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BuiltinAttributes.cpp
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BuiltinAttributes.cpp
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//===- BuiltinAttributes.cpp - MLIR Builtin Attribute Classes -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "mlir/IR/BuiltinAttributes.h"
#include "AttributeDetail.h"
#include "mlir/IR/AffineMap.h"
#include "mlir/IR/BuiltinDialect.h"
#include "mlir/IR/Dialect.h"
#include "mlir/IR/DialectResourceBlobManager.h"
#include "mlir/IR/IntegerSet.h"
#include "mlir/IR/OpImplementation.h"
#include "mlir/IR/Operation.h"
#include "mlir/IR/SymbolTable.h"
#include "mlir/IR/Types.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/Sequence.h"
#include "llvm/ADT/TypeSwitch.h"
#include "llvm/Support/Endian.h"
using namespace mlir;
using namespace mlir::detail;
//===----------------------------------------------------------------------===//
/// Tablegen Attribute Definitions
//===----------------------------------------------------------------------===//
#define GET_ATTRDEF_CLASSES
#include "mlir/IR/BuiltinAttributes.cpp.inc"
//===----------------------------------------------------------------------===//
// BuiltinDialect
//===----------------------------------------------------------------------===//
void BuiltinDialect::registerAttributes() {
addAttributes<
#define GET_ATTRDEF_LIST
#include "mlir/IR/BuiltinAttributes.cpp.inc"
>();
}
//===----------------------------------------------------------------------===//
// ArrayAttr
//===----------------------------------------------------------------------===//
void ArrayAttr::walkImmediateSubElements(
function_ref<void(Attribute)> walkAttrsFn,
function_ref<void(Type)> walkTypesFn) const {
for (Attribute attr : getValue())
walkAttrsFn(attr);
}
Attribute
ArrayAttr::replaceImmediateSubElements(ArrayRef<Attribute> replAttrs,
ArrayRef<Type> replTypes) const {
return get(getContext(), replAttrs);
}
//===----------------------------------------------------------------------===//
// DictionaryAttr
//===----------------------------------------------------------------------===//
/// Helper function that does either an in place sort or sorts from source array
/// into destination. If inPlace then storage is both the source and the
/// destination, else value is the source and storage destination. Returns
/// whether source was sorted.
template <bool inPlace>
static bool dictionaryAttrSort(ArrayRef<NamedAttribute> value,
SmallVectorImpl<NamedAttribute> &storage) {
// Specialize for the common case.
switch (value.size()) {
case 0:
// Zero already sorted.
if (!inPlace)
storage.clear();
break;
case 1:
// One already sorted but may need to be copied.
if (!inPlace)
storage.assign({value[0]});
break;
case 2: {
bool isSorted = value[0] < value[1];
if (inPlace) {
if (!isSorted)
std::swap(storage[0], storage[1]);
} else if (isSorted) {
storage.assign({value[0], value[1]});
} else {
storage.assign({value[1], value[0]});
}
return !isSorted;
}
default:
if (!inPlace)
storage.assign(value.begin(), value.end());
// Check to see they are sorted already.
bool isSorted = llvm::is_sorted(value);
// If not, do a general sort.
if (!isSorted)
llvm::array_pod_sort(storage.begin(), storage.end());
return !isSorted;
}
return false;
}
/// Returns an entry with a duplicate name from the given sorted array of named
/// attributes. Returns llvm::None if all elements have unique names.
static Optional<NamedAttribute>
findDuplicateElement(ArrayRef<NamedAttribute> value) {
const Optional<NamedAttribute> none{llvm::None};
if (value.size() < 2)
return none;
if (value.size() == 2)
return value[0].getName() == value[1].getName() ? value[0] : none;
const auto *it = std::adjacent_find(value.begin(), value.end(),
[](NamedAttribute l, NamedAttribute r) {
return l.getName() == r.getName();
});
return it != value.end() ? *it : none;
}
bool DictionaryAttr::sort(ArrayRef<NamedAttribute> value,
SmallVectorImpl<NamedAttribute> &storage) {
bool isSorted = dictionaryAttrSort</*inPlace=*/false>(value, storage);
assert(!findDuplicateElement(storage) &&
"DictionaryAttr element names must be unique");
return isSorted;
}
bool DictionaryAttr::sortInPlace(SmallVectorImpl<NamedAttribute> &array) {
bool isSorted = dictionaryAttrSort</*inPlace=*/true>(array, array);
assert(!findDuplicateElement(array) &&
"DictionaryAttr element names must be unique");
return isSorted;
}
Optional<NamedAttribute>
DictionaryAttr::findDuplicate(SmallVectorImpl<NamedAttribute> &array,
bool isSorted) {
if (!isSorted)
dictionaryAttrSort</*inPlace=*/true>(array, array);
return findDuplicateElement(array);
}
DictionaryAttr DictionaryAttr::get(MLIRContext *context,
ArrayRef<NamedAttribute> value) {
if (value.empty())
return DictionaryAttr::getEmpty(context);
// We need to sort the element list to canonicalize it.
