Error MappedBlockStream::readBytes(uint32_t Offset,
MutableArrayRef<uint8_t> Buffer) const {
uint32_t BlockNum = Offset / Pdb.getBlockSize();
uint32_t OffsetInBlock = Offset % Pdb.getBlockSize();
// Make sure we aren't trying to read beyond the end of the stream.
if (Buffer.size() > Data->getLength())
return make_error<RawError>(raw_error_code::insufficient_buffer);
if (Offset > Data->getLength() - Buffer.size())
return make_error<RawError>(raw_error_code::insufficient_buffer);
uint32_t BytesLeft = Buffer.size();
uint32_t BytesWritten = 0;
uint8_t *WriteBuffer = Buffer.data();
auto BlockList = Data->getStreamBlocks();
while (BytesLeft > 0) {
uint32_t StreamBlockAddr = BlockList[BlockNum];
auto Data = Pdb.getBlockData(StreamBlockAddr, Pdb.getBlockSize());
const uint8_t *ChunkStart = Data.data() + OffsetInBlock;
uint32_t BytesInChunk =
std::min(BytesLeft, Pdb.getBlockSize() - OffsetInBlock);
::memcpy(WriteBuffer + BytesWritten, ChunkStart, BytesInChunk);
BytesWritten += BytesInChunk;
BytesLeft -= BytesInChunk;
++BlockNum;
OffsetInBlock = 0;
}
return Error::success();
}
std::error_code ByteStream::readBytes(uint32_t Offset,
MutableArrayRef<uint8_t> Buffer) const {
if (Data.size() < Buffer.size() + Offset)
return std::make_error_code(std::errc::bad_address);
::memcpy(Buffer.data(), Data.data() + Offset, Buffer.size());
return std::error_code();
}
Error MappedBlockStream::readBytes(uint32_t Offset,
MutableArrayRef<uint8_t> Buffer) const {
uint32_t BlockNum = Offset / BlockSize;
uint32_t OffsetInBlock = Offset % BlockSize;
// Make sure we aren't trying to read beyond the end of the stream.
if (Buffer.size() > StreamLayout.Length)
return make_error<MSFError>(msf_error_code::insufficient_buffer);
if (Offset > StreamLayout.Length - Buffer.size())
return make_error<MSFError>(msf_error_code::insufficient_buffer);
uint32_t BytesLeft = Buffer.size();
uint32_t BytesWritten = 0;
uint8_t *WriteBuffer = Buffer.data();
while (BytesLeft > 0) {
uint32_t StreamBlockAddr = StreamLayout.Blocks[BlockNum];
ArrayRef<uint8_t> BlockData;
uint32_t Offset = blockToOffset(StreamBlockAddr, BlockSize);
if (auto EC = MsfData.readBytes(Offset, BlockSize, BlockData))
return EC;
const uint8_t *ChunkStart = BlockData.data() + OffsetInBlock;
uint32_t BytesInChunk = std::min(BytesLeft, BlockSize - OffsetInBlock);
::memcpy(WriteBuffer + BytesWritten, ChunkStart, BytesInChunk);
BytesWritten += BytesInChunk;
BytesLeft -= BytesInChunk;
++BlockNum;
OffsetInBlock = 0;
}
return Error::success();
}
Error ByteStream::readBytes(uint32_t Offset,
MutableArrayRef<uint8_t> Buffer) const {
if (Data.size() < Buffer.size() + Offset)
return make_error<RawError>(raw_error_code::insufficient_buffer);
::memcpy(Buffer.data(), Data.data() + Offset, Buffer.size());
return Error::success();
}
static Error writeBytes(uint32_t Offset, ArrayRef<uint8_t> Src,
MutableArrayRef<uint8_t> Dest) {
if (Dest.size() < Src.size())
return make_error<CodeViewError>(cv_error_code::insufficient_buffer);
if (Offset > Src.size() - Dest.size())
return make_error<CodeViewError>(cv_error_code::insufficient_buffer);
::memcpy(Dest.data() + Offset, Src.data(), Src.size());
return Error::success();
