//
// Some targets need a custom way to parse operands, some specific instructions
// can contain arguments that can represent processor flags and other kinds of
-// identifiers that need to be mapped to specific valeus in the final encoded
+// identifiers that need to be mapped to specific values in the final encoded
// instructions. The target specific custom operand parsing works in the
// following way:
//
//
//===----------------------------------------------------------------------===//
-#include "AsmMatcherEmitter.h"
#include "CodeGenTarget.h"
#include "StringToOffsetTable.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/PointerUnion.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/StringMatcher.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include <cassert>
#include <map>
#include <set>
using namespace llvm;
class AsmMatcherInfo;
struct SubtargetFeatureInfo;
+class AsmMatcherEmitter {
+ RecordKeeper &Records;
+public:
+ AsmMatcherEmitter(RecordKeeper &R) : Records(R) {}
+
+ void run(raw_ostream &o);
+};
+
/// ClassInfo - Helper class for storing the information about a particular
/// class of operands which can be matched.
struct ClassInfo {
/// For register classes, the records for all the registers in this class.
std::set<Record*> Registers;
+ /// For custom match classes, he diagnostic kind for when the predicate fails.
+ std::string DiagnosticType;
public:
/// isRegisterClass() - Check if this is a register class.
bool isRegisterClass() const {
return Kind >= UserClass0;
}
- /// isRelatedTo - Check whether this class is "related" to \arg RHS. Classes
+ /// isRelatedTo - Check whether this class is "related" to \p RHS. Classes
/// are related if they are in the same class hierarchy.
bool isRelatedTo(const ClassInfo &RHS) const {
// Tokens are only related to tokens.
return Root == RHSRoot;
}
- /// isSubsetOf - Test whether this class is a subset of \arg RHS;
+ /// isSubsetOf - Test whether this class is a subset of \p RHS.
bool isSubsetOf(const ClassInfo &RHS) const {
// This is a subset of RHS if it is the same class...
if (this == &RHS)
}
};
+namespace {
+/// Sort ClassInfo pointers independently of pointer value.
+struct LessClassInfoPtr {
+ bool operator()(const ClassInfo *LHS, const ClassInfo *RHS) const {
+ return *LHS < *RHS;
+ }
+};
+}
+
/// MatchableInfo - Helper class for storing the necessary information for an
/// instruction or alias which is capable of being matched.
struct MatchableInfo {
SmallVector<SubtargetFeatureInfo*, 4> RequiredFeatures;
/// ConversionFnKind - The enum value which is passed to the generated
- /// ConvertToMCInst to convert parsed operands into an MCInst for this
+ /// convertToMCInst to convert parsed operands into an MCInst for this
/// function.
std::string ConversionFnKind;
return false;
}
+ // Give matches that require more features higher precedence. This is useful
+ // because we cannot define AssemblerPredicates with the negation of
+ // processor features. For example, ARM v6 "nop" may be either a HINT or
+ // MOV. With v6, we want to match HINT. The assembler has no way to
+ // predicate MOV under "NoV6", but HINT will always match first because it
+ // requires V6 while MOV does not.
+ if (RequiredFeatures.size() != RHS.RequiredFeatures.size())
+ return RequiredFeatures.size() > RHS.RequiredFeatures.size();
+
return false;
}
/// couldMatchAmbiguouslyWith - Check whether this matchable could
- /// ambiguously match the same set of operands as \arg RHS (without being a
+ /// ambiguously match the same set of operands as \p RHS (without being a
/// strictly superior match).
bool couldMatchAmbiguouslyWith(const MatchableInfo &RHS) {
// The primary comparator is the instruction mnemonic.
std::vector<OperandMatchEntry> OperandMatchInfo;
/// Map of Register records to their class information.
- std::map<Record*, ClassInfo*> RegisterClasses;
+ typedef std::map<Record*, ClassInfo*, LessRecordByID> RegisterClassesTy;
+ RegisterClassesTy RegisterClasses;
/// Map of Predicate records to their subtarget information.
std::map<Record*, SubtargetFeatureInfo*> SubtargetFeatures;
+ /// Map of AsmOperandClass records to their class information.
+ std::map<Record*, ClassInfo*> AsmOperandClasses;
+
private:
/// Map of token to class information which has already been constructed.
std::map<std::string, ClassInfo*> TokenClasses;
/// Map of RegisterClass records to their class information.
std::map<Record*, ClassInfo*> RegisterClassClasses;
- /// Map of AsmOperandClass records to their class information.
- std::map<Record*, ClassInfo*> AsmOperandClasses;
-
private:
/// getTokenClass - Lookup or create the class for the given token.
ClassInfo *getTokenClass(StringRef Token);
}
};
-}
+} // End anonymous namespace
void MatchableInfo::dump() {
errs() << TheDef->getName() << " -- " << "flattened:\"" << AsmString <<"\"\n";
}
static std::pair<StringRef, StringRef>
-parseTwoOperandConstraint(StringRef S, SMLoc Loc) {
+parseTwoOperandConstraint(StringRef S, ArrayRef<SMLoc> Loc) {
// Split via the '='.
std::pair<StringRef, StringRef> Ops = S.split('=');
if (Ops.second == "")
- throw TGError(Loc, "missing '=' in two-operand alias constraint");
+ PrintFatalError(Loc, "missing '=' in two-operand alias constraint");
// Trim whitespace and the leading '$' on the operand names.
size_t start = Ops.first.find_first_of('$');
if (start == std::string::npos)
- throw TGError(Loc, "expected '$' prefix on asm operand name");
+ PrintFatalError(Loc, "expected '$' prefix on asm operand name");
Ops.first = Ops.first.slice(start + 1, std::string::npos);
size_t end = Ops.first.find_last_of(" \t");
Ops.first = Ops.first.slice(0, end);
// Now the second operand.
start = Ops.second.find_first_of('$');
if (start == std::string::npos)
- throw TGError(Loc, "expected '$' prefix on asm operand name");
+ PrintFatalError(Loc, "expected '$' prefix on asm operand name");
Ops.second = Ops.second.slice(start + 1, std::string::npos);
end = Ops.second.find_last_of(" \t");
Ops.first = Ops.first.slice(0, end);
int SrcAsmOperand = findAsmOperandNamed(Ops.first);
int DstAsmOperand = findAsmOperandNamed(Ops.second);
if (SrcAsmOperand == -1)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"unknown source two-operand alias operand '" +
Ops.first.str() + "'.");
if (DstAsmOperand == -1)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"unknown destination two-operand alias operand '" +
Ops.second.str() + "'.");
// The first token of the instruction is the mnemonic, which must be a
// simple string, not a $foo variable or a singleton register.
if (AsmOperands.empty())
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"Instruction '" + TheDef->getName() + "' has no tokens");
Mnemonic = AsmOperands[0].Token;
+ if (Mnemonic.empty())
+ PrintFatalError(TheDef->getLoc(),
+ "Missing instruction mnemonic");
// FIXME : Check and raise an error if it is a register.
if (Mnemonic[0] == '$')
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"Invalid instruction mnemonic '" + Mnemonic.str() + "'!");
// Remove the first operand, it is tracked in the mnemonic field.
bool MatchableInfo::validate(StringRef CommentDelimiter, bool Hack) const {
// Reject matchables with no .s string.
if (AsmString.empty())
- throw TGError(TheDef->getLoc(), "instruction with empty asm string");
+ PrintFatalError(TheDef->getLoc(), "instruction with empty asm string");
// Reject any matchables with a newline in them, they should be marked
// isCodeGenOnly if they are pseudo instructions.
if (AsmString.find('\n') != std::string::npos)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"multiline instruction is not valid for the asmparser, "
"mark it isCodeGenOnly");
// has one line.
