std::map<unsigned, std::set<unsigned> > SuperClassMap;
std::map<unsigned, std::set<unsigned> > SuperRegClassMap;
OS << "\n";
-
+
// Emit the sub-register classes for each RegisterClass
for (unsigned rc = 0, e = RegisterClasses.size(); rc != e; ++rc) {
const CodeGenRegisterClass &RC = RegisterClasses[rc];
// Give the register class a legal C name if it's anonymous.
std::string Name = RC.TheDef->getName();
- OS << " // " << Name
- << " Sub-register Classess...\n"
+ OS << " // " << Name
+ << " Sub-register Classes...\n"
<< " static const TargetRegisterClass* const "
<< Name << "SubRegClasses [] = {\n ";
bool Empty = true;
-
+
for (unsigned subrc = 0, subrcMax = RC.SubRegClasses.size();
subrc != subrcMax; ++subrc) {
unsigned rc2 = 0, e2 = RegisterClasses.size();
for (; rc2 != e2; ++rc2) {
const CodeGenRegisterClass &RC2 = RegisterClasses[rc2];
if (RC.SubRegClasses[subrc]->getName() == RC2.getName()) {
- if (!Empty)
+ if (!Empty)
OS << ", ";
OS << "&" << getQualifiedName(RC2.TheDef) << "RegClass";
Empty = false;
-
+
std::map<unsigned, std::set<unsigned> >::iterator SCMI =
SuperRegClassMap.find(rc2);
if (SCMI == SuperRegClassMap.end()) {
- SuperRegClassMap.insert(std::make_pair(rc2, std::set<unsigned>()));
+ SuperRegClassMap.insert(std::make_pair(rc2,
+ std::set<unsigned>()));
SCMI = SuperRegClassMap.find(rc2);
}
SCMI->second.insert(rc);
}
}
if (rc2 == e2)
- throw "Register Class member '" +
- RC.SubRegClasses[subrc]->getName() +
+ throw "Register Class member '" +
+ RC.SubRegClasses[subrc]->getName() +
"' is not a valid RegisterClass!";
}
OS << (!Empty ? ", " : "") << "NULL";
OS << "\n };\n\n";
}
-
+
// Emit the super-register classes for each RegisterClass
for (unsigned rc = 0, e = RegisterClasses.size(); rc != e; ++rc) {
const CodeGenRegisterClass &RC = RegisterClasses[rc];
// Give the register class a legal C name if it's anonymous.
std::string Name = RC.TheDef->getName();
- OS << " // " << Name
- << " Super-register Classess...\n"
+ OS << " // " << Name
+ << " Super-register Classes...\n"
<< " static const TargetRegisterClass* const "
<< Name << "SuperRegClasses [] = {\n ";
for (std::set<unsigned>::iterator II = I->second.begin(),
EE = I->second.end(); II != EE; ++II) {
const CodeGenRegisterClass &RC2 = RegisterClasses[*II];
- if (!Empty)
+ if (!Empty)
OS << ", ";
OS << "&" << getQualifiedName(RC2.TheDef) << "RegClass";
- Empty = false;
+ Empty = false;
}
}
OS << RC.getName() << "Class::" << RC.getName()
<< "Class() : TargetRegisterClass("
<< RC.getName() + "RegClassID" << ", "
+ << '\"' << RC.getName() << "\", "
<< RC.getName() + "VTs" << ", "
<< RC.getName() + "Subclasses" << ", "
<< RC.getName() + "Superclasses" << ", "
std::map<Record*, std::set<Record*>, LessRecord> RegisterSuperRegs;
std::map<Record*, std::set<Record*>, LessRecord> RegisterAliases;
std::map<Record*, std::vector<std::pair<int, Record*> > > SubRegVectors;
- typedef std::map<Record*, std::vector<int>, LessRecord> DwarfRegNumsMapTy;
+ typedef std::map<Record*, std::vector<int64_t>, LessRecord> DwarfRegNumsMapTy;
DwarfRegNumsMapTy DwarfRegNums;
const std::vector<CodeGenRegister> &Regs = Target.getRegisters();
delete [] SubregHashTable;
+
+ // Print the SuperregHashTable, a simple quadratically probed
+ // hash table for determining if a register is a super-register
+ // of another register.