}
size_t AsmLexer::peekTokens(MutableArrayRef<AsmToken> Buf,
bool ShouldSkipSpace) {
const char *SavedTokStart = TokStart;
const char *SavedCurPtr = CurPtr;
bool SavedAtStartOfLine = IsAtStartOfLine;
bool SavedAtStartOfStatement = IsAtStartOfStatement;
bool SavedSkipSpace = SkipSpace;
std::string SavedErr = getErr();
SMLoc SavedErrLoc = getErrLoc();
SkipSpace = ShouldSkipSpace;
size_t ReadCount;
for (ReadCount = 0; ReadCount < Buf.size(); ++ReadCount) {
AsmToken Token = LexToken();
Buf[ReadCount] = Token;
if (Token.is(AsmToken::Eof))
break;
}
SetError(SavedErrLoc, SavedErr);
SkipSpace = SavedSkipSpace;
IsAtStartOfLine = SavedAtStartOfLine;
IsAtStartOfStatement = SavedAtStartOfStatement;
CurPtr = SavedCurPtr;
TokStart = SavedTokStart;
return ReadCount;
}
void RISCVAsmBackend::applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
const MCValue &Target,
MutableArrayRef<char> Data, uint64_t Value,
bool IsResolved,
const MCSubtargetInfo *STI) const {
MCContext &Ctx = Asm.getContext();
MCFixupKindInfo Info = getFixupKindInfo(Fixup.getKind());
if (!Value)
return; // Doesn't change encoding.
// Apply any target-specific value adjustments.
Value = adjustFixupValue(Fixup, Value, Ctx);
// Shift the value into position.
Value <<= Info.TargetOffset;
unsigned Offset = Fixup.getOffset();
unsigned NumBytes = alignTo(Info.TargetSize + Info.TargetOffset, 8) / 8;
assert(Offset + NumBytes <= Data.size() && "Invalid fixup offset!");
// For each byte of the fragment that the fixup touches, mask in the
// bits from the fixup value.
for (unsigned i = 0; i != NumBytes; ++i) {
Data[Offset + i] |= uint8_t((Value >> (i * 8)) & 0xff);
}
}
void AArch64AsmBackend::applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
const MCValue &Target,
MutableArrayRef<char> Data, uint64_t Value,
bool IsResolved) const {
unsigned NumBytes = getFixupKindNumBytes(Fixup.getKind());
if (!Value)
return; // Doesn't change encoding.
MCFixupKindInfo Info = getFixupKindInfo(Fixup.getKind());
MCContext &Ctx = Asm.getContext();
// Apply any target-specific value adjustments.
Value = adjustFixupValue(Fixup, Value, Ctx);
// Shift the value into position.
Value <<= Info.TargetOffset;
unsigned Offset = Fixup.getOffset();
assert(Offset + NumBytes <= Data.size() && "Invalid fixup offset!");
// Used to point to big endian bytes.
unsigned FulleSizeInBytes = getFixupKindContainereSizeInBytes(Fixup.getKind());
// For each byte of the fragment that the fixup touches, mask in the
// bits from the fixup value.
if (FulleSizeInBytes == 0) {
// Handle as little-endian
for (unsigned i = 0; i != NumBytes; ++i) {
Data[Offset + i] |= uint8_t((Value >> (i * 8)) & 0xff);
}
} else {
void ABISignature::expand(GenIR &Reader,
ArrayRef<ABIArgInfo::Expansion> Expansions,
Value *Source, MutableArrayRef<Value *> Values,
MutableArrayRef<Type *> Types, bool IsResult) {
assert(Source != nullptr);
assert(Source->getType()->isPointerTy());
assert(Reader.doesValueRepresentStruct(Source));
assert(Expansions.size() > 0);
assert((IsResult && Values.size() == 1) ||
(Values.size() == Expansions.size()));
LLVMContext &LLVMContext = *Reader.JitContext->LLVMContext;
IRBuilder<> &Builder = *Reader.LLVMBuilder;