SmallVector<NamedAttribute, 8> storage;
if (dictionaryAttrSort</*inPlace=*/false>(value, storage))
value = storage;
assert(!findDuplicateElement(value) &&
"DictionaryAttr element names must be unique");
return Base::get(context, value);
}
/// Construct a dictionary with an array of values that is known to already be
/// sorted by name and uniqued.
DictionaryAttr DictionaryAttr::getWithSorted(MLIRContext *context,
ArrayRef<NamedAttribute> value) {
if (value.empty())
return DictionaryAttr::getEmpty(context);
// Ensure that the attribute elements are unique and sorted.
assert(llvm::is_sorted(
value, [](NamedAttribute l, NamedAttribute r) { return l < r; }) &&
"expected attribute values to be sorted");
assert(!findDuplicateElement(value) &&
"DictionaryAttr element names must be unique");
return Base::get(context, value);
}
/// Return the specified attribute if present, null otherwise.
Attribute DictionaryAttr::get(StringRef name) const {
auto it = impl::findAttrSorted(begin(), end(), name);
return it.second ? it.first->getValue() : Attribute();
}
Attribute DictionaryAttr::get(StringAttr name) const {
auto it = impl::findAttrSorted(begin(), end(), name);
return it.second ? it.first->getValue() : Attribute();
}
/// Return the specified named attribute if present, None otherwise.
Optional<NamedAttribute> DictionaryAttr::getNamed(StringRef name) const {
auto it = impl::findAttrSorted(begin(), end(), name);
return it.second ? *it.first : Optional<NamedAttribute>();
}
Optional<NamedAttribute> DictionaryAttr::getNamed(StringAttr name) const {
auto it = impl::findAttrSorted(begin(), end(), name);
return it.second ? *it.first : Optional<NamedAttribute>();
}
/// Return whether the specified attribute is present.
bool DictionaryAttr::contains(StringRef name) const {
return impl::findAttrSorted(begin(), end(), name).second;
}
bool DictionaryAttr::contains(StringAttr name) const {
return impl::findAttrSorted(begin(), end(), name).second;
}
DictionaryAttr::iterator DictionaryAttr::begin() const {
return getValue().begin();
}
DictionaryAttr::iterator DictionaryAttr::end() const {
return getValue().end();
}
size_t DictionaryAttr::size() const { return getValue().size(); }
DictionaryAttr DictionaryAttr::getEmptyUnchecked(MLIRContext *context) {
return Base::get(context, ArrayRef<NamedAttribute>());
}
void DictionaryAttr::walkImmediateSubElements(
function_ref<void(Attribute)> walkAttrsFn,
function_ref<void(Type)> walkTypesFn) const {
for (const NamedAttribute &attr : getValue())
walkAttrsFn(attr.getValue());
}
Attribute
DictionaryAttr::replaceImmediateSubElements(ArrayRef<Attribute> replAttrs,
ArrayRef<Type> replTypes) const {
std::vector<NamedAttribute> vec = getValue().vec();
for (auto &it : llvm::enumerate(replAttrs))
vec[it.index()].setValue(it.value());
// The above only modifies the mapped value, but not the key, and therefore
// not the order of the elements. It remains sorted
return getWithSorted(getContext(), vec);
}
//===----------------------------------------------------------------------===//
// StridedLayoutAttr
//===----------------------------------------------------------------------===//
/// Prints a strided layout attribute.
void StridedLayoutAttr::print(llvm::raw_ostream &os) const {
auto printIntOrQuestion = [&](int64_t value) {
if (value == ShapedType::kDynamicStrideOrOffset)
os << "?";
else
os << value;
};
os << "strided<[";
llvm::interleaveComma(getStrides(), os, printIntOrQuestion);
os << "]";
if (getOffset() != 0) {
os << ", offset: ";
printIntOrQuestion(getOffset());
}
os << ">";
}
/// Returns the strided layout as an affine map.
AffineMap StridedLayoutAttr::getAffineMap() const {
return makeStridedLinearLayoutMap(getStrides(), getOffset(), getContext());
}
/// Checks that the type-agnostic strided layout invariants are satisfied.
LogicalResult
StridedLayoutAttr::verify(function_ref<InFlightDiagnostic()> emitError,
int64_t offset, ArrayRef<int64_t> strides) {
if (offset < 0 && offset != ShapedType::kDynamicStrideOrOffset)
return emitError() << "offset must be non-negative or dynamic";
if (llvm::any_of(strides, [&](int64_t stride) {
return stride <= 0 && stride != ShapedType::kDynamicStrideOrOffset;
})) {
return emitError() << "strides must be positive or dynamic";
}
return success();
}
/// Checks that the type-specific strided layout invariants are satisfied.
