[asan] Reduce stack usage of DescribeThread() (#176540)
Manually eliminate tail calls, because the compiler didn't.
This fixes some rare crashes (stack overflows) that can occur during
ASan's error reporting, if there is a deep nesting structure to thread
creation. Besides that, it has no change to ASan's output.
[flang][OpenMP] Update semantic checks for LINEAR clause
Fixes https://github.com/llvm/llvm-project/issues/173980.
In particular, make step-simple-modifier be compatible (i.e. not
exclusive) for OpenMP spec versions < 52.
[libc][NFC] update configure page with wchar flag (#177050)
Whenever the cmake runs it updates configure.rst based on the contents
of config.json. This PR just applies the change generated after #176110
[libc] Cast in startup to silence warning (#177048)
In #174772 gcc warns on an implicit cast from `ElfW(Xword)` (unsigned
long
int) to `ElfW(word)` (unsigned int). This PR adds an explicit cast.
Merge tag 'devicetree-fixes-for-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix a refcount leak in of_alias_scan()
- Support descending into child nodes when populating nodes
in /firmware
* tag 'devicetree-fixes-for-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: fix reference count leak in of_alias_scan()
of: platform: Use default match table for /firmware
Fill entropy in a single operation instead of hundreds.
The sntrup761 code we use from SUPERCOP fills entropy arrays 4 bytes at
a time. On some platforms each of these operations has a significant
overhead, so instead fill it in a single operation and as a precaution
zero that array after it's used.
Analysis and code change is from Mike Frysinger via Github PR#621 with
feedback from djm@ and sed-ification from me. ok djm@ beck@.
This change was submitted by Mike to SUPERCOP upstream so hopefully
future versions will already have it.
[flang][cuda] Add cuf.device_address conversion into separate pass (#177035)
Some conversion are better done later in the pipeline. Add
cuf.device_address conversion in its own pass so it can be scheduled
late.
The pattern will be removed from CUFOpConversion once this pass has
landed.
[NFC][LTO] Move isPreservedName out of IRSymtab into LTO's Symbol
This resolves the FIXME in IRSymtab and cleans up the semantics of the
IRSymtab. The list of preserved symbols really shouldn't be seen as a
property of the IR symbol table, since it's an LTO-specific concern, and
it's very tenuous to claim that this information is actually present in
the bitcode file to be exposed through its symbol table.
Instead, this PR moves this logic into LTO's view of the symbol, which
allows consumers to determine preserved-ness themselves. This was broken
out of #164916; this prevents that PR from introducing a circular
dependency, but it still seems like an independently good idea by virtue
of the above.
[SPARC] Prevent RESTORE from sourcing from %o7 in call delay slots (#172593)
Combining instructions that reads from %o7 with a RESTORE in call delay
slots will result in a RESTORE instruction that reads from %o7, which
has been overwritten by the call instruction, resulting in junk values
being produced.
This should fix the issue with `test-suite::lencod.test`.
[libc][linux] add support to parse PT_GNU_PROPERTY (#174772)
In order to add Control-flow Enforcement Technology (CET) Shadow Stack
(SHSTK) support, we need to parse the `PT_GNU_PROPERTY` program header
and the corresponding section to evaluate if the binary being started
was compiled with the necessary support.
PS: This is my first PR to llvm-libc, I might have made obvious styling
mistakes so I'd appreciate any feedback or suggestions to improve it.
I have a prototype branch using this change to enable SHSTK support:
https://github.com/jakos-sec/llvm-project/tree/add-shstk-support