if (!CommentDelimiter.empty() &&
StringRef(AsmString).find(CommentDelimiter) != StringRef::npos)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"asmstring for instruction has comment character in it, "
"mark it isCodeGenOnly");
for (unsigned i = 0, e = AsmOperands.size(); i != e; ++i) {
StringRef Tok = AsmOperands[i].Token;
if (Tok[0] == '$' && Tok.find(':') != StringRef::npos)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"matchable with operand modifier '" + Tok.str() +
"' not supported by asm matcher. Mark isCodeGenOnly!");
// We reject aliases and ignore instructions for now.
if (Tok[0] == '$' && !OperandNames.insert(Tok).second) {
if (!Hack)
- throw TGError(TheDef->getLoc(),
+ PrintFatalError(TheDef->getLoc(),
"ERROR: matchable with tied operand '" + Tok.str() +
"' can never be matched!");
// FIXME: Should reject these. The ARM backend hits this with $lane in a
case ':': Res += "_COLON_"; break;
case '!': Res += "_EXCLAIM_"; break;
case '.': Res += "_DOT_"; break;
+ case '<': Res += "_LT_"; break;
+ case '>': Res += "_GT_"; break;
default:
- if (isalnum(*it))
+ if ((*it >= 'A' && *it <= 'Z') ||
+ (*it >= 'a' && *it <= 'z') ||
+ (*it >= '0' && *it <= '9'))
Res += *it;
else
Res += "_" + utostr((unsigned) *it) + "_";
Entry->PredicateMethod = "<invalid>";
Entry->RenderMethod = "<invalid>";
Entry->ParserMethod = "";
+ Entry->DiagnosticType = "";
Classes.push_back(Entry);
}
int SubOpIdx) {
Record *Rec = OI.Rec;
if (SubOpIdx != -1)
- Rec = dynamic_cast<DefInit*>(OI.MIOperandInfo->getArg(SubOpIdx))->getDef();
+ Rec = cast<DefInit>(OI.MIOperandInfo->getArg(SubOpIdx))->getDef();
return getOperandClass(Rec, SubOpIdx);
}
// use it, else just fall back to the underlying register class.
const RecordVal *R = Rec->getValue("ParserMatchClass");
if (R == 0 || R->getValue() == 0)
- throw "Record `" + Rec->getName() +
- "' does not have a ParserMatchClass!\n";
+ PrintFatalError("Record `" + Rec->getName() +
+ "' does not have a ParserMatchClass!\n");
- if (DefInit *DI= dynamic_cast<DefInit*>(R->getValue())) {
+ if (DefInit *DI= dyn_cast<DefInit>(R->getValue())) {
Record *MatchClass = DI->getDef();
if (ClassInfo *CI = AsmOperandClasses[MatchClass])
return CI;
// No custom match class. Just use the register class.
Record *ClassRec = Rec->getValueAsDef("RegClass");
if (!ClassRec)
- throw TGError(Rec->getLoc(), "RegisterOperand `" + Rec->getName() +
+ PrintFatalError(Rec->getLoc(), "RegisterOperand `" + Rec->getName() +
"' has no associated register class!\n");
if (ClassInfo *CI = RegisterClassClasses[ClassRec])
return CI;
- throw TGError(Rec->getLoc(), "register class has no class info!");
+ PrintFatalError(Rec->getLoc(), "register class has no class info!");
}
if (Rec->isSubClassOf("RegisterClass")) {
if (ClassInfo *CI = RegisterClassClasses[Rec])
return CI;
- throw TGError(Rec->getLoc(), "register class has no class info!");
+ PrintFatalError(Rec->getLoc(), "register class has no class info!");
}
- assert(Rec->isSubClassOf("Operand") && "Unexpected operand!");
+ if (!Rec->isSubClassOf("Operand"))
+ PrintFatalError(Rec->getLoc(), "Operand `" + Rec->getName() +
+ "' does not derive from class Operand!\n");
Record *MatchClass = Rec->getValueAsDef("ParserMatchClass");
if (ClassInfo *CI = AsmOperandClasses[MatchClass])
return CI;
- throw TGError(Rec->getLoc(), "operand has no match class!");
+ PrintFatalError(Rec->getLoc(), "operand has no match class!");
}
void AsmMatcherInfo::
CI->PredicateMethod = ""; // unused
CI->RenderMethod = "addRegOperands";
CI->Registers = *it;
+ // FIXME: diagnostic type.
+ CI->DiagnosticType = "";
Classes.push_back(CI);
RegisterSetClasses.insert(std::make_pair(*it, CI));
}
ListInit *Supers = (*it)->getValueAsListInit("SuperClasses");
for (unsigned i = 0, e = Supers->getSize(); i != e; ++i) {
- DefInit *DI = dynamic_cast<DefInit*>(Supers->getElement(i));
+ DefInit *DI = dyn_cast<DefInit>(Supers->getElement(i));
if (!DI) {
PrintError((*it)->getLoc(), "Invalid super class reference!");
continue;
// Get or construct the predicate method name.
Init *PMName = (*it)->getValueInit("PredicateMethod");
- if (StringInit *SI = dynamic_cast<StringInit*>(PMName)) {
+ if (StringInit *SI = dyn_cast<StringInit>(PMName)) {
CI->PredicateMethod = SI->getValue();
} else {
- assert(dynamic_cast<UnsetInit*>(PMName) &&
- "Unexpected PredicateMethod field!");
+ assert(isa<UnsetInit>(PMName) && "Unexpected PredicateMethod field!");
CI->PredicateMethod = "is" + CI->ClassName;
}
// Get or construct the render method name.
Init *RMName = (*it)->getValueInit("RenderMethod");
- if (StringInit *SI = dynamic_cast<StringInit*>(RMName)) {
+ if (StringInit *SI = dyn_cast<StringInit>(RMName)) {
CI->RenderMethod = SI->getValue();
} else {
- assert(dynamic_cast<UnsetInit*>(RMName) &&
- "Unexpected RenderMethod field!");
+ assert(isa<UnsetInit>(RMName) && "Unexpected RenderMethod field!");
CI->RenderMethod = "add" + CI->ClassName + "Operands";
}
// Get the parse method name or leave it as empty.
Init *PRMName = (*it)->getValueInit("ParserMethod");
- if (StringInit *SI = dynamic_cast<StringInit*>(PRMName))
+ if (StringInit *SI = dyn_cast<StringInit>(PRMName))
CI->ParserMethod = SI->getValue();
+ // Get the diagnostic type or leave it as empty.
+ // Get the parse method name or leave it as empty.
+ Init *DiagnosticType = (*it)->getValueInit("DiagnosticType");
+ if (StringInit *SI = dyn_cast<StringInit>(DiagnosticType))
+ CI->DiagnosticType = SI->getValue();
+
AsmOperandClasses[*it] = CI;
Classes.push_back(CI);
}
/// Map containing a mask with all operands indices that can be found for
/// that class inside a instruction.
- std::map<ClassInfo*, unsigned> OpClassMask;
+ typedef std::map<ClassInfo*, unsigned, LessClassInfoPtr> OpClassMaskTy;
+ OpClassMaskTy OpClassMask;
for (std::vector<MatchableInfo*>::const_iterator it =
Matchables.begin(), ie = Matchables.end();
}
// Generate operand match info for each mnemonic/operand class pair.
- for (std::map<ClassInfo*, unsigned>::iterator iit = OpClassMask.begin(),
+ for (OpClassMaskTy::iterator iit = OpClassMask.begin(),
iie = OpClassMask.end(); iit != iie; ++iit) {
unsigned OpMask = iit->second;
ClassInfo *CI = iit->first;
continue;
if (Pred->getName().empty())
- throw TGError(Pred->getLoc(), "Predicate has no name!");
+ PrintFatalError(Pred->getLoc(), "Predicate has no name!");
unsigned FeatureNo = SubtargetFeatures.size();
SubtargetFeatures[Pred] = new SubtargetFeatureInfo(Pred, FeatureNo);
if (CGI.TheDef->getValueAsBit("isCodeGenOnly"))
continue;
- // Validate the operand list to ensure we can handle this instruction.
