[Offload] Use llvm::Error throughout liboffload internals (#140879)

This removes the `ol_impl_result_t` helper class, replacing it with
`llvm::Error`. In addition, some internal functions that returned
`ol_errc_t` now return `llvm::Error` (with a fancy message).

1 files changed, 1 insertions, 1 deletions

diff --git a/offload/tools/offload-tblgen/MiscGen.cpp b/offload/tools/offload-tblgen/MiscGen.cpp
index b73d70d58c23..bc3d204f78d8 100644
--- a/offload/tools/offload-tblgen/MiscGen.cpp
+++ b/offload/tools/offload-tblgen/MiscGen.cpp
@@ -61,7 +61,7 @@ void EmitOffloadImplFuncDecls(const RecordKeeper &Records, raw_ostream &OS) {
   OS << GenericHeader;
   for (auto *R : Records.getAllDerivedDefinitions("Function")) {
     FunctionRec F{R};
-    OS << formatv("{0}_impl_result_t {1}_impl(", PrefixLower, F.getName());
+    OS << formatv("Error {0}_impl(", F.getName());
     auto Params = F.getParams();
     for (auto &Param : Params) {
       OS << Param.getType() << " " << Param.getName();