================
@@ -187,13 +161,174 @@ void ModuleSymbolTable::CollectAsmSymbols(
}
}
+static void
+addSymbols(RecordStreamer &Streamer,
+ function_ref<void(StringRef, BasicSymbolRef::Flags)> AsmSymbol) {
+ Streamer.flushSymverDirectives();
+
+ for (const auto &[Name, State] : Streamer) {
+ // FIXME: For now we just assume that all asm symbols are executable.
+ uint32_t Res = BasicSymbolRef::SF_Executable;
+ switch (State) {
+ case RecordStreamer::NeverSeen:
+ llvm_unreachable("NeverSeen should have been replaced earlier");
+ case RecordStreamer::DefinedGlobal:
+ Res |= BasicSymbolRef::SF_Global;
+ break;
+ case RecordStreamer::Defined:
+ break;
+ case RecordStreamer::Global:
+ case RecordStreamer::Used:
+ Res |= BasicSymbolRef::SF_Undefined;
+ Res |= BasicSymbolRef::SF_Global;
+ break;
+ case RecordStreamer::DefinedWeak:
+ Res |= BasicSymbolRef::SF_Weak;
+ Res |= BasicSymbolRef::SF_Global;
+ break;
+ case RecordStreamer::UndefinedWeak:
+ Res |= BasicSymbolRef::SF_Weak;
+ Res |= BasicSymbolRef::SF_Undefined;
+ }
+ AsmSymbol(Name, BasicSymbolRef::Flags(Res));
+ }
+}
+
+void ModuleSymbolTable::CollectAsmSymbols(
+ const Module &M,
+ function_ref<void(StringRef, BasicSymbolRef::Flags)> AsmSymbol) {
+
+ MDTuple *SymbolsMD =
+ dyn_cast_if_present<MDTuple>(M.getModuleFlag("global-asm-symbols"));
+
+ if (SymbolsMD) {
+ for (const Metadata *MD : SymbolsMD->operands()) {
+ const MDTuple *SymMD = cast<MDTuple>(MD);
+ const MDString *Name = cast<MDString>(SymMD->getOperand(0));
+ const ConstantInt *Flags =
+ mdconst::extract<ConstantInt>(SymMD->getOperand(1));
+ AsmSymbol(Name->getString(),
+ static_cast<BasicSymbolRef::Flags>(Flags->getZExtValue()));
+ }
+ addSpecialSymbols(M, AsmSymbol);
+ return;
+ }
+
+ initializeRecordStreamer(
+ M, /*CPU=*/"", /*Features=*/"",
+ [&](RecordStreamer &Streamer) { addSymbols(Streamer, AsmSymbol); },
+ /*DiagHandler=*/nullptr);
+
+ addSpecialSymbols(M, AsmSymbol);
+}
+
+static void addSymvers(RecordStreamer &Streamer,
+ function_ref<void(StringRef, StringRef)> AsmSymver) {
+ for (const auto &[Name, Aliases] : Streamer.symverAliases())
+ for (StringRef Alias : Aliases)
+ AsmSymver(Name->getName(), Alias);
+}
+
void ModuleSymbolTable::CollectAsmSymvers(
const Module &M, function_ref<void(StringRef, StringRef)> AsmSymver) {
- initializeRecordStreamer(M, [&](RecordStreamer &Streamer) {
- for (auto &KV : Streamer.symverAliases())
- for (auto &Alias : KV.second)
- AsmSymver(KV.first->getName(), Alias);
- });
+
+ MDTuple *SymversMD =
+ dyn_cast_if_present<MDTuple>(M.getModuleFlag("global-asm-symvers"));
+
+ if (SymversMD) {
----------------
asavonic wrote:
Done.
https://github.com/llvm/llvm-project/pull/174995
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