Type *ResultType = nullptr;
Value *ResultValue = nullptr;
if (IsResult) {
ResultType = getExpandedResultType(LLVMContext, Expansions);
ResultValue = Constant::getNullValue(ResultType);
}
Type *BytePtrTy = Type::getInt8PtrTy(LLVMContext, 0);
Value *SourcePtr = Builder.CreatePointerCast(Source, BytePtrTy);
for (int32_t I = 0; I < static_cast<int32_t>(Expansions.size()); I++) {
const ABIArgInfo::Expansion &Exp = Expansions[I];
Value *LoadPtr = Builder.CreateConstGEP1_32(SourcePtr, Exp.Offset);
LoadPtr = Builder.CreatePointerCast(LoadPtr, Exp.TheType->getPointerTo(0));
const bool IsVolatile = false;
Value *Value = Builder.CreateLoad(LoadPtr, IsVolatile);
if (IsResult) {
ResultValue = Builder.CreateInsertValue(ResultValue, Value, I);
} else {
Values[I] = Value;
}
if (Types.size() > 0) {
Types[I] = Exp.TheType;
}
}
if (IsResult) {
Values[0] = ResultValue;
}
}
static bool remapTypesInSymbolRecord(ObjectFile *File,
MutableArrayRef<uint8_t> Contents,
ArrayRef<TypeIndex> TypeIndexMap,
ArrayRef<TiReference> TypeRefs) {
for (const TiReference &Ref : TypeRefs) {
unsigned ByteSize = Ref.Count * sizeof(TypeIndex);
if (Contents.size() < Ref.Offset + ByteSize) {
log("ignoring short symbol record");
return false;
}
MutableArrayRef<TypeIndex> TIs(
reinterpret_cast<TypeIndex *>(Contents.data() + Ref.Offset), Ref.Count);
for (TypeIndex &TI : TIs)
if (!remapTypeIndex(TI, TypeIndexMap)) {
log("ignoring symbol record in " + File->getName() +
" with bad type index 0x" + utohexstr(TI.getIndex()));
return false;
}
}
return true;
}
void AMDGPUAsmBackend::applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
const MCValue &Target,
MutableArrayRef<char> Data, uint64_t Value,
bool IsResolved,
const MCSubtargetInfo *STI) const {
Value = adjustFixupValue(Fixup, Value, &Asm.getContext());
if (!Value)
return; // Doesn't change encoding.
MCFixupKindInfo Info = getFixupKindInfo(Fixup.getKind());
// Shift the value into position.
Value <<= Info.TargetOffset;
unsigned NumBytes = getFixupKindNumBytes(Fixup.getKind());
uint32_t Offset = Fixup.getOffset();
assert(Offset + NumBytes <= Data.size() && "Invalid fixup offset!");
// For each byte of the fragment that the fixup touches, mask in the bits from
// the fixup value.
for (unsigned i = 0; i != NumBytes; ++i)
Data[Offset + i] |= static_cast<uint8_t>((Value >> (i * 8)) & 0xff);
}
CharTypeSet calculateRoles(StringRef Text, MutableArrayRef<CharRole> Roles) {
assert(Text.size() == Roles.size());
if (Text.size() == 0)
return 0;
CharType Type = packedLookup<CharType>(CharTypes, Text[0]);
CharTypeSet TypeSet = 1 << Type;
// Types holds a sliding window of (Prev, Curr, Next) types.
// Initial value is (Empty, Empty, type of Text[0]).
int Types = Type;
// Rotate slides in the type of the next character.
auto Rotate = [&](CharType T) { Types = ((Types << 2) | T) & 0x3f; };
for (unsigned I = 0; I < Text.size() - 1; ++I) {
// For each character, rotate in the next, and look up the role.
Type = packedLookup<CharType>(CharTypes, Text[I + 1]);
TypeSet |= 1 << Type;
Rotate(Type);
Roles[I] = packedLookup<CharRole>(CharRoles, Types);
}
// For the last character, the "next character" is Empty.
