mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27568 91177308-0d34-0410-b5e6-96231b3b80d8
456 lines
16 KiB
C++
456 lines
16 KiB
C++
//===- CodeGenTarget.cpp - CodeGen Target Class Wrapper ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class wrap target description classes used by the various code
|
|
// generation TableGen backends. This makes it easier to access the data and
|
|
// provides a single place that needs to check it for validity. All of these
|
|
// classes throw exceptions on error conditions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "CodeGenTarget.h"
|
|
#include "CodeGenIntrinsics.h"
|
|
#include "Record.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include <set>
|
|
#include <algorithm>
|
|
using namespace llvm;
|
|
|
|
static cl::opt<unsigned>
|
|
AsmWriterNum("asmwriternum", cl::init(0),
|
|
cl::desc("Make -gen-asm-writer emit assembly writer #N"));
|
|
|
|
/// getValueType - Return the MCV::ValueType that the specified TableGen record
|
|
/// corresponds to.
|
|
MVT::ValueType llvm::getValueType(Record *Rec, const CodeGenTarget *CGT) {
|
|
MVT::ValueType VT = (MVT::ValueType)Rec->getValueAsInt("Value");
|
|
if (VT == MVT::iPTR) {
|
|
assert(CGT && "Use a pointer type in a place that isn't supported yet!");
|
|
VT = CGT->getPointerType();
|
|
}
|
|
return VT;
|
|
}
|
|
|
|
std::string llvm::getName(MVT::ValueType T) {
|
|
switch (T) {
|
|
case MVT::Other: return "UNKNOWN";
|
|
case MVT::i1: return "i1";
|
|
case MVT::i8: return "i8";
|
|
case MVT::i16: return "i16";
|
|
case MVT::i32: return "i32";
|
|
case MVT::i64: return "i64";
|
|
case MVT::i128: return "i128";
|
|
case MVT::f32: return "f32";
|
|
case MVT::f64: return "f64";
|
|
case MVT::f80: return "f80";
|
|
case MVT::f128: return "f128";
|
|
case MVT::Flag: return "Flag";
|
|
case MVT::isVoid:return "void";
|
|
case MVT::v8i8: return "v8i8";
|
|
case MVT::v4i16: return "v4i16";
|
|
case MVT::v2i32: return "v2i32";
|
|
case MVT::v16i8: return "v16i8";
|
|
case MVT::v8i16: return "v8i16";
|
|
case MVT::v4i32: return "v4i32";
|
|
case MVT::v2i64: return "v2i64";
|
|
case MVT::v2f32: return "v2f32";
|
|
case MVT::v4f32: return "v4f32";
|
|
case MVT::v2f64: return "v2f64";
|
|
default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
|
|
}
|
|
}
|
|
|
|
std::string llvm::getEnumName(MVT::ValueType T) {
|
|
switch (T) {
|
|
case MVT::Other: return "Other";
|
|
case MVT::i1: return "i1";
|
|
case MVT::i8: return "i8";
|
|
case MVT::i16: return "i16";
|
|
case MVT::i32: return "i32";
|
|
case MVT::i64: return "i64";
|
|
case MVT::i128: return "i128";
|
|
case MVT::f32: return "f32";
|
|
case MVT::f64: return "f64";
|
|
case MVT::f80: return "f80";
|
|
case MVT::f128: return "f128";
|
|
case MVT::Flag: return "Flag";
|
|
case MVT::isVoid:return "isVoid";
|
|
case MVT::v8i8: return "v8i8";
|
|
case MVT::v4i16: return "v4i16";
|
|
case MVT::v2i32: return "v2i32";
|
|
case MVT::v16i8: return "v16i8";
|
|
case MVT::v8i16: return "v8i16";
|
|
case MVT::v4i32: return "v4i32";
|
|
case MVT::v2i64: return "v2i64";
|
|
case MVT::v2f32: return "v2f32";
|
|
case MVT::v4f32: return "v4f32";
|
|
case MVT::v2f64: return "v2f64";
|
|
default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
|
|
}
|
|
}
|
|
|
|
|
|
std::ostream &llvm::operator<<(std::ostream &OS, MVT::ValueType T) {
|
|
return OS << getName(T);
|
|
}
|
|
|
|
|
|
/// getTarget - Return the current instance of the Target class.