LogicalResult StridedLayoutAttr::verifyLayout(
ArrayRef<int64_t> shape,
function_ref<InFlightDiagnostic()> emitError) const {
if (shape.size() != getStrides().size())
return emitError() << "expected the number of strides to match the rank";
return success();
}
//===----------------------------------------------------------------------===//
// StringAttr
//===----------------------------------------------------------------------===//
StringAttr StringAttr::getEmptyStringAttrUnchecked(MLIRContext *context) {
return Base::get(context, "", NoneType::get(context));
}
/// Twine support for StringAttr.
StringAttr StringAttr::get(MLIRContext *context, const Twine &twine) {
// Fast-path empty twine.
if (twine.isTriviallyEmpty())
return get(context);
SmallVector<char, 32> tempStr;
return Base::get(context, twine.toStringRef(tempStr), NoneType::get(context));
}
/// Twine support for StringAttr.
StringAttr StringAttr::get(const Twine &twine, Type type) {
SmallVector<char, 32> tempStr;
return Base::get(type.getContext(), twine.toStringRef(tempStr), type);
}
StringRef StringAttr::getValue() const { return getImpl()->value; }
Type StringAttr::getType() const { return getImpl()->type; }
Dialect *StringAttr::getReferencedDialect() const {
return getImpl()->referencedDialect;
}
//===----------------------------------------------------------------------===//
// FloatAttr
//===----------------------------------------------------------------------===//
double FloatAttr::getValueAsDouble() const {
return getValueAsDouble(getValue());
}
double FloatAttr::getValueAsDouble(APFloat value) {
if (&value.getSemantics() != &APFloat::IEEEdouble()) {
bool losesInfo = false;
value.convert(APFloat::IEEEdouble(), APFloat::rmNearestTiesToEven,
&losesInfo);
}
return value.convertToDouble();
}
LogicalResult FloatAttr::verify(function_ref<InFlightDiagnostic()> emitError,
Type type, APFloat value) {
// Verify that the type is correct.
if (!type.isa<FloatType>())
return emitError() << "expected floating point type";
// Verify that the type semantics match that of the value.
if (&type.cast<FloatType>().getFloatSemantics() != &value.getSemantics()) {
return emitError()
<< "FloatAttr type doesn't match the type implied by its value";
}
return success();
}
//===----------------------------------------------------------------------===//
// SymbolRefAttr
//===----------------------------------------------------------------------===//
SymbolRefAttr SymbolRefAttr::get(MLIRContext *ctx, StringRef value,
ArrayRef<FlatSymbolRefAttr> nestedRefs) {
return get(StringAttr::get(ctx, value), nestedRefs);
}
FlatSymbolRefAttr SymbolRefAttr::get(MLIRContext *ctx, StringRef value) {
return get(ctx, value, {}).cast<FlatSymbolRefAttr>();
}
FlatSymbolRefAttr SymbolRefAttr::get(StringAttr value) {
return get(value, {}).cast<FlatSymbolRefAttr>();
}
FlatSymbolRefAttr SymbolRefAttr::get(Operation *symbol) {
auto symName =
symbol->getAttrOfType<StringAttr>(SymbolTable::getSymbolAttrName());
assert(symName && "value does not have a valid symbol name");
return SymbolRefAttr::get(symName);
}
StringAttr SymbolRefAttr::getLeafReference() const {
ArrayRef<FlatSymbolRefAttr> nestedRefs = getNestedReferences();
return nestedRefs.empty() ? getRootReference() : nestedRefs.back().getAttr();
}
void SymbolRefAttr::walkImmediateSubElements(
function_ref<void(Attribute)> walkAttrsFn,
function_ref<void(Type)> walkTypesFn) const {
walkAttrsFn(getRootReference());
for (FlatSymbolRefAttr ref : getNestedReferences())
walkAttrsFn(ref);
}
Attribute
SymbolRefAttr::replaceImmediateSubElements(ArrayRef<Attribute> replAttrs,
ArrayRef<Type> replTypes) const {
ArrayRef<Attribute> rawNestedRefs = replAttrs.drop_front();
ArrayRef<FlatSymbolRefAttr> nestedRefs(
static_cast<const FlatSymbolRefAttr *>(rawNestedRefs.data()),
rawNestedRefs.size());
return get(replAttrs[0].cast<StringAttr>(), nestedRefs);
}
//===----------------------------------------------------------------------===//
// IntegerAttr
//===----------------------------------------------------------------------===//
int64_t IntegerAttr::getInt() const {
assert((getType().isIndex() || getType().isSignlessInteger()) &&
"must be signless integer");
return getValue().getSExtValue();
}
int64_t IntegerAttr::getSInt() const {
assert(getType().isSignedInteger() && "must be signed integer");
return getValue().getSExtValue();
}
uint64_t IntegerAttr::getUInt() const {
assert(getType().isUnsignedInteger() && "must be unsigned integer");
return getValue().getZExtValue();
}
/// Return the value as an APSInt which carries the signed from the type of
/// the attribute. This traps on signless integers types!