+ unsigned NumSupRegs = 0;
+ RegNo.clear();
+ for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
+ RegNo[Regs[i].TheDef] = i;
+ NumSupRegs += RegisterSuperRegs[Regs[i].TheDef].size();
+ }
+
+ unsigned SuperregHashTableSize = 2 * NextPowerOf2(2 * NumSupRegs);
+ unsigned* SuperregHashTable = new unsigned[2 * SuperregHashTableSize];
+ std::fill(SuperregHashTable, SuperregHashTable + 2 * SuperregHashTableSize, ~0U);
+
+ hashMisses = 0;
+
+ for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
+ Record* R = Regs[i].TheDef;
+ for (std::set<Record*>::iterator I = RegisterSuperRegs[R].begin(),
+ E = RegisterSuperRegs[R].end(); I != E; ++I) {
+ Record* RJ = *I;
+ // We have to increase the indices of both registers by one when
+ // computing the hash because, in the generated code, there
+ // will be an extra empty slot at register 0.
+ size_t index = ((i+1) + (RegNo[RJ]+1) * 37) & (SuperregHashTableSize-1);
+ unsigned ProbeAmt = 2;
+ while (SuperregHashTable[index*2] != ~0U &&
+ SuperregHashTable[index*2+1] != ~0U) {
+ index = (index + ProbeAmt) & (SuperregHashTableSize-1);
+ ProbeAmt += 2;
+
+ hashMisses++;
+ }
+
+ SuperregHashTable[index*2] = i;
+ SuperregHashTable[index*2+1] = RegNo[RJ];
+ }
+ }
+
+ OS << "\n\n // Number of hash collisions: " << hashMisses << "\n";
+
+ if (SuperregHashTableSize) {
+ std::string Namespace = Regs[0].TheDef->getValueAsString("Namespace");
+
+ OS << " const unsigned SuperregHashTable[] = { ";
+ for (unsigned i = 0; i < SuperregHashTableSize - 1; ++i) {
+ if (i != 0)
+ // Insert spaces for nice formatting.
+ OS << " ";
+
+ if (SuperregHashTable[2*i] != ~0U) {
+ OS << getQualifiedName(Regs[SuperregHashTable[2*i]].TheDef) << ", "
+ << getQualifiedName(Regs[SuperregHashTable[2*i+1]].TheDef) << ", \n";
+ } else {
+ OS << Namespace << "::NoRegister, " << Namespace << "::NoRegister, \n";
+ }
+ }
+
+ unsigned Idx = SuperregHashTableSize*2-2;
+ if (SuperregHashTable[Idx] != ~0U) {
+ OS << " "
+ << getQualifiedName(Regs[SuperregHashTable[Idx]].TheDef) << ", "
+ << getQualifiedName(Regs[SuperregHashTable[Idx+1]].TheDef) << " };\n";
+ } else {
+ OS << Namespace << "::NoRegister, " << Namespace << "::NoRegister };\n";
+ }
+
+ OS << " const unsigned SuperregHashTableSize = "
+ << SuperregHashTableSize << ";\n";
+ } else {
+ OS << " const unsigned SuperregHashTable[] = { ~0U, ~0U };\n"
+ << " const unsigned SuperregHashTableSize = 1;\n";
+ }
+
+ delete [] SuperregHashTable;
+
+
+ // Print the AliasHashTable, a simple quadratically probed
+ // hash table for determining if a register aliases another register.
+ unsigned NumAliases = 0;
+ RegNo.clear();
+ for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
+ RegNo[Regs[i].TheDef] = i;
+ NumAliases += RegisterAliases[Regs[i].TheDef].size();
+ }
+
+ unsigned AliasesHashTableSize = 2 * NextPowerOf2(2 * NumAliases);
+ unsigned* AliasesHashTable = new unsigned[2 * AliasesHashTableSize];
+ std::fill(AliasesHashTable, AliasesHashTable + 2 * AliasesHashTableSize, ~0U);
+
+ hashMisses = 0;
+
+ for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
+ Record* R = Regs[i].TheDef;
+ for (std::set<Record*>::iterator I = RegisterAliases[R].begin(),
+ E = RegisterAliases[R].end(); I != E; ++I) {
+ Record* RJ = *I;
+ // We have to increase the indices of both registers by one when
+ // computing the hash because, in the generated code, there
+ // will be an extra empty slot at register 0.
