[ORC] Add an Error return to the JITCompileCallbackManager::grow method.

Calling grow may result in an error if, for example, this is a callback
manager for a remote target. We need to be able to return this error to the
callee.

llvm-svn: 312429

1 files changed, 9 insertions, 6 deletions

diff --git a/llvm/lib/ExecutionEngine/Orc/OrcCBindingsStack.h b/llvm/lib/ExecutionEngine/Orc/OrcCBindingsStack.h
index e38decf94f3..ecb4c207b5d 100644
--- a/llvm/lib/ExecutionEngine/Orc/OrcCBindingsStack.h
+++ b/llvm/lib/ExecutionEngine/Orc/OrcCBindingsStack.h
@@ -145,12 +145,15 @@ public:
   createLazyCompileCallback(JITTargetAddress &RetAddr,
                             LLVMOrcLazyCompileCallbackFn Callback,
                             void *CallbackCtx) {
-    auto CCInfo = CCMgr->getCompileCallback();
-    CCInfo.setCompileAction([=]() -> JITTargetAddress {
-      return Callback(wrap(this), CallbackCtx);
-    });
-    RetAddr = CCInfo.getAddress();
-    return LLVMOrcErrSuccess;
+    if (auto CCInfoOrErr = CCMgr->getCompileCallback()) {
+      auto &CCInfo = *CCInfoOrErr;
+      CCInfo.setCompileAction([=]() -> JITTargetAddress {
+          return Callback(wrap(this), CallbackCtx);
+        });
+      RetAddr = CCInfo.getAddress();
+      return LLVMOrcErrSuccess;
+    } else
+      return mapError(CCInfoOrErr.takeError());
   }
 
   LLVMOrcErrorCode createIndirectStub(StringRef StubName,