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Revert "Simplify some more ownership using forward_list<T> rather than vector<unique_ptr<T>>" 

This reverts commit r222935 and its follow-up r222938 ("Push unique_ptr
a bit further through some APIs and simplify some cleanup"), since it
causes bot failures (at least on Darwin):

http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental/1391/

llvm-svn: 222943
This commit is contained in:
Duncan P. N. Exon Smith 2014-11-28 23:00:22 +00:00
parent 8596f71910
commit 5a48cafb6b
1 changed files with 82 additions and 66 deletions
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148
llvm/utils/TableGen/AsmMatcherEmitter.cpp
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@ -395,10 +395,6 @@ struct MatchableInfo {
/// matchable came from.
Record *const TheDef;
/// AsmString - The assembly string for this instruction (with variants
/// removed), e.g. "movsx $src, $dst".
std::string AsmString;
/// DefRec - This is the definition that it came from.
PointerUnion<const CodeGenInstruction*, const CodeGenInstAlias*> DefRec;
@ -412,6 +408,10 @@ struct MatchableInfo {
/// MCInst.
SmallVector<ResOperand, 8> ResOperands;
/// AsmString - The assembly string for this instruction (with variants
/// removed), e.g. "movsx $src, $dst".
std::string AsmString;
/// Mnemonic - This is the first token of the matched instruction, its
/// mnemonic.
StringRef Mnemonic;
@ -434,14 +434,19 @@ struct MatchableInfo {
bool HasDeprecation;
MatchableInfo(const CodeGenInstruction &CGI)
: AsmVariantID(0), TheDef(CGI.TheDef), AsmString(CGI.AsmString),
DefRec(&CGI) {}
: AsmVariantID(0), TheDef(CGI.TheDef), DefRec(&CGI),
AsmString(CGI.AsmString) {
}
MatchableInfo(std::unique_ptr<CodeGenInstAlias> Alias)
: AsmVariantID(0), TheDef(Alias->TheDef), AsmString(Alias->AsmString),
DefRec(Alias.release()) {}
MatchableInfo(const CodeGenInstAlias *Alias)
: AsmVariantID(0), TheDef(Alias->TheDef), DefRec(Alias),
AsmString(Alias->AsmString) {
}
~MatchableInfo() { delete DefRec.dyn_cast<const CodeGenInstAlias *>(); }
~MatchableInfo() {
if (DefRec.is<const CodeGenInstAlias*>())
delete DefRec.get<const CodeGenInstAlias*>();
}
// Two-operand aliases clone from the main matchable, but mark the second
// operand as a tied operand of the first for purposes of the assembler.
@ -611,7 +616,7 @@ public:
std::forward_list<ClassInfo> Classes;
/// The information on the matchables to match.
std::forward_list<MatchableInfo> Matchables;
std::vector<std::unique_ptr<MatchableInfo>> Matchables;
/// Info for custom matching operands by user defined methods.
std::vector<OperandMatchEntry> OperandMatchInfo;
@ -1279,8 +1284,8 @@ void AsmMatcherInfo::buildOperandMatchInfo() {
// Keep track of all operands of this instructions which belong to the
// same class.
for (unsigned i = 0, e = MI.AsmOperands.size(); i != e; ++i) {
const MatchableInfo::AsmOperand &Op = MI.AsmOperands[i];
for (unsigned i = 0, e = MI->AsmOperands.size(); i != e; ++i) {
const MatchableInfo::AsmOperand &Op = MI->AsmOperands[i];
if (Op.Class->ParserMethod.empty())
continue;
unsigned &OperandMask = OpClassMask[Op.Class];
@ -1291,7 +1296,8 @@ void AsmMatcherInfo::buildOperandMatchInfo() {
for (const auto &OCM : OpClassMask) {
unsigned OpMask = OCM.second;
ClassInfo *CI = OCM.first;
OperandMatchInfo.push_back(OperandMatchEntry::create(&MI, CI, OpMask));
OperandMatchInfo.push_back(OperandMatchEntry::create(MI.get(), CI,
OpMask));
}
}
}
@ -1337,15 +1343,16 @@ void AsmMatcherInfo::buildInfo() {
if (CGI->TheDef->getValueAsBit("isCodeGenOnly"))
continue;
Matchables.emplace_front(*CGI);
MatchableInfo *II = &Matchables.front();
std::unique_ptr<MatchableInfo> II(new MatchableInfo(*CGI));
II->initialize(*this, SingletonRegisters, AsmVariantNo, RegisterPrefix);
// Ignore instructions which shouldn't be matched and diagnose invalid
// instruction definitions with an error.
