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TableGen: Keep track of superclass reference ranges. 

def foo : bar;
          ~~~

This allows us to produce more precise diagnostics about a certain
superclass, and even provide fixits.

llvm-svn: 172085
This commit is contained in:
Jordan Rose 2013-01-10 18:50:11 +00:00
parent abdd99b5aa
commit f12e8a93ee
4 changed files with 57 additions and 40 deletions
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11
llvm/include/llvm/TableGen/Record.h
View File

@ -1387,7 +1387,8 @@ class Record {
SmallVector<SMLoc, 4> Locs;
std::vector<Init *> TemplateArgs;
std::vector<RecordVal> Values;
std::vector<Record*> SuperClasses;
std::vector<Record *> SuperClasses;
std::vector<SMRange> SuperClassRanges;
// Tracks Record instances. Not owned by Record.
RecordKeeper &TrackedRecords;
@ -1419,8 +1420,8 @@ public:
Record(const Record &O) :
ID(LastID++), Name(O.Name), Locs(O.Locs), TemplateArgs(O.TemplateArgs),
Values(O.Values), SuperClasses(O.SuperClasses),
TrackedRecords(O.TrackedRecords), TheInit(O.TheInit),
IsAnonymous(O.IsAnonymous) { }
SuperClassRanges(O.SuperClassRanges), TrackedRecords(O.TrackedRecords),
TheInit(O.TheInit), IsAnonymous(O.IsAnonymous) { }
~Record() {}
@ -1451,6 +1452,7 @@ public:
}
const std::vector<RecordVal> &getValues() const { return Values; }
const std::vector<Record*> &getSuperClasses() const { return SuperClasses; }
ArrayRef<SMRange> getSuperClassRanges() const { return SuperClassRanges; }
bool isTemplateArg(Init *Name) const {
for (unsigned i = 0, e = TemplateArgs.size(); i != e; ++i)
@ -1525,9 +1527,10 @@ public:
return false;
}
void addSuperClass(Record *R) {
void addSuperClass(Record *R, SMRange Range) {
assert(!isSubClassOf(R) && "Already subclassing record!");
SuperClasses.push_back(R);
SuperClassRanges.push_back(Range);
}
/// resolveReferences - If there are any field references that refer to fields