Rotate(Empty);
Roles[Text.size() - 1] = packedLookup<CharRole>(CharRoles, Types);
return TypeSet;
}
size_t AsmLexer::peekTokens(MutableArrayRef<AsmToken> Buf,
bool ShouldSkipSpace) {
SaveAndRestore<const char *> SavedTokenStart(TokStart);
SaveAndRestore<const char *> SavedCurPtr(CurPtr);
SaveAndRestore<bool> SavedAtStartOfLine(IsAtStartOfLine);
SaveAndRestore<bool> SavedAtStartOfStatement(IsAtStartOfStatement);
SaveAndRestore<bool> SavedSkipSpace(SkipSpace, ShouldSkipSpace);
SaveAndRestore<bool> SavedIsPeeking(IsPeeking, true);
std::string SavedErr = getErr();
SMLoc SavedErrLoc = getErrLoc();
size_t ReadCount;
for (ReadCount = 0; ReadCount < Buf.size(); ++ReadCount) {
AsmToken Token = LexToken();
Buf[ReadCount] = Token;
if (Token.is(AsmToken::Eof))
break;
}
SetError(SavedErrLoc, SavedErr);
return ReadCount;
}
void Scope::popPreservingValues(ArrayRef<ManagedValue> innerValues,
MutableArrayRef<ManagedValue> outerValues) {
auto &SGF = cleanups.SGF;
assert(innerValues.size() == outerValues.size());
// Record the cleanup information for each preserved value and deactivate its
// cleanup.
SmallVector<CleanupCloner, 4> cleanups;
cleanups.reserve(innerValues.size());
for (auto &mv : innerValues) {
cleanups.emplace_back(SGF, mv);
mv.forward(SGF);
}
// Pop any unpreserved cleanups.
pop();
// Create a managed value for each preserved value, cloning its cleanup.
// Since the CleanupCloner does not remember its SILValue, grab it from the
// original, now-deactivated managed value.
for (auto index : indices(innerValues)) {
outerValues[index] = cleanups[index].clone(innerValues[index].getValue());
}
}
bool swift::omitNeedlessWords(StringRef &baseName,
MutableArrayRef<StringRef> argNames,
StringRef firstParamName,
OmissionTypeName resultType,
OmissionTypeName contextType,
ArrayRef<OmissionTypeName> paramTypes,
bool returnsSelf,
bool isProperty,
const InheritedNameSet *allPropertyNames,
StringScratchSpace &scratch) {
bool anyChanges = false;
/// Local function that lowercases all of the base names and
/// argument names before returning.
auto lowercaseAcronymsForReturn = [&] {
StringRef newBaseName = toLowercaseWordAndAcronym(baseName, scratch);
if (baseName.data() != newBaseName.data()) {
baseName = newBaseName;
anyChanges = true;
}
for (StringRef &argName : argNames) {
StringRef newArgName = toLowercaseWordAndAcronym(argName, scratch);
if (argName.data() != newArgName.data()) {
argName = newArgName;
anyChanges = true;
}
}
return anyChanges;
};
// If the result type matches the context, remove the context type from the
// prefix of the name.
bool resultTypeMatchesContext = returnsSelf || (resultType == contextType);
if (resultTypeMatchesContext) {
StringRef newBaseName = omitNeedlessWordsFromPrefix(baseName, contextType,
scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
// Strip the context type from the base name of a method.
if (!isProperty) {
StringRef newBaseName = ::omitNeedlessWords(baseName, contextType,
NameRole::BaseNameSelf,
nullptr, scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
if (paramTypes.empty()) {
if (resultTypeMatchesContext) {
StringRef newBaseName = ::omitNeedlessWords(
baseName,
returnsSelf ? contextType : resultType,
NameRole::Property,
allPropertyNames,
scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
return lowercaseAcronymsForReturn();
}
// Omit needless words based on parameter types.
for (unsigned i = 0, n = argNames.size(); i != n; ++i) {
// If there is no corresponding parameter, there is nothing to
// omit.
if (i >= paramTypes.size()) continue;
// Omit needless words based on the type of the parameter.
NameRole role = i > 0 ? NameRole::SubsequentParameter
: argNames[0].empty() ? NameRole::BaseName
: NameRole::FirstParameter;
// Omit needless words from the name.
