This patch adds a capability to SmallVector to decide a number of
inlined elements automatically. The policy is:
- A minimum of 1 inlined elements, with more as long as
sizeof(SmallVector<T>) <= 64.
- If sizeof(T) is "too big", then trigger a static_assert: this dodges
the more pathological cases
This is expected to systematically improve SmallVector use in the
LLVM codebase, which has historically been plagued by semi-arbitrary /
cargo culted N parameters, often leading to bad outcomes due to
excessive sizeof(SmallVector<T, N>). This default also makes
programming more convenient by avoiding edit/rebuild cycles due to
forgetting to type the N parameter.
Differential Revision: https://reviews.llvm.org/D92522
This also teaches MachO writers/readers about the MachO cpu subtype,
beyond the minimal subtype reader support present at the moment.
This also defines a preprocessor macro to allow users to distinguish
__arm64__ from __arm64e__.
arm64e defaults to an "apple-a12" CPU, which supports v8.3a, allowing
pointer-authentication codegen.
It also currently defaults to ios14 and macos11.
Differential Revision: https://reviews.llvm.org/D87095
`AlignedArrayCharUnion` is now using `alignas`, which is properly
supported now by all the host toolchains we support. As a result, the
extra `alignas` on `IntervalMap` isn't needed anymore.
This is effectively a revert of 379daa29744cd96b0a87ed0d4a010fa4bc47ce73.
Differential Revision: https://reviews.llvm.org/D92509
Revert "Delete llvm::is_trivially_copyable and CMake variable HAVE_STD_IS_TRIVIALLY_COPYABLE"
This reverts commit 4d4bd40b578d77b8c5bc349ded405fb58c333c78.
This reverts commit 557b00e0afb2dc1776f50948094ca8cc62d97be4.
GCC<5 did not support std::is_trivially_copyable. Now LLVM builds
require 5.1 we can delete llvm::is_trivially_copyable after the users
have been migrated to std::is_trivially_copyable.
The static_assert in "libcxx/include/memory" was the main offender here,
but then I figured I might as well `git grep -i instantat` and fix all
the instances I found. One was in user-facing HTML documentation;
the rest were in comments or tests.
Truncates the APInt if the bit width is greater than the width specified,
otherwise do nothing
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D91445
The assertion logic in SmallVector::assertSafeToReferenceAfterResize is
hard to follow; split out SmallVector::isSafeToReferenceAfterResize and
add early returns and comments. No functionality change here.
There's no need to check for reference invalidation when
`SmallVector::resize` is shrinking; the parameter isn't accessed.
Differential Revision: https://reviews.llvm.org/D91832
2c196bbc6bd897b3dcc1d87a3baac28e1e88df41 asserted that
`SmallVector::push_back` doesn't invalidate the parameter when it needs
to grow. Do the same for `resize`, `append`, `assign`, `insert`, and
`emplace_back`.
Differential Revision: https://reviews.llvm.org/D91744
Factor out `SmallVectorImple::insert_one_impl`, a common implementation
for `insert(iterator, T&&)` and `insert(iterator, T const&)`. This is
just a clean up and has no functionality change.
Differential Revision: https://reviews.llvm.org/D91674
This assertion ensures the input value isn't part of the vector when
growing is required. In such cases the vector will grow and the input
value is invalidated before being read from.
This found 14 failed Tests.
Reviewed By: bkramer
Differential Revision: https://reviews.llvm.org/D84293
If an enum has different names for the same constant, make sure only the first one declared gets added into the switch. Failing to do so results in a compiler error as 2 case labels can't represent the same value.
```
lang=c
enum Numbers{
One,
Un = One,
Two,
Deux = Two,
Three,
Trois = Three
};
// Old behaviour
switch (<Number>) {
case One:
case Un:
case Two:
case Duex:
case Three:
case Trois: break;
}
// New behaviour
switch (<Number>) {
case One:
case Two:
case Three: break;
}
```
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D90555
This is convenient in a lot of cases, such as when the thing you want
to append is `someReallyLongFunctionName()` that you'd rather not
write twice or assign to a variable for the paired begin/end calls.
Differential Revision: https://reviews.llvm.org/D90894
Adds a method called pop_back_n to SmallVector.