- for (unsigned i = 0, e = CGI.Operands.size(); i != e; ++i) {
- const CGIOperandList::OperandInfo &OI = CGI.Operands[i];
-
- // Validate tied operands.
- if (OI.getTiedRegister() != -1) {
- // If we have a tied operand that consists of multiple MCOperands,
- // reject it. We reject aliases and ignore instructions for now.
- if (OI.MINumOperands != 1) {
- // FIXME: Should reject these. The ARM backend hits this with $lane
- // in a bunch of instructions. The right answer is unclear.
- DEBUG({
- errs() << "warning: '" << CGI.TheDef->getName() << "': "
- << "ignoring instruction with multi-operand tied operand '"
- << OI.Name << "'\n";
- });
- continue;
- }
- }
- }
-
OwningPtr<MatchableInfo> II(new MatchableInfo(CGI));
II->initialize(*this, SingletonRegisters, AsmVariantNo, RegisterPrefix);
ClassInfo *FromClass = getTokenClass(Rec->getValueAsString("FromToken"));
ClassInfo *ToClass = getTokenClass(Rec->getValueAsString("ToToken"));
if (FromClass == ToClass)
- throw TGError(Rec->getLoc(),
+ PrintFatalError(Rec->getLoc(),
"error: Destination value identical to source value.");
FromClass->SuperClasses.push_back(ToClass);
}
// Map this token to an operand.
unsigned Idx;
if (!Operands.hasOperandNamed(OperandName, Idx))
- throw TGError(II->TheDef->getLoc(), "error: unable to find operand: '" +
+ PrintFatalError(II->TheDef->getLoc(), "error: unable to find operand: '" +
OperandName.str() + "'");
// If the instruction operand has multiple suboperands, but the parser
// we want to canonicalize to:
// "inc $dst"
// so that we know how to provide the $dst operand when filling in the result.
- int OITied = Operands[Idx].getTiedRegister();
+ int OITied = -1;
+ if (Operands[Idx].MINumOperands == 1)
+ OITied = Operands[Idx].getTiedRegister();
if (OITied != -1) {
// The tied operand index is an MIOperand index, find the operand that
// contains it.
return;
}
- throw TGError(II->TheDef->getLoc(), "error: unable to find operand: '" +
+ PrintFatalError(II->TheDef->getLoc(), "error: unable to find operand: '" +
OperandName.str() + "'");
}
const CGIOperandList::OperandInfo &OpInfo = ResultInst->Operands[i];
// If this is a tied operand, just copy from the previously handled operand.
- int TiedOp = OpInfo.getTiedRegister();
+ int TiedOp = -1;
+ if (OpInfo.MINumOperands == 1)
+ TiedOp = OpInfo.getTiedRegister();
if (TiedOp != -1) {
ResOperands.push_back(ResOperand::getTiedOp(TiedOp));
continue;
// Find out what operand from the asmparser this MCInst operand comes from.
int SrcOperand = findAsmOperandNamed(OpInfo.Name);
- if (OpInfo.Name.empty() || SrcOperand == -1)
- throw TGError(TheDef->getLoc(), "Instruction '" +
- TheDef->getName() + "' has operand '" + OpInfo.Name +
- "' that doesn't appear in asm string!");
+ if (OpInfo.Name.empty() || SrcOperand == -1) {
+ // This may happen for operands that are tied to a suboperand of a
+ // complex operand. Simply use a dummy value here; nobody should
+ // use this operand slot.
+ // FIXME: The long term goal is for the MCOperand list to not contain
+ // tied operands at all.
+ ResOperands.push_back(ResOperand::getImmOp(0));
+ continue;
+ }
// Check if the one AsmOperand populates the entire operand.
unsigned NumOperands = OpInfo.MINumOperands;
const CGIOperandList::OperandInfo *OpInfo = &ResultInst->Operands[i];
// If this is a tied operand, just copy from the previously handled operand.
- int TiedOp = OpInfo->getTiedRegister();
+ int TiedOp = -1;
+ if (OpInfo->MINumOperands == 1)
+ TiedOp = OpInfo->getTiedRegister();
if (TiedOp != -1) {
ResOperands.push_back(ResOperand::getTiedOp(TiedOp));
continue;
StringRef Name = CGA.ResultOperands[AliasOpNo].getName();
int SrcOperand = findAsmOperand(Name, SubIdx);
if (SrcOperand == -1)
- throw TGError(TheDef->getLoc(), "Instruction '" +
+ PrintFatalError(TheDef->getLoc(), "Instruction '" +
TheDef->getName() + "' has operand '" + OpName +
"' that doesn't appear in asm string!");
unsigned NumOperands = (SubIdx == -1 ? OpInfo->MINumOperands : 1);
}
}
-static void emitConvertToMCInst(CodeGenTarget &Target, StringRef ClassName,
- std::vector<MatchableInfo*> &Infos,
- raw_ostream &OS) {
- // Write the convert function to a separate stream, so we can drop it after
- // the enum.
- std::string ConvertFnBody;
- raw_string_ostream CvtOS(ConvertFnBody);
+static unsigned getConverterOperandID(const std::string &Name,
+ SetVector<std::string> &Table,
+ bool &IsNew) {
+ IsNew = Table.insert(Name);
- // Function we have already generated.
- std::set<std::string> GeneratedFns;
+ unsigned ID = IsNew ? Table.size() - 1 :
+ std::find(Table.begin(), Table.end(), Name) - Table.begin();
- // Start the unified conversion function.
- CvtOS << "bool " << Target.getName() << ClassName << "::\n";
- CvtOS << "ConvertToMCInst(unsigned Kind, MCInst &Inst, "
- << "unsigned Opcode,\n"
- << " const SmallVectorImpl<MCParsedAsmOperand*"
- << "> &Operands) {\n";
- CvtOS << " Inst.setOpcode(Opcode);\n";
- CvtOS << " switch (Kind) {\n";
- CvtOS << " default:\n";
+ assert(ID < Table.size());
+
+ return ID;
+}
- // Start the enum, which we will generate inline.
- OS << "// Unified function for converting operands to MCInst instances.\n\n";
- OS << "enum ConversionKind {\n";
+static void emitConvertFuncs(CodeGenTarget &Target, StringRef ClassName,
+ std::vector<MatchableInfo*> &Infos,
+ raw_ostream &OS) {
+ SetVector<std::string> OperandConversionKinds;
+ SetVector<std::string> InstructionConversionKinds;
+ std::vector<std::vector<uint8_t> > ConversionTable;
+ size_t MaxRowLength = 2; // minimum is custom converter plus terminator.
// TargetOperandClass - This is the target's operand class, like X86Operand.
std::string TargetOperandClass = Target.getName() + "Operand";
+ // Write the convert function to a separate stream, so we can drop it after
+ // the enum. We'll build up the conversion handlers for the individual
+ // operand types opportunistically as we encounter them.
+ std::string ConvertFnBody;
+ raw_string_ostream CvtOS(ConvertFnBody);
+ // Start the unified conversion function.
+ CvtOS << "void " << Target.getName() << ClassName << "::\n"
+ << "convertToMCInst(unsigned Kind, MCInst &Inst, "
+ << "unsigned Opcode,\n"
+ << " const SmallVectorImpl<MCParsedAsmOperand*"
+ << "> &Operands) {\n"
+ << " assert(Kind < CVT_NUM_SIGNATURES && \"Invalid signature!\");\n"
+ << " const uint8_t *Converter = ConversionTable[Kind];\n"
+ << " Inst.setOpcode(Opcode);\n"
+ << " for (const uint8_t *p = Converter; *p; p+= 2) {\n"
+ << " switch (*p) {\n"
+ << " default: llvm_unreachable(\"invalid conversion entry!\");\n"
+ << " case CVT_Reg:\n"
+ << " static_cast<" << TargetOperandClass
+ << "*>(Operands[*(p + 1)])->addRegOperands(Inst, 1);\n"
+ << " break;\n"
+ << " case CVT_Tied:\n"
+ << " Inst.addOperand(Inst.getOperand(*(p + 1)));\n"
+ << " break;\n";
+
+ std::string OperandFnBody;
+ raw_string_ostream OpOS(OperandFnBody);
+ // Start the operand number lookup function.