StringRef name = role == NameRole::BaseName ? baseName : argNames[i];
StringRef newName = ::omitNeedlessWords(name, paramTypes[i], role,
role == NameRole::BaseName
? allPropertyNames
: nullptr,
scratch);
// Did the name change?
if (name != newName)
anyChanges = true;
// If the first parameter has a default argument, and there is a
// preposition in the base name, split the base name at that preposition.
if (role == NameRole::BaseName && argNames[0].empty() &&
paramTypes[0].hasDefaultArgument()) {
// Scan backwards for a preposition.
auto nameWords = camel_case::getWords(newName);
auto nameWordRevIter = nameWords.rbegin(),
nameWordRevIterEnd = nameWords.rend();
bool found = false, done = false;
while (nameWordRevIter != nameWordRevIterEnd && !done) {
switch (getPartOfSpeech(*nameWordRevIter)) {
case PartOfSpeech::Preposition:
found = true;
done = true;
break;
case PartOfSpeech::Verb:
case PartOfSpeech::Gerund:
// Don't skip over verbs or gerunds.
done = true;
break;
case PartOfSpeech::Unknown:
++nameWordRevIter;
break;
}
}
// If we found a split point that's not at the beginning of the
// name, split there.
if (found) {
++nameWordRevIter;
unsigned splitPos = nameWordRevIter.base().getPosition();
if (splitPos > 0) {
unsigned afterSplitPos = splitPos;
// Create a first argument name with the remainder of the base name,
// lowercased. If we would end up with a vacuous name, go
// back and get the original.
StringRef newArgName = newName.substr(afterSplitPos);
if (isVacuousName(newArgName)) {
size_t pos = name.rfind(newArgName);
newArgName = name.substr(pos);
}
// If there is a leading "with" on the first argument, drop it.
if (newArgName.size() > 4 &&
camel_case::sameWordIgnoreFirstCase(
camel_case::getFirstWord(newArgName),
"with")) {
newArgName = newArgName.substr(4);
}
argNames[0] = toLowercaseWord(newArgName, scratch);
// Update the base name by splitting at the preposition.
newName = newName.substr(0, splitPos);
anyChanges = true;
}
}
}
if (name == newName) continue;
// Record this change.
if (role == NameRole::BaseName) {
baseName = newName;
} else {
argNames[i] = newName;
}
}
return lowercaseAcronymsForReturn();
}
static void emitSubSwitch(IRGenFunction &IGF,
MutableArrayRef<EnumPayload::LazyValue> values,
APInt mask,
MutableArrayRef<std::pair<APInt, llvm::BasicBlock *>> cases,
SwitchDefaultDest dflt) {
recur:
assert(!values.empty() && "didn't exit out when exhausting all values?!");
assert(!cases.empty() && "switching with no cases?!");
auto &DL = IGF.IGM.DataLayout;
auto &pv = values.front();
values = values.slice(1);
auto payloadTy = getPayloadType(pv);
unsigned size = DL.getTypeSizeInBits(payloadTy);
// Grab a chunk of the mask.
auto maskPiece = mask.zextOrTrunc(size);
mask = mask.lshr(size);
// If the piece is zero, this doesn't affect the switch. We can just move
// forward and recur.
if (maskPiece == 0) {
for (auto &casePair : cases)
casePair.first = casePair.first.lshr(size);
goto recur;
}
// Force the value we will test.
auto v = forcePayloadValue(pv);
auto payloadIntTy = llvm::IntegerType::get(IGF.IGM.getLLVMContext(), size);
// Need to coerce to integer for 'icmp eq' if it's not already an integer
// or pointer. (Switching or masking will also require a cast to integer.)
if (!isa<llvm::IntegerType>(v->getType())
&& !isa<llvm::PointerType>(v->getType()))
v = IGF.Builder.CreateBitOrPointerCast(v, payloadIntTy);
// Apply the mask if it's interesting.
if (!maskPiece.isAllOnesValue()) {
v = IGF.Builder.CreateBitOrPointerCast(v, payloadIntTy);
auto maskConstant = llvm::ConstantInt::get(payloadIntTy, maskPiece);
v = IGF.Builder.CreateAnd(v, maskConstant);
}
// Gather the values we will switch over for this payload chunk.