|
|
///
|
|
CodeGenTarget::CodeGenTarget() : PointerType(MVT::Other) {
|
|
std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
|
|
if (Targets.size() == 0)
|
|
throw std::string("ERROR: No 'Target' subclasses defined!");
|
|
if (Targets.size() != 1)
|
|
throw std::string("ERROR: Multiple subclasses of Target defined!");
|
|
TargetRec = Targets[0];
|
|
|
|
// Read in all of the CalleeSavedRegisters.
|
|
CalleeSavedRegisters =TargetRec->getValueAsListOfDefs("CalleeSavedRegisters");
|
|
PointerType = getValueType(TargetRec->getValueAsDef("PointerType"));
|
|
}
|
|
|
|
|
|
const std::string &CodeGenTarget::getName() const {
|
|
return TargetRec->getName();
|
|
}
|
|
|
|
Record *CodeGenTarget::getInstructionSet() const {
|
|
return TargetRec->getValueAsDef("InstructionSet");
|
|
}
|
|
|
|
/// getAsmWriter - Return the AssemblyWriter definition for this target.
|
|
///
|
|
Record *CodeGenTarget::getAsmWriter() const {
|
|
std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyWriters");
|
|
if (AsmWriterNum >= LI.size())
|
|
throw "Target does not have an AsmWriter #" + utostr(AsmWriterNum) + "!";
|
|
return LI[AsmWriterNum];
|
|
}
|
|
|
|
void CodeGenTarget::ReadRegisters() const {
|
|
std::vector<Record*> Regs = Records.getAllDerivedDefinitions("Register");
|
|
if (Regs.empty())
|
|
throw std::string("No 'Register' subclasses defined!");
|
|
|
|
Registers.reserve(Regs.size());
|
|
Registers.assign(Regs.begin(), Regs.end());
|
|
}
|
|
|
|
CodeGenRegister::CodeGenRegister(Record *R) : TheDef(R) {
|
|
DeclaredSpillSize = R->getValueAsInt("SpillSize");
|
|
DeclaredSpillAlignment = R->getValueAsInt("SpillAlignment");
|
|
}
|
|
|
|
const std::string &CodeGenRegister::getName() const {
|
|
return TheDef->getName();
|
|
}
|
|
|
|
void CodeGenTarget::ReadRegisterClasses() const {
|
|
std::vector<Record*> RegClasses =
|
|
Records.getAllDerivedDefinitions("RegisterClass");
|
|
if (RegClasses.empty())
|
|
throw std::string("No 'RegisterClass' subclasses defined!");
|
|
|
|
RegisterClasses.reserve(RegClasses.size());
|
|
RegisterClasses.assign(RegClasses.begin(), RegClasses.end());
|
|
}
|
|
|
|
CodeGenRegisterClass::CodeGenRegisterClass(Record *R) : TheDef(R) {
|
|
// Rename anonymous register classes.
|
|
if (R->getName().size() > 9 && R->getName()[9] == '.') {
|
|
static unsigned AnonCounter = 0;
|
|
R->setName("AnonRegClass_"+utostr(AnonCounter++));
|
|
}
|
|
|
|
std::vector<Record*> TypeList = R->getValueAsListOfDefs("RegTypes");
|
|
for (unsigned i = 0, e = TypeList.size(); i != e; ++i) {
|
|
Record *Type = TypeList[i];
|
|
if (!Type->isSubClassOf("ValueType"))
|
|
throw "RegTypes list member '" + Type->getName() +
|
|
"' does not derive from the ValueType class!";
|
|
VTs.push_back(getValueType(Type));
|
|
}
|
|
assert(!VTs.empty() && "RegisterClass must contain at least one ValueType!");
|
|
|
|
std::vector<Record*> RegList = R->getValueAsListOfDefs("MemberList");
|
|
for (unsigned i = 0, e = RegList.size(); i != e; ++i) {
|
|
Record *Reg = RegList[i];
|
|
if (!Reg->isSubClassOf("Register"))
|
|
throw "Register Class member '" + Reg->getName() +
|
|
"' does not derive from the Register class!";
|
|
Elements.push_back(Reg);
|
|
}
|
|
|
|
// Allow targets to override the size in bits of the RegisterClass.