if (!II->validate(CommentDelimiter, true))
Matchables.pop_front();
continue;
Matchables.push_back(std::move(II));
}
// Parse all of the InstAlias definitions and stick them in the list of
@ -1353,8 +1360,8 @@ void AsmMatcherInfo::buildInfo() {
std::vector<Record*> AllInstAliases =
Records.getAllDerivedDefinitions("InstAlias");
for (unsigned i = 0, e = AllInstAliases.size(); i != e; ++i) {
auto Alias = llvm::make_unique<CodeGenInstAlias>(AllInstAliases[i],
AsmVariantNo, Target);
CodeGenInstAlias *Alias =
new CodeGenInstAlias(AllInstAliases[i], AsmVariantNo, Target);
// If the tblgen -match-prefix option is specified (for tblgen hackers),
// filter the set of instruction aliases we consider, based on the target
@ -1363,13 +1370,14 @@ void AsmMatcherInfo::buildInfo() {
.startswith( MatchPrefix))
continue;
Matchables.emplace_front(std::move(Alias));
MatchableInfo *II = &Matchables.front();
std::unique_ptr<MatchableInfo> II(new MatchableInfo(Alias));
II->initialize(*this, SingletonRegisters, AsmVariantNo, RegisterPrefix);
// Validate the alias definitions.
II->validate(CommentDelimiter, false);
Matchables.push_back(std::move(II));
}
}
@ -1381,17 +1389,17 @@ void AsmMatcherInfo::buildInfo() {
// Build the information about matchables, now that we have fully formed
// classes.
std::forward_list<MatchableInfo> NewMatchables;
std::vector<std::unique_ptr<MatchableInfo>> NewMatchables;
for (auto &II : Matchables) {
// Parse the tokens after the mnemonic.
// Note: buildInstructionOperandReference may insert new AsmOperands, so
// don't precompute the loop bound.
for (unsigned i = 0; i != II.AsmOperands.size(); ++i) {
MatchableInfo::AsmOperand &Op = II.AsmOperands[i];
for (unsigned i = 0; i != II->AsmOperands.size(); ++i) {
MatchableInfo::AsmOperand &Op = II->AsmOperands[i];
StringRef Token = Op.Token;
// Check for singleton registers.
if (Record *RegRecord = II.AsmOperands[i].SingletonReg) {
if (Record *RegRecord = II->AsmOperands[i].SingletonReg) {
Op.Class = RegisterClasses[RegRecord];
assert(Op.Class && Op.Class->Registers.size() == 1 &&
"Unexpected class for singleton register");
@ -1416,30 +1424,35 @@ void AsmMatcherInfo::buildInfo() {
else
OperandName = Token.substr(1);
if (II.DefRec.is<const CodeGenInstruction *>())
buildInstructionOperandReference(&II, OperandName, i);
if (II->DefRec.is<const CodeGenInstruction*>())
buildInstructionOperandReference(II.get(), OperandName, i);
else
buildAliasOperandReference(&II, OperandName, Op);
buildAliasOperandReference(II.get(), OperandName, Op);
}
if (II.DefRec.is<const CodeGenInstruction *>()) {
II.buildInstructionResultOperands();
if (II->DefRec.is<const CodeGenInstruction*>()) {
II->buildInstructionResultOperands();
// If the instruction has a two-operand alias, build up the
// matchable here. We'll add them in bulk at the end to avoid
// confusing this loop.
std::string Constraint =
II.TheDef->getValueAsString("TwoOperandAliasConstraint");
II->TheDef->getValueAsString("TwoOperandAliasConstraint");
if (Constraint != "") {
// Start by making a copy of the original matchable.