+ OpOS << "void " << Target.getName() << ClassName << "::\n"
+ << "convertToMapAndConstraints(unsigned Kind,\n";
+ OpOS.indent(27);
+ OpOS << "const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {\n"
+ << " assert(Kind < CVT_NUM_SIGNATURES && \"Invalid signature!\");\n"
+ << " unsigned NumMCOperands = 0;\n"
+ << " const uint8_t *Converter = ConversionTable[Kind];\n"
+ << " for (const uint8_t *p = Converter; *p; p+= 2) {\n"
+ << " switch (*p) {\n"
+ << " default: llvm_unreachable(\"invalid conversion entry!\");\n"
+ << " case CVT_Reg:\n"
+ << " Operands[*(p + 1)]->setMCOperandNum(NumMCOperands);\n"
+ << " Operands[*(p + 1)]->setConstraint(\"r\");\n"
+ << " ++NumMCOperands;\n"
+ << " break;\n"
+ << " case CVT_Tied:\n"
+ << " ++NumMCOperands;\n"
+ << " break;\n";
+
+ // Pre-populate the operand conversion kinds with the standard always
+ // available entries.
+ OperandConversionKinds.insert("CVT_Done");
+ OperandConversionKinds.insert("CVT_Reg");
+ OperandConversionKinds.insert("CVT_Tied");
+ enum { CVT_Done, CVT_Reg, CVT_Tied };
+
for (std::vector<MatchableInfo*>::const_iterator it = Infos.begin(),
ie = Infos.end(); it != ie; ++it) {
MatchableInfo &II = **it;
II.ConversionFnKind = Signature;
// Check if we have already generated this signature.
- if (!GeneratedFns.insert(Signature).second)
+ if (!InstructionConversionKinds.insert(Signature))
continue;
- // If not, emit it now. Add to the enum list.
- OS << " " << Signature << ",\n";
+ // Remember this converter for the kind enum.
+ unsigned KindID = OperandConversionKinds.size();
+ OperandConversionKinds.insert("CVT_" +
+ getEnumNameForToken(AsmMatchConverter));
- CvtOS << " case " << Signature << ":\n";
- CvtOS << " return " << AsmMatchConverter
- << "(Inst, Opcode, Operands);\n";
+ // Add the converter row for this instruction.
+ ConversionTable.push_back(std::vector<uint8_t>());
+ ConversionTable.back().push_back(KindID);
+ ConversionTable.back().push_back(CVT_Done);
+
+ // Add the handler to the conversion driver function.
+ CvtOS << " case CVT_"
+ << getEnumNameForToken(AsmMatchConverter) << ":\n"
+ << " " << AsmMatchConverter << "(Inst, Operands);\n"
+ << " break;\n";
+
+ // FIXME: Handle the operand number lookup for custom match functions.
continue;
}
// Build the conversion function signature.
std::string Signature = "Convert";
- std::string CaseBody;
- raw_string_ostream CaseOS(CaseBody);
+
+ std::vector<uint8_t> ConversionRow;
// Compute the convert enum and the case body.
+ 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];
// Registers are always converted the same, don't duplicate the
// conversion function based on them.
Signature += "__";
- if (Op.Class->isRegisterClass())
- Signature += "Reg";
- else
- Signature += Op.Class->ClassName;
+ std::string Class;
+ Class = Op.Class->isRegisterClass() ? "Reg" : Op.Class->ClassName;
+ Signature += Class;
Signature += utostr(OpInfo.MINumOperands);
Signature += "_" + itostr(OpInfo.AsmOperandNum);
- CaseOS << " ((" << TargetOperandClass << "*)Operands["
- << (OpInfo.AsmOperandNum+1) << "])->" << Op.Class->RenderMethod
- << "(Inst, " << OpInfo.MINumOperands << ");\n";
+ // Add the conversion kind, if necessary, and get the associated ID
+ // the index of its entry in the vector).
+ std::string Name = "CVT_" + (Op.Class->isRegisterClass() ? "Reg" :
+ Op.Class->RenderMethod);
+ Name = getEnumNameForToken(Name);
+
+ bool IsNewConverter = false;
+ unsigned ID = getConverterOperandID(Name, OperandConversionKinds,
+ IsNewConverter);
+
+ // Add the operand entry to the instruction kind conversion row.
+ ConversionRow.push_back(ID);
+ ConversionRow.push_back(OpInfo.AsmOperandNum + 1);
+
+ if (!IsNewConverter)
+ break;
+
+ // This is a new operand kind. Add a handler for it to the
+ // converter driver.
+ CvtOS << " case " << Name << ":\n"
+ << " static_cast<" << TargetOperandClass
+ << "*>(Operands[*(p + 1)])->"
+ << Op.Class->RenderMethod << "(Inst, " << OpInfo.MINumOperands
+ << ");\n"
+ << " break;\n";
+
+ // Add a handler for the operand number lookup.
+ OpOS << " case " << Name << ":\n"
+ << " Operands[*(p + 1)]->setMCOperandNum(NumMCOperands);\n";
+
+ if (Op.Class->isRegisterClass())
+ OpOS << " Operands[*(p + 1)]->setConstraint(\"r\");\n";
+ else
+ OpOS << " Operands[*(p + 1)]->setConstraint(\"m\");\n";
+ OpOS << " NumMCOperands += " << OpInfo.MINumOperands << ";\n"
+ << " break;\n";
break;
}
-
case MatchableInfo::ResOperand::TiedOperand: {
// If this operand is tied to a previous one, just copy the MCInst
// operand from the earlier one.We can only tie single MCOperand values.
- //assert(OpInfo.MINumOperands == 1 && "Not a singular MCOperand");
+ assert(OpInfo.MINumOperands == 1 && "Not a singular MCOperand");
unsigned TiedOp = OpInfo.TiedOperandNum;
assert(i > TiedOp && "Tied operand precedes its target!");
- CaseOS << " Inst.addOperand(Inst.getOperand(" << TiedOp << "));\n";
Signature += "__Tie" + utostr(TiedOp);
+ ConversionRow.push_back(CVT_Tied);
+ ConversionRow.push_back(TiedOp);
break;
}
case MatchableInfo::ResOperand::ImmOperand: {
int64_t Val = OpInfo.ImmVal;
- CaseOS << " Inst.addOperand(MCOperand::CreateImm(" << Val << "));\n";
- Signature += "__imm" + itostr(Val);
+ std::string Ty = "imm_" + itostr(Val);
+ Signature += "__" + Ty;
+
+ std::string Name = "CVT_" + Ty;
+ bool IsNewConverter = false;
+ unsigned ID = getConverterOperandID(Name, OperandConversionKinds,
+ IsNewConverter);
+ // Add the operand entry to the instruction kind conversion row.