|
|
unsigned Size = R->getValueAsInt("Size");
|
|
|
|
Namespace = R->getValueAsString("Namespace");
|
|
SpillSize = Size ? Size : MVT::getSizeInBits(VTs[0]);
|
|
SpillAlignment = R->getValueAsInt("Alignment");
|
|
MethodBodies = R->getValueAsCode("MethodBodies");
|
|
MethodProtos = R->getValueAsCode("MethodProtos");
|
|
}
|
|
|
|
const std::string &CodeGenRegisterClass::getName() const {
|
|
return TheDef->getName();
|
|
}
|
|
|
|
void CodeGenTarget::ReadLegalValueTypes() const {
|
|
const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
|
|
for (unsigned i = 0, e = RCs.size(); i != e; ++i)
|
|
for (unsigned ri = 0, re = RCs[i].VTs.size(); ri != re; ++ri)
|
|
LegalValueTypes.push_back(RCs[i].VTs[ri]);
|
|
|
|
// Remove duplicates.
|
|
std::sort(LegalValueTypes.begin(), LegalValueTypes.end());
|
|
LegalValueTypes.erase(std::unique(LegalValueTypes.begin(),
|
|
LegalValueTypes.end()),
|
|
LegalValueTypes.end());
|
|
}
|
|
|
|
|
|
void CodeGenTarget::ReadInstructions() const {
|
|
std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");
|
|
if (Insts.size() <= 2)
|
|
throw std::string("No 'Instruction' subclasses defined!");
|
|
|
|
// Parse the instructions defined in the .td file.
|
|
std::string InstFormatName =
|
|
getAsmWriter()->getValueAsString("InstFormatName");
|
|
|
|
for (unsigned i = 0, e = Insts.size(); i != e; ++i) {
|
|
std::string AsmStr = Insts[i]->getValueAsString(InstFormatName);
|
|
Instructions.insert(std::make_pair(Insts[i]->getName(),
|
|
CodeGenInstruction(Insts[i], AsmStr)));
|
|
}
|
|
}
|
|
|
|
/// getInstructionsByEnumValue - Return all of the instructions defined by the
|
|
/// target, ordered by their enum value.
|
|
void CodeGenTarget::
|
|
getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
|
|
&NumberedInstructions) {
|
|
std::map<std::string, CodeGenInstruction>::const_iterator I;
|
|
I = getInstructions().find("PHI");
|
|
if (I == Instructions.end()) throw "Could not find 'PHI' instruction!";
|
|
const CodeGenInstruction *PHI = &I->second;
|
|
|
|
I = getInstructions().find("INLINEASM");
|
|
if (I == Instructions.end()) throw "Could not find 'INLINEASM' instruction!";
|
|
const CodeGenInstruction *INLINEASM = &I->second;
|
|
|
|
// Print out the rest of the instructions now.
