//
//===----------------------------------------------------------------------===//
-#include "FastISelEmitter.h"
-#include "Error.h"
-#include "Record.h"
+#include "CodeGenDAGPatterns.h"
#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/VectorExtras.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
using namespace llvm;
-namespace {
/// InstructionMemo - This class holds additional information about an
/// instruction needed to emit code for it.
///
+namespace {
struct InstructionMemo {
std::string Name;
const CodeGenRegisterClass *RC;
std::string SubRegNo;
std::vector<std::string>* PhysRegs;
};
-
+} // End anonymous namespace
+
/// ImmPredicateSet - This uniques predicates (represented as a string) and
/// gives them unique (small) integer ID's that start at 0.
+namespace {
class ImmPredicateSet {
DenseMap<TreePattern *, unsigned> ImmIDs;
std::vector<TreePredicateFn> PredsByName;
public:
-
+
unsigned getIDFor(TreePredicateFn Pred) {
unsigned &Entry = ImmIDs[Pred.getOrigPatFragRecord()];
if (Entry == 0) {
}
return Entry-1;
}
-
+
const TreePredicateFn &getPredicate(unsigned i) {
assert(i < PredsByName.size());
return PredsByName[i];
}
-
+
typedef std::vector<TreePredicateFn>::const_iterator iterator;
iterator begin() const { return PredsByName.begin(); }
iterator end() const { return PredsByName.end(); }
-
+
};
+} // End anonymous namespace
/// OperandsSignature - This class holds a description of a list of operand
/// types. It has utility methods for emitting text based on the operands.
///
+namespace {
struct OperandsSignature {
class OpKind {
enum { OK_Reg, OK_FP, OK_Imm, OK_Invalid = -1 };
char Repr;
public:
-
+
OpKind() : Repr(OK_Invalid) {}
-
+
bool operator<(OpKind RHS) const { return Repr < RHS.Repr; }
bool operator==(OpKind RHS) const { return Repr == RHS.Repr; }
"Too many integer predicates for the 'Repr' char");
OpKind K; K.Repr = OK_Imm+V; return K;
}
-
+
bool isReg() const { return Repr == OK_Reg; }
bool isFP() const { return Repr == OK_FP; }
bool isImm() const { return Repr >= OK_Imm; }
-
+
unsigned getImmCode() const { assert(isImm()); return Repr-OK_Imm; }
-
+
void printManglingSuffix(raw_ostream &OS, ImmPredicateSet &ImmPredicates,
bool StripImmCodes) const {
if (isReg())
}
}
};
-
-
+
+
SmallVector<OpKind, 3> Operands;
bool operator<(const OperandsSignature &O) const {
return true;
return false;
}
-
+
/// getWithoutImmCodes - Return a copy of this with any immediate codes forced
/// to zero.
OperandsSignature getWithoutImmCodes() const {
Result.Operands.push_back(OpKind::getImm(0));
return Result;
}
-
+
void emitImmediatePredicate(raw_ostream &OS, ImmPredicateSet &ImmPredicates) {
bool EmittedAnything = false;
for (unsigned i = 0, e = Operands.size(); i != e; ++i) {
if (!Operands[i].isImm()) continue;
-
+
unsigned Code = Operands[i].getImmCode();
if (Code == 0) continue;
-
+
if (EmittedAnything)
OS << " &&\n ";
-
+
TreePredicateFn PredFn = ImmPredicates.getPredicate(Code-1);
-
+
// Emit the type check.
OS << "VT == "
<< getEnumName(PredFn.getOrigPatFragRecord()->getTree(0)->getType(0))
<< " && ";
-
-
+
+
OS << PredFn.getFnName() << "(imm" << i <<')';
EmittedAnything = true;
}
}
-
+
/// initialize - Examine the given pattern and initialize the contents
/// of the Operands array accordingly. Return true if all the operands
/// are supported, false otherwise.
///
bool initialize(TreePatternNode *InstPatNode, const CodeGenTarget &Target,
MVT::SimpleValueType VT,
- ImmPredicateSet &ImmediatePredicates) {
+ ImmPredicateSet &ImmediatePredicates,
+ const CodeGenRegisterClass *OrigDstRC) {
if (InstPatNode->isLeaf())
return false;
-
+
if (InstPatNode->getOperator()->getName() == "imm") {
Operands.push_back(OpKind::getImm(0));
return true;
}
-
+
if (InstPatNode->getOperator()->getName() == "fpimm") {
Operands.push_back(OpKind::getFP());
return true;
}
- const CodeGenRegisterClass *DstRC = 0;
+ const CodeGenRegisterClass *DstRC = nullptr;
for (unsigned i = 0, e = InstPatNode->getNumChildren(); i != e; ++i) {
TreePatternNode *Op = InstPatNode->getChild(i);
Record *Rec = PredFn.getOrigPatFragRecord()->getRecord();
if (Rec->getValueAsBit("FastIselShouldIgnore"))
return false;
-
+
PredNo = ImmediatePredicates.getIDFor(PredFn)+1;
}
-
+
// Handle unmatched immediate sizes here.