+ ConversionRow.push_back(ID);
+ ConversionRow.push_back(0);
+
+ if (!IsNewConverter)
+ break;
+
+ CvtOS << " case " << Name << ":\n"
+ << " Inst.addOperand(MCOperand::CreateImm(" << Val << "));\n"
+ << " break;\n";
+
+ OpOS << " case " << Name << ":\n"
+ << " Operands[*(p + 1)]->setMCOperandNum(NumMCOperands);\n"
+ << " Operands[*(p + 1)]->setConstraint(\"\");\n"
+ << " ++NumMCOperands;\n"
+ << " break;\n";
break;
}
case MatchableInfo::ResOperand::RegOperand: {
+ std::string Reg, Name;
if (OpInfo.Register == 0) {
- CaseOS << " Inst.addOperand(MCOperand::CreateReg(0));\n";
- Signature += "__reg0";
+ Name = "reg0";
+ Reg = "0";
} else {
- std::string N = getQualifiedName(OpInfo.Register);
- CaseOS << " Inst.addOperand(MCOperand::CreateReg(" << N << "));\n";
- Signature += "__reg" + OpInfo.Register->getName();
+ Reg = getQualifiedName(OpInfo.Register);
+ Name = "reg" + OpInfo.Register->getName();
}
+ Signature += "__" + Name;
+ Name = "CVT_" + Name;
+ bool IsNewConverter = false;
+ unsigned ID = getConverterOperandID(Name, OperandConversionKinds,
+ IsNewConverter);
+ // Add the operand entry to the instruction kind conversion row.
+ ConversionRow.push_back(ID);
+ ConversionRow.push_back(0);
+
+ if (!IsNewConverter)
+ break;
+ CvtOS << " case " << Name << ":\n"
+ << " Inst.addOperand(MCOperand::CreateReg(" << Reg << "));\n"
+ << " break;\n";
+
+ OpOS << " case " << Name << ":\n"
+ << " Operands[*(p + 1)]->setMCOperandNum(NumMCOperands);\n"
+ << " Operands[*(p + 1)]->setConstraint(\"m\");\n"
+ << " ++NumMCOperands;\n"
+ << " break;\n";
}
}
}
+ // If there were no operands, add to the signature to that effect
+ if (Signature == "Convert")
+ Signature += "_NoOperands";
+
II.ConversionFnKind = Signature;
- // Check if we have already generated this signature.
- if (!GeneratedFns.insert(Signature).second)
+ // Save the signature. If we already have it, don't add a new row
+ // to the table.
+ if (!InstructionConversionKinds.insert(Signature))
continue;
- // If not, emit it now. Add to the enum list.
- OS << " " << Signature << ",\n";
-
- CvtOS << " case " << Signature << ":\n";
- CvtOS << CaseOS.str();
- CvtOS << " return true;\n";
+ // Add the row to the table.
+ ConversionTable.push_back(ConversionRow);
}
- // Finish the convert function.
+ // Finish up the converter driver function.
+ CvtOS << " }\n }\n}\n\n";
+
+ // Finish up the operand number lookup function.
+ OpOS << " }\n }\n}\n\n";
+
+ OS << "namespace {\n";
+
+ // Output the operand conversion kind enum.
+ OS << "enum OperatorConversionKind {\n";
+ for (unsigned i = 0, e = OperandConversionKinds.size(); i != e; ++i)
+ OS << " " << OperandConversionKinds[i] << ",\n";
+ OS << " CVT_NUM_CONVERTERS\n";
+ OS << "};\n\n";
+
+ // Output the instruction conversion kind enum.
+ OS << "enum InstructionConversionKind {\n";
+ for (SetVector<std::string>::const_iterator
+ i = InstructionConversionKinds.begin(),
+ e = InstructionConversionKinds.end(); i != e; ++i)
+ OS << " " << *i << ",\n";
+ OS << " CVT_NUM_SIGNATURES\n";
+ OS << "};\n\n";
- CvtOS << " }\n";
- CvtOS << " return false;\n";
- CvtOS << "}\n\n";
- // Finish the enum, and drop the convert function after it.
+ OS << "} // end anonymous namespace\n\n";
+
+ // Output the conversion table.
+ OS << "static const uint8_t ConversionTable[CVT_NUM_SIGNATURES]["
+ << MaxRowLength << "] = {\n";
+
+ for (unsigned Row = 0, ERow = ConversionTable.size(); Row != ERow; ++Row) {
+ assert(ConversionTable[Row].size() % 2 == 0 && "bad conversion row!");
+ OS << " // " << InstructionConversionKinds[Row] << "\n";
+ OS << " { ";
+ for (unsigned i = 0, e = ConversionTable[Row].size(); i != e; i += 2)
+ OS << OperandConversionKinds[ConversionTable[Row][i]] << ", "
+ << (unsigned)(ConversionTable[Row][i + 1]) << ", ";
+ OS << "CVT_Done },\n";
+ }
- OS << " NumConversionVariants\n";
OS << "};\n\n";
+ // Spit out the conversion driver function.
OS << CvtOS.str();
+
+ // Spit out the operand number lookup function.
+ OS << OpOS.str();
}
/// emitMatchClassEnumeration - Emit the enumeration for match class kinds.
/// emitValidateOperandClass - Emit the function to validate an operand class.
static void emitValidateOperandClass(AsmMatcherInfo &Info,
raw_ostream &OS) {
- OS << "static bool validateOperandClass(MCParsedAsmOperand *GOp, "
+ OS << "static unsigned validateOperandClass(MCParsedAsmOperand *GOp, "
<< "MatchClassKind Kind) {\n";
OS << " " << Info.Target.getName() << "Operand &Operand = *("
<< Info.Target.getName() << "Operand*)GOp;\n";
// The InvalidMatchClass is not to match any operand.
OS << " if (Kind == InvalidMatchClass)\n";
- OS << " return false;\n\n";
+ OS << " return MCTargetAsmParser::Match_InvalidOperand;\n\n";
// Check for Token operands first.
+ // FIXME: Use a more specific diagnostic type.
OS << " if (Operand.isToken())\n";
- OS << " return isSubclass(matchTokenString(Operand.getToken()), Kind);"
- << "\n\n";
-
- // Check for register operands, including sub-classes.
- OS << " if (Operand.isReg()) {\n";
- OS << " MatchClassKind OpKind;\n";
- OS << " switch (Operand.getReg()) {\n";
- OS << " default: OpKind = InvalidMatchClass; break;\n";
- for (std::map<Record*, ClassInfo*>::iterator
- it = Info.RegisterClasses.begin(), ie = Info.RegisterClasses.end();
- it != ie; ++it)
- OS << " case " << Info.Target.getName() << "::"
- << it->first->getName() << ": OpKind = " << it->second->Name
- << "; break;\n";
- OS << " }\n";
- OS << " return isSubclass(OpKind, Kind);\n";
- OS << " }\n\n";
+ OS << " return isSubclass(matchTokenString(Operand.getToken()), Kind) ?\n"
+ << " MCTargetAsmParser::Match_Success :\n"
+ << " MCTargetAsmParser::Match_InvalidOperand;\n\n";
// Check the user classes. We don't care what order since we're only
// actually matching against one of them.
continue;
OS << " // '" << CI.ClassName << "' class\n";
- OS << " if (Kind == " << CI.Name
- << " && Operand." << CI.PredicateMethod << "()) {\n";
- OS << " return true;\n";
+ OS << " if (Kind == " << CI.Name << ") {\n";
+ OS << " if (Operand." << CI.PredicateMethod << "())\n";
+ OS << " return MCTargetAsmParser::Match_Success;\n";
+ if (!CI.DiagnosticType.empty())
+ OS << " return " << Info.Target.getName() << "AsmParser::Match_"
+ << CI.DiagnosticType << ";\n";
OS << " }\n\n";
}
- OS << " return false;\n";
+ // Check for register operands, including sub-classes.
+ OS << " if (Operand.isReg()) {\n";
+ OS << " MatchClassKind OpKind;\n";
+ OS << " switch (Operand.getReg()) {\n";
+ OS << " default: OpKind = InvalidMatchClass; break;\n";
+ for (AsmMatcherInfo::RegisterClassesTy::iterator
+ it = Info.RegisterClasses.begin(), ie = Info.RegisterClasses.end();
+ it != ie; ++it)
+ OS << " case " << Info.Target.getName() << "::"
+ << it->first->getName() << ": OpKind = " << it->second->Name
+ << "; break;\n";
+ OS << " }\n";
+ OS << " return isSubclass(OpKind, Kind) ? "
+ << "MCTargetAsmParser::Match_Success :\n "
+ << " MCTargetAsmParser::Match_InvalidOperand;\n }\n\n";
+
+ // Generic fallthrough match failure case for operands that don't have
+ // specialized diagnostic types.