// FIXME: std::map is lame. Should hash APInts.
std::map<APInt, SmallVector<std::pair<APInt, llvm::BasicBlock*>, 2>, ult>
subCases;
for (auto casePair : cases) {
// Grab a chunk of the value.
auto valuePiece = casePair.first.zextOrTrunc(size);
// Index the case according to this chunk.
subCases[valuePiece].push_back({std::move(casePair.first).lshr(size),
casePair.second});
}
bool needsAdditionalCases = !values.empty() && mask != 0;
SmallVector<std::pair<llvm::BasicBlock *, decltype(cases)>, 2> recursiveCases;
auto blockForCases
= [&](MutableArrayRef<std::pair<APInt, llvm::BasicBlock*>> cases)
-> llvm::BasicBlock *
{
// If we need to recur, emit a new block.
if (needsAdditionalCases) {
auto newBB = IGF.createBasicBlock("");
recursiveCases.push_back({newBB, cases});
return newBB;
}
// Otherwise, we can jump directly to the ultimate destination.
assert(cases.size() == 1 && "more than one case for final destination?!");
return cases.front().second;
};
// If there's only one case, do a cond_br.
if (subCases.size() == 1) {
auto &subCase = *subCases.begin();
llvm::BasicBlock *block = blockForCases(subCase.second);
// If the default case is unreachable, we don't need to conditionally
// branch.
if (dflt.getInt()) {
IGF.Builder.CreateBr(block);
goto next;
}
auto &valuePiece = subCase.first;
llvm::Value *valueConstant = llvm::ConstantInt::get(payloadIntTy,
valuePiece);
valueConstant = IGF.Builder.CreateBitOrPointerCast(valueConstant,
v->getType());
auto cmp = IGF.Builder.CreateICmpEQ(v, valueConstant);
IGF.Builder.CreateCondBr(cmp, block, dflt.getPointer());
goto next;
}
// Otherwise, do a switch.
{
v = IGF.Builder.CreateBitOrPointerCast(v, payloadIntTy);
auto swi = IGF.Builder.CreateSwitch(v, dflt.getPointer(), subCases.size());
for (auto &subCase : subCases) {
auto &valuePiece = subCase.first;
auto valueConstant = llvm::ConstantInt::get(IGF.IGM.getLLVMContext(),
valuePiece);
swi->addCase(valueConstant, blockForCases(subCase.second));
}
}
next:
// Emit the recursive cases.
for (auto &recursive : recursiveCases) {
IGF.Builder.emitBlock(recursive.first);
emitSubSwitch(IGF, values, mask, recursive.second, dflt);
}
}
bool TargetInfo::validateInputConstraint(
MutableArrayRef<ConstraintInfo> OutputConstraints,
ConstraintInfo &Info) const {
const char *Name = Info.ConstraintStr.c_str();
if (!*Name)
return false;
while (*Name) {
switch (*Name) {
default:
// Check if we have a matching constraint
if (*Name >= '0' && *Name <= '9') {
const char *DigitStart = Name;
while (Name[1] >= '0' && Name[1] <= '9')
Name++;
const char *DigitEnd = Name;
unsigned i;
if (StringRef(DigitStart, DigitEnd - DigitStart + 1)
.getAsInteger(10, i))
return false;
// Check if matching constraint is out of bounds.
if (i >= OutputConstraints.size()) return false;
// A number must refer to an output only operand.
if (OutputConstraints[i].isReadWrite())
return false;
// If the constraint is already tied, it must be tied to the
// same operand referenced to by the number.
if (Info.hasTiedOperand() && Info.getTiedOperand() != i)
return false;
// The constraint should have the same info as the respective
// output constraint.
Info.setTiedOperand(i, OutputConstraints[i]);
} else if (!validateAsmConstraint(Name, Info)) {
// FIXME: This error return is in place temporarily so we can
// add more constraints as we hit it. Eventually, an unknown
// constraint should just be treated as 'g'.
return false;
}
break;
case '[': {
unsigned Index = 0;
if (!resolveSymbolicName(Name, OutputConstraints, Index))
return false;
// If the constraint is already tied, it must be tied to the
// same operand referenced to by the number.
if (Info.hasTiedOperand() && Info.getTiedOperand() != Index)
return false;
// A number must refer to an output only operand.
if (OutputConstraints[Index].isReadWrite())
return false;
Info.setTiedOperand(Index, OutputConstraints[Index]);
break;
}
case '%': // commutative
// FIXME: Fail if % is used with the last operand.
break;
case 'i': // immediate integer.
case 'n': // immediate integer with a known value.
break;
case 'I': // Various constant constraints with target-specific meanings.
