[SimpleLoopUnswitch] Allow trivial unswitch when exit LCSSA is a header PHI (#222962)
Trivial unswitch bails on a common loop shape: a loop-invariant branch
in the header that exits the loop returning a loop-carried value.
```
int acc = 0;
for (...) {
if (c)
return acc;
acc++;
}
```
After loop-rotate the `if` sits in the header, and the exit reads the
header PHI `%acc`. Trivial unswitch hoists the branch into the
preheader, so the exit value must be available there. It only accepts
loop-invariant values, and `%acc` is not one, so it gives up. But `%acc`
is safe here: the branch is invariant, so if the loop exits it exits on
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[flang][cuda] Record implicit pinned attribution in module files
Under -gpu=mem:pinned an unattributed ALLOCATABLE is attributed as pinned by
the compiler, the same way -gpu=mem:managed attributes one as managed, but
only the latter recorded that it had done so. The module file therefore spelled
an implicitly applied PINNED the same as one the user wrote, and a reader
treated it as a user requirement: adding -gpu=mem:pinned to a module's build
rejected its OpenACC-only consumers over an attribute the user never wrote.
Record the attribution for pinned as well, so it is written as
PINNED(IMPLICIT) and consumers can tell the two apart.
[orc-rt] Fix unit test. (#225299)
Use !! to convert EPI to bool, and ExecutorProcessInfo::pageSize() to
get the page size (ExecutorProcessInfo::PageSize is private).
[libomp] OpenMP 6.0 Device-Scope Environment Variables (#197191)
The patch introduces `_ALL` `_DEV` `_DEV_<id>` env var suffixes to the
LLVM's OpenMP host runtime `libomp`. The eligible-list env var currently
supports `OMP_NUM_THREADS`.
Assisted by Claude Opus 4.7 / Claude 4.6 Sonnet
[Clang][OpenMP] Delay `collapse/ordered` nest walk until instantiation (#225052)
Do not fold `collapse` and `ordered` counts in `checkOpenMPLoop` until
the expression is no longer instantiation-dependent.
Clause parsing already waits. The loop walker did not. A count like
`sizeof(sizeof(T() + T()))` was folded in the template, so Clang could
walk the wrong number of loops before instantiation.
mandoc: Drop -ieee754-2008 abbreviation
Improve manpage compatability by dropping an abbreviation macro that
compiler upstreams do not want, causing manuals using it to render
incorrectly on other toolchains or operating systems. It was only used
in three manuals, which are amended in this commit.
Reviewed by: fuz, markj
MFC after: no, these did not MFC
Requested by: Ingo Schwarze <schwarze at openbsd.org>
Fixes: db3884b03989 ("contrib/mandoc: add -ieee754-2008")
Fixes: 63cd0841de76 ("document .St -ieee754-2008 in mdoc")
Differential Revision: https://reviews.freebsd.org/D59880
mandoc: Drop -ieee754-2008 abbreviation
Improve manpage compatability by dropping an abbreviation macro that
compiler upstreams do not want, causing manuals using it to render
incorrectly on other toolchains or operating systems. It was only used
in three manuals, which are amended in this commit.
Reviewed by: fuz, markj
MFC after: no, these did not MFC
Requested by: Ingo Schwarze <schwarze at openbsd.org>
Fixes: db3884b03989 ("contrib/mandoc: add -ieee754-2008")
Fixes: 63cd0841de76 ("document .St -ieee754-2008 in mdoc")
Differential Revision: https://reviews.freebsd.org/D59880