+ OS << " return MCTargetAsmParser::Match_InvalidOperand;\n";
OS << "}\n\n";
}
static void emitIsSubclass(CodeGenTarget &Target,
std::vector<ClassInfo*> &Infos,
raw_ostream &OS) {
- OS << "/// isSubclass - Compute whether \\arg A is a subclass of \\arg B.\n";
+ OS << "/// isSubclass - Compute whether \\p A is a subclass of \\p B.\n";
OS << "static bool isSubclass(MatchClassKind A, MatchClassKind B) {\n";
OS << " if (A == B)\n";
OS << " return true;\n\n";
OS << "};\n\n";
}
+/// emitOperandDiagnosticTypes - Emit the operand matching diagnostic types.
+static void emitOperandDiagnosticTypes(AsmMatcherInfo &Info, raw_ostream &OS) {
+ // Get the set of diagnostic types from all of the operand classes.
+ std::set<StringRef> Types;
+ for (std::map<Record*, ClassInfo*>::const_iterator
+ I = Info.AsmOperandClasses.begin(),
+ E = Info.AsmOperandClasses.end(); I != E; ++I) {
+ if (!I->second->DiagnosticType.empty())
+ Types.insert(I->second->DiagnosticType);
+ }
+
+ if (Types.empty()) return;
+
+ // Now emit the enum entries.
+ for (std::set<StringRef>::const_iterator I = Types.begin(), E = Types.end();
+ I != E; ++I)
+ OS << " Match_" << *I << ",\n";
+ OS << " END_OPERAND_DIAGNOSTIC_TYPES\n";
+}
+
/// emitGetSubtargetFeatureName - Emit the helper function to get the
/// user-level name for a subtarget feature.
static void emitGetSubtargetFeatureName(AsmMatcherInfo &Info, raw_ostream &OS) {
SubtargetFeatureInfo *F = Info.getSubtargetFeature(ReqFeatures[i]);
if (F == 0)
- throw TGError(R->getLoc(), "Predicate '" + ReqFeatures[i]->getName() +
+ PrintFatalError(R->getLoc(), "Predicate '" + ReqFeatures[i]->getName() +
"' is not marked as an AssemblerPredicate!");
if (NumFeatures)
return Result;
}
-/// emitMnemonicAliases - If the target has any MnemonicAlias<> definitions,
-/// emit a function for them and return true, otherwise return false.
-static bool emitMnemonicAliases(raw_ostream &OS, const AsmMatcherInfo &Info) {
- // Ignore aliases when match-prefix is set.
- if (!MatchPrefix.empty())
- return false;
-
- std::vector<Record*> Aliases =
- Info.getRecords().getAllDerivedDefinitions("MnemonicAlias");
- if (Aliases.empty()) return false;
-
- OS << "static void applyMnemonicAliases(StringRef &Mnemonic, "
- "unsigned Features) {\n";
-
+static void emitMnemonicAliasVariant(raw_ostream &OS,const AsmMatcherInfo &Info,
+ std::vector<Record*> &Aliases,
+ unsigned Indent = 0,
+ StringRef AsmParserVariantName = StringRef()){
// Keep track of all the aliases from a mnemonic. Use an std::map so that the
// iteration order of the map is stable.
std::map<std::string, std::vector<Record*> > AliasesFromMnemonic;
for (unsigned i = 0, e = Aliases.size(); i != e; ++i) {
Record *R = Aliases[i];
+ // FIXME: Allow AssemblerVariantName to be a comma separated list.
+ std::string AsmVariantName = R->getValueAsString("AsmVariantName");
+ if (AsmVariantName != AsmParserVariantName)
+ continue;
AliasesFromMnemonic[R->getValueAsString("FromMnemonic")].push_back(R);
}
-
+ if (AliasesFromMnemonic.empty())
+ return;
+
// Process each alias a "from" mnemonic at a time, building the code executed
// by the string remapper.
std::vector<StringMatcher::StringPair> Cases;
// We can't have two aliases from the same mnemonic with no predicate.
PrintError(ToVec[AliasWithNoPredicate]->getLoc(),
"two MnemonicAliases with the same 'from' mnemonic!");
- throw TGError(R->getLoc(), "this is the other MnemonicAlias.");
+ PrintFatalError(R->getLoc(), "this is the other MnemonicAlias.");
}
AliasWithNoPredicate = i;
continue;
}
if (R->getValueAsString("ToMnemonic") == I->first)
- throw TGError(R->getLoc(), "MnemonicAlias to the same string");
+ PrintFatalError(R->getLoc(), "MnemonicAlias to the same string");
if (!MatchCode.empty())
MatchCode += "else ";
Cases.push_back(std::make_pair(I->first, MatchCode));
}
+ StringMatcher("Mnemonic", Cases, OS).Emit(Indent);
+}
+
+/// emitMnemonicAliases - If the target has any MnemonicAlias<> definitions,
+/// emit a function for them and return true, otherwise return false.
+static bool emitMnemonicAliases(raw_ostream &OS, const AsmMatcherInfo &Info,
+ CodeGenTarget &Target) {
+ // Ignore aliases when match-prefix is set.
+ if (!MatchPrefix.empty())
+ return false;
+
+ std::vector<Record*> Aliases =
+ Info.getRecords().getAllDerivedDefinitions("MnemonicAlias");
+ if (Aliases.empty()) return false;
+
+ OS << "static void applyMnemonicAliases(StringRef &Mnemonic, "
+ "unsigned Features, unsigned VariantID) {\n";
+ OS << " switch (VariantID) {\n";
+ unsigned VariantCount = Target.getAsmParserVariantCount();
+ for (unsigned VC = 0; VC != VariantCount; ++VC) {
+ Record *AsmVariant = Target.getAsmParserVariant(VC);
+ int AsmParserVariantNo = AsmVariant->getValueAsInt("Variant");
+ std::string AsmParserVariantName = AsmVariant->getValueAsString("Name");
+ OS << " case " << AsmParserVariantNo << ":\n";
+ emitMnemonicAliasVariant(OS, Info, Aliases, /*Indent=*/2,
+ AsmParserVariantName);
+ OS << " break;\n";
+ }
+ OS << " }\n";
+
+ // Emit aliases that apply to all variants.
+ emitMnemonicAliasVariant(OS, Info, Aliases);
- StringMatcher("Mnemonic", Cases, OS).Emit();
OS << "}\n\n";
return true;
}
static void emitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
- const AsmMatcherInfo &Info, StringRef ClassName) {
+ const AsmMatcherInfo &Info, StringRef ClassName,
+ StringToOffsetTable &StringTable,
+ unsigned MaxMnemonicIndex) {
+ unsigned MaxMask = 0;
+ for (std::vector<OperandMatchEntry>::const_iterator it =
+ Info.OperandMatchInfo.begin(), ie = Info.OperandMatchInfo.end();
+ it != ie; ++it) {
+ MaxMask |= it->OperandMask;
+ }
+
// Emit the static custom operand parsing table;
OS << "namespace {\n";
OS << " struct OperandMatchEntry {\n";
- OS << " static const char *const MnemonicTable;\n";
- OS << " uint32_t OperandMask;\n";
- OS << " uint32_t Mnemonic;\n";
OS << " " << getMinimalTypeForRange(1ULL << Info.SubtargetFeatures.size())
<< " RequiredFeatures;\n";
+ OS << " " << getMinimalTypeForRange(MaxMnemonicIndex)
+ << " Mnemonic;\n";
OS << " " << getMinimalTypeForRange(Info.Classes.size())
- << " Class;\n\n";
+ << " Class;\n";
+ OS << " " << getMinimalTypeForRange(MaxMask)
+ << " OperandMask;\n\n";
OS << " StringRef getMnemonic() const {\n";
OS << " return StringRef(MnemonicTable + Mnemonic + 1,\n";
OS << " MnemonicTable[Mnemonic]);\n";
OS << "} // end anonymous namespace.\n\n";
- StringToOffsetTable StringTable;
-
OS << "static const OperandMatchEntry OperandMatchTable["
<< Info.OperandMatchInfo.size() << "] = {\n";
const OperandMatchEntry &OMI = *it;
const MatchableInfo &II = *OMI.MI;
- OS << " { " << OMI.OperandMask;
+ OS << " { ";
+
+ // Write the required features mask.