|
|
NumberedInstructions.push_back(PHI);
|
|
NumberedInstructions.push_back(INLINEASM);
|
|
for (inst_iterator II = inst_begin(), E = inst_end(); II != E; ++II)
|
|
if (&II->second != PHI &&&II->second != INLINEASM)
|
|
NumberedInstructions.push_back(&II->second);
|
|
}
|
|
|
|
|
|
/// isLittleEndianEncoding - Return whether this target encodes its instruction
|
|
/// in little-endian format, i.e. bits laid out in the order [0..n]
|
|
///
|
|
bool CodeGenTarget::isLittleEndianEncoding() const {
|
|
return getInstructionSet()->getValueAsBit("isLittleEndianEncoding");
|
|
}
|
|
|
|
CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
|
|
: TheDef(R), AsmString(AsmStr) {
|
|
Name = R->getValueAsString("Name");
|
|
Namespace = R->getValueAsString("Namespace");
|
|
|
|
isReturn = R->getValueAsBit("isReturn");
|
|
isBranch = R->getValueAsBit("isBranch");
|
|
isBarrier = R->getValueAsBit("isBarrier");
|
|
isCall = R->getValueAsBit("isCall");
|
|
isLoad = R->getValueAsBit("isLoad");
|
|
isStore = R->getValueAsBit("isStore");
|
|
isTwoAddress = R->getValueAsBit("isTwoAddress");
|
|
isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
|
|
isCommutable = R->getValueAsBit("isCommutable");
|
|
isTerminator = R->getValueAsBit("isTerminator");
|
|
hasDelaySlot = R->getValueAsBit("hasDelaySlot");
|
|
usesCustomDAGSchedInserter = R->getValueAsBit("usesCustomDAGSchedInserter");
|
|
hasCtrlDep = R->getValueAsBit("hasCtrlDep");
|
|
noResults = R->getValueAsBit("noResults");
|
|
hasVariableNumberOfOperands = false;
|
|
|
|
DagInit *DI;
|
|
try {
|
|
DI = R->getValueAsDag("OperandList");
|
|
} catch (...) {
|
|
// Error getting operand list, just ignore it (sparcv9).
|
|
AsmString.clear();
|
|
OperandList.clear();
|
|
return;
|
|
}
|
|
|
|
unsigned MIOperandNo = 0;
|
|
std::set<std::string> OperandNames;
|
|
for (unsigned i = 0, e = DI->getNumArgs(); i != e; ++i) {
|
|
DefInit *Arg = dynamic_cast<DefInit*>(DI->getArg(i));
|
|
if (!Arg)
|
|
throw "Illegal operand for the '" + R->getName() + "' instruction!";
|
|
|
|
Record *Rec = Arg->getDef();
|
|
std::string PrintMethod = "printOperand";
|
|
unsigned NumOps = 1;
|
|
DagInit *MIOpInfo = 0;
|
|
if (Rec->isSubClassOf("Operand")) {
|
|
PrintMethod = Rec->getValueAsString("PrintMethod");
|
|
NumOps = Rec->getValueAsInt("NumMIOperands");
|
|
MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
|
|
} else if (Rec->getName() == "variable_ops") {
|
|
hasVariableNumberOfOperands = true;
|
|
continue;
|
|
} else if (!Rec->isSubClassOf("RegisterClass"))
|
|
throw "Unknown operand class '" + Rec->getName() +
|
|
"' in instruction '" + R->getName() + "' instruction!";
|
|
|
|
// Check that the operand has a name and that it's unique.
|
|
if (DI->getArgName(i).empty())
|
|
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
|
|
" has no name!";
|
|
if (!OperandNames.insert(DI->getArgName(i)).second)
|
|
throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
|
|
" has the same name as a previous operand!";
|
|
|
|
OperandList.push_back(OperandInfo(Rec, DI->getArgName(i), PrintMethod,
|
|
MIOperandNo, NumOps, MIOpInfo));
|
|
MIOperandNo += NumOps;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/// getOperandNamed - Return the index of the operand with the specified
|
|
/// non-empty name. If the instruction does not have an operand with the
|
|
/// specified name, throw an exception.
|
|
///
|
|
unsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const {
|
|
assert(!Name.empty() && "Cannot search for operand with no name!");
|
|
for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
|
|
if (OperandList[i].Name == Name) return i;
|
|
throw "Instruction '" + TheDef->getName() +
|
|
"' does not have an operand named '$" + Name + "'!";
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ComplexPattern implementation
|
|
//
|
|
ComplexPattern::ComplexPattern(Record *R) {
|
|
Ty = ::getValueType(R->getValueAsDef("Ty"));
|
|
NumOperands = R->getValueAsInt("NumOperands");
|
|
SelectFunc = R->getValueAsString("SelectFunc");
|
|
RootNodes = R->getValueAsListOfDefs("RootNodes");
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CodeGenIntrinsic Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC) {
|
|
std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
|
|
|
|
std::vector<CodeGenIntrinsic> Result;
|
|
|
|
// If we are in the context of a target .td file, get the target info so that
|
|
// we can decode the current intptr_t.