NewMatchables.emplace_front(II);
std::unique_ptr<MatchableInfo> AliasII(new MatchableInfo(*II));
// Adjust it to be a two-operand alias.
NewMatchables.front().formTwoOperandAlias(Constraint);
AliasII->formTwoOperandAlias(Constraint);
// Add the alias to the matchables list.
NewMatchables.push_back(std::move(AliasII));
}
} else
II.buildAliasResultOperands();
II->buildAliasResultOperands();
}
Matchables.splice_after(Matchables.before_begin(), NewMatchables);
if (!NewMatchables.empty())
std::move(NewMatchables.begin(), NewMatchables.end(),
std::back_inserter(Matchables));
// Process token alias definitions and set up the associated superclass
// information.
@ -1664,8 +1677,9 @@ static unsigned getConverterOperandID(const std::string &Name,
return ID;
}
static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
std::forward_list<MatchableInfo> &Infos,
std::vector<std::unique_ptr<MatchableInfo>> &Infos,
raw_ostream &OS) {
SetVector<std::string> OperandConversionKinds;
SetVector<std::string> InstructionConversionKinds;
@ -1732,10 +1746,10 @@ static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
for (auto &II : Infos) {
// Check if we have a custom match function.
std::string AsmMatchConverter =
II.getResultInst()->TheDef->getValueAsString("AsmMatchConverter");
II->getResultInst()->TheDef->getValueAsString("AsmMatchConverter");
if (!AsmMatchConverter.empty()) {
std::string Signature = "ConvertCustom_" + AsmMatchConverter;
II.ConversionFnKind = Signature;
II->ConversionFnKind = Signature;
// Check if we have already generated this signature.
if (!InstructionConversionKinds.insert(Signature))
@ -1767,17 +1781,17 @@ static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
std::vector<uint8_t> ConversionRow;
// Compute the convert enum and the case body.
MaxRowLength = std::max(MaxRowLength, II.ResOperands.size() * 2 + 1);
MaxRowLength = std::max(MaxRowLength, II->ResOperands.size()*2 + 1 );
for (unsigned i = 0, e = II.ResOperands.size(); i != e; ++i) {
const MatchableInfo::ResOperand &OpInfo = II.ResOperands[i];
for (unsigned i = 0, e = II->ResOperands.size(); i != e; ++i) {
const MatchableInfo::ResOperand &OpInfo = II->ResOperands[i];
// Generate code to populate each result operand.
switch (OpInfo.Kind) {
case MatchableInfo::ResOperand::RenderAsmOperand: {
// This comes from something we parsed.
const MatchableInfo::AsmOperand &Op =
II.AsmOperands[OpInfo.AsmOperandNum];
II->AsmOperands[OpInfo.AsmOperandNum];
// Registers are always converted the same, don't duplicate the
// conversion function based on them.
@ -1900,7 +1914,7 @@ static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
if (Signature == "Convert")
Signature += "_NoOperands";
II.ConversionFnKind = Signature;
II->ConversionFnKind = Signature;
// Save the signature. If we already have it, don't add a new row
// to the table.
@ -2586,21 +2600,23 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
// Sort the instruction table using the partial order on classes. We use
// stable_sort to ensure that ambiguous instructions are still
// deterministically ordered.
Info.Matchables.sort();
std::stable_sort(Info.Matchables.begin(), Info.Matchables.end(),
[](const std::unique_ptr<MatchableInfo> &a,
const std::unique_ptr<MatchableInfo> &b){
return *a < *b;});
DEBUG_WITH_TYPE("instruction_info", {
for (const auto &MI : Info.Matchables)
MI.dump();
MI->dump();
});
// Check for ambiguous matchables.
