[DAG] canCreateUndefOrPoison - out of range vector insert/extract element indices only generate poison (#196720)
Matches ValueTracking / GISel implementations - although testing options are limited until DAG has actual uses of UndefPoisonKind::UndefOnly
libc: correct posix_spawn_file_actions_init ENOMEM error
The return value of posix_spawn_file_actions_init() is an error number.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D56911
clang: Add BoundArch/OffloadKind argument to getSupportedSanitizers
Currently the AMDGPU HIP and OpenMP toolchains falsely report
all host sanitizers are supported, and then go out of their way
to skip forwarding those to the device compiles. Add an offloading
kind argument so that in the future this can be handled in one
place in the base toolchain.
Co-authored-by: Claude Sonnet 4 <noreply at anthropic.com>
clang: Refactor handling of offload sanitizer arguments
Previously the AMDGPU toolchains hackily handled -fsanitize arguments.
They would lie and report that all host side sanitizers are available,
then TranslateArgs would filter out the device side cases that do not
work, providing diagnostics for the skipped cases. Move that logic
into the base sanitizer argument parsing.
This makes the produced diagnostics more consistent. Previously we
would get repeated warnings when a sanitizer is fully unsupported
by amdgpu, which should now be once for the toolchain. These could
be further improved; we're printing the specific field of -fsanitize
in more cases where it could be skipped. In other cases we have the
opposite problem, where we aren't reporting the exact sanitizer
from the -f flag in the case that depends on a subtarget feature.
This will help fix other broken target specific flag forwarding bugs
in the future.
Co-authored-by: Claude Sonnet 4 <noreply at anthropic.com>
[MCParser] .incbin: Don't retain the buffer, don't require NUL termination (#196696)
processIncbinFile uses SourceMgr::AddIncludeFile, which
* sets `RequiresNullTerminator=true` and disable `mmap` when the file
size is a multiple of the page size,
* and unnecessarily retains the throwaway buffer in `Buffers`.
Switch to OpenIncludeFile so the buffer is freed when processIncbinFile
returns, and pass RequiresNullTerminator=false. The buffer is consumed
only by emitBytes; the lexer never scans it, so it does not need a
trailing '\0' (different from #154972). Without that requirement,
MemoryBuffer mmaps the file and RSS tracks only the touched pages.
Stress test (1000 .incbin "blob.bin", 0, 16 against a 1 MiB blob):
```
Maximum RSS
Before 1042944 KiB
[3 lines not shown]
net-mgmt/p5-OSLV-Monitor: Update to 1.0.4
Also add p5-JSON-XS - it really does improve the speed when the
system is under high load.
This version also implements an exclude feature. For me, that
skips monitoring of short running jails, such as those started
by poudriere.
re: https://github.com/VVelox/OSLV-Monitor/releases/tag/1.0.4
[X86] Hoist ReservedIdentifiers to MCAsmInfo and shrink setup cost. NFC (#196699)
PR #186570 added a per-MCAsmInfo `StringSet<>` populated with X86
register names plus Intel-syntax keywords, which caused a minor
instructions:u increase.
Avoid heap allocation and hoist `ReservedIdentifiers` to MCAsmInfo for
other targets.
For the register-name source, prefer
`X86IntelInstPrinter::getRegisterName` over `MCRegisterInfo::getName`.
The former is a TableGen-emitted accessor into a `static const char
AsmStrs[]` pool in `X86GenAsmWriter1.inc`, populated from the lowercase
asm-name argument of each `def XX : X86Reg<"xx", ...>;` in
`X86RegisterInfo.td`.
[SelectionDAG] Split vector types for atomic load
Vector types that aren't widened are split
so that a single ATOMIC_LOAD is issued for the entire vector at once.
This change utilizes the load vectorization infrastructure in
SelectionDAG in order to group the vectors. This enables SelectionDAG
to translate vectors with type bfloat,half.