APSInt IntegerAttr::getAPSInt() const {
assert(!getType().isSignlessInteger() &&
"Signless integers don't carry a sign for APSInt");
return APSInt(getValue(), getType().isUnsignedInteger());
}
LogicalResult IntegerAttr::verify(function_ref<InFlightDiagnostic()> emitError,
Type type, APInt value) {
if (IntegerType integerType = type.dyn_cast<IntegerType>()) {
if (integerType.getWidth() != value.getBitWidth())
return emitError() << "integer type bit width (" << integerType.getWidth()
<< ") doesn't match value bit width ("
<< value.getBitWidth() << ")";
return success();
}
if (type.isa<IndexType>())
return success();
return emitError() << "expected integer or index type";
}
BoolAttr IntegerAttr::getBoolAttrUnchecked(IntegerType type, bool value) {
auto attr = Base::get(type.getContext(), type, APInt(/*numBits=*/1, value));
return attr.cast<BoolAttr>();
}
//===----------------------------------------------------------------------===//
// BoolAttr
//===----------------------------------------------------------------------===//
bool BoolAttr::getValue() const {
auto *storage = reinterpret_cast<IntegerAttrStorage *>(impl);
return storage->value.getBoolValue();
}
bool BoolAttr::classof(Attribute attr) {
IntegerAttr intAttr = attr.dyn_cast<IntegerAttr>();
return intAttr && intAttr.getType().isSignlessInteger(1);
}
//===----------------------------------------------------------------------===//
// OpaqueAttr
//===----------------------------------------------------------------------===//
LogicalResult OpaqueAttr::verify(function_ref<InFlightDiagnostic()> emitError,
StringAttr dialect, StringRef attrData,
Type type) {
if (!Dialect::isValidNamespace(dialect.strref()))
return emitError() << "invalid dialect namespace '" << dialect << "'";
// Check that the dialect is actually registered.
MLIRContext *context = dialect.getContext();
if (!context->allowsUnregisteredDialects() &&
!context->getLoadedDialect(dialect.strref())) {
return emitError()
<< "#" << dialect << "<\"" << attrData << "\"> : " << type
<< " attribute created with unregistered dialect. If this is "
"intended, please call allowUnregisteredDialects() on the "
"MLIRContext, or use -allow-unregistered-dialect with "
"the MLIR opt tool used";
}
return success();
}
//===----------------------------------------------------------------------===//
// DenseElementsAttr Utilities
//===----------------------------------------------------------------------===//
/// Get the bitwidth of a dense element type within the buffer.
/// DenseElementsAttr requires bitwidths greater than 1 to be aligned by 8.
static size_t getDenseElementStorageWidth(size_t origWidth) {
return origWidth == 1 ? origWidth : llvm::alignTo<8>(origWidth);
}
static size_t getDenseElementStorageWidth(Type elementType) {
return getDenseElementStorageWidth(getDenseElementBitWidth(elementType));
}
/// Set a bit to a specific value.
static void setBit(char *rawData, size_t bitPos, bool value) {
if (value)
rawData[bitPos / CHAR_BIT] |= (1 << (bitPos % CHAR_BIT));
else
rawData[bitPos / CHAR_BIT] &= ~(1 << (bitPos % CHAR_BIT));
}
/// Return the value of the specified bit.
static bool getBit(const char *rawData, size_t bitPos) {
return (rawData[bitPos / CHAR_BIT] & (1 << (bitPos % CHAR_BIT))) != 0;
}
/// Copy actual `numBytes` data from `value` (APInt) to char array(`result`) for
/// BE format.
static void copyAPIntToArrayForBEmachine(APInt value, size_t numBytes,
char *result) {
assert(llvm::support::endian::system_endianness() == // NOLINT
llvm::support::endianness::big); // NOLINT
assert(value.getNumWords() * APInt::APINT_WORD_SIZE >= numBytes);
// Copy the words filled with data.
// For example, when `value` has 2 words, the first word is filled with data.
// `value` (10 bytes, BE):|abcdefgh|------ij| ==> `result` (BE):|abcdefgh|--|
size_t numFilledWords = (value.getNumWords() - 1) * APInt::APINT_WORD_SIZE;
std::copy_n(reinterpret_cast<const char *>(value.getRawData()),
numFilledWords, result);
// Convert last word of APInt to LE format and store it in char
// array(`valueLE`).
// ex. last word of `value` (BE): |------ij| ==> `valueLE` (LE): |ji------|
size_t lastWordPos = numFilledWords;
SmallVector<char, 8> valueLE(APInt::APINT_WORD_SIZE);
DenseIntOrFPElementsAttr::convertEndianOfCharForBEmachine(
reinterpret_cast<const char *>(value.getRawData()) + lastWordPos,
valueLE.begin(), APInt::APINT_BITS_PER_WORD, 1);
// Extract actual APInt data from `valueLE`, convert endianness to BE format,
// and store it in `result`.