This is more readable and less error prone than the alternatives of using
```lang=c++
Vector.resize(Vector.size() - N);
Vector.erase(Vector.end() - N, Vector.end());
for (unsigned I = 0;I<N;++I) Vector.pop_back();
```
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D90576
For PS4 development we support dllimport/export annotations in
source code. This patch enables the dllimport/export attributes
on PS4 by adding a new function to query the triple for whether
dllimport/export are used and using that function to decide
whether these attributes are supported. This replaces the current
method of checking if the target is Windows.
This means we can drop the use of "TargetArch" in the .td file
(which is an improvement as dllimport/export support isn't really
a function of the architecture).
I have included a simple codgen test to show that the attributes
are accepted and have an effect on codegen for PS4. I have also
enabled the DLLExportStaticLocal and DLLImportStaticLocal
attributes, which we support downstream. However, I am unable to
write a test for these attributes until other patches for PS4
dllimport/export handling land upstream. Whilst writing this
patch I noticed that, as these attributes are internal, they do
not need to be target specific (when these attributes are added
internally in Clang the target specific checks have already been
run); however, I think leaving them target specific is fine
because it isn't harmful and they "really are" target specific
even if that has no functional impact.
Differential Revision: https://reviews.llvm.org/D90442
A common pattern when using SmallString is to repeatedly call append to build a larger string.
The issue here is the optimizer can't see through this and often has to check there is enough space in the storage for each string you try to append.
This results in lots of conditional branches and potentially multiple calls to grow needing to be emitted if the buffer wasn't large enough.
By taking an initializer_list of StringRefs, SmallString can preallocate the storage it needs for all of the StringRefs which only need to grow one time at most, then use a fast path of copying all the strings into its storage knowing there is guaranteed to be enough capacity.
By using StringRefs, this also means you can append different string like types in one go as they will all be implicitly converted to a StringRef.
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D90386
The `Root` member of `ImmutableMapRef` was changed recently from a plain
pointer to `IntrusiveRefCntPtr`. However, the `Profile` member function
was not adjusted. This results in comilation error whenever the
`Profile` method is used on an `ImmutableMapRef`. This patch fixes this
issue and also adds unit tests for `ImmutableMapRef`.
Differential Revision: https://reviews.llvm.org/D89486
This method is at the core of the conversion from hex to binary, and using a lookup table great improves the compile time of hex conversions.
Context: In MLIR we use hex strings to represent very large constants in the textual format of the IR. These changes lead to a large decrease in compile time when parsing these constants (>1 second -> 350 miliseconds).
Differential Revision: https://reviews.llvm.org/D90320
This revision adds a fail-able/checked version of `fromHex` that fails when the input string contains a non-hex character. This removes the need for users to have a separate check for if the string contains all hex digits. This becomes very costly for large hex strings given that checking if a string contains only hex digits is effectively the same as just converting it in the first place.
Context: In MLIR we use hex strings to represent very large constants in the textual format of the IR. These changes lead to a large decrease in compile time when parsing these constants (2 seconds -> 1 second).
Differential Revision: https://reviews.llvm.org/D90265
The `Root` member of `ImmutableMapRef` was changed recently from a plain
pointer to `IntrusiveRefCntPtr`. However, the `Profile` member function
was not adjusted. This results in comilation error whenever the
`Profile` method is used on an `ImmutableMapRef`. This patch fixes this
issue and also adds unit tests for `ImmutableMapRef`.
Differential Revision: https://reviews.llvm.org/D89486
AlignedCharArrayUnion is really only needed to handle the "union" case
when we need memory of suitable size and alignment for multiple types.
SmallVector only needs storage for one type, so use that directly.
Summary:
This patch does the following:
1. Make InitTargetOptionsFromCodeGenFlags() accepts Triple as a
parameter, because some options' default value is triple dependant.
2. DataSections is turned on by default on AIX for llc.
3. Test cases change accordingly because of the default behaviour change.
4. Clang Driver passes in -fdata-sections by default on AIX.
Reviewed By: MaskRay, DiggerLin
Differential Revision: https://reviews.llvm.org/D88737
This reverts commit 281703e67ffaee8e26efef86e0df3e145477f4cb.
GCC 5.4 bugs are worked around by avoiding use of variable templates.
Differential Revision: https://reviews.llvm.org/D88977
This allows overload sets containing function_ref arguments to work correctly
Otherwise they're ambiguous as anything "could be" converted to a function_ref.
This matches proposed std::function_ref, absl::function_ref, etc.
Differential Revision: https://reviews.llvm.org/D88901
Previously methods `FPOptions::get*` returned unsigned value even if the
corresponding property was represented by specific enumeration type. With
this change such methods return actual type of the property. It also
allows printing value of a property as text rather than integer code.
