6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-26 12:20:42 +00:00
Code Issues Projects Releases Wiki Activity

Give full control of subtarget features over to table generated code.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24013 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2005-10-26 17:30:34 +00:00
parent f0c2be4d2b
commit 581a8f79bc
6 changed files with 91 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files
utils/TableGen/SubtargetEmitter.cpp
+62 -14
View File
@@ -45,24 +45,28 @@ struct LessRecordFieldName {
};
//
// FeatureEnumeration - Emit an enumeration of all the subtarget features.
// Enumeration - Emit the specified class as an enumeration.
//
void SubtargetEmitter::FeatureEnumeration(std::ostream &OS) {
RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature");
sort(Features.begin(), Features.end(), LessRecord());
void SubtargetEmitter::Enumeration(std::ostream &OS,
const char *ClassName,
bool isBits) {
RecordList Defs = Records.getAllDerivedDefinitions(ClassName);
sort(Defs.begin(), Defs.end(), LessRecord());
int i = 0;
OS << "enum {\n";
for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;){
for (RecordListIter RI = Defs.begin(), E = Defs.end(); RI != E;) {
Record *R = *RI++;
std::string Instance = R->getName();
OS << " "
<< Instance
<< " = "
<< " 1 << " << i++
<< ((RI != E) ? ",\n" : "\n");
<< Instance;
if (isBits) {
OS << " = "
<< " 1 << " << i++;
}
OS << ((RI != E) ? ",\n" : "\n");
}
OS << "};\n";
@@ -76,8 +80,7 @@ void SubtargetEmitter::FeatureKeyValues(std::ostream &OS) {
RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature");
sort(Features.begin(), Features.end(), LessRecord());
OS << "\n"
<< "// Sorted (by key) array of values for CPU features.\n"
OS << "// Sorted (by key) array of values for CPU features.\n"
<< "static llvm::SubtargetFeatureKV FeatureKV[] = {\n";
for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;) {
Record *R = *RI++;
@@ -105,8 +108,7 @@ void SubtargetEmitter::CPUKeyValues(std::ostream &OS) {
RecordList Processors = Records.getAllDerivedDefinitions("Processor");
sort(Processors.begin(), Processors.end(), LessRecordFieldName());
OS << "\n"
<< "// Sorted (by key) array of values for CPU subtype.\n"
OS << "// Sorted (by key) array of values for CPU subtype.\n"
<< "static const llvm::SubtargetFeatureKV SubTypeKV[] = {\n";
for (RecordListIter RI = Processors.begin(), E = Processors.end();
RI != E;) {
@@ -145,15 +147,61 @@ void SubtargetEmitter::CPUKeyValues(std::ostream &OS) {
OS<<"};\n";
}
//
// ParseFeaturesFunction - Produces a subtarget specific function for parsing
// the subtarget features string.
//
void SubtargetEmitter::ParseFeaturesFunction(std::ostream &OS) {
RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature");
sort(Features.begin(), Features.end(), LessRecord());
OS << "// ParseSubtargetFeatures - Parses features string setting specified\n"
"// subtarget options.\n"
"void llvm::";
OS << Target;
OS << "Subtarget::ParseSubtargetFeatures(const std::string &FS,\n"
" const std::string &CPU) {\n"
" SubtargetFeatures Features(FS);\n"
" Features.setCPUIfNone(CPU);\n"
" uint32_t Bits = Features.getBits(SubTypeKV, SubTypeKVSize,\n"
" FeatureKV, FeatureKVSize);\n";
for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;) {
Record *R = *RI++;
std::string Instance = R->getName();
std::string Name = R->getValueAsString("Name");
std::string Type = R->getValueAsString("Type");
std::string Attribute = R->getValueAsString("Attribute");
OS << " " << Attribute << " = (Bits & " << Instance << ") != 0;\n";
}
OS << "}\n";
}
//
// SubtargetEmitter::run - Main subtarget enumeration emitter.
//
void SubtargetEmitter::run(std::ostream &OS) {
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!");
Target = Targets[0]->getName();
EmitSourceFileHeader("Subtarget Enumeration Source Fragment", OS);
OS << "#include \"llvm/Target/SubtargetFeature.h\"\n\n";
FeatureEnumeration(OS);
Enumeration(OS, "FuncUnit", true);
OS<<"\n";
Enumeration(OS, "InstrItinClass", false);
OS<<"\n";
Enumeration(OS, "SubtargetFeature", true);
OS<<"\n";
FeatureKeyValues(OS);
OS<<"\n";
CPUKeyValues(OS);
OS<<"\n";
ParseFeaturesFunction(OS);
}