// ex. `valueLE` (LE): |ji------| ==> `result` (BE): |abcdefgh|ij|
DenseIntOrFPElementsAttr::convertEndianOfCharForBEmachine(
valueLE.begin(), result + lastWordPos,
(numBytes - lastWordPos) * CHAR_BIT, 1);
}
/// Copy `numBytes` data from `inArray`(char array) to `result`(APINT) for BE
/// format.
static void copyArrayToAPIntForBEmachine(const char *inArray, size_t numBytes,
APInt &result) {
assert(llvm::support::endian::system_endianness() == // NOLINT
llvm::support::endianness::big); // NOLINT
assert(result.getNumWords() * APInt::APINT_WORD_SIZE >= numBytes);
// Copy the data that fills the word of `result` from `inArray`.
// For example, when `result` has 2 words, the first word will be filled with
// data. So, the first 8 bytes are copied from `inArray` here.
// `inArray` (10 bytes, BE): |abcdefgh|ij|
// ==> `result` (2 words, BE): |abcdefgh|--------|
size_t numFilledWords = (result.getNumWords() - 1) * APInt::APINT_WORD_SIZE;
std::copy_n(
inArray, numFilledWords,
const_cast<char *>(reinterpret_cast<const char *>(result.getRawData())));
// Convert array data which will be last word of `result` to LE format, and
// store it in char array(`inArrayLE`).
// ex. `inArray` (last two bytes, BE): |ij| ==> `inArrayLE` (LE): |ji------|
size_t lastWordPos = numFilledWords;
SmallVector<char, 8> inArrayLE(APInt::APINT_WORD_SIZE);
DenseIntOrFPElementsAttr::convertEndianOfCharForBEmachine(
inArray + lastWordPos, inArrayLE.begin(),
(numBytes - lastWordPos) * CHAR_BIT, 1);
// Convert `inArrayLE` to BE format, and store it in last word of `result`.
// ex. `inArrayLE` (LE): |ji------| ==> `result` (BE): |abcdefgh|------ij|
DenseIntOrFPElementsAttr::convertEndianOfCharForBEmachine(
inArrayLE.begin(),
const_cast<char *>(reinterpret_cast<const char *>(result.getRawData())) +
lastWordPos,
APInt::APINT_BITS_PER_WORD, 1);
}
/// Writes value to the bit position `bitPos` in array `rawData`.
static void writeBits(char *rawData, size_t bitPos, APInt value) {
size_t bitWidth = value.getBitWidth();
// If the bitwidth is 1 we just toggle the specific bit.
if (bitWidth == 1)
return setBit(rawData, bitPos, value.isOneValue());
// Otherwise, the bit position is guaranteed to be byte aligned.
assert((bitPos % CHAR_BIT) == 0 && "expected bitPos to be 8-bit aligned");
if (llvm::support::endian::system_endianness() ==
llvm::support::endianness::big) {
// Copy from `value` to `rawData + (bitPos / CHAR_BIT)`.
// Copying the first `llvm::divideCeil(bitWidth, CHAR_BIT)` bytes doesn't
// work correctly in BE format.
// ex. `value` (2 words including 10 bytes)
// ==> BE: |abcdefgh|------ij|, LE: |hgfedcba|ji------|
copyAPIntToArrayForBEmachine(value, llvm::divideCeil(bitWidth, CHAR_BIT),
rawData + (bitPos / CHAR_BIT));
} else {
std::copy_n(reinterpret_cast<const char *>(value.getRawData()),
llvm::divideCeil(bitWidth, CHAR_BIT),
rawData + (bitPos / CHAR_BIT));
}
}
/// Reads the next `bitWidth` bits from the bit position `bitPos` in array
/// `rawData`.
static APInt readBits(const char *rawData, size_t bitPos, size_t bitWidth) {
// Handle a boolean bit position.
if (bitWidth == 1)
return APInt(1, getBit(rawData, bitPos) ? 1 : 0);
// Otherwise, the bit position must be 8-bit aligned.
assert((bitPos % CHAR_BIT) == 0 && "expected bitPos to be 8-bit aligned");
APInt result(bitWidth, 0);
if (llvm::support::endian::system_endianness() ==
llvm::support::endianness::big) {
// Copy from `rawData + (bitPos / CHAR_BIT)` to `result`.
// Copying the first `llvm::divideCeil(bitWidth, CHAR_BIT)` bytes doesn't
// work correctly in BE format.