+ if (!II.RequiredFeatures.empty()) {
+ for (unsigned i = 0, e = II.RequiredFeatures.size(); i != e; ++i) {
+ if (i) OS << "|";
+ OS << II.RequiredFeatures[i]->getEnumName();
+ }
+ } else
+ OS << "0";
+
+ // Store a pascal-style length byte in the mnemonic.
+ std::string LenMnemonic = char(II.Mnemonic.size()) + II.Mnemonic.str();
+ OS << ", " << StringTable.GetOrAddStringOffset(LenMnemonic, false)
+ << " /* " << II.Mnemonic << " */, ";
+ OS << OMI.CI->Name;
+
+ OS << ", " << OMI.OperandMask;
OS << " /* ";
bool printComma = false;
for (int i = 0, e = 31; i !=e; ++i)
}
OS << " */";
- // Store a pascal-style length byte in the mnemonic.
- std::string LenMnemonic = char(II.Mnemonic.size()) + II.Mnemonic.str();
- OS << ", " << StringTable.GetOrAddStringOffset(LenMnemonic, false)
- << " /* " << II.Mnemonic << " */, ";
-
- // Write the required features mask.
- if (!II.RequiredFeatures.empty()) {
- for (unsigned i = 0, e = II.RequiredFeatures.size(); i != e; ++i) {
- if (i) OS << "|";
- OS << II.RequiredFeatures[i]->getEnumName();
- }
- } else
- OS << "0";
-
- OS << ", " << OMI.CI->Name;
-
OS << " },\n";
}
OS << "};\n\n";
- OS << "const char *const OperandMatchEntry::MnemonicTable =\n";
- StringTable.EmitString(OS);
- OS << ";\n\n";
-
// Emit the operand class switch to call the correct custom parser for
// the found operand class.
OS << Target.getName() << ClassName << "::OperandMatchResultTy "
// Write the output.
- EmitSourceFileHeader("Assembly Matcher Source Fragment", OS);
-
// Information for the class declaration.
OS << "\n#ifdef GET_ASSEMBLER_HEADER\n";
OS << "#undef GET_ASSEMBLER_HEADER\n";
OS << " // This should be included into the middle of the declaration of\n";
OS << " // your subclasses implementation of MCTargetAsmParser.\n";
OS << " unsigned ComputeAvailableFeatures(uint64_t FeatureBits) const;\n";
- OS << " bool ConvertToMCInst(unsigned Kind, MCInst &Inst, "
+ OS << " void convertToMCInst(unsigned Kind, MCInst &Inst, "
<< "unsigned Opcode,\n"
<< " const SmallVectorImpl<MCParsedAsmOperand*> "
<< "&Operands);\n";
- OS << " bool MnemonicIsValid(StringRef Mnemonic);\n";
+ OS << " void convertToMapAndConstraints(unsigned Kind,\n ";
+ OS << " const SmallVectorImpl<MCParsedAsmOperand*> &Operands);\n";
+ OS << " bool mnemonicIsValid(StringRef Mnemonic);\n";
OS << " unsigned MatchInstructionImpl(\n";
- OS << " const SmallVectorImpl<MCParsedAsmOperand*> &Operands,\n";
- OS << " MCInst &Inst, unsigned &ErrorInfo, unsigned VariantID = 0);\n";
+ OS.indent(27);
+ OS << "const SmallVectorImpl<MCParsedAsmOperand*> &Operands,\n"
+ << " MCInst &Inst,\n"
+ << " unsigned &ErrorInfo,"
+ << " bool matchingInlineAsm,\n"
+ << " unsigned VariantID = 0);\n";
if (Info.OperandMatchInfo.size()) {
OS << "\n enum OperandMatchResultTy {\n";
OS << "#endif // GET_ASSEMBLER_HEADER_INFO\n\n";
+ // Emit the operand match diagnostic enum names.
+ OS << "\n#ifdef GET_OPERAND_DIAGNOSTIC_TYPES\n";
+ OS << "#undef GET_OPERAND_DIAGNOSTIC_TYPES\n\n";
+ emitOperandDiagnosticTypes(Info, OS);
+ OS << "#endif // GET_OPERAND_DIAGNOSTIC_TYPES\n\n";
+
+
OS << "\n#ifdef GET_REGISTER_MATCHER\n";
OS << "#undef GET_REGISTER_MATCHER\n\n";
emitSubtargetFeatureFlagEnumeration(Info, OS);
// Emit the function to match a register name to number.
- emitMatchRegisterName(Target, AsmParser, OS);
+ // This should be omitted for Mips target
+ if (AsmParser->getValueAsBit("ShouldEmitMatchRegisterName"))
+ emitMatchRegisterName(Target, AsmParser, OS);
OS << "#endif // GET_REGISTER_MATCHER\n\n";
OS << "#undef GET_MATCHER_IMPLEMENTATION\n\n";
// Generate the function that remaps for mnemonic aliases.
- bool HasMnemonicAliases = emitMnemonicAliases(OS, Info);
+ bool HasMnemonicAliases = emitMnemonicAliases(OS, Info, Target);
- // Generate the unified function to convert operands into an MCInst.
- emitConvertToMCInst(Target, ClassName, Info.Matchables, OS);
+ // Generate the convertToMCInst function to convert operands into an MCInst.
+ // Also, generate the convertToMapAndConstraints function for MS-style inline
+ // assembly. The latter doesn't actually generate a MCInst.
+ emitConvertFuncs(Target, ClassName, Info.Matchables, OS);
// Emit the enumeration for classes which participate in matching.
emitMatchClassEnumeration(Target, Info.Classes, OS);
emitComputeAvailableFeatures(Info, OS);
+ StringToOffsetTable StringTable;
+
size_t MaxNumOperands = 0;
+ unsigned MaxMnemonicIndex = 0;
for (std::vector<MatchableInfo*>::const_iterator it =
Info.Matchables.begin(), ie = Info.Matchables.end();
- it != ie; ++it)
- MaxNumOperands = std::max(MaxNumOperands, (*it)->AsmOperands.size());
+ it != ie; ++it) {
+ MatchableInfo &II = **it;
+ MaxNumOperands = std::max(MaxNumOperands, II.AsmOperands.size());
+
+ // Store a pascal-style length byte in the mnemonic.
+ std::string LenMnemonic = char(II.Mnemonic.size()) + II.Mnemonic.str();
+ MaxMnemonicIndex = std::max(MaxMnemonicIndex,
+ StringTable.GetOrAddStringOffset(LenMnemonic, false));
+ }
+
+ OS << "static const char *const MnemonicTable =\n";
+ StringTable.EmitString(OS);
+ OS << ";\n\n";
// Emit the static match table; unused classes get initalized to 0 which is
// guaranteed to be InvalidMatchClass.
// following the mnemonic.
