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-rw-r--r--utils/TableGen/AsmMatcherEmitter.cpp69
1 files changed, 43 insertions, 26 deletions
diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 4169f8d..3d72741 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -117,6 +117,8 @@
#include <sstream>
using namespace llvm;
+#define DEBUG_TYPE "asm-matcher-emitter"
+
static cl::opt<std::string>
MatchPrefix("match-prefix", cl::init(""),
cl::desc("Only match instructions with the given prefix"));
@@ -191,10 +193,10 @@ struct ClassInfo {
/// parsing on the operand.
std::string ParserMethod;
- /// For register classes, the records for all the registers in this class.
+ /// For register classes: the records for all the registers in this class.
RegisterSet Registers;
- /// For custom match classes, he diagnostic kind for when the predicate fails.
+ /// For custom match classes: the diagnostic kind for when the predicate fails.
std::string DiagnosticType;
public:
/// isRegisterClass() - Check if this is a register class.
@@ -306,8 +308,8 @@ struct MatchableInfo {
/// Register record if this token is singleton register.
Record *SingletonReg;
- explicit AsmOperand(StringRef T) : Token(T), Class(0), SubOpIdx(-1),
- SingletonReg(0) {}
+ explicit AsmOperand(StringRef T) : Token(T), Class(nullptr), SubOpIdx(-1),
+ SingletonReg(nullptr) {}
};
/// ResOperand - This represents a single operand in the result instruction
@@ -571,6 +573,11 @@ struct SubtargetFeatureInfo {
std::string getEnumName() const {
return "Feature_" + TheDef->getName();
}
+
+ void dump() {
+ errs() << getEnumName() << " " << Index << "\n";
+ TheDef->dump();
+ }
};
struct OperandMatchEntry {
@@ -666,7 +673,7 @@ public:
assert(Def->isSubClassOf("Predicate") && "Invalid predicate type!");
std::map<Record*, SubtargetFeatureInfo*, LessRecordByID>::const_iterator I =
SubtargetFeatures.find(Def);
- return I == SubtargetFeatures.end() ? 0 : I->second;
+ return I == SubtargetFeatures.end() ? nullptr : I->second;
}
RecordKeeper &getRecords() const {
@@ -1018,7 +1025,7 @@ AsmMatcherInfo::getOperandClass(Record *Rec, int SubOpIdx) {
// RegisterOperand may have an associated ParserMatchClass. If it does,
// use it, else just fall back to the underlying register class.
const RecordVal *R = Rec->getValue("ParserMatchClass");
- if (R == 0 || R->getValue() == 0)
+ if (!R || !R->getValue())
PrintFatalError("Record `" + Rec->getName() +
"' does not have a ParserMatchClass!\n");
@@ -1322,6 +1329,7 @@ void AsmMatcherInfo::buildInfo() {
unsigned FeatureNo = SubtargetFeatures.size();
SubtargetFeatures[Pred] = new SubtargetFeatureInfo(Pred, FeatureNo);
+ DEBUG(SubtargetFeatures[Pred]->dump());
assert(FeatureNo < 32 && "Too many subtarget features!");
}
@@ -1373,7 +1381,8 @@ void AsmMatcherInfo::buildInfo() {
std::vector<Record*> AllInstAliases =
Records.getAllDerivedDefinitions("InstAlias");
for (unsigned i = 0, e = AllInstAliases.size(); i != e; ++i) {
- CodeGenInstAlias *Alias = new CodeGenInstAlias(AllInstAliases[i], 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
@@ -1897,7 +1906,7 @@ static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
}
case MatchableInfo::ResOperand::RegOperand: {
std::string Reg, Name;
- if (OpInfo.Register == 0) {
+ if (!OpInfo.Register) {
Name = "reg0";
Reg = "0";
} else {
@@ -2196,18 +2205,35 @@ static void emitMatchRegisterName(CodeGenTarget &Target, Record *AsmParser,
OS << "}\n\n";
}
+static const char *getMinimalTypeForRange(uint64_t Range) {
+ assert(Range <= 0xFFFFFFFFULL && "Enum too large");
+ if (Range > 0xFFFF)
+ return "uint32_t";
+ if (Range > 0xFF)
+ return "uint16_t";
+ return "uint8_t";
+}
+
+static const char *getMinimalRequiredFeaturesType(const AsmMatcherInfo &Info) {
+ uint64_t MaxIndex = Info.SubtargetFeatures.size();
+ if (MaxIndex > 0)
+ MaxIndex--;
+ return getMinimalTypeForRange(1ULL << MaxIndex);
+}
+
/// emitSubtargetFeatureFlagEnumeration - Emit the subtarget feature flag
/// definitions.
