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Use SequenceToOffsetTable to generate instruction name table for AsmWriter.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153857 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-04-02 00:47:39 +00:00
parent caa2c40a57
commit a4bd58b0f0
1 changed files with 27 additions and 25 deletions
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52
utils/TableGen/AsmWriterEmitter.cpp
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@ -374,7 +374,7 @@ void AsmWriterEmitter::EmitPrintInstruction(raw_ostream &O) {
O << " };\n\n";
// Emit the string itself.
O << " const char *AsmStrs = \n";
O << " const char *const AsmStrs = \n";
StringTable.EmitString(O);
O << ";\n\n";
@ -504,17 +504,13 @@ emitRegisterNameString(raw_ostream &O, StringRef AltName,
StringTable.emit(O, printChar);
O << " };\n\n";
O << " static const unsigned RegAsmOffset" << AltName << "[] = {\n ";
O << " static const unsigned RegAsmOffset" << AltName << "[] = {";
for (unsigned i = 0, e = Registers.size(); i != e; ++i) {
O << StringTable.get(AsmNames[i]);
if (((i + 1) % 14) == 0)
O << ",\n ";
else
O << ", ";
if ((i % 14) == 0)
O << "\n ";
O << StringTable.get(AsmNames[i]) << ", ";
}
O << "0\n"
<< " };\n"
O << " };\n"
<< "\n";
}
@ -577,19 +573,30 @@ void AsmWriterEmitter::EmitGetInstructionName(raw_ostream &O) {
const std::vector<const CodeGenInstruction*> &NumberedInstructions =
Target.getInstructionsByEnumValue();
StringToOffsetTable StringTable;
O <<
"\n\n#ifdef GET_INSTRUCTION_NAME\n"
"#undef GET_INSTRUCTION_NAME\n\n"
"/// getInstructionName: This method is automatically generated by tblgen\n"
"/// from the instruction set description. This returns the enum name of the\n"
"/// specified instruction.\n"
"const char *" << Target.getName() << ClassName
<< "::getInstructionName(unsigned Opcode) {\n"
<< " assert(Opcode < " << NumberedInstructions.size()
<< " && \"Invalid instruction number!\");\n"
<< "\n"
<< " static const unsigned InstAsmOffset[] = {";
<< "const char *" << Target.getName() << ClassName
<< "::getInstructionName(unsigned Opcode) {\n"
<< " assert(Opcode < " << NumberedInstructions.size()
<< " && \"Invalid instruction number!\");\n"
<< "\n";
SequenceToOffsetTable<std::string> StringTable;
for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
const CodeGenInstruction &Inst = *NumberedInstructions[i];
StringTable.add(Inst.TheDef->getName());
}
StringTable.layout();
O << " static const char Strs[] = {\n";
StringTable.emit(O, printChar);
O << " };\n\n";
O << " static const unsigned InstAsmOffset[] = {";
for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
const CodeGenInstruction &Inst = *NumberedInstructions[i];
@ -597,15 +604,10 @@ void AsmWriterEmitter::EmitGetInstructionName(raw_ostream &O) {
if ((i % 14) == 0)
O << "\n ";
O << StringTable.GetOrAddStringOffset(AsmName) << ", ";
O << StringTable.get(AsmName) << ", ";
}
O << "0\n"
<< " };\n"
<< "\n";
O << " const char *Strs =\n";
StringTable.EmitString(O);
O << ";\n";
O << " };\n"
<< "\n";
O << " return Strs+InstAsmOffset[Opcode];\n"
<< "}\n\n#endif\n";