// ex. `result` (2 words including 10 bytes)
// ==> BE: |abcdefgh|------ij|, LE: |hgfedcba|ji------| This function
copyArrayToAPIntForBEmachine(rawData + (bitPos / CHAR_BIT),
llvm::divideCeil(bitWidth, CHAR_BIT), result);
} else {
std::copy_n(rawData + (bitPos / CHAR_BIT),
llvm::divideCeil(bitWidth, CHAR_BIT),
const_cast<char *>(
reinterpret_cast<const char *>(result.getRawData())));
}
return result;
}
/// Returns true if 'values' corresponds to a splat, i.e. one element, or has
/// the same element count as 'type'.
template <typename Values>
static bool hasSameElementsOrSplat(ShapedType type, const Values &values) {
return (values.size() == 1) ||
(type.getNumElements() == static_cast<int64_t>(values.size()));
}
//===----------------------------------------------------------------------===//
// DenseElementsAttr Iterators
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// AttributeElementIterator
DenseElementsAttr::AttributeElementIterator::AttributeElementIterator(
DenseElementsAttr attr, size_t index)
: llvm::indexed_accessor_iterator<AttributeElementIterator, const void *,
Attribute, Attribute, Attribute>(
attr.getAsOpaquePointer(), index) {}
Attribute DenseElementsAttr::AttributeElementIterator::operator*() const {
auto owner = getFromOpaquePointer(base).cast<DenseElementsAttr>();
Type eltTy = owner.getElementType();
if (auto intEltTy = eltTy.dyn_cast<IntegerType>())
return IntegerAttr::get(eltTy, *IntElementIterator(owner, index));
if (eltTy.isa<IndexType>())
return IntegerAttr::get(eltTy, *IntElementIterator(owner, index));
if (auto floatEltTy = eltTy.dyn_cast<FloatType>()) {
IntElementIterator intIt(owner, index);
FloatElementIterator floatIt(floatEltTy.getFloatSemantics(), intIt);
return FloatAttr::get(eltTy, *floatIt);
}
if (auto complexTy = eltTy.dyn_cast<ComplexType>()) {
auto complexEltTy = complexTy.getElementType();
ComplexIntElementIterator complexIntIt(owner, index);
if (complexEltTy.isa<IntegerType>()) {
auto value = *complexIntIt;
auto real = IntegerAttr::get(complexEltTy, value.real());
auto imag = IntegerAttr::get(complexEltTy, value.imag());
return ArrayAttr::get(complexTy.getContext(),
ArrayRef<Attribute>{real, imag});
}
ComplexFloatElementIterator complexFloatIt(
complexEltTy.cast<FloatType>().getFloatSemantics(), complexIntIt);
auto value = *complexFloatIt;
auto real = FloatAttr::get(complexEltTy, value.real());
auto imag = FloatAttr::get(complexEltTy, value.imag());
return ArrayAttr::get(complexTy.getContext(),
ArrayRef<Attribute>{real, imag});
}
if (owner.isa<DenseStringElementsAttr>()) {
ArrayRef<StringRef> vals = owner.getRawStringData();
return StringAttr::get(owner.isSplat() ? vals.front() : vals[index], eltTy);
}
llvm_unreachable("unexpected element type");
}
//===----------------------------------------------------------------------===//
// BoolElementIterator
DenseElementsAttr::BoolElementIterator::BoolElementIterator(
DenseElementsAttr attr, size_t dataIndex)
: DenseElementIndexedIteratorImpl<BoolElementIterator, bool, bool, bool>(
attr.getRawData().data(), attr.isSplat(), dataIndex) {}
bool DenseElementsAttr::BoolElementIterator::operator*() const {
return getBit(getData(), getDataIndex());
}
//===----------------------------------------------------------------------===//
// IntElementIterator
DenseElementsAttr::IntElementIterator::IntElementIterator(
DenseElementsAttr attr, size_t dataIndex)
: DenseElementIndexedIteratorImpl<IntElementIterator, APInt, APInt, APInt>(
attr.getRawData().data(), attr.isSplat(), dataIndex),
bitWidth(getDenseElementBitWidth(attr.getElementType())) {}
APInt DenseElementsAttr::IntElementIterator::operator*() const {
return readBits(getData(),
getDataIndex() * getDenseElementStorageWidth(bitWidth),
bitWidth);
}
//===----------------------------------------------------------------------===//
// ComplexIntElementIterator
DenseElementsAttr::ComplexIntElementIterator::ComplexIntElementIterator(
DenseElementsAttr attr, size_t dataIndex)
: DenseElementIndexedIteratorImpl<ComplexIntElementIterator,
std::complex<APInt>, std::complex<APInt>,
std::complex<APInt>>(
attr.getRawData().data(), attr.isSplat(), dataIndex) {
auto complexType = attr.getElementType().cast<ComplexType>();
bitWidth = getDenseElementBitWidth(complexType.getElementType());
}
std::complex<APInt>
DenseElementsAttr::ComplexIntElementIterator::operator*() const {
