Bridge speculative and prescient prefetchers
There are cases when we need to read large objects sequentially.
Prescient prefetcher may be limited by size, trying to prefetch
it all at once. Speculative prefetcher can do it nicer for ARC,
but needs a ramp-up period at the beginning.
To cover this gap, introduce dmu_prefetch_stream(), priming the
speculative prefetcher to either go full speed on first demand
request, or even start some prefetch immediately, but continue
following the demand later.
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Signed-off-by: Alexander Motin <alexander.motin at TrueNAS.com>
Closes #18351
[LLDB] Add allow_var_updates to DIL and CanUpdateVar to SetValueFromInteger (#186421)
In preparation for updating DIL to handle assignments, this adds a
member variable to the DIL Interpreter indicating whether or not
updating program variables is allowed. For invocations from the LLDB
command prompt (through "frame variable") we want to allow it, but from
other places we might not. Therefore we also add new StackFrame
ExpressionPathOption, eExpressionPathOptionsAllowVarUpdates, which we
add to calls from CommandObjectFrame, and which is checked in
GetValueForVariableExpressionPath. Finally, we also add a parameter,
can_update_vars, with a default value of true, to
ValueObject::SetValueFromInteger, as that will be the main function used
to by assignment in DIL.
[mlir][Arith] Avoid sign overflow when narrowing signed operations (#189676)
Whether an arith operation can be truncated to a given bitwidth should
also depend on the sign semantics of the operation itself. Consider:
```
%input = /* upper bound > INT32_MAX, <= UINT32_MAX */ : index
%c0 = arith.constant 0 : index
%cmp = arith.cmpi sle, %input, %c0 : index
```
Previously, `checkTruncatability()` would correctly judge that only an
unsigned truncation could be legal, however the narrowing would still
proceed despite the fact that the `sle` predicate treated the MSB as the
sign.
Ensure that the sign is checked for signed comparison predicates and for
signed elementwise operations by enforcing a `CastKind::Signed`
restriction, whereby the narrowing patterns bail out on incompatible
input range/operation signedness.
[11 lines not shown]
[MC] Move addEncodingComment() into new base class MCAsmBaseStreamer
This is in preparation to use this functionality in the
SystemZHLASMAsmStreamer. No functional change.
[CIR] Fix incorrect ConstArrayAttr trailing_zeros parsing (#188742)
Closes #187699 .
Fix incorrect parsing of `ConstArrayAttr`. `parse` method incorrectly
used type of `elts` parameter as type of the whole array. This means
that when reading back text or bytecode clangir files attribute did not
have correct type and correct `trailingZerosNum`. Type was always of
inner `elts`, meaning smaller then actual type if any trailing zeros
were present and `trailingZerosNum` was always zero.
wip/tex-tabto-ltx{,-doc}: import tex-tabto-ltx-1.4 as wip/tex-tabto-ltx
\tabto{<length>} moves the typesetting position to <length>
from the left margin of the paragraph. If the typesetting
position is already further along, \tabto starts a new line;
the command \tabto* will move position backwards if necessary,
so that previous text may be overwritten. The command
\TabPositions may be used to define a set of tabbing positions,
after which the command \tab advances typesetting position to
the next defined 'tab stop'.
[NFC] [clang] swap parameters to checkTargetOptions (#187608)
This is the correct order according to the function prototype.
This should be NFC, because for PCH, AllowCompatibleDifferences
is always false: it is only used in isAcceptableASTFile, which
calls readASTFileControlBlock, which explicitely passes false.
We explicitely pass in `nullptr` for Diag, so the incorrect error
message isn't printed.
wip/tex-pdf14{,-doc}: import tex-pdf14-0.1 as wip/tex-pdf14
Starting with TeX Live 2010, the various formats, that directly
generate PDF, default to generating PDF 1.5. This is generally
a good thing, but it can lead to compatibility issues with some
older PDF viewers. This package changes the version of PDF
generated with formats (based on pdfTeX or LuaTeX in PDF mode),
back to 1.4 for documents that need to achieve maximal
compatibility with old viewers.
wip/tex-nag{,-doc}: import tex-nag-0.7 as wip/tex-nag
Old habits die hard. All the same, there are commands, classes
and packages which are outdated and superseded. The nag package
provides routines to warn the user about the use of such
obsolete things. As an example, we provide an extension that
detects many of the "sins" described in l2tabu.