//if (Op->getType(0) != VT)
// return false;
-
+
Operands.push_back(OpKind::getImm(PredNo));
continue;
}
-
+
// For now, filter out any operand with a predicate.
// For now, filter out any operand with multiple values.
if (!Op->getPredicateFns().empty() || Op->getNumTypes() != 1)
// For now, ignore other non-leaf nodes.
return false;
}
-
+
assert(Op->hasTypeSet(0) && "Type infererence not done?");
// For now, all the operands must have the same type (if they aren't
if (Op->getType(0) != VT)
return false;
- DefInit *OpDI = dynamic_cast<DefInit*>(Op->getLeafValue());
+ DefInit *OpDI = dyn_cast<DefInit>(Op->getLeafValue());
if (!OpDI)
return false;
Record *OpLeafRec = OpDI->getDef();
-
+
// For now, the only other thing we accept is register operands.
- const CodeGenRegisterClass *RC = 0;
+ const CodeGenRegisterClass *RC = nullptr;
if (OpLeafRec->isSubClassOf("RegisterOperand"))
OpLeafRec = OpLeafRec->getValueAsDef("RegClass");
if (OpLeafRec->isSubClassOf("RegisterClass"))
RC = &Target.getRegisterClass(OpLeafRec);
else if (OpLeafRec->isSubClassOf("Register"))
RC = Target.getRegBank().getRegClassForRegister(OpLeafRec);
- else
+ else if (OpLeafRec->isSubClassOf("ValueType")) {
+ RC = OrigDstRC;
+ } else
return false;
// For now, this needs to be a register class of some sort.
} else if (Operands[i].isImm()) {
OS << "uint64_t imm" << i;
} else if (Operands[i].isFP()) {
- OS << "ConstantFP *f" << i;
+ OS << "const ConstantFP *f" << i;
} else {
llvm_unreachable("Unknown operand kind!");
}
Operands[i].printManglingSuffix(OS, ImmPredicates, StripImmCodes);
}
};
+} // End anonymous namespace
+namespace {
class FastISelMap {
typedef std::map<std::string, InstructionMemo> PredMap;
typedef std::map<MVT::SimpleValueType, PredMap> RetPredMap;
std::map<OperandsSignature, std::vector<OperandsSignature> >
SignaturesWithConstantForms;
-
+
std::string InstNS;
ImmPredicateSet ImmediatePredicates;
public:
void printImmediatePredicates(raw_ostream &OS);
void printFunctionDefinitions(raw_ostream &OS);
};
-
-}
+} // End anonymous namespace
static std::string getOpcodeName(Record *Op, CodeGenDAGPatterns &CGP) {
return CGP.getSDNodeInfo(Op).getEnumName();
if (!Op->isLeaf())
return PhysReg;
- DefInit *OpDI = dynamic_cast<DefInit*>(Op->getLeafValue());
- Record *OpLeafRec = OpDI->getDef();
+ Record *OpLeafRec = cast<DefInit>(Op->getLeafValue())->getDef();
if (!OpLeafRec->isSubClassOf("Register"))
return PhysReg;
- PhysReg += static_cast<StringInit*>(OpLeafRec->getValue( \
- "Namespace")->getValue())->getValue();
+ PhysReg += cast<StringInit>(OpLeafRec->getValue("Namespace")->getValue())
+ ->getValue();
PhysReg += "::";
PhysReg += Target.getRegBank().getReg(OpLeafRec)->getName();
return PhysReg;
// For now, ignore instructions where the first operand is not an
// output register.
- const CodeGenRegisterClass *DstRC = 0;
+ const CodeGenRegisterClass *DstRC = nullptr;
std::string SubRegNo;
if (Op->getName() != "EXTRACT_SUBREG") {
Record *Op0Rec = II.Operands[0].Rec;
// a bit too complicated for now.
if (!Dst->getChild(1)->isLeaf()) continue;
- DefInit *SR = dynamic_cast<DefInit*>(Dst->getChild(1)->getLeafValue());
+ DefInit *SR = dyn_cast<DefInit>(Dst->getChild(1)->getLeafValue());
if (SR)
SubRegNo = getQualifiedName(SR->getDef());
else
// Check all the operands.
OperandsSignature Operands;
- if (!Operands.initialize(InstPatNode, Target, VT, ImmediatePredicates))
+ if (!Operands.initialize(InstPatNode, Target, VT, ImmediatePredicates,
+ DstRC))
continue;
std::vector<std::string>* PhysRegInputs = new std::vector<std::string>();
if (InstPatNode->getOperator()->getName() == "imm" ||
- InstPatNode->getOperator()->getName() == "fpimmm")
+ InstPatNode->getOperator()->getName() == "fpimm")
PhysRegInputs->push_back("");
else {
// Compute the PhysRegs used by the given pattern, and check that
SubRegNo,
PhysRegInputs
};
-
+
if (SimplePatterns[Operands][OpcodeName][VT][RetVT].count(PredicateCheck))
- throw TGError(Pattern.getSrcRecord()->getLoc(),
+ PrintFatalError(Pattern.getSrcRecord()->getLoc(),
"Duplicate record in FastISel table!");
SimplePatterns[Operands][OpcodeName][VT][RetVT][PredicateCheck] = Memo;
-
+
// If any of the operands were immediates with predicates on them, strip
// them down to a signature that doesn't have predicates so that we can
// associate them with the stripped predicate version.