78
llvm/lib/TableGen/TGParser.cpp
View File

@ -26,7 +26,7 @@ using namespace llvm;
namespace llvm {
struct SubClassReference {
SMLoc RefLoc;
SMRange RefRange;
Record *Rec;
std::vector<Init*> TemplateArgs;
SubClassReference() : Rec(0) {}
@ -35,7 +35,7 @@ struct SubClassReference {
};
struct SubMultiClassReference {
SMLoc RefLoc;
SMRange RefRange;
MultiClass *MC;
std::vector<Init*> TemplateArgs;
SubMultiClassReference() : MC(0) {}
@ -150,22 +150,23 @@ bool TGParser::AddSubClass(Record *CurRec, SubClassReference &SubClass) {
// Add all of the values in the subclass into the current class.
const std::vector<RecordVal> &Vals = SC->getValues();
for (unsigned i = 0, e = Vals.size(); i != e; ++i)
if (AddValue(CurRec, SubClass.RefLoc, Vals[i]))
if (AddValue(CurRec, SubClass.RefRange.Start, Vals[i]))
return true;
const std::vector<Init *> &TArgs = SC->getTemplateArgs();
// Ensure that an appropriate number of template arguments are specified.
if (TArgs.size() < SubClass.TemplateArgs.size())
return Error(SubClass.RefLoc, "More template args specified than expected");
return Error(SubClass.RefRange.Start,
"More template args specified than expected");
// Loop over all of the template arguments, setting them to the specified
// value or leaving them as the default if necessary.
for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
if (i < SubClass.TemplateArgs.size()) {
// If a value is specified for this template arg, set it now.
if (SetValue(CurRec, SubClass.RefLoc, TArgs[i], std::vector<unsigned>(),
SubClass.TemplateArgs[i]))
if (SetValue(CurRec, SubClass.RefRange.Start, TArgs[i],
std::vector<unsigned>(), SubClass.TemplateArgs[i]))
return true;
// Resolve it next.
@ -175,7 +176,8 @@ bool TGParser::AddSubClass(Record *CurRec, SubClassReference &SubClass) {
CurRec->removeValue(TArgs[i]);
} else if (!CurRec->getValue(TArgs[i])->getValue()->isComplete()) {
return Error(SubClass.RefLoc,"Value not specified for template argument #"
return Error(SubClass.RefRange.Start,
"Value not specified for template argument #"
+ utostr(i) + " (" + TArgs[i]->getAsUnquotedString()
+ ") of subclass '" + SC->getNameInitAsString() + "'!");
}
@ -184,17 +186,18 @@ bool TGParser::AddSubClass(Record *CurRec, SubClassReference &SubClass) {
// Since everything went well, we can now set the "superclass" list for the
// current record.
const std::vector<Record*> &SCs = SC->getSuperClasses();
ArrayRef<SMRange> SCRanges = SC->getSuperClassRanges();
for (unsigned i = 0, e = SCs.size(); i != e; ++i) {
if (CurRec->isSubClassOf(SCs[i]))
return Error(SubClass.RefLoc,
return Error(SubClass.RefRange.Start,
"Already subclass of '" + SCs[i]->getName() + "'!\n");
CurRec->addSuperClass(SCs[i]);
CurRec->addSuperClass(SCs[i], SCRanges[i]);
}
if (CurRec->isSubClassOf(SC))
return Error(SubClass.RefLoc,
return Error(SubClass.RefRange.Start,
"Already subclass of '" + SC->getName() + "'!\n");
CurRec->addSuperClass(SC);
CurRec->addSuperClass(SC, SubClass.RefRange);
return false;
}
@ -211,7 +214,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
// Add all of the values in the subclass into the current class.
const std::vector<RecordVal> &SMCVals = SMC->Rec.getValues();
for (unsigned i = 0, e = SMCVals.size(); i != e; ++i)
if (AddValue(CurRec, SubMultiClass.RefLoc, SMCVals[i]))
if (AddValue(CurRec, SubMultiClass.RefRange.Start, SMCVals[i]))
return true;
int newDefStart = CurMC->DefPrototypes.size();
@ -226,7 +229,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
// Add all of the values in the superclass into the current def.
for (unsigned i = 0, e = MCVals.size(); i != e; ++i)
if (AddValue(NewDef, SubMultiClass.RefLoc, MCVals[i]))
if (AddValue(NewDef, SubMultiClass.RefRange.Start, MCVals[i]))
return true;
