/// !
lltok::Kind LLLexer::LexExclaim() {
// Lex a metadata name as a MetadataVar.
- if (isalpha(CurPtr[0])) {
+ if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
+ CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\') {
++CurPtr;
while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
- CurPtr[0] == '.' || CurPtr[0] == '_')
+ CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\')
++CurPtr;
StrVal.assign(TokStart+1, CurPtr); // Skip !
+ UnEscapeLexed(StrVal);
return lltok::MetadataVar;
}
return lltok::exclaim;
}
void AssemblyWriter::printNamedMDNode(const NamedMDNode *NMD) {
- Out << "!" << NMD->getName() << " = !{";
+ Out << '!';
+ StringRef Name = NMD->getName();
+ if (Name.empty()) {
+ Out << "<empty name> ";
+ } else {
+ if (isalpha(Name[0]) || Name[0] == '-' || Name[0] == '$' ||
+ Name[0] == '.' || Name[0] == '_')
+ Out << Name[0];
+ else
+ Out << '\\' << hexdigit(Name[0] >> 4) << hexdigit(Name[0] & 0x0F);
+ for (unsigned i = 1, e = Name.size(); i != e; ++i) {
+ unsigned char C = Name[i];
+ if (isalnum(C) || C == '-' || C == '$' || C == '.' || C == '_')
+ Out << C;
+ else
+ Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
+ }
+ }
+ Out << " = !{";
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
if (i) Out << ", ";
int Slot = Machine.getMetadataSlot(NMD->getOperand(i));