void FastISelMap::printImmediatePredicates(raw_ostream &OS) {
if (ImmediatePredicates.begin() == ImmediatePredicates.end())
return;
-
+
OS << "\n// FastEmit Immediate Predicate functions.\n";
for (ImmPredicateSet::iterator I = ImmediatePredicates.begin(),
E = ImmediatePredicates.end(); I != E; ++I) {
OS << "static bool " << I->getFnName() << "(int64_t Imm) {\n";
OS << I->getImmediatePredicateCode() << "\n}\n";
}
-
+
OS << "\n\n";
}
for (unsigned i = 0; i < Memo.PhysRegs->size(); ++i) {
if ((*Memo.PhysRegs)[i] != "")
- OS << " BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, "
+ OS << " BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, "
<< "TII.get(TargetOpcode::COPY), "
<< (*Memo.PhysRegs)[i] << ").addReg(Op" << i << ");\n";
}
Operands.PrintManglingSuffix(OS, *Memo.PhysRegs,
ImmediatePredicates, true);
OS << "(" << InstNS << Memo.Name << ", ";
- OS << InstNS << Memo.RC->getName() << "RegisterClass";
+ OS << "&" << InstNS << Memo.RC->getName() << "RegClass";
if (!Operands.empty())
OS << ", ";
Operands.PrintArguments(OS, *Memo.PhysRegs);
for (unsigned i = 0; i < Memo.PhysRegs->size(); ++i) {
if ((*Memo.PhysRegs)[i] != "")
- OS << " BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, "
+ OS << " BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, "
<< "TII.get(TargetOpcode::COPY), "
<< (*Memo.PhysRegs)[i] << ").addReg(Op" << i << ");\n";
}
Operands.PrintManglingSuffix(OS, *Memo.PhysRegs,
ImmediatePredicates, true);
OS << "(" << InstNS << Memo.Name << ", ";
- OS << InstNS << Memo.RC->getName() << "RegisterClass";
+ OS << "&" << InstNS << Memo.RC->getName() << "RegClass";
if (!Operands.empty())
OS << ", ";
Operands.PrintArguments(OS, *Memo.PhysRegs);
OS << ", ";
Operands.PrintParameters(OS);
OS << ") {\n";
-
- // If there are any forms of this signature available that operand on
- // constrained forms of the immediate (e.g. 32-bit sext immediate in a
+
+ // If there are any forms of this signature available that operate on
+ // constrained forms of the immediate (e.g., 32-bit sext immediate in a
// 64-bit operand), check them first.
-
+
std::map<OperandsSignature, std::vector<OperandsSignature> >::iterator MI
= SignaturesWithConstantForms.find(Operands);
if (MI != SignaturesWithConstantForms.end()) {
std::sort(MI->second.begin(), MI->second.end());
MI->second.erase(std::unique(MI->second.begin(), MI->second.end()),
MI->second.end());
-
+
// Check each in order it was seen. It would be nice to have a good
// relative ordering between them, but we're not going for optimality
// here.
MI->second[i].PrintArguments(OS);
OS << "))\n return Reg;\n\n";
}
-
+
// Done with this, remove it.
SignaturesWithConstantForms.erase(MI);
}
-
+
OS << " switch (Opcode) {\n";
for (OpcodeTypeRetPredMap::const_iterator I = OTM.begin(), E = OTM.end();
I != E; ++I) {
OS << "}\n";
OS << "\n";
}
-
+
// TODO: SignaturesWithConstantForms should be empty here.
}
-void FastISelEmitter::run(raw_ostream &OS) {
+namespace llvm {
+
+void EmitFastISel(RecordKeeper &RK, raw_ostream &OS) {
+ CodeGenDAGPatterns CGP(RK);
const CodeGenTarget &Target = CGP.getTargetInfo();
+ emitSourceFileHeader("\"Fast\" Instruction Selector for the " +
+ Target.getName() + " target", OS);
// Determine the target's namespace name.
std::string InstNS = Target.getInstNamespace() + "::";
assert(InstNS.size() > 2 && "Can't determine target-specific namespace!");
- EmitSourceFileHeader("\"Fast\" Instruction Selector for the " +
- Target.getName() + " target", OS);
-
FastISelMap F(InstNS);
F.collectPatterns(CGP);
F.printImmediatePredicates(OS);
F.printFunctionDefinitions(OS);
}
-FastISelEmitter::FastISelEmitter(RecordKeeper &R)
- : Records(R), CGP(R) {
-}
-
+} // End llvm namespace
projects / oota-llvm.git / blobdiff