Differential Revision: https://reviews.llvm.org/D87812
Consistently use the same pattern of returning *this from the clearUnusedBits() call to allow us to early out from the isSingleWord() path and avoid an else statement.
Some constructors of IEEEFloat do not initialize member variable exponent.
Fix it by initializing exponent with the following values:
For NaNs, the `exponent` is `maxExponent+1`.
For Infinities, the `exponent` is `maxExponent+1`.
For Zeroes, the `exponent` is `maxExponent-1`.
Patch by: @nullptr.cpp (Yang Fan)
Differential Revision: https://reviews.llvm.org/D86997
Since the parameter is not used anywhere, and the default size of 16
apparently causes PR47359, remove it. This ensures that IntervalMap will
automatically determine the optimal size, using its NodeSizer struct.
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D87044
This patch changes errors in `SmallVector::grow` that are independent of
memory capacity to be reported using report_fatal_error or
std::length_error instead of report_bad_alloc_error, which falsely signals
an OOM.
It also cleans up a few related things:
- makes report_bad_alloc_error to print the failure reason passed
to it.
- fixes the documentation to indicate that report_bad_alloc_error
calls `abort()` not "an assertion"
- uses a consistent name for the size/capacity argument to `grow`
and `grow_pod`
Reviewed By: mehdi_amini, MaskRay
Differential Revision: https://reviews.llvm.org/D86892
Before upstream a new target called CSKY, make a new triple of that called Triple::csky.
For now, it's a 32-bit little endian target and the detail can be referred at D86269.
This is the split part of D86269, which add a new target called CSKY.
Differential Revision: https://reviews.llvm.org/D86505
If the type T is incomplete then sizeof(T) results in C++ compilation error at line:
static constexpr bool value = sizeof(T) <= (2 * sizeof(void *));
This patch allows incomplete types in parameters of function. Example:
using SomeFunc = void(SomeIncompleteType &);
llvm::unique_function<SomeFuncType> SomeFunc;
Reviewers: DaniilSuchkov, vvereschaka
Differential Revision: https://reviews.llvm.org/D81554
This patch moves FixedPointSemantics and APFixedPoint
from Clang to LLVM ADT.
This will make it easier to use the fixed-point
classes in LLVM for constructing an IR builder for
fixed-point and for reusing the APFixedPoint class
for constant evaluation purposes.
RFC: http://lists.llvm.org/pipermail/llvm-dev/2020-August/144025.html
Reviewed By: leonardchan, rjmccall
Differential Revision: https://reviews.llvm.org/D85312
Adds the binary format goff and the operating system zos to the triple
class. goff is selected as default binary format if zos is choosen as
operating system. No further functionality is added.
Reviewers: efriedma, tahonermann, hubert.reinterpertcast, MaskRay
Reviewed By: efriedma, tahonermann, hubert.reinterpertcast
Differential Revision: https://reviews.llvm.org/D82081
`DenseMapAPIntKeyInfo` is now located in `lib/IR/LLVMContextImpl.h`.
Moved it into `include/ADT/DenseMapInfo.h` to use it.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D85131
This is a split patch of D80991.
This patch introduces AAPotentialValues and its interface only.
For more detail of AAPotentialValues abstract attribute, see the original patch.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D83283
We can implement find_first_unset_in() in the same function
if every BitWord we use is first flipped.
Differential Revision: https://reviews.llvm.org/D84717
Summary:
Refactor Succ/Pred maps to have a single map lookup when constructing
children. The preivous desing made sense when used by GraphTraits.
This more closely matches the previous approach in DomTree.
Reviewers: dblaikie
Subscribers: llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D84567
Adds a range-based version of `std::move`, the version that moves a range, not the one that creates r-value references.
Reviewed By: dblaikie, gamesh411
Differential Revision: https://reviews.llvm.org/D83902
Replace `std::is_same<X, std::random_access_iterator_tag>` with `std::is_base_of<std::random_access_iterator_tag, X>` in STLExtra algos.
This doesn't have too much impact on LLVM internally as no structs derive from it.
However external projects embedding LLVM may use `std::contiguous_iterator_tag` which should be considered by these algorithms.