+ size_t index = ((i+1) + (RegNo[RJ]+1) * 37) & (AliasesHashTableSize-1);
+ unsigned ProbeAmt = 2;
+ while (AliasesHashTable[index*2] != ~0U &&
+ AliasesHashTable[index*2+1] != ~0U) {
+ index = (index + ProbeAmt) & (AliasesHashTableSize-1);
+ ProbeAmt += 2;
+
+ hashMisses++;
+ }
+
+ AliasesHashTable[index*2] = i;
+ AliasesHashTable[index*2+1] = RegNo[RJ];
+ }
+ }
+
+ OS << "\n\n // Number of hash collisions: " << hashMisses << "\n";
+
+ if (AliasesHashTableSize) {
+ std::string Namespace = Regs[0].TheDef->getValueAsString("Namespace");
+
+ OS << " const unsigned AliasesHashTable[] = { ";
+ for (unsigned i = 0; i < AliasesHashTableSize - 1; ++i) {
+ if (i != 0)
+ // Insert spaces for nice formatting.
+ OS << " ";
+
+ if (AliasesHashTable[2*i] != ~0U) {
+ OS << getQualifiedName(Regs[AliasesHashTable[2*i]].TheDef) << ", "
+ << getQualifiedName(Regs[AliasesHashTable[2*i+1]].TheDef) << ", \n";
+ } else {
+ OS << Namespace << "::NoRegister, " << Namespace << "::NoRegister, \n";
+ }
+ }
+
+ unsigned Idx = AliasesHashTableSize*2-2;
+ if (AliasesHashTable[Idx] != ~0U) {
+ OS << " "
+ << getQualifiedName(Regs[AliasesHashTable[Idx]].TheDef) << ", "
+ << getQualifiedName(Regs[AliasesHashTable[Idx+1]].TheDef) << " };\n";
+ } else {
+ OS << Namespace << "::NoRegister, " << Namespace << "::NoRegister };\n";
+ }
+
+ OS << " const unsigned AliasesHashTableSize = "
+ << AliasesHashTableSize << ";\n";
+ } else {
+ OS << " const unsigned AliasesHashTable[] = { ~0U, ~0U };\n"
+ << " const unsigned AliasesHashTableSize = 1;\n";
+ }
+
+ delete [] AliasesHashTable;
+
if (!RegisterAliases.empty())
OS << "\n\n // Register Alias Sets...\n";
OS << "unsigned " << ClassName
<< "::getSubReg(unsigned RegNo, unsigned Index) const {\n"
<< " switch (RegNo) {\n"
- << " default: abort(); break;\n";
+ << " default:\n return 0;\n";
for (std::map<Record*, std::vector<std::pair<int, Record*> > >::iterator
I = SubRegVectors.begin(), E = SubRegVectors.end(); I != E; ++I) {
OS << " case " << getQualifiedName(I->first) << ":\n";
OS << " switch (Index) {\n";
- OS << " default: abort(); break;\n";
+ OS << " default: return 0;\n";
for (unsigned i = 0, e = I->second.size(); i != e; ++i)
OS << " case " << (I->second)[i].first << ": return "
<< getQualifiedName((I->second)[i].second) << ";\n";
- OS << " }; break;\n";
+ OS << " };\n" << " break;\n";
}
OS << " };\n";
OS << " return 0;\n";
<< " : TargetRegisterInfo(RegisterDescriptors, " << Registers.size()+1
<< ", RegisterClasses, RegisterClasses+" << RegisterClasses.size() <<",\n "
<< " CallFrameSetupOpcode, CallFrameDestroyOpcode,\n"
- << " SubregHashTable, SubregHashTableSize) {\n"
+ << " SubregHashTable, SubregHashTableSize,\n"
+ << " SuperregHashTable, SuperregHashTableSize,\n"
+ << " AliasesHashTable, AliasesHashTableSize) {\n"
<< "}\n\n";
// Collect all information about dwarf register numbers
unsigned maxLength = 0;
for (unsigned i = 0, e = Registers.size(); i != e; ++i) {
Record *Reg = Registers[i].TheDef;
- std::vector<int> RegNums = Reg->getValueAsListOfInts("DwarfNumbers");
+ std::vector<int64_t> RegNums = Reg->getValueAsListOfInts("DwarfNumbers");
maxLength = std::max((size_t)maxLength, RegNums.size());
if (DwarfRegNums.count(Reg))
cerr << "Warning: DWARF numbers for register " << getQualifiedName(Reg)
projects / oota-llvm.git / blobdiff