static void emitSubtargetFeatureFlagEnumeration(AsmMatcherInfo &Info,
raw_ostream &OS) {
OS << "// Flags for subtarget features that participate in "
<< "instruction matching.\n";
- OS << "enum SubtargetFeatureFlag {\n";
+ OS << "enum SubtargetFeatureFlag : " << getMinimalRequiredFeaturesType(Info)
+ << " {\n";
for (std::map<Record*, SubtargetFeatureInfo*, LessRecordByID>::const_iterator
it = Info.SubtargetFeatures.begin(),
ie = Info.SubtargetFeatures.end(); it != ie; ++it) {
SubtargetFeatureInfo &SFI = *it->second;
- OS << " " << SFI.getEnumName() << " = (1 << " << SFI.Index << "),\n";
+ OS << " " << SFI.getEnumName() << " = (1U << " << SFI.Index << "),\n";
}
OS << " Feature_None = 0\n";
OS << "};\n\n";
@@ -2319,7 +2345,7 @@ static std::string GetAliasRequiredFeatures(Record *R,
for (unsigned i = 0, e = ReqFeatures.size(); i != e; ++i) {
SubtargetFeatureInfo *F = Info.getSubtargetFeature(ReqFeatures[i]);
- if (F == 0)
+ if (!F)
PrintFatalError(R->getLoc(), "Predicate '" + ReqFeatures[i]->getName() +
"' is not marked as an AssemblerPredicate!");
@@ -2443,15 +2469,6 @@ static bool emitMnemonicAliases(raw_ostream &OS, const AsmMatcherInfo &Info,
return true;
}
-static const char *getMinimalTypeForRange(uint64_t Range) {
- assert(Range < 0xFFFFFFFFULL && "Enum too large");
- if (Range > 0xFFFF)
- return "uint32_t";
- if (Range > 0xFF)
- return "uint16_t";
- return "uint8_t";
-}
-
static void emitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
const AsmMatcherInfo &Info, StringRef ClassName,
StringToOffsetTable &StringTable,
@@ -2466,7 +2483,7 @@ static void emitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
// Emit the static custom operand parsing table;
OS << "namespace {\n";
OS << " struct OperandMatchEntry {\n";
- OS << " " << getMinimalTypeForRange(1ULL << Info.SubtargetFeatures.size())
+ OS << " " << getMinimalRequiredFeaturesType(Info)
<< " RequiredFeatures;\n";
OS << " " << getMinimalTypeForRange(MaxMnemonicIndex)
<< " Mnemonic;\n";
@@ -2802,7 +2819,7 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
OS << " uint16_t Opcode;\n";
OS << " " << getMinimalTypeForRange(Info.Matchables.size())
<< " ConvertFn;\n";
- OS << " " << getMinimalTypeForRange(1ULL << Info.SubtargetFeatures.size())
+ OS << " " << getMinimalRequiredFeaturesType(Info)
<< " RequiredFeatures;\n";
OS << " " << getMinimalTypeForRange(Info.Classes.size())
<< " Classes[" << MaxNumOperands << "];\n";
@@ -2881,8 +2898,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
for (unsigned VC = 0; VC != VariantCount; ++VC) {
Record *AsmVariant = Target.getAsmParserVariant(VC);
int AsmVariantNo = AsmVariant->getValueAsInt("Variant");
- OS << " case " << AsmVariantNo << ": Start = MatchTable" << VC
- << "; End = array_endof(MatchTable" << VC << "); break;\n";
+ OS << " case " << AsmVariantNo << ": Start = std::begin(MatchTable" << VC
+ << "); End = std::end(MatchTable" << VC << "); break;\n";
}
OS << " }\n";
OS << " // Search the table.\n";
@@ -2936,8 +2953,8 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
for (unsigned VC = 0; VC != VariantCount; ++VC) {
Record *AsmVariant = Target.getAsmParserVariant(VC);
int AsmVariantNo = AsmVariant->getValueAsInt("Variant");
- OS << " case " << AsmVariantNo << ": Start = MatchTable" << VC
- << "; End = array_endof(MatchTable" << VC << "); break;\n";
+ OS << " case " << AsmVariantNo << ": Start = std::begin(MatchTable" << VC
+ << "); End = std::end(MatchTable" << VC << "); break;\n";
}
OS << " }\n";
OS << " // Search the table.\n";
generated by cgit v1.1 at 2025-08-15 18:32:15 +0000