OS << "namespace {\n";
OS << " struct MatchEntry {\n";
- OS << " static const char *const MnemonicTable;\n";
- OS << " uint32_t Mnemonic;\n";
+ OS << " " << getMinimalTypeForRange(MaxMnemonicIndex)
+ << " Mnemonic;\n";
OS << " uint16_t Opcode;\n";
OS << " " << getMinimalTypeForRange(Info.Matchables.size())
<< " ConvertFn;\n";
OS << "} // end anonymous namespace.\n\n";
- StringToOffsetTable StringTable;
-
OS << "static const MatchEntry MatchTable["
<< Info.Matchables.size() << "] = {\n";
OS << "};\n\n";
- OS << "const char *const MatchEntry::MnemonicTable =\n";
- StringTable.EmitString(OS);
- OS << ";\n\n";
-
// A method to determine if a mnemonic is in the list.
OS << "bool " << Target.getName() << ClassName << "::\n"
- << "MnemonicIsValid(StringRef Mnemonic) {\n";
+ << "mnemonicIsValid(StringRef Mnemonic) {\n";
OS << " // Search the table.\n";
OS << " std::pair<const MatchEntry*, const MatchEntry*> MnemonicRange =\n";
OS << " std::equal_range(MatchTable, MatchTable+"
<< Target.getName() << ClassName << "::\n"
<< "MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>"
<< " &Operands,\n";
- OS << " MCInst &Inst, unsigned &ErrorInfo, ";
- OS << "unsigned VariantID) {\n";
+ OS << " MCInst &Inst,\n"
+ << "unsigned &ErrorInfo, bool matchingInlineAsm, unsigned VariantID) {\n";
+
+ OS << " // Eliminate obvious mismatches.\n";
+ OS << " if (Operands.size() > " << (MaxNumOperands+1) << ") {\n";
+ OS << " ErrorInfo = " << (MaxNumOperands+1) << ";\n";
+ OS << " return Match_InvalidOperand;\n";
+ OS << " }\n\n";
// Emit code to get the available features.
OS << " // Get the current feature set.\n";
if (HasMnemonicAliases) {
OS << " // Process all MnemonicAliases to remap the mnemonic.\n";
- OS << " // FIXME : Add an entry in AsmParserVariant to check this.\n";
- OS << " if (!VariantID)\n";
- OS << " applyMnemonicAliases(Mnemonic, AvailableFeatures);\n\n";
+ OS << " applyMnemonicAliases(Mnemonic, AvailableFeatures, VariantID);\n\n";
}
// Emit code to compute the class list for this operand vector.
- OS << " // Eliminate obvious mismatches.\n";
- OS << " if (Operands.size() > " << (MaxNumOperands+1) << ") {\n";
- OS << " ErrorInfo = " << (MaxNumOperands+1) << ";\n";
- OS << " return Match_InvalidOperand;\n";
- OS << " }\n\n";
-
OS << " // Some state to try to produce better error messages.\n";
OS << " bool HadMatchOtherThanFeatures = false;\n";
OS << " bool HadMatchOtherThanPredicate = false;\n";
OS << " unsigned RetCode = Match_InvalidOperand;\n";
+ OS << " unsigned MissingFeatures = ~0U;\n";
OS << " // Set ErrorInfo to the operand that mismatches if it is\n";
OS << " // wrong for all instances of the instruction.\n";
OS << " ErrorInfo = ~0U;\n";
OS << " for (unsigned i = 0; i != " << MaxNumOperands << "; ++i) {\n";
OS << " if (i + 1 >= Operands.size()) {\n";
OS << " OperandsValid = (it->Classes[i] == " <<"InvalidMatchClass);\n";
+ OS << " if (!OperandsValid) ErrorInfo = i + 1;\n";
OS << " break;\n";
OS << " }\n";
- OS << " if (validateOperandClass(Operands[i+1], "
- "(MatchClassKind)it->Classes[i]))\n";
+ OS << " unsigned Diag = validateOperandClass(Operands[i+1],\n";
+ OS.indent(43);
+ OS << "(MatchClassKind)it->Classes[i]);\n";
+ OS << " if (Diag == Match_Success)\n";
OS << " continue;\n";
+ OS << " // If the generic handler indicates an invalid operand\n";
+ OS << " // failure, check for a special case.\n";
+ OS << " if (Diag == Match_InvalidOperand) {\n";
+ OS << " Diag = validateTargetOperandClass(Operands[i+1],\n";
+ OS.indent(43);
+ OS << "(MatchClassKind)it->Classes[i]);\n";
+ OS << " if (Diag == Match_Success)\n";
+ OS << " continue;\n";
+ OS << " }\n";
OS << " // If this operand is broken for all of the instances of this\n";
OS << " // mnemonic, keep track of it so we can report loc info.\n";
- OS << " if (it == MnemonicRange.first || ErrorInfo <= i+1)\n";
+ OS << " // If we already had a match that only failed due to a\n";
+ OS << " // target predicate, that diagnostic is preferred.\n";
+ OS << " if (!HadMatchOtherThanPredicate &&\n";
+ OS << " (it == MnemonicRange.first || ErrorInfo <= i+1)) {\n";
OS << " ErrorInfo = i+1;\n";
+ OS << " // InvalidOperand is the default. Prefer specificity.\n";
+ OS << " if (Diag != Match_InvalidOperand)\n";
+ OS << " RetCode = Diag;\n";
+ OS << " }\n";
OS << " // Otherwise, just reject this instance of the mnemonic.\n";
OS << " OperandsValid = false;\n";
OS << " break;\n";
OS << " if ((AvailableFeatures & it->RequiredFeatures) "
<< "!= it->RequiredFeatures) {\n";
OS << " HadMatchOtherThanFeatures = true;\n";
- OS << " ErrorInfo = it->RequiredFeatures & ~AvailableFeatures;\n";
+ OS << " unsigned NewMissingFeatures = it->RequiredFeatures & "
+ "~AvailableFeatures;\n";
+ OS << " if (CountPopulation_32(NewMissingFeatures) <=\n"
+ " CountPopulation_32(MissingFeatures))\n";
+ OS << " MissingFeatures = NewMissingFeatures;\n";
OS << " continue;\n";
OS << " }\n";
OS << "\n";
+ OS << " if (matchingInlineAsm) {\n";
+ OS << " Inst.setOpcode(it->Opcode);\n";
+ OS << " convertToMapAndConstraints(it->ConvertFn, Operands);\n";
+ OS << " return Match_Success;\n";
+ OS << " }\n\n";
OS << " // We have selected a definite instruction, convert the parsed\n"
<< " // operands into the appropriate MCInst.\n";
- OS << " if (!ConvertToMCInst(it->ConvertFn, Inst,\n"
- << " it->Opcode, Operands))\n";
- OS << " return Match_ConversionFail;\n";
+ OS << " convertToMCInst(it->ConvertFn, Inst, it->Opcode, Operands);\n";
OS << "\n";
// Verify the instruction with the target-specific match predicate function.
OS << " }\n\n";
OS << " // Okay, we had no match. Try to return a useful error code.\n";
- OS << " if (HadMatchOtherThanPredicate || !HadMatchOtherThanFeatures)";
- OS << " return RetCode;\n";
- OS << " assert(ErrorInfo && \"missing feature(s) but what?!\");";
+ OS << " if (HadMatchOtherThanPredicate || !HadMatchOtherThanFeatures)\n";
+ OS << " return RetCode;\n\n";
+ OS << " // Missing feature matches return which features were missing\n";
+ OS << " ErrorInfo = MissingFeatures;\n";
OS << " return Match_MissingFeature;\n";
OS << "}\n\n";
if (Info.OperandMatchInfo.size())
- emitCustomOperandParsing(OS, Target, Info, ClassName);
+ emitCustomOperandParsing(OS, Target, Info, ClassName, StringTable,
+ MaxMnemonicIndex);
OS << "#endif // GET_MATCHER_IMPLEMENTATION\n\n";
}
+
+namespace llvm {
+
+void EmitAsmMatcher(RecordKeeper &RK, raw_ostream &OS) {
+ emitSourceFileHeader("Assembly Matcher Source Fragment", OS);
+ AsmMatcherEmitter(RK).run(OS);
+}
+
+} // End llvm namespace