[ORC] Errorize the ORC APIs.

This patch updates the ORC layers and utilities to return and propagate
llvm::Errors where appropriate. This is necessary to allow ORC to safely handle
error cases in cross-process and remote JITing.

llvm-svn: 307350

1 files changed, 21 insertions, 0 deletions

diff --git a/llvm/lib/ExecutionEngine/Orc/OrcError.cpp b/llvm/lib/ExecutionEngine/Orc/OrcError.cpp
index 9e70c4a..df2d320 100644
--- a/llvm/lib/ExecutionEngine/Orc/OrcError.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/OrcError.cpp
@@ -45,6 +45,8 @@ public:
       return "Could not negotiate RPC function";
     case OrcErrorCode::RPCResponseAbandoned:
       return "RPC response abandoned";
+    case OrcErrorCode::JITSymbolNotFound:
+      return "JIT symbol not found";
     case OrcErrorCode::UnexpectedRPCCall:
       return "Unexpected RPC call";
     case OrcErrorCode::UnexpectedRPCResponse:
@@ -63,10 +65,29 @@ static ManagedStatic<OrcErrorCategory> OrcErrCat;
 namespace llvm {
 namespace orc {
 
+char JITSymbolNotFound::ID = 0;
+
 std::error_code orcError(OrcErrorCode ErrCode) {
   typedef std::underlying_type<OrcErrorCode>::type UT;
   return std::error_code(static_cast<UT>(ErrCode), *OrcErrCat);
 }
 
+JITSymbolNotFound::JITSymbolNotFound(std::string SymbolName)
+  : SymbolName(std::move(SymbolName)) {}
+
+std::error_code JITSymbolNotFound::convertToErrorCode() const {
+  typedef std::underlying_type<OrcErrorCode>::type UT;
+  return std::error_code(static_cast<UT>(OrcErrorCode::JITSymbolNotFound),
+                         *OrcErrCat);
+}
+
+void JITSymbolNotFound::log(raw_ostream &OS) const {
+  OS << "Could not find symbol '" << SymbolName << "'";
+}
+
+const std::string &JITSymbolNotFound::getSymbolName() const {
+  return SymbolName;
+}
+
 }
 }