[ORC] Update ORC C bindings to use the new llvm::Error C API.
This replaces instances of the LLVMOrcErrorCode type with LLVMErrorRef,
simplifying the implementation of the OrcCBindingsStack class and ORC
C API bindings and making it possible to return arbitrary (wrapped)
llvm::Errors.
llvm-svn: 342828
diff --git a/llvm/include/llvm-c/Error.h b/llvm/include/llvm-c/Error.h
index 00714ec..6a5ba87 100644
--- a/llvm/include/llvm-c/Error.h
+++ b/llvm/include/llvm-c/Error.h
@@ -18,6 +18,8 @@
extern "C" {
#endif
+#define LLVMErrorSuccess 0
+
/**
* Opaque reference to an error instance. Null serves as the 'success' value.
*/