size_t storageWidth = getDenseElementStorageWidth(bitWidth);
size_t offset = getDataIndex() * storageWidth * 2;
return {readBits(getData(), offset, bitWidth),
readBits(getData(), offset + storageWidth, bitWidth)};
}
//===----------------------------------------------------------------------===//
// DenseArrayAttr
//===----------------------------------------------------------------------===//
LogicalResult
DenseArrayAttr::verify(function_ref<InFlightDiagnostic()> emitError,
RankedTensorType type, ArrayRef<char> rawData) {
if (type.getRank() != 1)
return emitError() << "expected rank 1 tensor type";
if (!type.getElementType().isIntOrIndexOrFloat())
return emitError() << "expected integer or floating point element type";
int64_t dataSize = rawData.size();
int64_t size = type.getShape().front();
if (type.getElementType().isInteger(1)) {
if (size != dataSize)
return emitError() << "expected " << size
<< " bytes for i1 array but got " << dataSize;
} else if (size * type.getElementTypeBitWidth() != dataSize * 8) {
return emitError() << "expected data size (" << size << " elements, "
<< type.getElementTypeBitWidth()
<< " bits each) does not match: " << dataSize
<< " bytes";
}
return success();
}
const bool *DenseArrayAttr::value_begin_impl(OverloadToken<bool>) const {
return cast<DenseBoolArrayAttr>().asArrayRef().begin();
}
const int8_t *DenseArrayAttr::value_begin_impl(OverloadToken<int8_t>) const {
return cast<DenseI8ArrayAttr>().asArrayRef().begin();
}
const int16_t *DenseArrayAttr::value_begin_impl(OverloadToken<int16_t>) const {
return cast<DenseI16ArrayAttr>().asArrayRef().begin();
}
const int32_t *DenseArrayAttr::value_begin_impl(OverloadToken<int32_t>) const {
return cast<DenseI32ArrayAttr>().asArrayRef().begin();
}
const int64_t *DenseArrayAttr::value_begin_impl(OverloadToken<int64_t>) const {
return cast<DenseI64ArrayAttr>().asArrayRef().begin();
}
const float *DenseArrayAttr::value_begin_impl(OverloadToken<float>) const {
return cast<DenseF32ArrayAttr>().asArrayRef().begin();
}
const double *DenseArrayAttr::value_begin_impl(OverloadToken<double>) const {
return cast<DenseF64ArrayAttr>().asArrayRef().begin();
}
namespace {
/// Instantiations of this class provide utilities for interacting with native
/// data types in the context of DenseArrayAttr.
template <size_t width,
IntegerType::SignednessSemantics signedness = IntegerType::Signless>
struct DenseArrayAttrIntUtil {
static bool checkElementType(Type eltType) {
auto type = eltType.dyn_cast<IntegerType>();
if (!type || type.getWidth() != width)
return false;
return type.getSignedness() == signedness;
}
static Type getElementType(MLIRContext *ctx) {
return IntegerType::get(ctx, width, signedness);
}
template <typename T>
static void printElement(raw_ostream &os, T value) {
os << value;
}
template <typename T>
static ParseResult parseElement(AsmParser &parser, T &value) {
return parser.parseInteger(value);
}
};
template <typename T>
struct DenseArrayAttrUtil;
/// Specialization for boolean elements to print 'true' and 'false' literals for
/// elements.
template <>
struct DenseArrayAttrUtil<bool> : public DenseArrayAttrIntUtil<1> {
static void printElement(raw_ostream &os, bool value) {
os << (value ? "true" : "false");
}
};
/// Specialization for 8-bit integers to ensure values are printed as integers
/// and not characters.
template <>
struct DenseArrayAttrUtil<int8_t> : public DenseArrayAttrIntUtil<8> {
static void printElement(raw_ostream &os, int8_t value) {
os << static_cast<int>(value);
}
};
template <>
struct DenseArrayAttrUtil<int16_t> : public DenseArrayAttrIntUtil<16> {};
template <>
struct DenseArrayAttrUtil<int32_t> : public DenseArrayAttrIntUtil<32> {};
template <>
struct DenseArrayAttrUtil<int64_t> : public DenseArrayAttrIntUtil<64> {};
/// Specialization for 32-bit floats.
template <>
struct DenseArrayAttrUtil<float> {
static bool checkElementType(Type eltType) { return eltType.isF32(); }
static Type getElementType(MLIRContext *ctx) { return Float32Type::get(ctx); }
static void printElement(raw_ostream &os, float value) { os << value; }
/// Parse a double and cast it to a float.
static ParseResult parseElement(AsmParser &parser, float &value) {
double doubleVal;
if (parser.parseFloat(doubleVal))
return failure();
value = doubleVal;
return success();
}
};
/// Specialization for 64-bit floats.