CurMC->DefPrototypes.push_back(NewDef);
@ -237,7 +240,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
// Ensure that an appropriate number of template arguments are
// specified.
if (SMCTArgs.size() < SubMultiClass.TemplateArgs.size())
return Error(SubMultiClass.RefLoc,
return Error(SubMultiClass.RefRange.Start,
"More template args specified than expected");
// Loop over all of the template arguments, setting them to the specified
@ -246,7 +249,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
if (i < SubMultiClass.TemplateArgs.size()) {
// If a value is specified for this template arg, set it in the
// superclass now.
if (SetValue(CurRec, SubMultiClass.RefLoc, SMCTArgs[i],
if (SetValue(CurRec, SubMultiClass.RefRange.Start, SMCTArgs[i],
std::vector<unsigned>(),
SubMultiClass.TemplateArgs[i]))
return true;
@ -266,7 +269,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
++j) {
Record *Def = *j;
if (SetValue(Def, SubMultiClass.RefLoc, SMCTArgs[i],
if (SetValue(Def, SubMultiClass.RefRange.Start, SMCTArgs[i],
std::vector<unsigned>(),
SubMultiClass.TemplateArgs[i]))
return true;
@ -278,7 +281,7 @@ bool TGParser::AddSubMultiClass(MultiClass *CurMC,
Def->removeValue(SMCTArgs[i]);
}
} else if (!CurRec->getValue(SMCTArgs[i])->getValue()->isComplete()) {
return Error(SubMultiClass.RefLoc,
return Error(SubMultiClass.RefRange.Start,
"Value not specified for template argument #"
+ utostr(i) + " (" + SMCTArgs[i]->getAsUnquotedString()
+ ") of subclass '" + SMC->Rec.getNameInitAsString() + "'!");
@ -464,7 +467,7 @@ MultiClass *TGParser::ParseMultiClassID() {
SubClassReference TGParser::
ParseSubClassReference(Record *CurRec, bool isDefm) {
SubClassReference Result;
Result.RefLoc = Lex.getLoc();
Result.RefRange.Start = Lex.getLoc();
if (isDefm) {
if (MultiClass *MC = ParseMultiClassID())
@ -475,8 +478,10 @@ ParseSubClassReference(Record *CurRec, bool isDefm) {
if (Result.Rec == 0) return Result;
// If there is no template arg list, we're done.
if (Lex.getCode() != tgtok::less)
if (Lex.getCode() != tgtok::less) {
Result.RefRange.End = Lex.getLoc();
return Result;
}
Lex.Lex(); // Eat the '<'
if (Lex.getCode() == tgtok::greater) {
@ -497,6 +502,7 @@ ParseSubClassReference(Record *CurRec, bool isDefm) {
return Result;
}
Lex.Lex();
Result.RefRange.End = Lex.getLoc();
return Result;
}
@ -511,14 +517,16 @@ ParseSubClassReference(Record *CurRec, bool isDefm) {
SubMultiClassReference TGParser::
ParseSubMultiClassReference(MultiClass *CurMC) {
SubMultiClassReference Result;
Result.RefLoc = Lex.getLoc();
Result.RefRange.Start = Lex.getLoc();
Result.MC = ParseMultiClassID();
if (Result.MC == 0) return Result;
// If there is no template arg list, we're done.
if (Lex.getCode() != tgtok::less)
if (Lex.getCode() != tgtok::less) {
Result.RefRange.End = Lex.getLoc();
return Result;
}
Lex.Lex(); // Eat the '<'
if (Lex.getCode() == tgtok::greater) {
@ -539,6 +547,7 @@ ParseSubMultiClassReference(MultiClass *CurMC) {
return Result;
}
Lex.Lex();
Result.RefRange.End = Lex.getLoc();
return Result;
}
@ -1199,6 +1208,7 @@ Init *TGParser::ParseSimpleValue(Record *CurRec, RecTy *ItemType,
return 0;
}
Lex.Lex(); // eat the '>'
SMLoc EndLoc = Lex.getLoc();
// Create the new record, set it as CurRec temporarily.
static unsigned AnonCounter = 0;
@ -1207,7 +1217,7 @@ Init *TGParser::ParseSimpleValue(Record *CurRec, RecTy *ItemType,
Records,
/*IsAnonymous=*/true);
SubClassReference SCRef;
SCRef.RefLoc = NameLoc;
SCRef.RefRange = SMRange(NameLoc, EndLoc);
SCRef.Rec = Class;
SCRef.TemplateArgs = ValueList;
// Add info about the subclass to NewRec.
@ -2246,7 +2256,7 @@ Record *TGParser::
InstantiateMulticlassDef(MultiClass &MC,
Record *DefProto,
Init *DefmPrefix,
SMLoc DefmPrefixLoc) {
SMRange DefmPrefixRange) {
