[ORC] Add orc::SymbolResolver, a Orc/Legacy API interop header, and an

orc::SymbolResolver to JITSymbolResolver adapter.

The new orc::SymbolResolver interface uses asynchronous queries for better
performance. (Asynchronous queries with bulk lookup minimize RPC/IPC overhead,
support parallel incoming queries, and expose more available work for
distribution). Existing ORC layers will soon be updated to use the
orc::SymbolResolver API rather than the legacy llvm::JITSymbolResolver API.

Because RuntimeDyld still uses JITSymbolResolver, this patch also includes an
adapter that wraps an orc::SymbolResolver with a JITSymbolResolver API.

llvm-svn: 323073

3 files changed, 7 insertions, 7 deletions

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/JITSymbol.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/JITSymbol.cpp
index 670c6d2fa3f..2b3c00fd7d7 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/JITSymbol.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/JITSymbol.cpp
@@ -52,7 +52,7 @@ ARMJITSymbolFlags llvm::ARMJITSymbolFlags::fromObjectSymbol(
 ///        findSymbolInLogicalDylib and if that fails calling
 ///        findSymbol.
 Expected<JITSymbolResolver::LookupResult>
-LegacyJITSymbolResolver::lookup(const SymbolNameSet &Symbols) {
+LegacyJITSymbolResolver::lookup(const LookupSet &Symbols) {
   JITSymbolResolver::LookupResult Result;
   for (auto &Symbol : Symbols) {
     std::string SymName = Symbol.str();
@@ -84,7 +84,7 @@ LegacyJITSymbolResolver::lookup(const SymbolNameSet &Symbols) {
 /// @brief Performs flags lookup by calling findSymbolInLogicalDylib and
 ///        returning the flags value for that symbol.
 Expected<JITSymbolResolver::LookupFlagsResult>
-LegacyJITSymbolResolver::lookupFlags(const SymbolNameSet &Symbols) {
+LegacyJITSymbolResolver::lookupFlags(const LookupSet &Symbols) {
   JITSymbolResolver::LookupFlagsResult Result;
 
   for (auto &Symbol : Symbols) {
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index 9741a48439d..5c4b8c12f34 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -211,7 +211,7 @@ RuntimeDyldImpl::loadObjectImpl(const object::ObjectFile &Obj) {
   // definitions occur elsewhere.
   JITSymbolResolver::LookupFlagsResult SymbolFlags;
   {
-    JITSymbolResolver::SymbolNameSet Symbols;
+    JITSymbolResolver::LookupSet Symbols;
     for (auto &Sym : Obj.symbols()) {
       uint32_t Flags = Sym.getFlags();
       if ((Flags & SymbolRef::SF_Common) || (Flags & SymbolRef::SF_Weak)) {
@@ -1000,10 +1000,10 @@ Error RuntimeDyldImpl::resolveExternalSymbols() {
   // Resolution can trigger emission of more symbols, so iterate until
   // we've resolved *everything*.
   {
-    JITSymbolResolver::SymbolNameSet ResolvedSymbols;
+    JITSymbolResolver::LookupSet ResolvedSymbols;
 
     while (true) {
-      JITSymbolResolver::SymbolNameSet NewSymbols;
+      JITSymbolResolver::LookupSet NewSymbols;
 
       for (auto &RelocKV : ExternalSymbolRelocations) {
         StringRef Name = RelocKV.first();
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
index 0f4534f2c9f..3d944bf7b60 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
@@ -731,7 +731,7 @@ bool RuntimeDyldCheckerImpl::checkAllRulesInBuffer(StringRef RulePrefix,
 bool RuntimeDyldCheckerImpl::isSymbolValid(StringRef Symbol) const {
   if (getRTDyld().getSymbol(Symbol))
     return true;
-  JITSymbolResolver::SymbolNameSet Symbols({Symbol});
+  JITSymbolResolver::LookupSet Symbols({Symbol});
   auto Result = getRTDyld().Resolver.lookup(Symbols);
   if (!Result) {
     logAllUnhandledErrors(Result.takeError(), errs(), "RTDyldChecker: ");
@@ -750,7 +750,7 @@ uint64_t RuntimeDyldCheckerImpl::getSymbolRemoteAddr(StringRef Symbol) const {
   if (auto InternalSymbol = getRTDyld().getSymbol(Symbol))
     return InternalSymbol.getAddress();
 
-  JITSymbolResolver::SymbolNameSet Symbols({Symbol});
+  JITSymbolResolver::LookupSet Symbols({Symbol});
   auto Result = getRTDyld().Resolver.lookup(Symbols);
   if (!Result) {
     logAllUnhandledErrors(Result.takeError(), errs(), "RTDyldChecker: ");