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
if (!validateAsmConstraint(Name, Info))
return false;
break;
case 'r': // general register.
Info.setAllowsRegister();
break;
case 'm': // memory operand.
case 'o': // offsettable memory operand.
case 'V': // non-offsettable memory operand.
case '<': // autodecrement memory operand.
case '>': // autoincrement memory operand.
Info.setAllowsMemory();
break;
case 'g': // general register, memory operand or immediate integer.
case 'X': // any operand.
Info.setAllowsRegister();
Info.setAllowsMemory();
break;
case 'E': // immediate floating point.
case 'F': // immediate floating point.
case 'p': // address operand.
break;
case ',': // multiple alternative constraint. Ignore comma.
break;
case '#': // Ignore as constraint.
while (Name[1] && Name[1] != ',')
Name++;
break;
case '?': // Disparage slightly code.
case '!': // Disparage severely.
case '*': // Ignore for choosing register preferences.
break; // Pass them.
}
Name++;
}
return true;
}
WritableBinaryStreamRef::WritableBinaryStreamRef(MutableArrayRef<uint8_t> Data,
endianness Endian)
: BinaryStreamRefBase(std::make_shared<MutableArrayRefImpl>(Data, Endian),
0, Data.size()) {}
bool swift::omitNeedlessWords(StringRef &baseName,
MutableArrayRef<StringRef> argNames,
StringRef firstParamName,
OmissionTypeName resultType,
OmissionTypeName contextType,
ArrayRef<OmissionTypeName> paramTypes,
bool returnsSelf,
bool isProperty,
const InheritedNameSet *allPropertyNames,
StringScratchSpace &scratch) {
bool anyChanges = false;
/// Local function that lowercases all of the base names and
/// argument names before returning.
auto lowercaseAcronymsForReturn = [&] {
StringRef newBaseName = toLowercaseInitialisms(baseName, scratch);
if (baseName.data() != newBaseName.data()) {
baseName = newBaseName;
anyChanges = true;
}
for (StringRef &argName : argNames) {
StringRef newArgName = toLowercaseInitialisms(argName, scratch);
if (argName.data() != newArgName.data()) {
argName = newArgName;
anyChanges = true;
}
}
return anyChanges;
};
// If the result type matches the context, remove the context type from the
// prefix of the name.
bool resultTypeMatchesContext = returnsSelf || (resultType == contextType);
if (resultTypeMatchesContext) {
StringRef newBaseName = omitNeedlessWordsFromPrefix(baseName, contextType,
scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
// Strip the context type from the base name of a method.
if (!isProperty) {
StringRef newBaseName = ::omitNeedlessWords(baseName, contextType,
NameRole::BaseNameSelf,
allPropertyNames, scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
if (paramTypes.empty()) {
if (resultTypeMatchesContext) {
StringRef newBaseName = ::omitNeedlessWords(
baseName,
returnsSelf ? contextType : resultType,
NameRole::Property,
allPropertyNames,
scratch);
if (newBaseName != baseName) {
baseName = newBaseName;
anyChanges = true;
}
}
return lowercaseAcronymsForReturn();
}
// If needed, split the base name.
if (!argNames.empty() &&
splitBaseName(baseName, argNames[0], paramTypes[0], firstParamName))
anyChanges = true;
// Omit needless words based on parameter types.
for (unsigned i = 0, n = argNames.size(); i != n; ++i) {
// If there is no corresponding parameter, there is nothing to
// omit.
if (i >= paramTypes.size()) continue;
// Omit needless words based on the type of the parameter.
NameRole role = i > 0 ? NameRole::SubsequentParameter
: argNames[0].empty() ? NameRole::BaseName
: baseName == "init" ? NameRole::SubsequentParameter
: NameRole::FirstParameter;
// Omit needless words from the name.
StringRef name = role == NameRole::BaseName ? baseName : argNames[i];
StringRef newName = ::omitNeedlessWords(name, paramTypes[i], role,
role == NameRole::BaseName
? allPropertyNames
: nullptr,
scratch);
if (name == newName) continue;
// Record this change.
anyChanges = true;
if (role == NameRole::BaseName) {
baseName = newName;
} else {
argNames[i] = newName;
}
}
return lowercaseAcronymsForReturn();
}