|
|
CodeGenTarget *CGT = 0;
|
|
if (Records.getClass("Target") &&
|
|
Records.getAllDerivedDefinitions("Target").size() == 1)
|
|
CGT = new CodeGenTarget();
|
|
|
|
for (unsigned i = 0, e = I.size(); i != e; ++i)
|
|
Result.push_back(CodeGenIntrinsic(I[i], CGT));
|
|
delete CGT;
|
|
return Result;
|
|
}
|
|
|
|
CodeGenIntrinsic::CodeGenIntrinsic(Record *R, CodeGenTarget *CGT) {
|
|
TheDef = R;
|
|
std::string DefName = R->getName();
|
|
ModRef = WriteMem;
|
|
|
|
if (DefName.size() <= 4 ||
|
|
std::string(DefName.begin(), DefName.begin()+4) != "int_")
|
|
throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
|
|
EnumName = std::string(DefName.begin()+4, DefName.end());
|
|
if (R->getValue("GCCBuiltinName")) // Ignore a missing GCCBuiltinName field.
|
|
GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
|
|
TargetPrefix = R->getValueAsString("TargetPrefix");
|
|
Name = R->getValueAsString("LLVMName");
|
|
if (Name == "") {
|
|
// If an explicit name isn't specified, derive one from the DefName.
|
|
Name = "llvm.";
|
|
for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
|
|
if (EnumName[i] == '_')
|
|
Name += '.';
|
|
else
|
|
Name += EnumName[i];
|
|
} else {
|
|
// Verify it starts with "llvm.".
|
|
if (Name.size() <= 5 ||
|
|
std::string(Name.begin(), Name.begin()+5) != "llvm.")
|
|
throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
|
|
}
|
|
|
|
// If TargetPrefix is specified, make sure that Name starts with
|
|
// "llvm.<targetprefix>.".
|
|
if (!TargetPrefix.empty()) {
|
|
if (Name.size() < 6+TargetPrefix.size() ||
|
|
std::string(Name.begin()+5, Name.begin()+6+TargetPrefix.size())
|
|
!= (TargetPrefix+"."))
|
|
throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
|
|
TargetPrefix + ".'!";
|
|
}
|
|
|
|
// Parse the list of argument types.
|
|
ListInit *TypeList = R->getValueAsListInit("Types");
|
|
for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
|
|
DefInit *DI = dynamic_cast<DefInit*>(TypeList->getElement(i));
|
|
assert(DI && "Invalid list type!");
|
|
Record *TyEl = DI->getDef();
|
|
assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
|
|
ArgTypes.push_back(TyEl->getValueAsString("TypeVal"));
|
|
|
|
if (CGT)
|
|
ArgVTs.push_back(getValueType(TyEl->getValueAsDef("VT"), CGT));
|
|
ArgTypeDefs.push_back(TyEl);
|
|
}
|
|
if (ArgTypes.size() == 0)
|
|
throw "Intrinsic '"+DefName+"' needs at least a type for the ret value!";
|
|
|
|
// Parse the intrinsic properties.
|
|
ListInit *PropList = R->getValueAsListInit("Properties");
|
|
for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
|
|
DefInit *DI = dynamic_cast<DefInit*>(PropList->getElement(i));
|
|
assert(DI && "Invalid list type!");
|
|
Record *Property = DI->getDef();
|
|
assert(Property->isSubClassOf("IntrinsicProperty") &&
|
|
"Expected a property!");
|
|
|
|
if (Property->getName() == "IntrNoMem")
|
|
ModRef = NoMem;
|
|
else if (Property->getName() == "IntrReadArgMem")
|
|
ModRef = ReadArgMem;
|
|
else if (Property->getName() == "IntrReadMem")
|
|
ModRef = ReadMem;
|
|
else if (Property->getName() == "IntrWriteArgMem")
|
|
ModRef = WriteArgMem;
|
|
else if (Property->getName() == "IntrWriteMem")
|
|
ModRef = WriteMem;
|
|
else
|
|
assert(0 && "Unknown property!");
|
|
}
|
|
}
|