DEBUG_WITH_TYPE("ambiguous_instrs", {
unsigned NumAmbiguous = 0;
for (auto I = Info.Matchables.begin(), E = Info.Matchables.end(); I != E;
++I) {
for (auto J = std::next(I); J != E; ++J) {
const MatchableInfo &A = *I;
const MatchableInfo &B = *J;
for (unsigned i = 0, e = Info.Matchables.size(); i != e; ++i) {
for (unsigned j = i + 1; j != e; ++j) {
const MatchableInfo &A = *Info.Matchables[i];
const MatchableInfo &B = *Info.Matchables[j];
if (A.couldMatchAmbiguouslyWith(B)) {
errs() << "warning: ambiguous matchables:\n";
@ -2721,11 +2737,11 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
unsigned MaxMnemonicIndex = 0;
bool HasDeprecation = false;
for (const auto &MI : Info.Matchables) {
MaxNumOperands = std::max(MaxNumOperands, MI.AsmOperands.size());
HasDeprecation |= MI.HasDeprecation;
MaxNumOperands = std::max(MaxNumOperands, MI->AsmOperands.size());
HasDeprecation |= MI->HasDeprecation;
// Store a pascal-style length byte in the mnemonic.
std::string LenMnemonic = char(MI.Mnemonic.size()) + MI.Mnemonic.str();
std::string LenMnemonic = char(MI->Mnemonic.size()) + MI->Mnemonic.str();
MaxMnemonicIndex = std::max(MaxMnemonicIndex,
StringTable.GetOrAddStringOffset(LenMnemonic, false));
}
@ -2749,9 +2765,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " " << getMinimalTypeForRange(MaxMnemonicIndex)
<< " Mnemonic;\n";
OS << " uint16_t Opcode;\n";
OS << " " << getMinimalTypeForRange(std::distance(Info.Matchables.begin(),
Info.Matchables.end()))
<< " ConvertFn;\n";
OS << " " << getMinimalTypeForRange(Info.Matchables.size())
<< " ConvertFn;\n";
OS << " " << getMinimalRequiredFeaturesType(Info)
<< " RequiredFeatures;\n";
OS << " " << getMinimalTypeForRange(
@ -2786,28 +2801,29 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << "static const MatchEntry MatchTable" << VC << "[] = {\n";
for (const auto &MI : Info.Matchables) {
if (MI.AsmVariantID != AsmVariantNo)
if (MI->AsmVariantID != AsmVariantNo)
continue;
// Store a pascal-style length byte in the mnemonic.
std::string LenMnemonic = char(MI.Mnemonic.size()) + MI.Mnemonic.str();
std::string LenMnemonic = char(MI->Mnemonic.size()) + MI->Mnemonic.str();
OS << " { " << StringTable.GetOrAddStringOffset(LenMnemonic, false)
<< " /* " << MI.Mnemonic << " */, " << Target.getName()
<< "::" << MI.getResultInst()->TheDef->getName() << ", "
<< MI.ConversionFnKind << ", ";
<< " /* " << MI->Mnemonic << " */, "
<< Target.getName() << "::"
<< MI->getResultInst()->TheDef->getName() << ", "
<< MI->ConversionFnKind << ", ";
// Write the required features mask.
if (!MI.RequiredFeatures.empty()) {
for (unsigned i = 0, e = MI.RequiredFeatures.size(); i != e; ++i) {
if (!MI->RequiredFeatures.empty()) {
for (unsigned i = 0, e = MI->RequiredFeatures.size(); i != e; ++i) {
if (i) OS << "|";
OS << MI.RequiredFeatures[i]->getEnumName();
OS << MI->RequiredFeatures[i]->getEnumName();
}
} else
OS << "0";
OS << ", { ";
for (unsigned i = 0, e = MI.AsmOperands.size(); i != e; ++i) {
const MatchableInfo::AsmOperand &Op = MI.AsmOperands[i];
for (unsigned i = 0, e = MI->AsmOperands.size(); i != e; ++i) {
const MatchableInfo::AsmOperand &Op = MI->AsmOperands[i];
if (i) OS << ", ";
OS << Op.Class->Name;