As well as any other potential tags people want to define derived from `std::random_access_iterator_tag`
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D84141
Summary:
All tuple values are passed directly to hash_combine. This is inspired by the implementation used for Swift:
4a1b4edbe1845f3829b9
Reviewers: gribozavr2
Reviewed By: gribozavr2
Subscribers: dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D83887
This is intended to address a compile-time regression from
1eddce4177cfddc86d4696b758904443b0b4f193. A SmallPtrSet was
replaced with a SetVector there, which had an unexpected large
compile-time impact. It turns out that this structure is getting
swapped a lot, and previously this used an optimized std::swap()
specialization for SmallPtrSet. Now it ends up using the default,
triple-move based implementation, which is much more expensive.
This patch (partly) addresses the issue by specializing std::swap()
for SetVector.
Differential Revision: https://reviews.llvm.org/D82230
This reverts commit 1d542f0ca83fa1411d6501a8d088450d83abd5b8.
`recollectUses()` is added to prevent looking at dead uses after
Attributor run.
This is the first and most basic ICV Tracking implementation. For this
first version, we only support deduplication within the same BB.
Reviewers: jdoerfert, JonChesterfield, hamax97, jhuber6, uenoku,
baziotis, lebedev.ri
Differential Revision: https://reviews.llvm.org/D81788
This risks ODR violations in inline functions that call these functions
(if they remain static) & otherwise just causes some object size
increase, potentially, by these functions not being deduplicated by the
linker.
These map to the similar accessors on ArrayRef and other random access containers.
This fixes a compilation error on MLIR ODS for variadic operands/results, which relied on the availability of front in certain situations.
This change ensures that the Darwin driver doesn't add unsupported libraries to the link
invocation when linking the Apple Silicon macOS slice.
rdar://61011136
Differential Revision: https://reviews.llvm.org/D82696
This reverts commit 01bf8cdf5fa9bc71869e15e5e351b2b68c39feb6.
Breaks the build:
llvm/include/llvm/ADT/FunctionExtras.h:223:7: error: explicit template argument list not allowed
223 | Callbacks<CallableT, CalledAs, EnableIfTrivial<CallableT>>;
Summary:
This technique should extend to rvalue-qualified etc, but I didn't add any.
I removed "volatile" from the future plans, which seems... speculative at best.
While here I moved the callbacks object out of the constructor into a
variable template, which I believe addresses the fixme there about unused
objects.
(I'm not a template guru, so it's always possible the old version was designed
for compile-time performance in a way I'm missing)
Reviewers: kadircet
Subscribers: dexonsmith, llvm-commits, chandlerc
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D82581
Context:
--------
There are places in LLVM where we need to pack typed fields into opaque values.
For instance, the `XXXInst` classes in `llvm/include/llvm/IR/Instructions.h` that extract informations from `Value::SubclassData` via `getSubclassDataFromInstruction()`.
The bit twiddling is done manually: this impairs readability and prevent consistent handling of out of range values (e.g. 435b458ad0/llvm/include/llvm/IR/Instructions.h (L564))
More importantly, the bit pattern is scattered throughout the implementation making it hard to pack additionnal fields or check for overlapping bits.
Design decisions:
-----------------
The Bitfield structs are to be declared together so it is clear which bits are used or not.
The code is designed with simplicity in mind, hence a few limitations:
- Storage is limited to a single integer,
- Enum values have to be `unsigned`,
- Storage type has to be `unsigned`,
- There are no automatic detection of overlapping fields (packed bitfield declaration should help though),
- The interface is C like so `storage` needs to be passed in everytime (code is simpler and lifetime considerations more obvious)
RFC: http://lists.llvm.org/pipermail/llvm-dev/2020-June/142196.html
Differential Revision: https://reviews.llvm.org/D81580
macOS goes to 11! This commit adds support for the new version number by ensuring
that existing version comparison routines, and the 'darwin' OS identifier
understands the new numbering scheme. It also adds a new utility method
'getCanonicalVersionForOS', which lets users translate some uses of
macOS 10.16 into macOS 11. This utility method will be used in upcoming
clang and swift commits.
Differential Revision: https://reviews.llvm.org/D82337
- Fixed a bug in hasNItems()
- Extend the STLExtras unit test to test hasSingleElement() and hasNItems() and friends.
Differential Revision: https://reviews.llvm.org/D82232
Summary:
UBSan buildbot caught an undefined behavior in itostr with INT64_MIN.
The negation cannot be represented in the promoted operand (long long).
Negation is well defined on unsigned value though so this commit does
the negation after the static cast.
Reviewers: jhenderson, chandlerc, lattner
Reviewed By: lattner
Subscribers: dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D82200