// We need to preserve DefProto so it can be reused for later
// instantiations, so create a new Record to inherit from it.
@ -2276,21 +2286,21 @@ InstantiateMulticlassDef(MultiClass &MC,
}
// Make a trail of SMLocs from the multiclass instantiations.
SmallVector<SMLoc, 4> Locs(1, DefmPrefixLoc);
SmallVector<SMLoc, 4> Locs(1, DefmPrefixRange.Start);
Locs.append(DefProto->getLoc().begin(), DefProto->getLoc().end());
Record *CurRec = new Record(DefName, Locs, Records, IsAnonymous);
SubClassReference Ref;
Ref.RefLoc = DefmPrefixLoc;
Ref.RefRange = DefmPrefixRange;
Ref.Rec = DefProto;
AddSubClass(CurRec, Ref);
// Set the value for NAME. We don't resolve references to it 'til later,
// though, so that uses in nested multiclass names don't get
// confused.
if (SetValue(CurRec, Ref.RefLoc, "NAME", std::vector<unsigned>(),
if (SetValue(CurRec, Ref.RefRange.Start, "NAME", std::vector<unsigned>(),
DefmPrefix)) {
Error(DefmPrefixLoc, "Could not resolve "
Error(DefmPrefixRange.Start, "Could not resolve "
+ CurRec->getNameInitAsString() + ":NAME to '"
+ DefmPrefix->getAsUnquotedString() + "'");
return 0;
@ -2321,7 +2331,7 @@ InstantiateMulticlassDef(MultiClass &MC,
// Ensure redefinition doesn't happen.
if (Records.getDef(CurRec->getNameInitAsString())) {
Error(DefmPrefixLoc, "def '" + CurRec->getNameInitAsString() +
Error(DefmPrefixRange.Start, "def '" + CurRec->getNameInitAsString() +
"' already defined, instantiating defm with subdef '" +
DefProto->getNameInitAsString() + "'");
return 0;
@ -2407,14 +2417,14 @@ bool TGParser::ResolveMulticlassDef(MultiClass &MC,
///
bool TGParser::ParseDefm(MultiClass *CurMultiClass) {
assert(Lex.getCode() == tgtok::Defm && "Unexpected token!");
SMLoc DefmLoc = Lex.getLoc();
Init *DefmPrefix = 0;
if (Lex.Lex() == tgtok::Id) { // eat the defm.
DefmPrefix = ParseObjectName(CurMultiClass);
}
SMLoc DefmPrefixLoc = Lex.getLoc();
SMLoc DefmPrefixEndLoc = Lex.getLoc();
if (Lex.getCode() != tgtok::colon)
return TokError("expected ':' after defm identifier");
@ -2450,15 +2460,17 @@ bool TGParser::ParseDefm(MultiClass *CurMultiClass) {
for (unsigned i = 0, e = MC->DefPrototypes.size(); i != e; ++i) {
Record *DefProto = MC->DefPrototypes[i];
Record *CurRec = InstantiateMulticlassDef(*MC, DefProto, DefmPrefix, DefmPrefixLoc);
Record *CurRec = InstantiateMulticlassDef(*MC, DefProto, DefmPrefix,
SMRange(DefmLoc,
DefmPrefixEndLoc));
if (!CurRec)
return true;
if (ResolveMulticlassDefArgs(*MC, CurRec, DefmPrefixLoc, SubClassLoc,
if (ResolveMulticlassDefArgs(*MC, CurRec, DefmLoc, SubClassLoc,
TArgs, TemplateVals, true/*Delete args*/))
return Error(SubClassLoc, "could not instantiate def");
if (ResolveMulticlassDef(*MC, CurRec, DefProto, DefmPrefixLoc))
if (ResolveMulticlassDef(*MC, CurRec, DefProto, DefmLoc))
return Error(SubClassLoc, "could not instantiate def");
NewRecDefs.push_back(CurRec);

2
llvm/lib/TableGen/TGParser.h
View File

@ -134,7 +134,7 @@ private: // Parser methods.
Record *InstantiateMulticlassDef(MultiClass &MC,
Record *DefProto,
Init *DefmPrefix,
SMLoc DefmPrefixLoc);
SMRange DefmPrefixRange);
bool ResolveMulticlassDefArgs(MultiClass &MC,
Record *DefProto,
SMLoc DefmPrefixLoc,

6
llvm/utils/TableGen/CodeGenRegisters.cpp
View File

@ -636,8 +636,10 @@ struct TupleExpander : SetTheory::Expander {
Elts.insert(NewReg);
// Copy Proto super-classes.
for (unsigned i = 0, e = Proto->getSuperClasses().size(); i != e; ++i)
NewReg->addSuperClass(Proto->getSuperClasses()[i]);
ArrayRef<Record *> Supers = Proto->getSuperClasses();
ArrayRef<SMRange> Ranges = Proto->getSuperClassRanges();
for (unsigned i = 0, e = Supers.size(); i != e; ++i)
NewReg->addSuperClass(Supers[i], Ranges[i]);
// Copy Proto fields.
for (unsigned i = 0, e = Proto->getValues().size(); i != e; ++i) {