[Orc][Modules] Fix Modules build fallout from a34680a33eb.

In a34680a33eb OrcError.h and Orc/RPC/*.h were split out from the rest of
ExecutionEngine in order to eliminate false dependencies for remote JIT
targets (see https://reviews.llvm.org/D68732), however this broke modules
builds (see https://reviews.llvm.org/D69817).

This patch splits these headers out into a separate module, LLVM_OrcSupport,
in order to fix the modules build.

Fixes <rdar://56377508>.

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/ExecutionEngine/OrcError/RPCError.cpp b/llvm/lib/ExecutionEngine/OrcError/RPCError.cpp
index b77a526f571..3cf78fd9f7b 100644
--- a/llvm/lib/ExecutionEngine/OrcError/RPCError.cpp
+++ b/llvm/lib/ExecutionEngine/OrcError/RPCError.cpp
@@ -11,6 +11,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ExecutionEngine/Orc/RPC/RPCUtils.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/raw_ostream.h"
+
+#include <system_error>
+#include <string>
 
 char llvm::orc::rpc::RPCFatalError::ID = 0;
 char llvm::orc::rpc::ConnectionClosed::ID = 0;