template <>
struct DenseArrayAttrUtil<double> {
static bool checkElementType(Type eltType) { return eltType.isF64(); }
static Type getElementType(MLIRContext *ctx) { return Float64Type::get(ctx); }
static void printElement(raw_ostream &os, float value) { os << value; }
static ParseResult parseElement(AsmParser &parser, double &value) {
return parser.parseFloat(value);
}
};
} // namespace
template <typename T>
void DenseArrayAttrImpl<T>::print(AsmPrinter &printer) const {
print(printer.getStream());
}
template <typename T>
void DenseArrayAttrImpl<T>::printWithoutBraces(raw_ostream &os) const {
llvm::interleaveComma(asArrayRef(), os, [&](T value) {
DenseArrayAttrUtil<T>::printElement(os, value);
});
}
template <typename T>
void DenseArrayAttrImpl<T>::print(raw_ostream &os) const {
os << "[";
printWithoutBraces(os);
os << "]";
}
/// Parse a DenseArrayAttr without the braces: `1, 2, 3`
template <typename T>
Attribute DenseArrayAttrImpl<T>::parseWithoutBraces(AsmParser &parser,
Type odsType) {
SmallVector<T> data;
if (failed(parser.parseCommaSeparatedList([&]() {
T value;
if (DenseArrayAttrUtil<T>::parseElement(parser, value))
return failure();
data.push_back(value);
return success();
})))
return {};
return get(parser.getContext(), data);
}
/// Parse a DenseArrayAttr: `[ 1, 2, 3 ]`
template <typename T>
Attribute DenseArrayAttrImpl<T>::parse(AsmParser &parser, Type odsType) {
if (parser.parseLSquare())
return {};
// Handle empty list case.
if (succeeded(parser.parseOptionalRSquare()))
return get(parser.getContext(), {});
Attribute result = parseWithoutBraces(parser, odsType);
if (parser.parseRSquare())
return {};
return result;
}
/// Conversion from DenseArrayAttr<T> to ArrayRef<T>.
template <typename T>
DenseArrayAttrImpl<T>::operator ArrayRef<T>() const {
ArrayRef<char> raw = getRawData();
assert((raw.size() % sizeof(T)) == 0);
return ArrayRef<T>(reinterpret_cast<const T *>(raw.data()),
raw.size() / sizeof(T));
}
/// Builds a DenseArrayAttr<T> from an ArrayRef<T>.
template <typename T>
DenseArrayAttrImpl<T> DenseArrayAttrImpl<T>::get(MLIRContext *context,
ArrayRef<T> content) {
auto shapedType = RankedTensorType::get(
content.size(), DenseArrayAttrUtil<T>::getElementType(context));
auto rawArray = ArrayRef<char>(reinterpret_cast<const char *>(content.data()),
content.size() * sizeof(T));
return Base::get(context, shapedType, rawArray)
.template cast<DenseArrayAttrImpl<T>>();
}
template <typename T>
bool DenseArrayAttrImpl<T>::classof(Attribute attr) {
if (auto denseArray = attr.dyn_cast<DenseArrayAttr>())
return DenseArrayAttrUtil<T>::checkElementType(denseArray.getElementType());
return false;
}
namespace mlir {
namespace detail {
// Explicit instantiation for all the supported DenseArrayAttr.
template class DenseArrayAttrImpl<bool>;
template class DenseArrayAttrImpl<int8_t>;
template class DenseArrayAttrImpl<int16_t>;
template class DenseArrayAttrImpl<int32_t>;
template class DenseArrayAttrImpl<int64_t>;
template class DenseArrayAttrImpl<float>;
template class DenseArrayAttrImpl<double>;
} // namespace detail
} // namespace mlir
//===----------------------------------------------------------------------===//
// DenseElementsAttr
//===----------------------------------------------------------------------===//
/// Method for support type inquiry through isa, cast and dyn_cast.
bool DenseElementsAttr::classof(Attribute attr) {
return attr.isa<DenseIntOrFPElementsAttr, DenseStringElementsAttr>();
}
DenseElementsAttr DenseElementsAttr::get(ShapedType type,
ArrayRef<Attribute> values) {
assert(hasSameElementsOrSplat(type, values));
// If the element type is not based on int/float/index, assume it is a string
// type.
Type eltType = type.getElementType();
if (!eltType.isIntOrIndexOrFloat()) {
SmallVector<StringRef, 8> stringValues;
stringValues.reserve(values.size());
for (Attribute attr : values) {
assert(attr.isa<StringAttr>() &&
"expected string value for non integer/index/float element");
stringValues.push_back(attr.cast<StringAttr>().getValue());
}
return get(type, stringValues);
}
// Otherwise, get the raw storage width to use for the allocation.
size_t bitWidth = getDenseElementBitWidth(eltType);
size_t storageBitWidth = getDenseElementStorageWidth(bitWidth);
// Compress the attribute values into a character buffer.
SmallVector<char, 8> data(
llvm::divideCeil(storageBitWidth * values.size(), CHAR_BIT));
APInt intVal;
for (unsigned i = 0, e = values.size(); i < e; ++i) {
if (auto floatAttr = values[i].dyn_cast<FloatAttr>()) {
assert(floatAttr.getType() == eltType &&
"expected float attribute type to equal element type");
intVal = floatAttr.getValue().bitcastToAPInt();