[Offload] Use new error code handling mechanism and lower-case messages (#139275)

[Offload] Use new error code handling mechanism

This removes the old ErrorCode-less error method and requires
every user to provide a concrete error code. All calls have been
updated.

In addition, for consistency with error messages elsewhere in LLVM, all
messages have been made to start lower case.

1 files changed, 8 insertions, 6 deletions

diff --git a/offload/plugins-nextgen/common/src/JIT.cpp b/offload/plugins-nextgen/common/src/JIT.cpp
index affedb1a3368..c82a06e36d8f 100644
--- a/offload/plugins-nextgen/common/src/JIT.cpp
+++ b/offload/plugins-nextgen/common/src/JIT.cpp
@@ -62,8 +62,8 @@ createModuleFromMemoryBuffer(std::unique_ptr<MemoryBuffer> &MB,
   SMDiagnostic Err;
   auto Mod = parseIR(*MB, Err, Context);
   if (!Mod)
-    return make_error<StringError>("Failed to create module",
-                                   inconvertibleErrorCode());
+    return error::createOffloadError(error::ErrorCode::UNKNOWN,
+                                     "failed to create module");
   return std::move(Mod);
 }
 Expected<std::unique_ptr<Module>>
@@ -100,7 +100,8 @@ createTargetMachine(Module &M, std::string CPU, unsigned OptLevel) {
   std::string Msg;
   const Target *T = TargetRegistry::lookupTarget(M.getTargetTriple(), Msg);
   if (!T)
-    return make_error<StringError>(Msg, inconvertibleErrorCode());
+    return error::createOffloadError(error::ErrorCode::INVALID_BINARY,
+                                     Msg.data());
 
   SubtargetFeatures Features;
   Features.getDefaultSubtargetFeatures(TT);
@@ -118,8 +119,8 @@ createTargetMachine(Module &M, std::string CPU, unsigned OptLevel) {
       T->createTargetMachine(M.getTargetTriple(), CPU, Features.getString(),
                              Options, RelocModel, CodeModel, CGOptLevel));
   if (!TM)
-    return make_error<StringError>("Failed to create target machine",
-                                   inconvertibleErrorCode());
+    return error::createOffloadError(error::ErrorCode::INVALID_BINARY,
+                                     "failed to create target machine");
   return std::move(TM);
 }
 
@@ -221,7 +222,8 @@ JITEngine::backend(Module &M, const std::string &ComputeUnitKind,
     raw_fd_stream FD(PostOptIRModuleFileName.get(), EC);
     if (EC)
       return createStringError(
-          EC, "Could not open %s to write the post-opt IR module\n",
+          error::ErrorCode::HOST_IO,
+          "Could not open %s to write the post-opt IR module\n",
           PostOptIRModuleFileName.get().c_str());
     M.print(FD, nullptr);
   }