in fanotify_error_event_equal
* tag 'fsnotify_for_v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify: allow reporting pidfds for reaped tasks
fanotify: report thread pidfds for FAN_REPORT_TID
fanotify: simplify fanotify_error_event_equal
[llvm] Replace unordered_{map,set} with Dense{Map,Set} in llvm tools (#204058)
std::unordered_map is slow. Switch the remaining local maps and sets in
the command-line tools (llvm-profgen, llvm-profdata, llvm-objdump,
llvm-exegesis, llvm-xray, llvm-remarkutil) to DenseMap/DenseSet.
Merge tag 'xfs-merge-7.2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Carlos Maiolino:
"The main highlight is the removal of experimental tag of the zone
allocator feature.
Besides that, this contains a collection of bug fixes and code
refactoring but no new features have been added"
* tag 'xfs-merge-7.2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (29 commits)
xfs: shut down the filesystem on a failed mount
xfs: skip inode inactivation on a shut down mount
xfs: move XFS_LSN_CMP to xfs_log_format.h
xfs: shut down zoned file systems on writeback errors
xfs: cleanup xfs_growfs_compute_deltas
xfs: pass back updated nb from xfs_growfs_compute_deltas
xfs: fix pointer arithmetic error on 32-bit systems
xfs: initialize iomap->flags earlier in xfs_bmbt_to_iomap
xfs: only log freed extents for the current RTG in zoned growfs
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[lld][LoongArch] Fix range checking of R_LARCH_*_PCADD_HI20 relocations on 64-bit (#183233)
According to the la-abi-specs, the `R_LARCH_*_PCADD_HI20` relocations
are also used on 64-bit LoongArch. Fix the range checking accordingly.
